Optimizing and Predicting the Performance of Lateritic Concrete Enhanced with PCE-Superplasticizers Using Response Surface Methodology

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@article{1713071,
      author = {Victor Omosekhoa Ezekiel, Emmanuel Eberechukwu Ndububa, Olumide W. Oseni, Obayehagweme Ezekiel},
      title = {Optimizing and Predicting the Performance of Lateritic Concrete Enhanced with PCE-Superplasticizers Using Response Surface Methodology},
      journal = {Iconic Research And Engineering Journals},
      year = {2025},
      volume = {9},
      number = {6},
      pages = {1873-1885},
      issn = {2456-8880},
      url = {https://www.irejournals.com/formatedpaper/1713071.pdf},
      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},
      month = {December},
      doi = {https://doi.org/10.64388/IREV9I6-1713071}
  }