Effect of Partial Replacement of Cement with Clay on the Compressive Strength of Concrete.
This study investigated the impact of partially replacing cement with clay on the compressive strength and physical properties of concrete. The primary objective is to explore sustainable alternatives to cement in concrete production by using locally available clay while ensuring that the performanc...
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| Format: | Thesis |
| Language: | English |
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Kabale University
2024
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| Subjects: | |
| Online Access: | http://hdl.handle.net/20.500.12493/2578 |
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| Summary: | This study investigated the impact of partially replacing cement with clay on the compressive strength and physical properties of concrete. The primary objective is to explore sustainable alternatives to cement in concrete production by using locally available clay while ensuring that the performance of the modified concrete remains within acceptable standards. Clay was introduced at varying percentages (0%, 5%, 10%, 15%, 20%, and 25%) by weight as a replacement for cement in the mix. Tests were conducted to assess the slump, wet density, bleeding, and compressive strength of concrete specimens at 7, 14, and 28 days of curing. The results indicate a decrease in workability and compressive strength with increasing clay content, though up to 10% replacement showed acceptable performance for non-structural applications. The study concludes that a 10% clay replacement is a viable and sustainable option for reducing cement usage without significantly compromising concrete strength. This research provides valuable insights into sustainable construction practices and proposes guidelines for the partial substitution of cement with clay. Recommendations are made for further studies to explore the use of additives or supplementary cementitious materials that could enhance the pozzolanic activity of clay, thereby improving the compressive strength of concrete with higher clay content. |
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