Stabilisation of Bricks with Shea Butter Residue for Housing

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Yalley, Paa Kofi Peter
P., Zievie
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International Journal of Civil Engineering Research.
Investigations were conducted on the bricks without stabilisation and with chemical stabilisation by adding 2%, 4%,6%, and 8% of shea butter oil processing residue “shea butter residue” weight of soil and its effect on the dry density, compressive strengths, abrasive resistance and water absorption coefficients at different moistures contents were analysed after 28-days of air curing. A local Kaleo-Wa, Ghana soil was chemically stabilised by shea butter residue. A better compressive strength was obtained with shea butter residue stabilisation, and best values were obtained at shea butter residue content of 4%. Optimal water content was sought to get higher strength and higher durability. Abrasive resistance increased with increase in the shea butter residue content. This then implied that the shea butter residue in the brick helped to reduce wear of the bricks from external factors. shea butter residue stabilisation reduced substantially the absorptivity from 3.06% for 0% shea butter residue content to 2.79%, 2.53%, 2.36% and 2.22% when the shea butter residue content was 2%, 4%, 6% and 8% respectively. shea butter residue content in the blocks thus resulted in lower migration of water into the bricks (i e. lower permeability). Bricks stabilised with shea butter residue are largely dependent on local readily available raw materials and labour and are appropriate building materials which should be a viable alternative to the more expensive building materials such as shea butter residuet stabilised soil blocks currently used in Ghana for walling of low cost housing.
Yalley, P. P., & Zievie, P. Stabilisation of Bricks with Shea Butter Residue for Housing.