THE EFFECTIVE USE OF THE COARSE AGGREGATE IN CONCRETE
Previously existing technical standards recommended the use of crushed gravel and gravel as coarse aggregate for concrete of C12/15 classes, especially in the field of housing construction. The re- fusal of construction industry enterprises to use crushed gravel and gravel as coarse aggregate in the concrete mixture is unjustified and economically unfeasible. The result of comparative studies shows that the use of gravel as coarse aggregate in concrete justified for low strength grade concrete of C12 / 15 classes, for which there are no requirements on frost resistance and water resistance. It is also permissible to use gravel in concrete of C18 / C20-22.5 / 25 classes with the requirements for concrete of F100 и W4 grades.