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April 15, 2026Composites and Advanced MaterialsOpen Access

Multi-scale mechanisms behind the particle-size effect of basalt powder in concrete performance

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Authors

LJLujun JiaSouthwest University of Science and TechnologyJYJiayuan YeChina Building Materials AcademyJHJichuan HuoSouthwest University of Science and Technology

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Overview

Examines how basalt powder affects concrete strength, highlighting a new design framework for low-carbon materials.

Key Points

  • The research investigates how varying particle sizes of basalt powder influence concrete strength and develops a predictive model.
  • Analyzed four basalt powder sizes (400, 800, 1600, 2400 mesh) as cement substitutes.
  • Measured compressive strength at 3, 7, 28, and 90 days to assess performance.
  • Utilized XRD, TG-DTG, MIP, and SEM to examine hydration, pore structure, and microstructure.
  • Finer basalt powders enhance both early and long-term compressive strength effects.
  • Coarse basalt mainly aids strength through micro-filler effects.
  • Ultrafine basalt contributes to additional C-(A)-S-H formation and reduces porosity.
  • Established a strong inverse linear relationship between D90 and compressive strength at later testing days.

Cite This Study

Jia et al. (2026) studied this question.

synapsesocial.com/papers/69df2b65e4eeef8a2a6b0615https://doi.org/10.1177/26349833261440534
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