Influence of Waste Glass and Particulate Coconut Shells as Reinforcement Materials in the Production of Masonry Bricks

Abstract

The mechanical and thermal properties of clay bricks are important parameters that influence the durability and energy consumption of building bricks in service. This study investigates the influence of waste glass when combined with coconut shells on the properties of burnt bricks. Particulate coconut shell (PCS) of $-75\mathrm{\mu m}$ was added to Orita-Obele clay at a varied proportion of clay (0%–2%), while waste glass ($-75\mathrm{\mu m}$ ) was utilized at a constant proportion (25% by weight of clay). The physical, mechanical, and thermal properties of the samples were evaluated as well as efflorescence. The surface morphology of each weight fraction was examined under a scanning electron microscope. From the results obtained, the samples evaluated exhibited reduced porosity, water absorption, initial rate of suction, efflorescence, and wear characteristics. Moreover, the linear shrinkage, bulk density, compressive strength, modulus of rupture, hardness, and thermal conductivity were observed to increase with the addition of waste glass and particulate coconut shell. All samples produced satisfied the minimum strength requirement for masonry application. Hence, PCS and waste glass can be combined in the production of fired masonry bricks.