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In order to improve the cracking resistance of recycled concrete beams, different admixture amounts of nano-silica were varied and ANSYS finite element simulations were performed to analyse their effect on the cracking resistance of recycled concrete beams. By observing the damage of the simulated specimens and obtaining the cracking load, yielding load, deflection, cracking stress, yield stress and crack development in the cracked and yielded states of the specimens; the influence of nano-silica on the cracking resistance of the recycled concrete beams was deeply analysed. The results of the study show that when the doping of nanosilica is appropriate in the range of 1%, the cracking load enhancement is the most obvious, the effect on cracking load is the most significant, and the mitigation effect on crack damage is the most obvious.

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Finite Element Analysis of Cracking Resistance of RAC Beams with Different Dosage of Silica Nanoparticles

  • 会议论文

  • 发表日期：

    2025年

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  • Tingzhou Luo,
  • Changchun Pei

摘要

In order to improve the cracking resistance of recycled concrete beams, different admixture amounts of nano-silica were varied and ANSYS finite element simulations were performed to analyse their effect on the cracking resistance of recycled concrete beams. By observing the damage of the simulated specimens and obtaining the cracking load, yielding load, deflection, cracking stress, yield stress and crack development in the cracked and yielded states of the specimens; the influence of nano-silica on the cracking resistance of the recycled concrete beams was deeply analysed. The results of the study show that when the doping of nanosilica is appropriate in the range of 1%, the cracking load enhancement is the most obvious, the effect on cracking load is the most significant, and the mitigation effect on crack damage is the most obvious.