Cold central plant recycling (CCPR) of asphalt mixtures continues to grow in interest among agencies and asphalt mixture suppliers. However, one implementation challenge has been the need to invest in new equipment to produce the mixture. In 2015, the National Center for Asphalt Technology (NCAT) worked with a local contractor to produce a CCPR mixture through a standard hot-mix asphalt (HMA) plant. The mix was then placed in a test section on the NCAT Pavement Test Track with a highly modified dense graded HMA overlay. The process used to produce the mixture in the HMA plant is outlined along with the performance of the mixture after heavy truck loading in comparison with a control section with a highly modified dense graded hot-mix asphalt in lieu of CCPR. After 17 million equivalent single axle loads the test section containing the CCPR mixture is performing as well as the control section. This shows that CCPR can be successfully produced using an HMA plant, which may encourage mix suppliers and agencies to conduct trial projects with CCPR, implement CCPR into standard practice, and further justify new CCPR equipment investments.

机构和沥青混合料供应商对沥青混合料的冷中央工厂回收 (CCPR) 越来越感兴趣。然而，一个实施挑战是需要投资新设备来生产混合物。2015 年，国家沥青技术中心 (NCAT) 与当地承包商合作，通过标准的热拌沥青 (HMA) 工厂生产 CCPR 混合物。然后将混合物放置在 NCAT 路面测试轨道上的测试部分，并带有高度修改的密集分级 HMA 覆盖层。与使用高度改性的稠密级配热拌沥青代替 CCPR 的控制部分相比，在 HMA 工厂中用于生产混合物的过程以及重型卡车装载后混合物的性能进行了概述。在 1700 万当量单轴载荷后，包含 CCPR 混合物的测试部分的性能与控制部分一样。这表明使用 HMA 工厂可以成功生产 CCPR，这可能会鼓励混合供应商和机构与 CCPR 进行试验项目，将 CCPR 实施为标准实践，并进一步证明新的 CCPR 设备投资的合理性。