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Light Weight Clay Bricks in Combination of Sludge Blended with Agro/Wastes

The objective of the study is to produce light weight bricks to use as an isolating layer. So, porous or light weight bricks were prepared from clay, sludge, agro/ashes as Saw dust ash (DSA), sugarcane bagasse ash (SCBA) and corn stalk ash (CSA) fired up to 900°C. Physical and mechanical properties were investigated. The chemical composition of the starting raw materials was carried out by XRF analysis. Results proved that the water absorption (25.51, 25.74 and 25.86%) and apparent porosity (29.31, 29.51 and 29. 68%) were slightly lowered up to 6 wt. % of these waste ashes, and then increased with further increase. The bulk density (1.9989, 1.9987 and 1.9985 g/cm3) and compressive strength (48.54, 48.45 and 48.26 MPa) improved and enhanced with the replacement up to 6 wt. %, and then diminished. So, the optimum ash content was not more than 6 wt. % because the substitution of more than that bad or adverse effect was exhibited. Results also proved that the physical and compressive strength was better in case of SDA > SCBA > CSA. The prepared fired bricks could be successfully used and preferred as isolating bricks against heat.

Clay, Sludge, Bricks, Water Absorption, Density, Porosity, Strength

APA Style

Hassan Hassanien Mohamed Darweesh. (2021). Light Weight Clay Bricks in Combination of Sludge Blended with Agro/Wastes. Journal of Biomaterials, 5(2), 16-22.

ACS Style

Hassan Hassanien Mohamed Darweesh. Light Weight Clay Bricks in Combination of Sludge Blended with Agro/Wastes. J. Biomater. 2021, 5(2), 16-22. doi: 10.11648/j.jb.20210502.11

AMA Style

Hassan Hassanien Mohamed Darweesh. Light Weight Clay Bricks in Combination of Sludge Blended with Agro/Wastes. J Biomater. 2021;5(2):16-22. doi: 10.11648/j.jb.20210502.11

Copyright © 2021 Authors retain the copyright of this article.
This article is an open access article distributed under the Creative Commons Attribution License ( which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

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