Improving the Fatigue Properties of Flexible Pavement with Polymer Modified Asphalt (PMA)****

疲劳是加拿大柔性路面劣化的主要形式之一。聚合物改性沥青水泥（PMA）的使用可以提高路面沥青混合料的耐久性，延长其使用寿命。该项目是Yellowline和滑铁卢大学路面和交通技术中心的合作项目。双方将密切合作，评估几种具有不同聚合物类型和含量、不同交联剂和集成技术的PMA配方的粘结剂和混合物性能。在这项研究中，将使用不同的标准和创新的测试方法，以开发一个工具包，帮助Yellowline制定最有效的pma，并根据粘合剂和混合物的特性预测疲劳性能。结果将有助于优化PMA配方，并提供基本的科学见解，可用于改善PMA的实践

Fatigue is one of the major modes of deterioration of flexible pavements in Canada. The use of polymer-modified asphalt cements (PMA) would improve the durability of asphalt mixes using in pavements and extend their service life. This project is a collaboration between Yellowline and the Centre for Pavement and Transportation Technology at the University of Waterloo. The two partners will work closely to evaluate the binder and mixture performance of several PMA formulations with varied polymer types and contents, different cross linking agents and integration techniques. Different standard and innovative test methods will be used in this study in order to develop a tool kit that will help Yellowline formulate the most effective PMAs and predict the fatigue performance based on the binder and the mix properties. The results will help optimising the PMA formulations as will provide a fundamental scientific insight that can be used to improve PMA practice in general.**