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By Recycled aggregate has been widely used to replace natural aggregate to prepare permeable concrete. However, the existing research mainly focuses on its mechanical properties and durability, and it has not been fully shown that the combination of recycled permeable concrete can also solve the air pollution problem. In order to solve the two sustainable goals of recycling construction waste and air purification at the same time, this study first studied the influence of the replacement rate of recycled aggregate on the performance of permeable concrete, and then used the recycled permeable concrete with the best performance as the nano-TiO2 loading material, and tested its photocatalytic performance. The test results show that when the replacement rate is 30%, the compressive strength of recycled permeable concrete reaches the maximum, and the permeability is reduced compared with the control group. When the replacement rate exceeds 50%, the strength of recycled permeable concrete begins to decrease obviously, but the permeability is improved obviously. The photocatalytic performance of nano-TiO2 recycled permeable concrete increases first and then decreases with the increase of nano-TiO2 suspension concentration. The NOX degradation rate of nano-TiO2 permeable concrete prepared with recycled aggregate replacement rate of 30% and nano-TiO2 suspension concentration of 10% reached 56.95%.

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Study on the Performance of a Recycled Pervious Concrete with Degradation of Automobile Exhaust Gas

  • 会议论文

  • 发表日期：

    2025年

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  • Gaowei Liu,
  • Yang Yu,
  • Peijiang Cong,
  • Jie Zhang,
  • Ziqi Lin,
  • Yanchun Li,
  • Guangyuan Xu,
  • Haipeng Wang

摘要

By Recycled aggregate has been widely used to replace natural aggregate to prepare permeable concrete. However, the existing research mainly focuses on its mechanical properties and durability, and it has not been fully shown that the combination of recycled permeable concrete can also solve the air pollution problem. In order to solve the two sustainable goals of recycling construction waste and air purification at the same time, this study first studied the influence of the replacement rate of recycled aggregate on the performance of permeable concrete, and then used the recycled permeable concrete with the best performance as the nano-TiO2 loading material, and tested its photocatalytic performance. The test results show that when the replacement rate is 30%, the compressive strength of recycled permeable concrete reaches the maximum, and the permeability is reduced compared with the control group. When the replacement rate exceeds 50%, the strength of recycled permeable concrete begins to decrease obviously, but the permeability is improved obviously. The photocatalytic performance of nano-TiO2 recycled permeable concrete increases first and then decreases with the increase of nano-TiO2 suspension concentration. The NOX degradation rate of nano-TiO2 permeable concrete prepared with recycled aggregate replacement rate of 30% and nano-TiO2 suspension concentration of 10% reached 56.95%.