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为提高微表处的抗水损性及高温稳定性,在传统微表处材料中添加了聚丙烯单丝纤维,并对其路用性能进行了试验研究。通过拌和时间试验确定了其合理拌和时间,利用粘聚力、湿轮磨耗、负荷车轮粘砂、轮辙变形、以及低温劈裂试验,对该材料的纤维用量上限、耐磨和抗水损害能力、抗车辙性能、以及低温抗裂性等进行了试验评价。研究发现聚丙烯单丝纤维微表处存在最佳纤维掺量,该值在0.1%～0.3%之间。试验结果表明添加适量的聚丙烯单丝纤维后,可有效改善微表处材料的粘附性和整体路用性能,该材料为高温多雨重载交通条件下的微表处工艺提供了新的技术方案。
In order to improve the water resistance and high temperature stability of micro-surfacing, polypropylene monofilament fiber was added into the traditional micro-surfacing materials, and the road performance of the micro-surfacing was tested. Through the mixing time test to determine the reasonable mixing time, the use of cohesion, wet wheel wear, load wheel sticky sand, wheel deformation, and low temperature splitting test, the fiber content of the upper limit, abrasion and water damage resistance , Anti-rutting performance, and low temperature crack resistance were evaluated. The results showed that the optimal fiber content exists in the micro-surfacial area of polypropylene monofilament fiber, which is between 0.1% and 0.3%. The test results show that adding appropriate amount of polypropylene monofilament fiber can effectively improve the adhesion of micro-surfacing materials and overall road performance, which provides a new technology for micro-surfacing under heavy rain and heavy traffic conditions Program.