特殊路段沥青路面抗滑性能修复技术工程应用

Engineering Application of Anti-skid Performance Repair Technology for Asphalt Pavement in Special Section

为改善长大纵坡、急转弯以及互通立交等特殊路段沥青路面的抗滑性能,提升行车安全性,以双组份环氧树脂胶砂为粘结材料,以单一粒径彩色陶瓷颗粒和玄武岩骨料为抗滑骨料的薄层结构抗滑修复技术进行工程应用验证,采用摆式摩擦仪和手工铺砂法,以摆值BPN与构造深度为指标评价了抗滑性能修复效果。检测结果表明,经环氧-陶瓷颗粒与环氧-玄武岩抗滑薄层修复后的沥青路面,其摆值BPN与构造深度增大明显,抗滑性能提升显著。基于工程验证,提出了薄层抗滑结构的施工工艺与应用于薄层抗滑结构的双组份环氧树脂黏结材料、彩色陶瓷与玄武岩颗粒抗滑骨料的技术要求。

In order to improve the skid resistance of asphalt pavement and traffic safety in special sections such as long longitudinal slope, sharp turns and interchanges, the engineering application of thin layer structure anti-slip repairing technology with two-component epoxy resin mortar as the bonding material, single particle size colored ceramic particles and basalt aggregate as the anti-slip aggregate was verified, and its anti-slip performance was evaluated by using pendulum friction apparatus and manual sanding method with pendulum BPN and construction depth as indicators. The results show that the pendulum BPN and the depth of structure increase obviously, and the anti-slip property of asphalt pavement increases obviously after the repair of epoxy-ceramic particles and epoxy-basalt anti-slip thin layer. Based on engineering application, the construction technology and material technical requirements of the thin-layer anti-slip structure are put forward.