热再生沥青混合料长期水稳定性分析

通过老化前后混合料浸水马歇尔试验和冻融劈裂试验,研究了再生剂、RAP比例和老化对再生沥青混合料水稳定性的影响,结果表明：掺加再生剂能显著提高混合料的水稳定性;RAP含量低于50%时,再生沥青混合料的水稳定性受影响较小,而RAP含量较大时,水稳性能显著下降;老化后再生沥青混合料的总体性能相当,能满足使用要求。

Analysis of long-time water stability of thermal regeneration asphalt mixture

According to immersion Marshal test and freeze-thaw splitting test for the mixture before and after getting older,the paper researches the recycling agent,the ratio for RAP,and the age s influence of regeneration mixture s water stability.It is concluded that the mixture of regenerating agent can affect the water stability of the mixture greatly,and the influence turns to be smaller,when the RAP is less than 50 percent,while the performance of the water stability will be lower when there are more RAP,and the general performance of the asphalt mixture can be good enough to meet the demands of being used after aging.