In the vastness of the former Soviet Union, the most active industry is now – construction. Any object that is being built at a construction site begins with the foundation. For strong and prolonged service of this part of the building, concrete with high -quality filler, which is crushed stone, need concrete. This granular and loose material is obtained when crushing rocks of stone, boulders, gravel. Building crushed stone is still obtained after additional processing, from the waste of enterprises that are engaged in the extraction of ferrous and non -ferrous metals. Crushed stone grains have a size of more than 5 mm. In European countries, the standard size has been adopted – more than 3 mm.
Information about the stone, as a filler, can be read in the work “Ten Books on Architecture” by the ancient Roman builder of Vitruvius. The tract was written during the reign of Emperor Augustus and was dedicated to it. The book summarizes the experience of building Greeks and Romans. Vitruvius in his second book (chapter 4) gives the Romans when harvesting crushed stone and missile stone, that these materials must be harvested in summer and not in winter. After mining, he must lie down for two years. Then you need to sort it out. The stone that was damaged by the weather went to the foundation. The material that withstood the test was used in the aboveground part of the building, because nature itself experienced its strength.
Crushed stone is made of various breeds of stone, respectively, and it is called gravel, granite, slag, limestone, secondary. You can find out more about the types of construction crushed stone and its application on the Crushedstone website. HTM. The main characteristics of crushed stone are durability, fluidity, grain composition, shape, radioactivity, resistance to frost, water absorption. Flying parameters determine how flat construction crushed stone. The smaller the indicator, the higher the quality of the stone.
Frost resistance is checked in the laboratory by freezing and thawing. The figure in this parameter is how many “freezing and thawing” cycles have passed the material. The strength of crushed stone depends on the strength of the breed from which it is made. It is high -strength, durable, medium strength, weak and very weak. The high-strength crushed stone has the “M1200-1400” parameter, very weak-“M200”. The fraction indicator indicates the size of the grain.