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钢筋混凝土桥梁易遭受渗透雨水的侵蚀,严重降低了桥梁的使用寿命。在桥面上设置防水层被世界范围内公认为是提高桥梁耐久性最有效的措施。国内铁路桥梁混凝土桥面防水走过了采用沥青防水层、弃用沥青类防水材料到再次启用高聚物改性沥青防水的过程,这反映出铁路行业对混凝土桥梁防水新的认知。本文分析铁路桥梁工程防水,探讨了RWB一801铁路桥面专用高聚物改性沥青卷材及其防水系统。
Reinforced concrete bridges are vulnerable to the erosion of infiltration of rainwater, seriously reducing the service life of the bridge. Setting a waterproofing layer on the deck is recognized worldwide as the most effective measure to improve bridge durability. The domestic railway bridges concrete bridge deck waterproofing through the use of bitumen waterproofing layer, abandoned asphalt waterproofing material to reactivate the polymer modified bitumen waterproofing process, which reflects the railroad industry new understanding of the concrete bridge waterproofing. This article analyzes the waterproofing of railway bridge engineering and discusses the special polymer modified asphalt membrane and waterproofing system of RWB-801 railway bridge deck.