维他温拌橡胶沥青混合料的性能及施工工艺分析

Analysis on Performance and Construction Technology of Vita Warm Mix Asphalt Rubber Mixture

维他温拌橡胶沥青属于干法工艺,主要通过维他连接剂将橡胶和沥青以化学方式进行改性,达到提高路用性能的目的。该文以元双公路工程为例,对维他温拌橡胶沥青混合料和维他热拌橡胶沥青混合料的性能进行对比分析,得出在抗高温性能、抗低温性能及抗疲劳性能方面两者相当,且维他温拌橡胶沥青混合料具有较优的抗水损害和抗老化性能;并对维他温拌橡胶沥青混合料的施工工艺进行分析,总结了其拌合、摊铺及碾压工艺。

The Vita warm mix rubber asphalt is a dry process technology, mainly using Vita coupling agent to modify the rubber and asphalt by the chemical process and to reach the aim of the high road performance. Taking Yuanshuang Highway Project as an example, the article compares and analyzes the performances of Vita warm mix rubber asphalt mixture and Vita hot warm mix rubber asphalt mixture, and gives the result that the high-temperature resistant performance, low-temperature resistant performance and fatigue resistant performance of these two mixtures are same, and Vita warm mix rubber asphalt mixture has the more excellent water-damage resistant and aging resistant performances. The article analyzes the construction technology of Vita warm mix rubber asphalt mixture, and sums up its mixing, paving and rolling technologies.