Durability of Bricks Cast With Industrial Sludge

Abstract

Recovery of waste constituents from industrial waste is a cost effective solution in control of environmental pollution. Present investigation deals with the feasibility of usage of sludge obtained from sand beneficiation treatment plant in the production of bricks and their durability. The experimental results show that the brick earth can be replaced with treatment plant sludge up to 40% by weight without loss in strength and other brick characteristics considered satisfactory for conventional purposes. Apart from that when reference specimens and test bricks (5% Sludge) were immersed in various concentrations of hydrochloric acid (HCl) solution at different immersed ages, the loss of weight is found to be less in test bricks than that in reference bricks. Hence, at 5% of replacement, the quality of bricks is superior to the bricks made from earth alone and can be used for superior work of permanent nature.