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<p>This study evaluates the role of particle size optimization on the key properties of mortar incorporating high volumes of waste glass powder (WGP). A comparative analysis was conducted between traditional WGP (TWGP) and optimized, redistributed WGP (RWGP). Pore structure, mechanical properties, and shrinkage behavior were evaluated. Results demonstrate that the 50% RWGP mixture achieved mechanical strength comparable to the reference, while simultaneously reducing 28-day shrinkage by up to 30.0%. Microstructural analysis reveals that the superior performance of RWGP originates from a more homogeneous pore structure. Furthermore, a modified shrinkage prediction model was developed by incorporating an accurate characterization of the time-dependent cement hydration degree, demonstrating high predictive accuracy for the behavior of high-volume WGP mixtures.</p>

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Shrinkage evolution and modelling of cement mortar incorporating high-volume size-optimized waste glass powder

  • 期刊论文

  • 发表日期：

    2026年5月13日

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  • Xiwen Zhang,
  • Fengming Ren,
  • Qing Wang,
  • Chulin Lai,
  • Jianrong Xiong

摘要

This study evaluates the role of particle size optimization on the key properties of mortar incorporating high volumes of waste glass powder (WGP). A comparative analysis was conducted between traditional WGP (TWGP) and optimized, redistributed WGP (RWGP). Pore structure, mechanical properties, and shrinkage behavior were evaluated. Results demonstrate that the 50% RWGP mixture achieved mechanical strength comparable to the reference, while simultaneously reducing 28-day shrinkage by up to 30.0%. Microstructural analysis reveals that the superior performance of RWGP originates from a more homogeneous pore structure. Furthermore, a modified shrinkage prediction model was developed by incorporating an accurate characterization of the time-dependent cement hydration degree, demonstrating high predictive accuracy for the behavior of high-volume WGP mixtures.