Warm-mix asphalt (WMA) technologies allow binder softening for compaction benefits. Lower production temperature also causes reduced short-term aging in WMA. Considering the long-term implication of the reduced aging and binder softening, WMA is being questioned about its rutting characteristics. As such, this study evaluates different WMA technologies for rutting characteristics in comparison to traditional hot-mix asphalt (HMA) through laboratory and field investigation. The study utilized the long-term pavement performance (LTPP) project in the state of New Mexico called Specific Pavement Study-10 (SPS-10), which was designed to evaluate the WMA performances. The LTPP SPS-10 section includes: (i) control HMA, (ii) foaming, (iii) Evotherm, (iv) Cecabase 1, and (v) Cecabase 2 mixtures. Cecabase 2 mixture consists of a polymer-modified binder (PG 70-28+), whereas other mixtures consist of PG 70-28 binder. The aggregate type, properties, and gradations are the same in all the sections. Laboratory evaluation of rutting was conducted through the Hamburg wheel tracking test. Long-term field rutting was evaluated through Mandli’s pavement profile scanner, a laser-based distress evaluation technology. The study found that WMA with foaming, Evotherm, or Cecabase shows slightly higher rutting compared with the control HMA; however, all the sections satisfied laboratory and field rutting criteria. The use of a polymer-modified binder in WMA significantly improves the rutting characteristics.

温拌沥青（WMA）技术可使粘结剂软化，从而具有压实优势。较低的生产温度还可以减少WMA的短期老化。考虑到减少老化和粘合剂软化的长期影响，人们对WMA的车辙特性提出了质疑。因此，本研究通过实验室和现场调查与传统的热拌沥青（HMA）相比，评估了不同WMA技术的车辙特性。该研究利用了新墨西哥州的长期路面性能（LTPP）项目，即“特殊路面研究10（SPS-10）”，该项目旨在评估WMA的性能。LTPP SPS-10部分包括：（i）对照HMA，（ii）发泡，（iii）蒸发，（iv）Cecabase 1，和（v）Cecabase 2混合物。Cecabase 2混合物由聚合物改性的粘合剂（PG 70-28 +）组成，而其他混合物则由PG 70-28粘合剂组成。在所有部分中，聚合类型，属性和渐变均相同。车辙的实验室评估是通过汉堡车轮跟踪测试进行的。长期野外车辙是通过Mandli的路面轮廓扫描仪（一种基于激光的遇险评估技术）进行评估的。研究发现，与对照HMA相比，带有泡沫，Evotherm或Cecabase的WMA的车辙略高。但是，所有部分均满足实验室和现场车辙标准。在WMA中使用聚合物改性的粘合剂可显着改善车辙特性。车辙的实验室评估是通过汉堡车轮跟踪测试进行的。长期野外车辙是通过Mandli的路面轮廓扫描仪（一种基于激光的遇险评估技术）进行评估的。研究发现，与对照HMA相比，带有泡沫，Evotherm或Cecabase的WMA的车辙略高。但是，所有部分均满足实验室和现场车辙标准。在WMA中使用聚合物改性的粘合剂可显着改善车辙特性。车辙的实验室评估是通过汉堡车轮跟踪测试进行的。长期野外车辙是通过Mandli的路面轮廓扫描仪（一种基于激光的遇险评估技术）进行评估的。研究发现，与对照HMA相比，带有泡沫，Evotherm或Cecabase的WMA的车辙略高。但是，所有部分均满足实验室和现场车辙标准。在WMA中使用聚合物改性的粘合剂可显着改善车辙特性。所有部分均满足实验室和现场车辙标准。在WMA中使用聚合物改性的粘合剂可显着改善车辙特性。所有部分均满足实验室和现场车辙标准。在WMA中使用聚合物改性的粘合剂可显着改善车辙特性。