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本文针对白加黑路面结构的最大问题——如何减缓由旧水泥板引起的反射裂缝的产生,结合哈阿高速公路大修工程的应用实践,从设计原理与施工工艺方面详细探讨了旧水泥面板打裂压稳技术和热拌抗裂应力吸收层综合处治技术的应用,经验与实践表明,这种综合处治方案可以有效延缓反射裂缝的产生,并减少路面水损害,从而延长白加黑结构路面的使用寿命。
In this paper, aiming at the biggest problem of white plus black pavement structure, how to mitigate the generation of reflection cracks caused by the old concrete slab, and combining with the application practice of the overhaul project of Ha’Ai Expressway, the paper discusses in detail the design principle and construction technology, Cracking and compression technology and thermal shock cracking stress absorption layer comprehensive treatment technology, experience and practice show that this comprehensive treatment program can effectively delay the generation of reflective cracks, and reduce water damage on the pavement, thereby extending the white plus black structure of the pavement Service life.