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近年来,为满足公路运输的需要,我国在重交通、大交通量的路段上,大力发展水泥混凝土路面。到1997年底,全国水泥混凝土路面里程已达68740km。由于80年代初期修建的水泥路面设计标准偏低、板块偏薄,有的路段出现了不同程度的损块,已不能适应重交通运输的需要。为适应国民经济发展的需要,在水泥混凝土路面上加铺沥青混凝土面层,可提高水泥路面的使用功能,改善路面的平整度,但如何防止反射裂缝的发生,是道路工程中遇到的一个新课题。
In recent years, in order to meet the needs of road transport, our country vigorously develops the cement concrete pavement on heavy traffic and large traffic sections. By the end of 1997, the national cement concrete road mileage had reached 68,740km. Due to the low standard of design of cement pavement constructed in the early 1980s and the thin slab, different sections of the block appeared in some sections and could no longer meet the needs of heavy traffic. In order to meet the needs of the national economy, laying asphalt concrete pavement on the cement concrete pavement can improve the function of the cement pavement and improve the smoothness of the pavement, but how to prevent the reflection cracking is one of the problems encountered in road engineering New topic