道路用沥青的改性研究

On the performance of modified asphalt used in pavement construction

通过对道路沥青添加改性剂SBS和碳酸钙进行改性试验,研究了不同方法的改性效果,得到了改性沥青的最佳配合比。结果表明:两种改性剂同时加入到基质沥青中得到性能更好的改性沥青,改性沥青具有很强的相容性,改善了基质沥青的软化点、延度和针入度值,提高了改性沥青的路用性能。

Through the modified experiment of commixing the path asphalt with modifier SBS and the calcium carbonate, the modified effects are studied under different situation, and then the best mixture ratio is obtained. The result indicates that, by joining two kind of modifier simultaneously together into the matrix asphalt, the modified asphalt will have better compatibility, and improve the .softening point, the ductility and the penetration number of it, and then enhanced the performance of modified asphalt when used in pavement construction.