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Concrete is an artificial stone-like building material, which is a hardened mixture of a binder, water, aggregates and necessary additives. Before hardening, this mixture is called concrete mix. Concrete is rightly considered one of the most important materials of modern construction. The widespread use of concrete is explained by many advantages: Large raw material base. Most of the volume of concrete - up to 85 ... 90% is occupied by sand and coarse aggregate (crushed stone or gravel), the reserves of which are available in almost all regions of the country. In addition, a significant reserve, so far little used, is made up of aggregates made from by-products and waste from other industries - ash from thermal power plants, metallurgical slags, etc. Ease of processing raw materials. The technology for the manufacture of concrete and products from it is associated with the use of simple mechanisms and requires relatively low energy costs. When hardening concrete, the chemical energy of the binder (cement) is used. All this can significantly reduce the cost of construction work. Concrete is an artificial stone-like building material, which is a hardened mixture of a binder, water, aggregates and necessary additives. Before hardening, this mixture is called concrete mix. Concrete is rightly considered one of the most important materials of modern construction. The widespread use of concrete is explained by many advantages: Large raw material base. Most of the volume of concrete - up to 85 ... 90% is occupied by sand and coarse aggregate (crushed stone or gravel), the reserves of which are available in almost all regions of the country. In addition, a significant reserve, so far little used, is made up of aggregates made from by-products and waste from other industries - ash from thermal power plants, metallurgical slags, etc. Ease of processing raw materials. The technology for the manufacture of concrete and products from it is associated with the use of simple mechanisms and requires relatively low energy costs. When hardening concrete, the chemical energy of the binder (cement) is used. All this can significantly reduce the cost of construction work.