京沪高速铁路聚脲防水施工技术

Polyurea Waterproof Technology for Construction of Beijing-Shanghai High-speed Railway

聚脲是由半预聚体、端氨基聚醚、胺扩链剂等原料现场喷涂而成。它疏水性极强,对环境湿度不敏感,甚至可以在水(或者冰)上喷涂成膜,在极端恶劣的环境条件下可正常施工,表现特别突出。聚脲的出现,完全打破了传统的防腐和防护观念,为材料保护行业树立了一个更高的标准。聚脲涂层柔韧有余、刚性十足、色彩丰富,它致密、连续、无接缝,完全隔绝空气中水分和氧气的渗入,防腐和防护性能无与伦比。它同时具有耐磨、防水、抗冲击、抗疲劳、耐老化、耐高温、耐核辐射等多种功能,因此应用领域十分广泛。文中结合京沪高速铁路无砟轨道梁面防水层施工,详细介绍了采用聚脲防水层进行梁面防水层施工工艺和作业方法,聚脲施工所需的机械设备以及施工过程中需要检验的参数指标。

The polyurea as a field painting material is made from semiactive body, end-amino polyether, amiine chain extension agent, etc. such material has extremely strong hydrophobic performance, no sensitivity to the surrounding humidity, can form coating film even in water or ice and complete the construction normally in extremely bad environmental condition. The emergence of polyurea, completely broke the traditional corrosion and protection concept, for material protection industry set a higher standard. Polyurea coatings more flexible and rigid dye-in-the-wood, color is rich, it is dense, continuous, no joint, completely isolated from the air moisture and oxygen infiltration, corrosion and protection performance incomparable. It also has wear-resisting, waterproof, impact resistance, fatigue resistance, ageing resistance, high temperature resistant, resistant to nuclear radiation and other functions, so the application is very extensive. Combining with the jinghu high speed railway frantic jumble without track beam surface membrane construction, introduces in detail the polyurea tanking for beam surface membrane construction technology and operation method, polyurea required for the execution of the mechanical equipment and construction process need to test the parameters of the. For future similar project construction to provide the reference.