At any construction site, large and not very, it is impossible to do without such a material as crushed stone. This building material is obtained by crushing gravel, boulder and rocks. Of all building materials, it is the most reliable, as it can withstand the strongest loads and has durability. Due to this, it is used in the most critical construction sites.
Crushed stone also has high adhesion, frost resistance, has good indicators of moisture rendering and water absorption. Crushed stone costs much more than gravel, but, despite this, is very popular. In terms of strength, it is divided into several groups. The most durable is the M800-M1200 indicator, weak-M300-M600. These indicators are taken into account if the material is planned to be used for the foundation and the construction of supporting structures.
For the arrangement of territories and landscape work, indicators are not so important. You can buy crushed stone, but you can lose so. To make the purchase successful, it is better to adhere to the rules. So, first of all, you need to pay attention to the flipper indicator. This parameter is not so important if you purchase crushed stone of small fractions, since small stones are well tamped in any case.
But if a large stone is needed, it is necessary to take into account the degree of bream. The lower the bream, the more expensive the crushed stone costs. When using crushed stone with high breastiness, emptiness will remain when laying. If crushed stone is purchased for a region with harsh winters, you need to pay attention to the degree of frost resistance. Material with low frost resistance in Russian conditions will gradually lose its qualities.
Mark frost resistance is determined by the number of freezing and thawing cycles, which the stone can withstand without loss of initial properties. The degree of radioactivity of crushed stone is very important. For the construction of residential buildings, only the first and second degrees of radioactivity are acceptable. The third can be used to lay roads behind the settlements. It makes sense to conduct your examination, t. To. sellers can give one group for another