STUDY OF THE PROPERTIES OF CONCRETE WITH EXPANDED CLAY WASTE FILLER

The chemical composition of expanded clay, its physicochemical properties and granulometric composition were studied. The effect of expanded clay dust additive – waste from expanded clay production (Azerbaijan) on the compressive and flexural strength of concrete was investigated. It was found that the introduction of expanded clay additive in the amount of 2-10% slightly reduces the compressive strength from 46.2 to 44.5 MPa, and the compressive strength from 29.8 to 28.3 MPa passing through a maximum at 4% expanded clay to 30 MPa, respectively. An increase in the expanded clay content above 10% is accompanied by a decrease in the strength of concrete.