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» Making cinder blocks with your own hands: instructions for making them at home. Various DIY building blocks

Making cinder blocks with your own hands: instructions for making them at home. Various DIY building blocks

This article is intended for those who are interested in maximizing the cost of building materials. From it you will learn about the method of making cinder blocks with your own hands using a vibrating machine. We will talk about how to create a matrix for blocks yourself and about the rules for making blocks for walls.

Cinder block is the simplest and most affordable of stone materials for walls. Its history goes back more than 100 years, and the combination of properties of structural and insulating material makes it indispensable today.

Massive private construction in the periphery, especially in subsidiary and farms, requires constant reduction in construction costs non-residential premises. For the walls of sheds, barns and storerooms, almost everything that comes to hand is used - from slab to marl. In this article we will look at the possibility of creating a vibrating machine for making cinder blocks.

Note. To manufacture the machine, you will need the skills of a welder and mechanic.

Purpose of homemade cinder block

It should be noted right away that the final product will not have high levels of strength and durability compared to factory “prototypes”. Home production does not allow the technology to be maintained, since there is no possibility for the steaming procedure, in which the material is saturated with the necessary moisture and receives optimal temperature for the reaction of the binder (cement). However, the blocks are quite suitable for the construction of lightweight one-story buildings with a service life of about 30 years.

Cinder block machine

The main part of a homemade machine is the matrix or mold for the raw material mixture. Essentially, it is a steel box with elements installed in it in the form of voids, or without them. The matrix itself is already a machine that can be used by performing some of the operations manually.

To make the machine you will need:

  1. Welding machine.
  2. Bulgarian.
  3. Vise.
  4. Locksmith tool.

Materials:

  1. Steel sheet 3 mm - 1 sq. m.
  2. Pipe Ø 75-90 mm - 1 m.
  3. Strip 3 mm - 0.3 m.
  4. Electric motor 500-750 W.
  5. Bolts, nuts.

Operating procedure:

  1. Take dimensions from a standard cinder block (w/w) or determine the dimensions you need for yourself.
  2. Cut out the sides of the matrix from the sheet at the rate of 2 pieces with a partition in the middle. You should end up with a box with two equal compartments.
  3. The voids should be left by a bottom wall with a thickness of at least 30 mm. From this calculation we determine the height of the cylinder (or parallelepiped) to limit the voids.
  4. We cut 6 pieces of pipe with a length equal to the height of the cylinder.
  5. To give the cylinders a cone shape, you need to cut each of them lengthwise to the middle, compress it with a vice and connect it by welding. The diameter will decrease by 2-3 mm.
  6. Weld the cylinders on both sides.
  7. Connect the cylinders together in a row along the long side of the block. They must copy the location (pitch, diameter) of the voids on the factory sample. Add 30 mm plates along the edges with holes for attaching to the eyes.
  8. In the middle of each of the matrix compartments, make cuts and weld the eyes with reverse side boxes This is necessary to allow temporary fastening of void limiters. This way you will have the opportunity, by removing them, to produce monolithic blocks.
  9. On one of the transverse walls (outside), weld 4 bolts for the mounting holes of the vibration motor.
  10. Weld the apron and blades along the edges on the loading side.
  11. Clean and polish all parts for painting.
  12. Make a press in the shape of the body of the block material - a plate with holes, the diameter of which is 3-5 mm larger than the cylinders. The plate should fit freely to a depth of 50-70 mm into the box where the limiters are installed.
  13. Weld comfortable handles to the press.
  14. Paint the entire structure with primer and install the vibration motor.

Video instructions for making a mold for a cinder block, part 1

Video instructions for making a mold for a cinder block, part 2

To convert a conventional electric motor into a vibration motor, you only need to add eccentrics in the form of welded bolts to its shafts. Their axes must coincide. You can screw nuts onto the bolts, selecting the desired vibration amplitude and frequency. You will find more information in our article “Do it yourself vibrating table”.

Such a matrix can become the basis for a stationary or walking machine. To modernize it, you will need developed mechanic skills and more precise execution. There are many machine options and the main factor is the availability of available material (metal).

Vibrating machine for cinder blocks, video

Material for homemade blocks

Theoretically, “home” blocks can be made from anything - clay, sawdust concrete, expanded clay concrete, etc. Optimal composition mixture - 1 part sand, 1 part cement, 3 parts granulated slag.

The decisive point is the moisture content of the mixture, which is easy to determine by eye. The finished mixture should hold the shape of a lump and not crumble. Raw materials of this consistency can be placed in a matrix and pressed into blocks. Instead of voids you can use glass bottles, broken brick or sharp-angled stone.

How a factory machine for cinder blocks works - video with explanations

Working with a homemade machine

Before the first load, lubricate all contact surfaces with oil - the solution will stick to the metal less. The vibrator can be turned on at any stage, but it is most effective to do this before pressing. Take care of reliable electrical insulation of the motor. The apron should cover it from the mixture.

Finished blocks should be kept outdoors in summer weather (from +10 to +30 °C) for 3 days. The field with finished products must be covered with polyethylene to avoid early drying.

The most simple form for blocks. Video of the work process

Perhaps such a machine will not become a source of reliable and practically free material for the construction of a residential building, but it will help to significantly save on maintaining a household or constructing a garage. Used for plastering walls masonry mortar(1 part cement, 3 parts sand), you will extend the life of a homemade cinder block by at least 1.5 times.

Cinder block is one of the most popular building materials. Manufactured using the vibrocompression method from concrete mortar. A wide variety of buildings are erected from cinder blocks - from sheds and garages to residential buildings.

Are you planning to build something out of cinder blocks? Make them yourself! There is nothing complicated in the production technology of these concrete blocks. You need to thoroughly understand the operating procedure, find out the basic requirements and follow the recipe.

The dimensions of the cinder block are standardized - 188 x 190 x 390 mm. Each block has holes. Usually there are 3 of them. For the manufacture of building elements, a mixture of cement of a grade not lower than M400, blast furnace slag and coarse sand is used. Additional fillers and plasticizers are often added.

You can make blocks either manually using molds or using equipment with a vibrocompression function.

On average, one bag of cement is enough to make 36 blocks. The savings are obvious.

The cinder block must have the correct geometry. Even small irregularities will lead to deterioration in the quality of the masonry. To get even blocks, the molds need to be filled not just to the brim, but with a slight mound, because... During vibration, the concrete will shake slightly and settle.

How to prepare the solution?

There is no universal solution composition for making cinder blocks - each master has his own unique recipe. In general, you need to focus on the characteristics of the slag composition.

ComponentsVolume, l, per blockCompressive strength of the dried block, kg/cm2Frost resistance of the finished block, cyclesThermal conductivity coefficient of the finished cinder block
Slag up to 8 mm10 30-40 30 0.35-0,4
Sand up to 3 mm1,8
Cement2,75
Water1,5

There is a standard “factory” recipe, you can use it as a guide. The proportions are as follows:

  • slag – 7 parts;
  • sand – 2 parts;
  • cement - 1.5 parts;
  • water – 1.5-3 parts. More details about determining the required amount of water will be discussed below.

Helpful advice! Previously, standard dimensions of slag concrete blocks were given. However, for private buildings it is more convenient to use products with dimensions of 400x200x200 mm.

In addition to slag, the composition of such blocks can include ash, sawdust, gypsum, broken bricks, coal combustion products, gravel and other similar materials.

Please pay attention Special attention determining the required volume of water. It must be added so much so that the products do not spread after formation.

You can do a simple test. Drop a handful of solution onto the ground or other surface. If it crumbled, but when squeezed back with your hands, it came back together into a single mass - the consistency is optimal.

Making cinder blocks by hand

If the planned construction is not too large-scale, the blocks can be made without a brick press.

Making a mold

We assemble a mold measuring 40x20x20 cm. If you wish, you can adjust the dimensions at your discretion. To make the mold we use metal sheets or wooden boards.

The design is extremely simple: bottom and side walls. We fasten the walls taking into account the selected width and length of the block. The height of the edges of the form must also correspond to the planned height of the building elements.

Helpful advice! You can make molds with cells to make 4-6 blocks at a time - very convenient. You just need to increase the length and width of the outer edges and install partitions between them.

Prepare empty glass bottles. You will use them to create voids in the blocks.

Filling the blocks

Pour the solution evenly into the mold to the brim.

Place the bottles with the neck up in the poured mixture. We level the surface of the fill, removing excess mortar.

We wait about 5 hours and take out the bottles. We leave the cinder blocks in the molds for a day, after which we carefully remove them and lay them out in stacks on a horizontal surface.

We leave the blocks to dry for a month. Only after the specified time can the material be used for construction.

Helpful advice! Cover the blocks with plastic wrap while drying. It will protect the products from cracking during the heat and prevent them from getting wet in case of rain.

Making cinder blocks on a machine

The machine allows you to significantly increase work productivity. The equipment has a fairly simple design.

Assembling the machine

The main element of a homemade vibratory compacting machine is a mold (matrix) for slag concrete mortar. By its design, this form is metal box With internal elements in the form of voids. The void stoppers can also be removable.

Set for work includes the following materials and tools:


First step. We make a mold according to the size of the future blocks. Cut from sheet steel side faces matrices. We will make a form for 2 blocks at once. To do this, we cut out the inner central partition from steel and fix it in the box.

Second step. We determine the height of the elements to decorate the voids.

Important! In accordance with the technology, the height of the voids should be such that the bottom wall has a thickness of 3 cm.

Third step. We cut 6 pieces of pipe along the length of the limiting cylinders to form voids.

Fourth step. We give the pipes a conical shape. To do this, we cut each piece of pipe longitudinally to the middle, compress it with a vice and connect it using welding machine. each cone on both edges.

Fifth step. We connect the stops in a row along the long edge of the cinder block. Along the edges of the row we add a 3-centimeter thick plate with holes for fastening with eyes.

Sixth step. We make a cut in the middle of each such compartment. We weld lugs on the back side of the form. They will allow temporary fastening of elements to create voids. Very convenient solution– it will be possible to remove the cylinders and make monolithic blocks.

Compact cinder block machine (press on top)

Seventh step. On the outside of one of the transverse walls we weld 4 bolts for the mounting holes of the vibration motor.

Eighth step. Using welding, we attach an apron on the loading side and blades along the edges.

Ninth step. We prepare all structural elements for painting - we clean them and thoroughly polish them.

Tenth step. We do the press. It will look like a plate with holes repeating the location of the holes in the block.

Important! The diameter of the holes on the plate should exceed the same parameter for the recesses in the block by approximately 0.5 cm.

We make the plate of this size and fix it in such a way that it can go deep into the box at the place where the limiters are installed by 5-7 cm.

Finally, all that remains is to weld the handles to the press, coat the structure with a primer mixture and mount the vibration motor.

An ordinary vibration motor can be converted into a suitable vibration motor. Electrical engine. To do this, it is necessary to weld eccentrics onto the engine shafts. We won’t bother too much - we’ll just weld the bolts so that their axes coincide. To regulate the frequency and strength of vibration, screw nuts onto the welded bolts.

Making blocks

Recommendations for preparing the solution are given above. You can use standard recipe or modify it at your discretion. The main thing is to obtain optimal viscosity. It can be determined “by eye” - the lump of mixture should hold its shape steadily.

Before loading the mixture, lubricate the contact metal surfaces with oil. Thanks to this, the solution will not stick to the iron.

We place the finished mixture into the matrix and begin pressing.

Place the filled forms on a vibrating plate and let it compact the solution for 5-15 seconds. After the specified time, add more solution to the mold, because previously loaded will inevitably settle.

We repeat the process, only this time we do not turn off the vibrating plate until the clamp reaches the limiters. We remove the mold until the machine stops.

We give the blocks 1-3 days for initial drying, carefully remove them from the blocks, lay them out on a flat horizontal surface and cover them with plastic wrap. The material can be used for its intended purpose no earlier than after a month.

Good luck!

Video - Making cinder blocks with your own hands

There is no shortage of materials for construction - today you can buy everything. The prices, however, are such that any construction costs a pretty penny, so self-production building materials are not a whim, but a necessity. IN last years brick has serious competitors: blocks made of gas silicate and foam concrete, porous ceramics, expanded clay, polystyrene. All these materials are made on production equipment, but one type of wall stone can be made at home - cinder block. We will tell you how to make a machine for making cinder blocks with your own hands.

Cinder block is fake diamond rectangular shape and strictly defined sizes. The type and size of the cinder block depend on the purpose. Most often, this is a block with technological voids (about 30% of the volume), providing relatively low weight and reducing the thermal conductivity of the material.

Depending on the purpose, cinder block can be:

  • hollow or monolithic;
  • whole or half;
  • private or facial;
  • load-bearing or partition.

Decorative (facial) cinder block can be different colors, surface with front side It can be chipped, torn, corrugated, polished. The material is usually used for the construction of decorative fences.



Several basic block sizes and weights:

  • ordinary standard 390x190x188 mm, weight 20 – 28 kg;
  • ordinary half 390x120x188 or 390x90x188 mm; weight 10 -14 kg;
  • partition 390Х120Х188 mm, weight 10 -15 kg.

Materials for the production of cinder block

The cinder block contains binder, filler and water. The block's name comes from blast furnace slag, which was once abundant and used as filler. Today, slag is rare, and the following is used as a filler for cinder blocks:

  • granite screening;
  • brick chips;
  • fine crushed stone;
  • river gravel;
  • sand;
  • crushed expanded clay;
  • clay;
  • wood sawdust.

The binder is cement grades 300 - 600. The grade of cement depends on the required strength of the block - the higher the grade, the denser the stone.


Characteristics of cinder block. Advantages of industrial production

There is no strictly defined recipe for making cinder block, so its characteristics are not constant. Depending on the filler, the cinder block has:

  • Density (750-1,450 kg/cm3).
  • Strength M30 – M150.
  • The void ratio is on average 0.3, not more than 0.4.
  • Thermal conductivity coefficient 0.27 – 0.65 W/m2
  • Service life (depends on climatic conditions) 30 – 150 years.

Main difference industrial production cinder block - processing of molded stone in a steaming chamber. Within a day, at a temperature of 80–100 o C and humidity up to 100%, the material gains up to 70% of its maximum strength and can be immediately used in construction. The strength characteristics of a factory-made cinder block are approximately twice as high as those of a home-made cinder block. But the material made on a cinder block machine with your own hands is much cheaper and is also quite suitable for construction.


How to make cinder block at home

The principle of cinder block production is simple - it is pouring concrete mixture into the formwork:

  • To prepare the working mixture, mix cement, fillers and water. Fillers are pre-screened to remove large and foreign fragments. The volume of water should not be too large so that the mixture has a semi-dry consistency (in professional slang - “prance”). An example of a typical proportion for a high-strength cinder block: filler - 7 parts, coarse sand - 2 parts, medium-fraction gravel or granite screenings - 2 parts, one and a half parts cement, and 3 water.
  • The mold (matrix) is loaded with the working mixture and compacted as much as possible by vibrocompression or stuffing. After compaction, the mixture is added to the required volume and re-compacted.
  • The formed block is carefully released from the mold.
  • Dry cinder block in natural conditions. After 24 hours, the blocks can be carefully moved from the molding site to the storage site; after 5–7 days, the blocks will be ready for use in construction. The use of a plasticizer allows for faster hardening - after 6–8 hours the cinder block can be moved to a warehouse. The blocks acquire maximum strength after a month; the preferred conditions are high temperature and humidity.

Equipment for the production of cinder block

The main advantage of cinder block production is a wide selection of technical equipment. You can choose and independently make the desired machine for home production cinder block.

For the simplest cinder block production you need:

  • materials;
  • cinder block matrix for molding;
  • ventilated indoor space with a flat floor.

The level of mechanization depends on the desire of the manufacturer and the required number of blocks. I offer three production options:

1. A small volume of blocks for your own needs can be made manually using a simple matrix, which can be easily made from a wooden board.


This is what it looks like further process making cinder block

2. The process can be facilitated by using the simplest machine for cinder blocks at home - a matrix for one block with vibration. Turning on the vibrator for a few seconds after filling the matrix and after adding the mixture to the full volume will speed up the process and reduce labor costs.


Instructions for making the machine and its drawing can be found on the Internet. Machine operation

3. A machine for making cinder blocks with two matrices allows you to significantly simplify production and produce material not only for yourself, but also for sale.

The cinder block machine is simple and can be made at home. To make your own machine you will need:

  • welding machine;
  • angle grinder, also known as “grinder”;
  • ruler and chalk for marking.

The main parts of the machine for making cinder blocks with your own hands:

  • Matrix

Molding boxes with guides and apron.

  • Press

Two pipe handles, two walls sheet metal t. 3 mm and four clamping planes.

Two bases, two guides, crossbars and four wheels without brakes.

  • Lever arm

Three pipes, lugs and two rods.


To visualize how to make a machine and see the drawings, I recommend watching two videos:

  • The video in 3D format tells in detail about the design of the machine and the principle of operation.
  • the video gives the full specification of the machine for making cinder blocks, general drawing and drawings of each individual element.

You can see the operation of a cinder block production machine here (VIDEO 5)

What can you build from cinder block?

The production of cinder blocks did not begin yesterday - in regions where there is an abundance of coal slag, this building material has been used for a long time. While the advantages of cinder blocks are well known (low cost and ease of manufacture), the disadvantages are often kept silent. The disadvantages of this material include:

  • Environmental unsafety

If industrial slag is used in the production of a cinder block, it is likely that the material will have increased levels of radiation. Be sure to use a dosimeter when choosing a material.

  • Instability to high humidity.

A cinder block wall must be insulated from natural moisture. Plastering a cinder block is not easy due to poor adhesion of the solution to the slag.

  • Limited strength.

Another reason to do cladding.

The use of cinder block is limited - it is suitable for construction:

  • outbuildings (sheds, garages, utility rooms);
  • one-story industrial buildings;
  • baths (with careful waterproofing);
  • fences and fences;
  • summer cottages;
  • extensions, etc.

Machine for making cinder blocks updated: November 10, 2016 by: Artyom

Building blocks are a common material for constructing structures for various purposes. They differ in size, components, manufacturing method, but all are popular wall structural material. Building blocks are manufactured in industrial conditions, in household They also make concrete products and cinder blocks, which requires a DIY building block maker. Based on the material of manufacture, these products are divided into the following types:

  • slag concrete;
  • concrete;
  • aerated concrete;
  • fiber foam concrete;
  • polystyrene concrete.

Cinder blocks as a building material

Cinder block is standard concrete products, only instead of heavy gravel and crushed stone, filler in the form of waste slag is used. This replacement gives the material lightness compared to concrete and additional thermal insulation properties, since slag compares favorably with heavy and dense crushed stone in terms of thermal conductivity.

The production of cinder blocks requires precise dosage of components in the solution, namely:

  • cement grade not lower than 400 or 500, take one part (bucket);
  • quarry sand, mix 3 parts (buckets);
  • slag, burnt out brick, expanded clay, this material is added in the amount of 5 parts (buckets);
  • water.

To obtain cinder blocks of the same quality as in the factory, use a solution of medium viscous consistency. A liquid solution will reduce the strength of the blocks, and a thick solution will create uncontrollable voids inside when it hardens.

Concrete blocks

Building blocks made of cement, sand and crushed stone are used for the construction of wall and other structures if increased strength is required. The ratio of components for standard concrete is taken in the ratio 1:3:6; other options for the concrete mixture are described in the builder's handbooks and depend on the brand of cement used, the size of the aggregate and the type of sand.

Construction sawdust blocks

For the construction of residential buildings, dachas, and cottages, light and warm wall material made from sawdust, sand and water is used. The binding component in the solution is lime. The amount of material added to the solution changes the properties of the final product. An increase in the mass of sawdust leads to an increase in thermal insulation properties, but contributes to a decrease in strength. With an increase in the amount of sand in the solution, the strength increases, while the frost resistance limit increases, which increases the performance properties of the material. Blocks are widely used in private housing construction as cladding for insulating structures.

The main advantages of the blocks are the availability of materials and low price, long service life without destruction, environmental friendliness of the material, and ease of production. The installation for the production of building blocks with your own hands is available in manufacture and is popular among home craftsmen. Sawdust concrete has an increased drying time, so several through holes are made inside the product to improve air flow.

The dimensions of sawdust blocks are not strictly regulated; their width is taken as a multiple of the wall thickness. If we talk about standard sizes, then the blocks are made according to twice the thickness of the brick (140 mm - 65x2 + 10 cm). When making sawdust stones, the dry ingredients are first mixed, then water is added, and mortar mixers are used for the work.

Aerated concrete building blocks

Their preparation involves a complex process of saturating the solution with gases, which is difficult to reproduce at home. Aerated concrete building blocks are distinguished by their lightness, high noise-insulating and heat-insulating properties.

Fiber foam concrete products for masonry

Fiber foam concrete is inherently an environmentally friendly wall material containing sand, foam and cement. High-tech machines for building blocks spray foam into the mass of the solution, it forms uniform closed particles of space. To increase the strength of the blocks, manufacturers use polyamide fiber reinforcement throughout the entire mass. This wall material is very durable, does not rot, is lightweight and durable.

Their fiber foam concrete blocks are produced various sizes. For load-bearing walls use 20x30x60 cm, which weighs 22 kg. To build a brick wall of the same size, you will need 18 stones, they will weigh 72 kg. Blocks of smaller thickness (10 cm) are used in the construction of walls inside a building, partitions, and they are used to insulate floors and walls. The thermal conductivity of fiber foam concrete is 2.7 times less than that of brick and 2 times less than that of slag concrete and shell rock.

Large block sizes reduce the use of cement-sand mortar for masonry by 20 times compared to building a wall from small-sized stones. Fiber foam concrete does not burn when exposed to high temperatures does not change shape and does not emit harmful impurities when heated.

Polystyrene concrete blocks

The material is classified as another type of light wall concrete blocks. It differs from standard concrete in better performance and reduced production costs. The innovative wall material surpasses all known lightweight concrete in weight, even foam concrete is one and a half times heavier. Thanks to this indicator, houses are built without the usual massive foundation, and the cost of transporting material is reduced.

The production of polystyrene foam blocks involves carefully combining cement, sand, polystyrene foam particles and special additives to retain air in the total mass. Other physical characteristics material puts it a step above conventional materials. Low water absorption and vapor permeability make expanded polystyrene concrete resistant to repeated freezing and thawing, which affects the durability of constructed structures. After the construction of walls from standard materials, slight shrinkage occurs during the year. In the case of polystyrene foam blocks, they do not wait this long.

Installation for the production of building blocks with your own hands

For the manufacture of building structures A special device is used that operates on the principle of a vibration processor.

Such a vibrating machine or vibrating table is designed independently. A self-made installation for the production of building blocks significantly reduces the cost of the blocks and, accordingly, the walls of the house.

Preparation of the solution

The solution is prepared from sand, cement, water and filler, which is used as various materials, as written above. To check the consistency of the solution for fluidity a small amount of thrown to the ground. A high-quality mixture does not spread in watery streams; when clenched in a fist, it sticks together into a lump.

The production of cinder blocks involves thorough cleaning of the slag from foreign debris; chips and unburned parts of coal are not allowed to get into the solution. Sometimes gypsum is added to the solution. In this case, three parts of slag and one part of gypsum are mixed, and water is introduced at the same time. This solution is quick to use as the plaster hardens in minutes. The slag is pre-soaked with water before mixing. To improve the quality of output products, modern plasticizer additives are added to the solution. Their action increases frost resistance, water resistance and mechanical strength blocks.

Depending on the purpose, two types of concrete blocks are made - solid and hollow. The former are used for the construction of durable structures, load-bearing walls, and foundations. The second type of blocks is used as partition material; it insulates well from cold and extraneous sounds.

Making concrete blocks without a vibrating table

Of the two technologies, use wooden form, which is intended for the natural spreading of the solution without vibration, is in constant demand. Placing the solution into the prepared form is carried out in several stages. First, fill the container by a third with the solution, then carefully tap the mold walls around the perimeter with a hammer to ensure high-quality shrinkage of the concrete solution. In the next two stages, the solution is added according to the original technology until the mold is filled. The production of building blocks with voids involves inserting two plastic bottles with water, which remove it after setting.

The forms are left to dry for 2-5 days. Then the blocks are carefully removed from the collapsible structure and laid out on pallets until completely dry. With this method of production there is no need to purchase.

The following tools and equipment will be needed: a sieve for sifting sand, molds for mortar, a trough for mixing or a concrete mixer, a hammer for tapping, a bucket, a shovel, a trowel, and drying trays.

Method for making blocks using a vibration machine

To do this, purchase or make your own vibrating machine for cinder blocks. Special form made of metal is installed on the plane of the machine, and concrete mixture with slag filler, one third of it is poured into it. After this, a vibrating table is connected to the action for up to 20 seconds, which allows you to remove all unnecessary air bubbles from the solution, and the cement will receive good shrinkage. The solution is poured into the mold three times. The blocks are removed from the mold in the same way as with the vibration-free manufacturing method.

Cinder block does not tolerate drying out hot weather in the open rays of the sun, so on hot days it is sprinkled with water and covered with oilcloth or cellophane so that moisture does not evaporate so actively. Formed, completely dried concrete blocks gain 100% strength on the 28th day, and after that they are ready for use in construction.

Features of making cinder blocks

The molds are made independently, using metal or wood; the width of the boards is at least 190-200 mm. They are connected into a prefabricated structure, the side parts of which are detached to remove the finished block. The overall design combines no more than 6 cells for laying concrete. Ready design installed on a dense, waterproof material, such as oilcloth, forming the bottom of the mold.

If wood is chosen as the material for the mold, it is pre-treated with impregnations or primers to increase moisture resistance. The molds are made from dry wood. These conditions are met, otherwise during the work the tree will move away from the water and change geometric size block. Standard sizes stones are considered 400x200x200 mm, but each private manufacturer makes blocks for his own construction.

For metal matrices, sheets with a thickness of no more than 3-4 mm are taken. When welding a structure, all welds are made from the outside so as not to round the corners of the block. The voids inside the cinder block are made using segments metal pipes suitable diameter, for example 80 mm. The distance between the pipes and the distance from the walls are controlled, the composition is welded in strips for rigidity and fixation.

If equipment is being made for the production of building blocks, then when attaching the vibrator to the table, after tightening the nuts, they are still lightly welded. The motor must close protective casing from any material from splashes of solution, water, dust.

Technology for the production of sawdust concrete blocks

The available materials are not pre-processed, and you can buy them at any hardware store, therefore, the production of blocks from sand, lime and sawdust begins immediately after purchase. To mix the solution, use a concrete mixer or mortar mixer, since mixing by hand wood waste difficult.

Dry sawdust, passed through a coarse sieve, is mixed with sand and cement. Lime or prepared clay dough is added to the solution. The resulting mixture is mixed well and only after that water is added, gradually pouring it in in small portions. To determine the readiness of the solution, squeeze it in your hand, after which fingerprints should remain on the lump, which indicates the correct proportions.

Before filling the molds with the solution, they are lined with a thin layer of sawdust. Internal holes in the blocks are made using wooden plugs about 70-80 mm in size, which are installed in the matrix before pouring the solution. The material of the building blocks is placed tightly into the mold using a special tamper. The container is filled to the top and left to dry for three days. After this period, the solution gains about 40% of its required strength.

The molds are disassembled, and the blocks are dried for another four days, after which the strength becomes 70% of the required limit. Finished goods transferred to pallets and protected from direct sun rays. Drying of blocks is faster if you leave gaps between the products during storage. It is advisable to place the trays in a draft or use a fan for forced ventilation.

Sawdust concrete blocks gain 100% strength after drying for 3 months, but they can be used after a month of ventilation. At this time their strength is 90%.

Machines and equipment

To make the number of blocks required for construction, a ready-made vibroforming machine is purchased. The TL-105 brand has good performance. And although its power is only 0.55 kW, it produces about 150 concrete blocks with different aggregates per hour of operation. Its approximate cost on the market is approximately 42,800 rubles. Modern manufacturers machine equipment produce many varieties of machines for the production of blocks with additional functions. Prices for machines are different, and the cost of building blocks directly depends on this.

For small private construction, a 1IKS vibration machine is suitable; it costs about 17,000 rubles, the power is only 0.15 kW, such equipment produces 30 blocks per hour. When buying a machine, take into account the level of production of blocks for construction needs.

In conclusion, it should be noted that making building blocks with your own hands will greatly save money on the production of products. Cost does not take into account wages, which is paid to the employee. The cost of the block does not include overhead and production costs, taxes and other deductions, therefore, making the building material cheaper than the house.

The building materials market presents different kinds concrete blocks, including slag concrete. They are distinguished by their low weight and increased dimensions, which makes it possible to build a building at an accelerated pace. Wanting to reduce the estimated cost of work, many developers do not purchase block building materials, but make them themselves using a machine for producing blocks. Industrial models of vibrating machines are not always distinguished by their quality and performance. It is easy to make a homemade unit, guided by the recommendations given.

Cinder blocks

Types of concrete blocks for construction

Despite the fact that in construction industry Brick is often used for the construction of buildings; it is difficult for it to compete with block building materials made from concrete. To build a house, it’s easy to choose blocks that differ:

  • increased dimensions;
  • reduced weight;
  • filler used;
  • production technology.

The manufacturing technology of block products involves the use of the following filler:

  • expanded clay;
  • sawdust;
  • slags;
  • brick fighting;
  • dropouts.

Expanded clay blocks

Wall materials block type are divided into the following types:

  • expanded clay concrete blocks;
  • wood concrete products;
  • foam concrete building materials;
  • aerated concrete products;
  • cinder blocks.

The use of cinder blocks, the cost of which is lower than other block building materials, reduces the cost of building construction. Making cinder blocks on your own is easy to do at home, using a machine for producing blocks. Let's consider the characteristics of cinder block building materials.

Cinder concrete blocks - properties of building materials

Cinder concrete blocks are a building material produced using vibration pressing technology. Along with cement and sand, the following types of filler are used for production:

  • slags, which are waste from metallurgical enterprises;
  • granite and crushed stone screenings;
  • brick waste;
  • river crushed stone;
  • expanded clay particles.

Brick waste is one of the components for cinder blocks

The production of cinder block products can be carried out in various ways:

By producing cinder blocks on a block making machine, you can obtain products that have the following advantages:

  • elevated thermal insulation characteristics. Slag concrete has low thermal conductivity and retains heat well;
  • increased dimensions. They allow you to quickly build a cinder concrete building, outbuilding or garage with your own hands;
  • resistance to microorganisms and damage by rodents. This is ensured by the filler used and the structure of the cinder block mass;
  • reduced cost. Homemade cinder block cheaper than, for example, foam blocks used for construction purchased in a retail chain.

In addition, slag concrete material is fireproof, easy to process and dampens external noise.

Along with its advantages, slag concrete has a number of disadvantages:

  • limited service life. The durability of a slag concrete structure does not exceed two and a half decades;
  • reduced strength properties. Only one-story and two-story buildings are erected from cinder concrete;
  • cracks when sheared. During the shrinkage of the box, cracks do not occur along the seams, but directly along the blocks.

Cinder concrete has low thermal conductivity and retains heat well

Slag concrete also has an unpresentable appearance and needs exterior decoration. In addition, cinder concrete cannot be used for foundation construction.

Despite weak sides material, it is preferred in situations where it is required for minimum costs quickly build a small building or outbuilding.

Which is the best block machine to use?

Developers who decide to independently produce cinder blocks for the construction of walls are faced with the question of choosing equipment. It is not always possible to rent a machine for the production of building blocks, especially in small populated areas. Many people decide to make the equipment themselves. Depending on your financial capabilities, you can choose the following options:

  • simplest design that allows you to make it at home wall blocks at minimal cost;
  • a modernized version of the unit, equipped with a compaction device and additional mechanisms.

It is difficult to give a definite answer as to which block production machine is preferable to use. It all depends on the number of blocks that need to be produced and financing opportunities. Let us dwell on the features of each unit.

Simplified block machine

To make cinder blocks on your own in a reduced quantity, it is not necessary to make a mechanized unit, use a vibrator, or additional mechanisms. The manufacturing process using simplified technology can be carried out in special forms.


Simplified block machine

Procedure:

  • Assemble the molds and coat them inner surface used oil.
  • Pour cinder block mixture into collapsible molds.
  • Leave for 3-4 hours until the solution hardens.
  • Disassemble the containers and carefully remove the blocks.
  • Allow to dry indoors.

If it is necessary to produce hollow products, it is advisable to use ordinary drink bottles to form cavities. A simplified machine for producing blocks, which is a container required size made of wood or steel, can be manufactured at a minimal cost.

Modernized machine for the production of building blocks

With an increased need for cinder blocks for construction big building you can make a more complex machine for producing blocks, equipped with special devices:

  • vibration mechanism. An electric motor is used as a vibration motor, with an eccentric located on the drive shaft. The drive power depends on the size of the mold, the mass of the slag concrete solution and is 0.5–1.5 kW. Under the influence of vibration, the slag concrete mass is compacted, the material is evenly distributed throughout the entire space of the mold, and air inclusions are removed. As a result of compaction, the specific gravity and strength of cinder block products;
  • lifting device. It is designed for faster extraction finished products from molding containers. There are many constructive solutions, allowing to speed up and facilitate the removal of blocks. In the most simple version It is enough to weld handles of any shape to the molding container, by pulling which you can remove the hardened block. Using ready-made drawings, you can independently assemble a lever mechanism from scrap materials.

Modernized machine for the production of building blocks

The shape used in this unit must correspond to the size of the cinder block that is planned to be made. In most cases, products are manufactured of standard dimensions - 0.4x0.2x0.2 m. The molding container must have a height increased by 4m5 cm so that the molded block after compaction has the required dimensions. To simulate cavities, pipe scraps of the required diameter can be welded to the bottom of the container.

We make a machine for blocks with our own hands - sequence of actions

To perform work on assembling the vibration compactor, it is necessary to prepare. The following materials and tools will be required:

  • steel sheets 2.5–3 mm thick;
  • metal pipe with an outer diameter of 7.5 m 8.5 cm;
  • electric motor with a power of up to one kilowatt;
  • apparatus for electric welding with electrodes;
  • grinder complete with cutting wheel for metal;
  • locksmith tool.

Before production begins, you should prepare drawings and understand the design of the machine for producing blocks. It is necessary to decide on the dimensions of the blocks that will be made - the size of the mold depends on this. It can be welded to fit standard products or made in larger sizes.


Drawing of a cinder block machine

When everything is prepared, we make a machine for the production of block products, observing the sequence of operations:

  • Cut rectangular blanks from a steel sheet for welding a molding container of the required size.
  • Tack them with electric welding and assemble the side edging of the molding box for pouring the cinder block mixture.
  • Check the correct tack when equal to length diagonals, finally weld the mold elements.
  • Cut tubular blanks the length of which is equal to the height of the mold and make diametrically spaced cuts on the side surface.
  • Provide a conical shape for the tubular elements and weld them to bottom sheet future molding box.
  • Weld crossbar to the cones, install plugs on the ends with a smaller size.
  • Produce final assembly molding box, welding the bottom with inserts to the edging.
  • Attach two handles on opposite sides to lift and transport the molding container.
  • Install the threaded elements for fastening the vibration motor and screw the vibration motor with the balancing weight.
  • Cut out the top cover that matches the dimensions of the inner cavity of the box and has holes for pipes.
  • Apply anti-corrosion coating, assemble the unit and check its operation.

The use of a group container of increased size allows to increase the productivity of the vibropressing machine.


Drawing. Vibroforming machine

Self-production of slag concrete blocks - recipe


Do-it-yourself cinder block making machine

To make cinder blocks using self-made equipment, you need to prepare the following materials:

  • Portland cement marked M400 and higher;
  • screenings or small crushed stone;
  • slag or ash from coal combustion;
  • sifted sand;
  • water.

Special plasticizers are also used to increase the strength of the cinder block mass and accelerate hardening. To prepare an increased volume of slag concrete mixture, a concrete mixer will be required.

The following slag concrete compositions are used:

  • mix Portland cement with slag in a ratio of 1.5:8. Gradually dilute the mixture with water, the amount of which should not exceed half the volume of cement;
  • mix crushed stone screenings, cement and coal ash in a ratio of 4:1:4. Add water to the concrete mixer until the solution becomes plastic.

Possible formulations include the use of granulated slag, plasticizers, quartz sand and broken bricks.


Portland cement marked M400

We manufacture products ourselves using a block production machine

Using a self-made machine for blocks, carry out work according to the following algorithm:

  • Place the equipment on level ground.
  • Connect electrical power.
  • Prepare cinder block mortar.
  • Pour the prepared mixture into the mold.
  • Turn on the vibration motor for 2-3 minutes.
  • Add cinder mixture to the top level.
  • Place the protective cover and turn on the vibrator.

Compact the array. The cover should come into contact with the stops located in accordance with the height of the block. Then remove the box and let the molded block sit until the mass sets. After careful removal, dry the cinder concrete products in a closed and ventilated area.

Let's sum it up

When planning the construction of a building made of cinder concrete, you can reduce costs by independently making a machine for producing blocks. It is important to use verified documentation for the manufacture of the unit and carefully understand the design of the vibration compaction device. To obtain high-quality products, study the recipe and also understand the technology.