DefinePK

Abstract

This paper report result of a study conducted on fly ash lightweight aggregates (FALA) in foamed concrete cubes. The type of fly ash used is class C. The effects of using fly ash can be determine by its partial replacement of 5%, 10% and 15% in FALA. The effects of FALA can also be determine by its partial replacement in foamed concrete cubes of 25% and 50%. Three samples for each percentage is made to get the average readings. The test done divided into two which is on FALA and foamed concrete cubes. Among the test are density test, specific gravity test, water absorption test, scanning electron microscope (SEM) test, loading test and compression test. In conclusion for this paper report, the suitable percentage of fly ash that can be used for partial replacement in cement is 15% and 50% for partial replacement of FALA in coarse aggregates. This sample reach the density of 1.498 kg/m? that include in the lightweight aggregates category with the compression strength of 13.442 MPa.