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PS路面强力剂是一种新型的外掺式复合聚合物改性剂,专用于沥青混合料的改性。采用AC-13C型沥青混合料,以基质沥青和混合料的不同改性技术(SBS、Sasobit、PLAST.S)为参照,系统研究了外掺PS沥青混合料的高温稳定性、低温抗裂性、水稳定性、抗疲劳性等路用性能,以及PS剂量对路用性能的影响。研究结果表明,PS路面强力剂能有效改善沥青混合料的各项路用性能,尤其是对高温稳定性改善甚为显著,且外掺PS剂量与路用性能的改善直接相关,同其他3种改性方式(SBS、Sasobit、PLAST.S)相比,PS路面强力剂具有更好的性价比和优良的可操作性,因而具有良好的应用前景。
PS pavement strength agent is a new type of external admixture polymer modifier, dedicated to asphalt mixture modification. The AC-13C asphalt mixture was used as a reference to systematically study the high temperature stability and low temperature crack resistance of PS admixture with different modification technologies (SBS, Sasobit, PLAST.S) , Water stability, fatigue resistance and other road performance, as well as the impact of PS dose on road performance. The results show that PS pavement strength agent can effectively improve the road performance of asphalt mixture, especially for the improvement of high temperature stability is very significant, and the addition of PS dose is directly related to road performance improvement, with the other three Compared with the modified method (SBS, Sasobit, PLAST.S), PS pavement strength agent has better cost performance and excellent operability, so it has good application prospects.