PRVI BETON
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Explore the entire production process of our innovative building materials
Together with our experience, we brought innovative materials and construction methods to Serbia, and our own production of building concrete blocks, mortars and putty materials allows us to be competitive and set new standards in the construction of low-rise residential buildings.
Perlite concrete blocks In this article we will talk about what these blocks are made of and how they differ from other types of blocks. We will also look at the main types and characteristics of this material. And in the final section of the article you will find an overview of its scope. |
There are many different types of concrete on the market. But the technology of their production comes down to three main components.
Thus, the composition of perlite concrete blocks includes:
- Binder - cement
- Filler – expanded perlite
- Pore-forming additives
Many people have probably heard about this material. After all, it has a wide range of applications: from construction and agricultural work to the production of cosmetics.
As you can see, this firing allows you to obtain a very porous and light mineral. In terms of thermal insulation properties, it can be compared with modern insulation materials such as mineral wool and EPS.
When molten magma or lava solidifies and crystallizes, it forms strong and dense rocks: granite, diorite, gabbro, basalt, and so on. But what happens if this cooling process is sharply accelerated? Then the melt will not have time to crystallize and will turn into volcanic glass.
A well-known example of volcanic glass is obsidian. Sometimes it forms in places where it is constantly washed by groundwater. Then the rock seems to be saturated with moisture - scientifically this process is called hydration. A new material is obtained - perlite.
“Raw” perlite arrives at the plant, where it is loaded into a special furnace and very quickly heated to a temperature of 900-1150°C. In this case, the rock melts and becomes plastic, and the water suddenly turns into steam and increases in volume. As a result, the perlite grains literally swell. Hence the name - expanded perlite.
The choice of a specific fraction depends on what type of concrete needs to be obtained and its properties. For example, to prepare plaster or masonry mortar, use medium or fine perlite sand. To arrange the floor screed, coarse sand or small crushed stone will be useful. And based on coarse crushed stone, a mixture is made for pouring large structures.
Features of perlite concrete blocks
In civil engineering, two large groups of concrete blocks are most in demand. The first ones are heavy on crushed stone (granite, diorite, basalt, etc.) and sand. The second is light blocks, which include perlite concrete.
They differ from heavy blocks:
- Light weight
Due to this, the load on the foundations and bases of concrete structures is reduced.
- Thermal insulation properties
Lightweight blocks are highly porous and retain heat in the room much better.
- Reduced strength
Such materials are suitable for the construction of low- and high-rise residential buildings, but they cannot withstand extreme loads.
- Easy to use
The blocks are easy to process and can be quickly assembled.
At the same time, they have their own characteristics, due to which they stand out among their “brothers”.
What distinguishes them from other blocks is:
- Strength
- With the same density values, perlite concrete blocks have a higher strength grade than expanded clay, shungizite, slag concrete and other blocks with porous aggregates.
- Low thermal conductivity
Expanded perlite grains consist of 70-90% air, due to which blocks based on it have the highest thermal insulation rates compared to competitors.
- Versatility
Perlite concrete blocks can be used in a wide range of works: from the construction of load-bearing structures to the arrangement of effective thermal insulation.
- Expensive
But this is the main disadvantage of the material. Unlike expanded clay, raw materials for the production of expanded perlite are mainly imported from Greece, Turkey and other countries. Because of this, the cost of concrete and finished products made from it increases.
Production of perlite concrete blocks
Here we will tell you everything about making our blocks
Concrete block making machines Concrete block making machines occupy an important place in the production, use and sale of basic materials needed in the construction industry, such as briquettes, hollow blocks, paving stones, parquet. Block technology, which has been used for centuries, has been used in the form of concrete blocks for a long time, and it is certain that this will continue to be the case. |
The manufacturing technology of perlite concrete blocks includes the following stages:
- Preparation of mold-equipment.
- Mixing components.
- Preparation of the mass.
- Filling.
- Seal.
- Shrinkage and hardening.
- Dismantling the formwork.
- Complete drying and the formed block gains the required strength.
The main feature of this scheme is its applicability to a large volume of poured concrete mass. Since in a small volume of the formwork the mass will begin to separate into dry residue and water, which will lead to inaccuracy in size. The use of a vibrating machine and a press helps to eliminate the problem. Under their influence, concrete acquires a more uniform structure and takes on an accurate shape.
If the recipe is applied correctly, the blocks dry out after 2 days. They will gain sufficient strength for construction no earlier than in 3-4 weeks. During industrial production for this purpose, they are placed in special drying chambers while maintaining a given temperature and humidity conditions.
Perlite based putties
Using the experience gained in the production of perlite concrete blocks and developing our own recipe, we came to the creation of a finishing material that complements our blocks and provides even greater strength and thermal protection - perlite plaster.
Our putty manufacturing technology provides a significant increase in all useful characteristics of the house, and also allows you to place facade finishing materials of any weight, be it siding or natural stone.
After completing all the stages, the output is building materials with high strength, heat and waterproofing properties.
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