温拌SBS改性沥青制备及理化性质研究

Preparation of warm mix SBS modified asphalt and research on the influence of physico-chemical properties

研究了一种新型温拌剂对沥青的降黏效果及常规性能的影响。制备温拌SBS改性沥青条件为:搅拌转速200 r/min,搅拌时间30 min,温拌剂溶液pH为8,温拌剂浓度6%。结果显示,该温拌剂在一定程度上提高了沥青的软化点和针入度,延度变长,沥青的高低温性能均得到有效改善和提高。

The influence of a new kind of warm mix asphalt additive on viscosity and conventional proper ties of SBS modified asphalt were studied. The optimized conditions of preparation warm mix asphalt as follows ： stirring speed 200 r/rain, stirring time 30 rain ,the pH of warm mix agent solution is 8 and concen tration is 6%. The results showed that a certain degree the warm mix agent can improve the softening point and penetration, ductility variable16ngth, high and low temperature performance of asphalt have been effectively improve and enhance.