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April 15, 2026Green Chemical TechnologyOpen Access

Optimization of Fly Ash-Based Composite Cementitious Material Proportion Using Box-Behnken Response Surface Methodology

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Authors

XHXia HaoyuZLZhang LiuZZZou Ziyu

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Overview

Optimization study reveals effective proportions for composite cementitious materials to enhance strength and utilization of waste.

Key Points

  • This research aims to optimize the blending ratios of fly ash, coal-fired slag, and desulfurization gypsum in cementitious materials.
  • Established Box-Behnken response surface model using coal-fired slag, desulfurization gypsum, and cement as factors.
  • Systematically optimized ratios without additional activation.
  • Analyzed hydration and microstructural evolution via XRD/SEM.
  • Achieved optimal mix ratio: CS 21.38%, DG 10.96%, cement 16.15%, FA 51.51%.
  • 7d compressive strength of 13.60 MPa and 28d strength of 19.07 MPa.
  • Statistical validity with R2 values of 0.9918 for 7d and 0.9979 for 28d strength.

Cite This Study

Haoyu et al. (2026) studied this question.

synapsesocial.com/papers/69df2b65e4eeef8a2a6b05c4https://doi.org/10.70322/gct.2026.10009
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