Analysis of Light Mortar Compressive Strength Test with The Addition of Bottom Ash Mixture as A Fine Aggregate Substitution Dedi Enda, Roma Dearni, and Dewita Mahrani
Civil Engineering Department Politeknik of Bengkalis, Bengkalis, Indonesia
Abstract
Bottom ash, categorized as non-b3 waste, resembles coarse grains and is used as a substitute for sand in lightweight mortar, affecting its physical properties. This experimental research aims to compare mortars 1PC : 1PS, will determine the compressive strength of lightweight mortar for use on wall elementsprecast with the addition of a mixture of coal waste (bottom ash) as an aggregate substitute fine. This research compares the compressive strength of lightweight mortars using varying percentages (25%, 50%, 75%) of bottom ash and different foam contents (30%, 50%). Results indicate that the density of the mortars ranges from 925.95 to 1467.49 kg/m3, with optimal compressive strength occurring at 25%-50% bottom ash and 50% foaming agent, yielding quality increases of 99.55% and 89.73% compared to no bottom ash.
