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寒冷地区旧水泥混凝土路面“白改黑”工程中反射裂缝是一个普遍存在并且难以解决的问题,通过大量的工程实践,对绥满高速公路哈牡段大修工程采用冲压打裂稳固和加铺应力吸收层技术。本文阐述了冲击打裂技术的作用机理,研究提出了冲击打裂技术的施工工艺流程;而后从原材料、配合比设计、施工工艺三个方面论述了应力吸收层的技术指标,为今后“白改黑”大修工程提供参考。
Reflective cracking in the old cement concrete pavement “white to black” project in cold area is a ubiquitous and difficult problem to be solved. Through a large number of engineering practice, the project of overhaul of Ha Mu section of Sui Man Expressway is stamped and stabilized Stress absorption layer technology. In this paper, the mechanism of the impact cracking technology is expounded, the construction process of the impact cracking technology is put forward, and the technical indicators of the stress absorption layer are discussed from three aspects: the raw material, the mix design and the construction technology, Change the black "overhaul project to provide a reference.