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We open a workshop for the production of cinder blocks

The production of cinder blocks is a profitable business that can generate significant profits. Equipment for the production of cinder block is quite affordable, technology and raw materials are available in each region, which provides a low threshold for entry into this business.

The main advantage of the cinder block, compared with other types of wall blocks used in construction, is its low price, which, against the background of declining incomes of the population, provides it with a significant competitive advantage.
Composition, types and brands of cinder block
Slag stone is a building stone, which is obtained by the method of vibropressing or natural shrinkage in special forms. The main raw material for the production of slag stones is slag, crushed granite, expanded clay and other fillers, for the connection of which cement is used between them. Slag stone is a versatile material whose properties are largely determined by its main filler.

With the use of sand, pebbles or rubble, the most durable cinder blocks are made, but they also have maximum thermal conductivity.

The main types of cinder blocks include:
solid blocks with solid filler for laying socles and foundations;
corpulent blocks under a laying of walls which have the smaller weight and durability;
cinder blocks for masonry partitions that are lighter than brick;
colored decorative cinder blocks that are used for cladding walls, fences.

The main characteristic of the cinder block is its strength grade, which ranges from 35 to 125 kg / cm2. Slag stone is considered to be a low thermally conductive material. Its thermal conductivity depends on the filler and varies between 0.3 – 0.65 W / m * k. For comparison, ceramic brick has a thermal conductivity of 0.8 W / m * k, and silicate brick – about 0.9 W / m * k.

The standard service life of the cinder block is approaching 100 years. It is very convenient for construction, that the cinder block practically does not shrink, however, it has a high level of water absorption, in connection with which buildings from cinder block must be finished with some insulating material.

Slag blocks are standardized according to GOST 6133-99 “Concrete wall concrete. Technical conditions. The environmental friendliness of the cinder block is determined by its filler.

We open a workshop for the production of cinder blocks
Slag stone application
The main area of ​​use of cinder block is the construction of buildings and structures. First of all, it is used for the construction of low-rise buildings, the construction of outbuildings, ventilation ducts and landscape design.

The main competitor as a building material for the cinder block is a brick. And he and the other material has its pros and cons, in terms of using it for the construction of buildings. The main advantage of using cinder block is its lower cost per square meter of the erected structure, as well as the smaller amount of cement mixture required for masonry.

Technology and equipment for the production of slag stone
The technology of production of cinder block is quite simple. At the first stage mixtures are made from cement, selected filler and water. Plasticizers are added to the prepared mixture, which increase the strength and waterproof properties of the product.

Also, special chemical additives are used to save cement, speed up hardening processes, increase frost resistance (that is, increase the number of freeze / thaw cycles without damaging the unit), and ensure curing at low temperatures. These chemical additives can be divided into: plasticizing, air-entraining, hardening accelerators, anti-corrosion and others.

For the preparation of cinder block with your own hands, without the use of equipment, you can use a variety of recipes. We will not dwell on them in detail, since the production of cinder block by the manual method, without the use of equipment, is rather not a business, but a way to save money on its own construction. The most simple and universal recipe is the following: 2 parts of sand, 2 parts of rubble, 7 parts of slag, 2 parts of Portland cement M400. Water is added in a ratio of about 0.5 parts plus the necessary plasticizers. However, each specialist in the production of cinder blocks has its own recipe for production.

Next, the prepared mixture is discharged into the form of vibropress. Hardening of products occurs in natural conditions for up to three days. Faster hardening contribute special additives.

The complete set of the basic technological line for the production of slag stone consists of a vibropress, a concrete mixer, a platform for a concrete mixer and a control panel. Additionally, the line can be equipped with various dispensers, which simplify the process of loading the mixture. This line can be equipped with various dies, which allow to make cinder blocks with different configurations of voids.

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