【摘要】 传统SMA路面施工采用双钢轮振动压路机碾压,通常不使用胶轮压路机,以避免胶轮碾压将沥青玛蹄脂胶浆挤出来。通过改进SMA的碾压方法,从提高SMA路面压实度、改善SMA路面防水性能的角度,创新性地提出采用大吨位胶轮压路机合理配合双钢轮压路机碾压SMA,并成功应用于湖南省某高速公路沥青混凝土路面的施工,取得了较好的效果。通过试验路检测结果显示:始终控制胶轮压路机在混合料表面温度为60~90℃时进行复压,可以有效避免产生油斑;该新工艺可以提高SMA路面压实度0.8%,减少集料被压碎现象;同时,新工艺还可以节约16.7%的压实设备费用,在低温环境下也可以实施,缩短路面施工工期,具有显著的经济和社会效益。更多还原

【Abstract】 Traditional SMA pavement construction usually adopts double roller compaction,instead of tire roller in order to avoid asphalt mastic glue to be squeezed out by tire roller.Through improving the SMA rolling method,this paper innovatively puts forward the way of rolling SMA by large-tonnage roller working with double steel roller coordinately from the angle of the improvement of SMA pavement compaction and the SMA pavement waterproof performance,and it has been successfully applied to the asphalt roadbed construction of an expressway in Hunan Province which has obtained good results.Through road test,the results show that:a throughout control of lugs compacting on mixture surface with temperature of 60~90℃ can effectively prevent stains;the new technology can enhance the SMA pavement compaction degree by 0.8%,and can reduce crushed aggregate;and in the meantime,the new process can save 16.7% of compaction equipment cost,work in low temperature environment and shorten the road construction duration,therefore it has significant economic and social benefits.更多还原