Optimizing and Predicting the Performance of Lateritic Concrete Enhanced with PCE-Superplasticizers Using Response Surface Methodology
Abstract
This research employed response surface methodology (RSM) to optimise lateritic concrete with the inclusion of HYDROPLAST 240GP, a PCE superplasticizer, to improve workability and compressive strength while reducing the deleterious impacts of the clay content in laterite. Experimental mixtures with different laterite replacement levels (7.5?30%) of sand fine aggregates and superplasticizer dosages (0.8?1.5%) were assessed were used. compressive strength tests at 7 and 28 days, and microstructural analyses employing SEM, EDX, and XRD techniques were done. The combination of 7.5% laterite replacement and 1.15% HYDROPLAST 240GP resulted in the highest 28-day compressive strength of 22.6 N/mm?, in contrast to 22.09 N/mm? observed in the control sample. SEM, EDX, and XRD analyses showed denser microstructure characterised by reduced porosity, increased calcium silicate hydrate formation, improved hydration products, and a uniform distribution of elements in the optimised mix. The RSM model showed that enhancing laterite replacement at 13?15% with a superplasticizer dosage of approximately 1.15% improved strength and gave good workability. The findings indicate that HYDROPLAST 240GP and RSM effectively optimised lateritic concrete mix designs, providing a cost-efficient and sustainable alternative appropriate for laterite-rich areas.
Keywords
Lateritic concrete, Response Surface Methodology, HYDROPLAST 240GP, Compressive strength
Citations
IRE Journals:
Victor Omosekhoa Ezekiel, Emmanuel Eberechukwu Ndububa, Olumide W. Oseni, Obayehagweme Ezekiel "Optimizing and Predicting the Performance of Lateritic Concrete Enhanced with PCE-Superplasticizers Using Response Surface Methodology" Iconic Research And Engineering Journals Volume 9 Issue 6 2025 Page 1873-1885 https://doi.org/10.64388/IREV9I6-1713071
IEEE:
Victor Omosekhoa Ezekiel, Emmanuel Eberechukwu Ndububa, Olumide W. Oseni, Obayehagweme Ezekiel
"Optimizing and Predicting the Performance of Lateritic Concrete Enhanced with PCE-Superplasticizers Using Response Surface Methodology" Iconic Research And Engineering Journals, 9(6) https://doi.org/10.64388/IREV9I6-1713071
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