Performance of low-cost Concrete using Bentonite clay as a partial replacement with Cement

Usama, Muhammad; Ullah, Ubaid; Muhammad, Zaid; Abbas, Muhammad

doi:10.37650/ijce.2024.180204

	Performance of low-cost Concrete using Bentonite clay as a partial replacement with Cement
Iraqi Journal of Civil Engineering
Volume 18, Issue 2, December 2024, Pages 39-51 PDF (906.54 K)
Document Type: Review Paper
DOI: 10.37650/ijce.2024.180204
Authors
Muhammad Usama^* ¹; Ubaid Ullah²; Zaid Muhammad³; Muhammad Abbas⁴
¹Department of Civil Engineering, Wah Engineering College, University of Wah, Wah Cantt,
²Department of Civil Engineering, Wah Engineering College, University of Wah, Wah Cantt, 47040, Pakistan
³Abdul Wali Khan University, Mardan
⁴University of Wah, Wah Cantt, 47040, Pakistan
Abstract
Concrete is produced from millions of tons of Cement, which emits a significant amount of carbon dioxide from cement mills and contributes to global warming. Therefore, it is important to seek out less expensive and more environmentally friendly substitutes for OPC. While various substitutes are available, such as recycled glass, marble, silica fume fly ash, or agricultural waste like rice husks or wheat straw, the performance of concrete is significantly affected when bentonite is used as a replacement for Cement. This study aims to evaluate Jhelum bentonite, which is located at 32°56′ north and 73°44′ east longitude, as a replacement for Cement in different ratios (0:100, 10:90, 20:80, 30:70, and 40:60) to improve the durability of the system as more bentonite is used to replace conventional Portland cement, the workability, density, and water absorption of the new concrete all decrease. Compressive Strength, Tensile Strength, and flexural Strength of blocks and cylinders were tested after being cured for 7 and 28 days. Analysis of these strength tests revealed that the mixes containing bentonite were weaker after 7 days compared to 28 days, and the Strength of blocks was reasonable compared to cylinders. Keywords: Bentonite, Concrete, Compressive Strength, Tensile Strength.
Keywords
Bentonite; Concrete; Compressive Strength; Tensile Strength; Flexural Strength

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