橡胶粉干法改性沥青混合料性能的影响因素研究

Study on Influence Factors of Properties of Dry Rubber Modified Asphalt Mixture

摘要: 沥青混合料是公路建设中最常见的路基路面改良措施，合适的改性工艺可有效提供沥青混合料的性能。本文采用橡胶粉干法开展了不同胶粉参量下的沥青混合料最佳油石比研究，并研究了不同胶粉参量下沥青混合料的高温性能、低温性能、水稳性能等路用性能试验研究。研究表明：增加胶粉细度可以提升胶粉改性效果，2%胶粉参量闷料60 min后的试件的改性效果可达到最佳。

Abstract: Asphalt mixture is one of the most common road surface improvement measures in highway con-struction, and suitable modification process can effectively provide the performance of asphalt mixture. This article applied the rubber powder dry process and studied the optimum proportion of asphalt mixture under different powder parameters, and experimented the performance of asphalt mixture with different powder content under high temperature, low temperature and water stability performance. The results show that the fineness of colloidal powder could improve the effect of adhesive powder, and the modification effect of 2% adhesive powder with 60-minute stuffy is the best material.