Treatment of Clay with Oil Palm Fibre Ash and Rice Husk Ash Mixture for Burnt Clay Bricks Production
Publication Date: 18/10/2022
Author(s): Amos Yala Iorliam, Robert Ahen Chenge, Dickson Sooter Kuhwa.
Volume/Issue: Volume 5 , Issue 1 (2022)
Abstract:
The current study examines the use of oil palm fibre ash (OPFA) and rice husk ash (RHA) mixture in the treatment of A-6 Makurdi clay for burnt brick production. The results show that the compressive strength of 9.4 MN/m2 for burnt untreated brick increased to 10.86 MN/m2 for burnt 2%OPFA+2%RHA treated brick. The corresponding water absorption of 14.9% for the burnt untreated brick increased to 16.2% for burnt 2%OPFA+2%RHA treated brick. The strength value of 10.86 MN/m2 is greater than 10.3 MN/m^2 which is the minimum strength value for negligible weather (NW) conditions. The water absorption of 16.2% is less than 17%, 22% and ‘no limit’ which are the maximum values for severe weather (SW), moderate weather (MW) and NW respectively. Based on combined strength and water absorption criteria, burnt bricks production with 2%OPFA+2%RHA treated A-6 Makurdi clay is adequate for use as a load-bearing brick in wall areas of NW condition.
Keywords:
Burnt clay bricks, oil palm fibre ash, rice husk ash, compressive strength, water absorption.
