The Development of Lightweight Clay Brick with Added Bagasse Ash

Abstract

This research aimed to reuse bagasse ash waste to improve the properties of clay
brick by adding 10, 20, 30, and 40 percentage of bagasse ash by weight in clay and firing at
temperatures of 700, 800, 900, and 1000o C. The result showed that addition of bagasse
ash resulted in increases of porosity and absorption of water, whereas it caused decreases
in density, compressive strength, shrinkage and thermal conductivity. Increasing sintering
temperatures resulted in decreased porosity and water absorption, however, density,
compressive strength, shrinkage and thermal conductivity increased. The maximum
porosity values were found with the additional 40 percent of bagasse ash sintered at 700o
C. When adding 40 percent of bagasse ash, and sintering at 1000o C, brick samples had the
density, compressive strength and water absorption required by Thai industrial standard of
lightweight brick TIS. 2601 - 2556, with a density of 1.2 g/cm3, compressive strength of 9.42
MPa and thermal conductivity of 0.45 W/m•K and the water absorption of 21.19 %.