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June 20, 2026Case Studies in Construction MaterialsOpen Access

Research on the effect of aggregate characteristics influencing macro-mechanical degradation and meso-damage evolution in coal gangue concrete with freeze-thaw performance

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Authors

BWBin WuGBGuoliang BaiXCXiaolong Chen

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Overview

Randomized trial investigates aggregate properties affecting mechanical performance in coal gangue concrete, suggesting implications for durability.

Key Points

  • To explore how variations in aggregate properties affect the mechanical performance and damage evolution of coal gangue concrete under freeze-thaw conditions.
  • Examined two typical types of coal gangue as coarse aggregates in concrete.
  • Tested different replacement ratios (0, 40%, 70%, 100%) and freeze-thaw cycles (0, 25, 50, 75, 100).
  • Utilized a multi-scale methodology combining macro and micro-scale analyses (NMR, XRD, XRF, SEM) to assess performance and mechanisms.
  • High quartz content in coal gangue aggregates improves concrete mechanical performance.
  • Increased aggregate replacement ratios lead to greater susceptibility to freeze-thaw damage.
  • Freeze-thaw cycles significantly deteriorate concrete's internal structure, increasing brittleness after peak stress.

Cite This Study

Wu et al. (2026) studied this question.

synapsesocial.com/papers/6a362ebddb0793dc1a53666fhttps://doi.org/10.1016/j.cscm.2026.e06252
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Also Consider

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