Slag crushed stone: description, characteristics, use

Among all construction materials slagcrushed stone is distinguished by its minimum cost. It is difficult to find a substance that would be even cheaper than this material. As a consequence, the total cost of all works will be much lower, which will allow them to compete more effectively in the market.

Slag crushed stone - what is it?

This material is a by-product of wastesteel production. Without going into details, there are two main options for "mining" this substance. In the first case, the rock dumps remaining after processing the metal are used. It's just a pile of stones of different sizes that are sorted by fractions (the sizes of individual parts) and then immediately ready for use. This approach is the cheapest. The second option is a special pouring of slag onto a certain surface, its cooling and subsequent crushing with the help of specialized equipment. So it turns out a little more expensive, but the substance goes out better.

Features & Features

Characteristics of slag crushed stone canvary widely. They are almost entirely dependent on what was the original raw materials, as well as on those technologies that were used in the production of steel. Nevertheless, there are a number of features that make it possible to characterize this substance more accurately.

• The density of slag crushed stone is higher than granite (from 2950 kg / m³ against 2650 kg / m³).
• Absorption of water is also higher (for granite - 0.2%, for slag - from 0.4 to 7.3%).
• Frost resistance is much lower (15 cycles against 300 for granite).

Separately it is necessary to say about the ultimate strength atcompression. If the standard granite material is 120 MPa, then it can vary in slag rubble in a very wide range, starting from 62 MPa (for porous slag) and ending at 140 MPa (for a copper-smelting analog). The same can be said about the index of crushing. In granite crushed stone this characteristic is 11%, and the indicators of slags are also different. Porous - 44%, copper smelting - 6%.

Application

Like any other type of rubble, this material is used in a variety of areas.

• Production of asphalt.
• Making concrete with increased fire resistance.
• Creation of blocks and slabs for industrial buildings.
• Filling the roadway.
• Manufacture of tiles, slag blocks and concrete.
• Production of mineral wool.
• The most beautiful particles can be used in landscape design.

In most cases, it can successfully replacenatural counterparts and will be much cheaper. Nevertheless, due to the characteristic features, especially because of low frost resistance, in some cases, the use of this substance is impossible. That is why slag crushed stone has not been able to completely displace granite, because there are too many places on the territory of Russia, where low temperature is considered the absolute norm and it is there that industrial buildings are usually built. Speaking about the cost, you should also consider varieties of this rubble. For example, the cheapest and, frankly speaking, useless porous material is available literally for a penny. And its copper-smelting analog, really almost inferior to granite (and in some ways superior), will cost only a little cheaper than natural materials.

Outcomes

The main conclusion from all of the above isin that slag crushed stone must be selected based on current needs, as its properties are too different. That is, it is necessary to take just such material, which has all the required characteristics. In one case, it can be the simplest, porous slag crushed stone, and in another only its copper-smelting analogue will do.