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为了评价温拌沥青混合料的高温稳定性,文章以热拌沥青混合料的配合比设计方法,掺加Sasobit降粘剂制备了AC-13温拌沥青混合料,进行了车辙试验,测定了温拌沥青混合料的动稳定度。结果表明:掺加3%Sasobit降粘剂后,动稳定度由SK70#基质沥青混合料的1 056次/mm提高到温拌沥青混合料的2 656次/mm,比较掺加SBS改性剂和掺加Sasobit降粘剂的沥青混合料的高温稳定性发现,Sasobit降粘剂对基质沥青的改性效果比对SBS改性剂效果明显。
In order to evaluate the high temperature stability of warm-mix asphalt mixture, the article mixes with hot asphalt mixture design method, mixed with Sasobit viscosity reducing agent prepared AC-13 warm mix asphalt mixture, the rutting test, measured the temperature Mixing asphalt mixture dynamic stability. The results show that after adding 3% Sasobit viscosity reducing agent, the dynamic stability is improved from 1 056 times / mm of SK70 # matrix asphalt mixture to 2 656 times / mm of warm mix asphalt mixture. Compared with SBS modifier And the high temperature stability of the asphalt mixture with Sasobit viscosity reducer found that Sasobit viscosity reducer modified asphalt matrix effect than SBS modifier effect is obvious.