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A platform for research: civil engineering, architecture and urbanism
Optimization of Cement Kiln Dust incorporation and Development of Predictive Models for Strength and Durability of Self-compacting Concrete
Cement kiln dust (CKD is often viewed as waste and hazardous material, which has been disposed of in landfills at cement plants. This research employs response surface methodology to optimize and create predictive models for utilizing CKD as a partial replacement for cement in self-compacting concrete (SCC). The initial properties of the materials used and the rheological characteristics, including the L-box, V-funnel, flow, and T50 tests, were valuated to appraise the workability of the self-compacting concrete. The concrete was formulated with CKD at percentages of 0 (control), 5, 10, 15, and 20 % by weight of cement, and a water-cement ratio of 0.35 was used. The findings revealed that the established predictive models for the strengths and durability of the SCC had R2 values of 98.11 %, 87.16 %, and 99.14 % for compressive, splitting tensile strength, and water absorption, respectively. Additionally, the difference between the adjusted and predicted R2 values was under 0.2, suggesting a strong correlation. The optimized strength results showed 32.041 N/mm2 and 3.455 N/mm2 for compressive and split tensile strengths, respectively, at a CKD content of 10.683 %, while water absorption was measured at 2.916 % with a 20 % CKD substitution level and a curing period of 28 days. It is recommended to use 10 % CKD as a partial cement replacement in self-compacting concrete.
Optimization of Cement Kiln Dust incorporation and Development of Predictive Models for Strength and Durability of Self-compacting Concrete
Cement kiln dust (CKD is often viewed as waste and hazardous material, which has been disposed of in landfills at cement plants. This research employs response surface methodology to optimize and create predictive models for utilizing CKD as a partial replacement for cement in self-compacting concrete (SCC). The initial properties of the materials used and the rheological characteristics, including the L-box, V-funnel, flow, and T50 tests, were valuated to appraise the workability of the self-compacting concrete. The concrete was formulated with CKD at percentages of 0 (control), 5, 10, 15, and 20 % by weight of cement, and a water-cement ratio of 0.35 was used. The findings revealed that the established predictive models for the strengths and durability of the SCC had R2 values of 98.11 %, 87.16 %, and 99.14 % for compressive, splitting tensile strength, and water absorption, respectively. Additionally, the difference between the adjusted and predicted R2 values was under 0.2, suggesting a strong correlation. The optimized strength results showed 32.041 N/mm2 and 3.455 N/mm2 for compressive and split tensile strengths, respectively, at a CKD content of 10.683 %, while water absorption was measured at 2.916 % with a 20 % CKD substitution level and a curing period of 28 days. It is recommended to use 10 % CKD as a partial cement replacement in self-compacting concrete.
Optimization of Cement Kiln Dust incorporation and Development of Predictive Models for Strength and Durability of Self-compacting Concrete
Garba, I. (author) / Amartey, Y. D., (author) / Sulaiman, T. A (author) / Yau, Y., (author) / Sabari, A. A., (author) / Abdullahi, M. (author)
2024-11-28
UNIZIK Journal of Engineering and Applied Sciences; Vol. 3 No. 5 (2024): UNIZIK Journal of Engineering and Applied Sciences (In progress); 1370 - 1381 ; 2992-4391 ; 2992-4383
Article (Journal)
Electronic Resource
English
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