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为研究聚丙烯长丝防裂基布缓解沥青路面反射裂缝的效果，选取聚丙烯长丝防裂基布、聚酯长丝针刺土工布及聚酯玻璃纤维布3种土工合成材料，分别进行拉伸变形试验、CBR顶破强力试验、梯形撕破强力试验和刺破强力试验，对比分析3种土工合成材料的物理力学性能。此外，为评价聚丙烯长丝防裂基布用于沥青路面层间的黏结性能与抗裂效果，选择3种路面结构形式AC-25+水泥稳定碎石、AC-25+水泥混凝土、AC-20+AC-25,并在结构层间铺设土工合成材料，分别对3种复合构件进行拉拔和剪切测试。试验结果表明聚丙烯长丝防裂基布的纵、横向力学性能更加均衡，其耐撕破性能优于聚酯长丝针刺土工布和聚酯玻璃纤布。使用聚丙烯长丝防裂基布后沥青路面层的耐拉拔性能与耐剪切性能均优于聚酯长丝针刺土工布与聚酯玻纤布，能够起到良好的防反射裂缝的作用。通过工程应用，进一步证实了聚丙烯长丝防裂基布具有优异的抑制反射裂缝的性能，可有效延长路面寿命。
Abstract：In order to study the effect of polypropylene filament anti-cracking base fabric on crackalleviation in asphalt pavement, three geosynthetic materials were chosen, i.e., polypropylene filament anti-cracking base fabric, polyester filament needle punched geotextile and polyester glass fiber cloth. Tensile deformation test, CBR bursting strength test, trapezoidal strengthtear test and puncture strengthtest were conducted to comparatively analyze the physical and mechanical properties of three geosynthetic materials. Furthermore, in order to evaluate the adhesive performance and anti-crack effect of polypropylene filament anti-cracking base fabric applied in asphaltpavement interlayers, pulling and shearing tests were conducted respectively for three composite components with structural interlayers containing geotextiles, i.e., AC-25+cement stabilized macadam, AC-25+cement concrete and AC-20+AC-25. Test results suggest that longitudinal and transverse mechanical properties of polypropylene filament anti-cracking base fabric are better, and its tearing performance is superior to polyester filament needle punched geotextile and polyester glass fiber cloth. The application of polypropylene filament anti-cracking base between asphalt pavement layers exhibits better pulling strength and shearing strength, with the comparison of polyester filament needle punched geotextile and polyester glass fiber cloth, which suggests that polypropylene filament anti-cracking base fabric plays an good role in the prevention of reflective cracks. It is further confirmed that polypropylene filament anti-cracking base fabric has the superb capability of controllingreflectioncracking via projects, which helps to extend the service life of pavement.
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基本信息:
DOI：10.19782/j.cnki.1674-0610.2025.04.019
中图分类号:U416.217;U418.66
引用信息:
[1]廖志宏,贺春宁,黄毅.聚丙烯长丝防裂基布防反射裂缝性能研究[J].公路工程,2025,50(04):147-151.DOI:10.19782/j.cnki.1674-0610.2025.04.019.
基金信息:
国家重点研发计划项目(2019YFC1904700)
2024-03-18
2024
2024-04-02
2024-05-27
2024
1
2025-02-05
2025-02-05
2025-02-05