Volume 5, Issue 6, December 2020, Page: 178-190
Assessment of Artisan Clay Bricks for Structural Strength, Chemical Stability and Durability
Nabbala Moses Mumpembe, Civil and Building Engineering Department, Faculty of Engineering, Kyambogo University, Kampala, Uganda
Muhwezi Lawrence, Civil and Building Engineering Department, Faculty of Engineering, Kyambogo University, Kampala, Uganda
Kyakula Michael, Civil and Building Engineering Department, Faculty of Engineering, Kyambogo University, Kampala, Uganda
Received: Nov. 28, 2020;       Accepted: Dec. 17, 2020;       Published: Dec. 31, 2020
DOI: 10.11648/j.jccee.20200506.15      View  34      Downloads  13
Abstract
The artisan clay bricks in Uganda are characterised with low strength, erosion, tiny cracks, lime pop out, warping, efflorescence occurrence and high-water absorption. The raw clay and artisan burnt clay brick samples were collected from artisan brick making places (sites) from Eastern, Central and Northern Uganda. The sampling was done using IS-5454 procedures. Testing was carried out for; water absorption, mineral percentage investigation in natural and purified clay in terms of SiO2, Al2O3, Fe2O3 & CaO, compressive strength of the artisan clay unit, improved chemical composition artisan clay units from purified clay and improved molded bricks from raw clay. Results indicated mineral requirements for manufacturing bricks was not satisfactory, for artisan bricks, they had very low characteristic strengths of 0.63N/mm2 for Lira and 0.38N/mm2 for Mukono. Refining and change on molding process was done and the raw clay structure shifted to the positive side of the required mineralogy. Fired bricks on testing gave higher characteristic strengths of 2.2 (improved chemical composition bricks) and 3.3 (improved molded bricks) for Lira, 5.12 (improved chemical composition bricks) and 2.62N/mm2 (improved molded bricks) for Mukono, slight efflorescence and low water absorption. Studies therefore recommend that the artisan do include both refining processing and constant force kneaded clay pressing in the manufacturing process.
Keywords
Brick for Structural Strength, Chemical Stability, Durability
To cite this article
Nabbala Moses Mumpembe, Muhwezi Lawrence, Kyakula Michael, Assessment of Artisan Clay Bricks for Structural Strength, Chemical Stability and Durability, Journal of Civil, Construction and Environmental Engineering. Vol. 5, No. 6, 2020, pp. 178-190. doi: 10.11648/j.jccee.20200506.15
Copyright
Copyright © 2020 Authors retain the copyright of this article.
This article is an open access article distributed under the Creative Commons Attribution License (http://creativecommons.org/licenses/by/4.0/) which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
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