Kajian Perilaku Mekanikal dan Simulasi Fem pada Cellular Light Weight Composite Berbasis Fly Ash, Abu Cangkang Sawit dan Variasi Serbuk Kayu untuk Pembuatan Dinding Partisi

Abstract

The development of lightweight composite materials continues to advance in support of environmentally friendly construction. This study explores the formulation of Cellular Lightweight Composite (CLComp) based on fly ash, palm shell ash, and varying amounts of sawdust as alternative materials for partition wall applications. These waste-derived materials are rich in silica and alumina, functioning effectively as supplementary cementitious materials. The aim of this research is to evaluate the mechanical and thermal characteristics of the developed CLComp and assess its performance through numerical simulation using the finite element method (FEM) in Abaqus software. Experimental methods include the fabrication of specimens with sawdust variations of 0–15%, fixed fly ash content of 15%, and palm shell ash ranging from 0–15%. Laboratory tests were conducted to measure compressive strength, indirect tensile strength, high-speed and drop-weight impact resistance, and thermal conductivity. Each specimen was prepared according to the specific standard for its corresponding test. Numerical simulations were performed to examine the structural response of partition walls under static, dynamic, and thermal loading conditions. The results indicate that the optimal composition is achieved with 10% sawdust and 15% fly ash, providing the best balance between mechanical strength and thermal performance. The numerical simulations further validated the structural and insulation capabilities of the CLComp. This study suggests that CLComp is a viable alternative material for non-structural applications such as partition walls, offering benefits in weight reduction, cost efficiency, and environmental sustainability.