Pengaruh Gradasi Agregat Kasar Lempung Bakar pada Beton Ringan

Abstract

Coarse aggregate from burned clay is an alternative for lightweight structuralmembers in area that has abundant source of clay. The aggregates were made byshaping clay to round aggregates and baking them at furnace. There were four sizevariation of coarse aggregates, namely 25-4.75, 19-4.75, 12.5-4.75 and 9.5-2.36mm. Research shows that burned clay produced lightweight concrete with densityof 1867.041 kg/m3. The highest compressive strength was 22.63 MPa with coarseaggregates range of 4.75-19 mm. While a gradual decrease of Modulus Elascitywas observed with aggregates range of 19-4,75 mm.

Keywords: burned clay, compressive strength, lightweight coarse aggregate,modulus of elasticity