Scholarlink

<p>This Permeable concrete is the core material of sponge city, and the porous structure has the advantages of water permeability, noise reduction, and waterlogging alleviation. This structure leads to problems such as insufficient mechanical properties and poor wear resistance. In this study, the influence mechanism of wear resistance and freeze-thaw resistance was explored by optimizing the mix ratio through orthogonal tests, combined with the wear resistance of Los Angeles wear, drum wear resistance, freeze-thaw cycle and erosion test. The results showed that when the water reducer was 0.3% and 20% fly ash, the compressive strength was 27.32&#xa0;MPa and the flexural strength was 3.2&#xa0;MPa. The water permeability coefficient was 5.89&#xa0;mm/s when the water-cement ratio was 0.25, which was 53.04% higher than that of the hydro-cement ratio of 0.32. When the latex powder is 10% and S95 mineral powder is 5%, the wear mass loss rate is 6.78%, and the length of the grinding pit is 6.92&#xa0;mm, which meets the wear resistance standard of GB/T 12,988 − 2009. The compressive strength (R²=0.88) and flexural strength (R²=0.82) were negatively correlated with the length of the grinding pit, and the correlation between compressive strength was better. The erosion test showed that 45° was the best, and the loss rates were 8%, 12% and 23% lower than those of 30°, 60° and 90°, respectively. This paper studies its wear resistance and freeze-thaw resistance, which can expand its application scenarios and provide key technical support for the promotion of light-load permeable pavement.</p>

错误：搜索内容不能为空，请输入英文关键词
错误：关键词超出字数限制，请精简
高级检索

Study on Preparation and Friction and Wear Properties of Light-Load Permeable Concrete

  • 期刊论文

  • 发表日期：

    2026年3月8日

查看全文
  • Qidan Xiao,
  • Hao Chang,
  • He Yu,
  • Kun Niu

摘要

This Permeable concrete is the core material of sponge city, and the porous structure has the advantages of water permeability, noise reduction, and waterlogging alleviation. This structure leads to problems such as insufficient mechanical properties and poor wear resistance. In this study, the influence mechanism of wear resistance and freeze-thaw resistance was explored by optimizing the mix ratio through orthogonal tests, combined with the wear resistance of Los Angeles wear, drum wear resistance, freeze-thaw cycle and erosion test. The results showed that when the water reducer was 0.3% and 20% fly ash, the compressive strength was 27.32 MPa and the flexural strength was 3.2 MPa. The water permeability coefficient was 5.89 mm/s when the water-cement ratio was 0.25, which was 53.04% higher than that of the hydro-cement ratio of 0.32. When the latex powder is 10% and S95 mineral powder is 5%, the wear mass loss rate is 6.78%, and the length of the grinding pit is 6.92 mm, which meets the wear resistance standard of GB/T 12,988 − 2009. The compressive strength (R²=0.88) and flexural strength (R²=0.82) were negatively correlated with the length of the grinding pit, and the correlation between compressive strength was better. The erosion test showed that 45° was the best, and the loss rates were 8%, 12% and 23% lower than those of 30°, 60° and 90°, respectively. This paper studies its wear resistance and freeze-thaw resistance, which can expand its application scenarios and provide key technical support for the promotion of light-load permeable pavement.