掺加PR系列添加剂对沥青混合料高温性能的影响

Impacts on Asphalt Mixture's High Temperature Performance with PR Series Additives Added

选用车辙试验和恒定高度重复剪切试验(RSCH)来进行掺加PR系列添加剂沥青混合料的高温性能研究。两者试验结果的对比分析表明,由于动稳定度及车辙深度2个指标经常出现背离,因此车辙试验不适合用来评价掺加PR系列添加剂混合料的高温性能;而RSCH所得到的K1、K2、N和γ各个指标呈现出很好的相关性和一致性,能很好的对掺加PR系列添加剂混合料的高温性能进行评价。RSCH试验结果表明,就高温抗剪性能而言,掺加PR PLAST S(PR.S)添加剂混合料最好,掺加PR FLEX MODULE(PR.M)添加剂混合料次之,未掺加PR系列添加剂混合料最差。

Impacts on asphalt mixture＇ s high temperature performance with PR series additives added by means of rotting test and Repeated Shear Test （Constant Height） （RSCH） were investigated.The analytic results of the two tests show that （ 1 ） rutting test is not suitable for the high temperature performance evaluation of asphalt mixture with PR series additives added for the reason of the conflict between dynamic stability and rut depth; （2） the results of RSCH, such as K1, K2, N and 7 show very well consistency which is suitable for the high temperature performance evaluation of asphalt mixture with PR series additives added. The results of RSCH show that asphalt mixture with PR PLAST S （PR.S） added has the best performance, the PR FLEX MODULE （PR.M） one is the next and the original one is the worst for the high temperature anti-shear performance.