刚柔复合式路面裂缝反射预防技术研究进展

为系统掌握国内外有关刚柔复合式路面裂缝反射预防技术的研究现状,通过调查现有层间裂缝防治材料的设计思路、性能试验、应用效果,评述针对旧水泥混凝土路面加铺层裂缝反射预防材料的优缺点,总结现有裂缝反射预防技术存在的问题及发展趋势。结果表明:国内外全幅式、条带式裂缝预防技术已经应用颇多,取得了一定的效果,但关于裂缝反射预防材料的技术规范相对缺乏,条带式-复合型裂缝预防措施将在未来道路工程中常态化应用。现浇、条带式应力吸收带在抗拉性能、经济方面效果较好,可在未来旧水泥混凝土路面加铺沥青层时参考应用。

Review of Crack-reflection Preventive Technologies for Rigid-Flexible Composite Pavement

In order to master the research status about crack-reflection preventive technologies for rigid-flexible composite pavement at home and abroad comprehensively, design ideas, performance tests, and application effects of technologies for rigid-flexible composite pavement are investigated firstly, and then advantages and disadvantages of materials for layer of reflection crack prevention measures on the old cement concrete pavement are reviewed, and lastly, existing problems and development trend of crack-reflection preventive technologies are summarized. Results show that the full with type, strip type technologies for layer of reflection crack prevention measures at home and abroad has been applied, which are effective. However, the technical specification of crack-reflection preventive materials is not reported. In the future, strip and compound type crack preventive measures will be normalized in the road enginee-ring. Materials shaped in cast-in-place, strip type stress absorption owed better tensile properties and economic effect, it could be applied as a reference used to prevent crack-reflection for rigid-flexible composite pavement in the future.