论文部分内容阅读
自20世纪80年代以来,我国修筑了很多的水泥混凝土路面。但从20世纪90年代以来,沥青混凝土路面以表面平整无接缝、柔性好的特点较好地满足了行车要求。随着早期建成的水泥混凝土路面出现了不同程度的病害,逐渐不能满足交通运输服务的需求,因此,需对水泥混凝土路面进行大修改造。由于沥青加铺层能有效地改善旧水泥混凝土路面的使用性能。同时可以充分利用旧水泥路面造价低、施工方便、且对交通和环境影响小的优点,故在旧水泥混凝土路面上加罩沥青层,在国内外旧水泥混凝土路面改造工程中应用最多。
Since the 1980s, China has built a lot of cement concrete pavement. However, since the 90s of the 20th century, the asphalt concrete pavement meets the driving requirements well with its smooth surface without seams and good flexibility. With the early construction of cement concrete pavement appeared different degrees of disease, and gradually can not meet the needs of transport services, therefore, the need for cement concrete pavement overhaul. As the asphalt overlay can effectively improve the performance of the old cement concrete pavement. At the same time, it can take full advantage of the low cost of old cement pavement, easy construction, and little impact on traffic and environment. Therefore, the asphalt layer is added to the old cement concrete pavement, which is the most used in the reconstruction of old cement concrete pavement at home and abroad.