乳化沥青冷再生混合料物理参数及高低温性能试验研究

Experimental Study on Physical Parameters and High/Low-temperature Performances of Emulsified Asphalt Cold-recycling Mixture

沥青路面冷再生技术将废旧沥青混合料作为原材料,加入乳化沥青、水泥及外加剂,拌合成新的混合料用于铺筑路面,可节约材料、降低造价、节能环保。现采用不同乳化剂类型的乳化沥青作为结合料,在不同乳化沥青用量和水泥用量条件下,进行冷再生沥青混合料物理参数及高、低温性能的试验研究,分析乳化剂类型、乳化沥青用量和水泥用量对混合料高、低温性能的影响。通过试验研究,得到了满足混合料性能规范要求的最佳乳化沥青用量和水泥用量。研究结果对冷再生沥青混合料的工程应用提供理论依据。

The asphalt pavement cold-recycling technology is to use the waste asphalt mixture as the raw material and add the emulsified asphalt, cement and admixture to mix the new mixture for paving the pavement, which can save the materials, reduce the cost, save the energy and protect the environment. By using the different emulgator types of emulsified asphalt as the binder material, the physical parameters,high and low temperature performances of cold-recycling asphalt mixture are tested and studied under the conditions of different emulsified asphalt amounts and cement contents to analyze the influences of emulgator type, emulsified asphalt amount and cement contents on the high and low temperature performances of mixture. Through the experimental study, the best emulsified asphalt amount and cement content to meet the requirements of mixture performance specifications is obtained. The study result can provide the theoretical basis for the engineering application of cold-recycling asphalt mixture.