ABSTRACT

Using polymer modification and warm mix modification together can result in modified binders having superlative performance along with normal mixing and compaction temperature. Over the decades, different experimental methods have been used to study rutting and fatigue performances of asphalt binders and mixes. Currently, advanced performance evaluation tests like multiple stress creep and recovery, linear amplitude sweep, wheel rut tester, and four-point bending beam test are being used. In the present study, warm mix polymer modified binder was prepared by using both polymer modifier, i.e. styrene butadiene styrene and warm mix modifier, i.e. zycotherm together. Then by using these advanced tests, rutting and fatigue performances of asphalt binder and mix were evaluated at different stress levels and temperatures. A correlation was established between the asphalt binder and mix performance. Stress susceptibility was also evaluated. Using both the modification methods did not show any compatibility problems. Mixes prepared using warm mix polymer modified binder were found to have improved performance along with lower production temperature. further performance evaluation tests of asphalt binder and mixes were found to have a very good correlation with each other.

摘要

一起使用聚合物改性和温混改性可以得到具有最佳性能以及正常混合和压实温度的改性粘合剂。几十年来，已经使用不同的实验方法来研究沥青结合料和混合料的车辙和疲劳性能。目前，正在使用先进的性能评估测试，如多次应力蠕变和恢复、线性振幅扫描、车轮车辙测试仪和四点弯曲梁测试。在本研究中，温混聚合物改性粘合剂是通过同时使用聚合物改性剂，即苯乙烯丁二烯苯乙烯和温混改性剂，即zycotherm 来制备的。然后通过使用这些先进的测试，评估沥青粘合剂和混合料在不同应力水平和温度下的车辙和疲劳性能。在沥青粘合剂和混合性能之间建立了相关性。还评估了应力敏感性。使用这两种修改方法都没有显示出任何兼容性问题。发现使用温混聚合物改性粘合剂制备的混合物具有改进的性能以及较低的生产温度。沥青粘合剂和混合料的进一步性能评估测试发现彼此之间具有非常好的相关性。