新型沥青添加剂TPS的性能

为了了解新型添加剂TPS的路用性能,进行了不同TPS掺量的沥青胶结料的针入度试验、软化点试验、稠度试验、延度及测力延度试验、弹性恢复试验及弯曲蠕变试验、直接拉伸试验,对加入TPS添加剂后的沥青混合料,进行了车辙试验、弯曲破坏试验、疲劳试验和冻融劈裂试验,并与SBS改性沥青混合料的部分试验结果进行了对比。结果表明添加TPS后,沥青胶结料的感温性、高温性与低温性及沥青混合料的高温稳定性、低温抗裂性、抗疲劳性和水稳定性都得到了较大程度的提高,添加TPS沥青混凝土具有良好的路用性能。

Performances of new type asphalt additive TPS

To study the field performances of new type asphalt additive TPS,penetration test,ductility test,softening point test,consistency test,direct tension test,bending beam rheometer test and elastic recovery test were done to asphalt binders modified with TPS,and rutting test,fatigue test,bending beam damage test,moisture damage test were done to asphalt mixtures modified with TPS.The comparison of the test results and the performances of SBS modified asphalt mixture indicates that TPS can improve not only the temperature sensitivity,high temperature stability,low temperature performance of asphalt,but also the high temperature stability,low temperature anti-crack performance,anti-fatigue stability,moisture stability of asphalt mixture,asphalt mixture modified with TPS have good field performances.10 tabs,(7 figs,) 10 refs.