水泥混凝土桥面铺装长效防水粘结体系MMA性能研究

发布时间：2018-10-22 13:00

【摘要】：在我国为数众多的水泥混凝土桥梁在远未达到设计寿命时,就出现了钢筋锈蚀、混凝土松散、结构强度下降、承载能力大幅衰减等病害现象。桥面铺装防水粘结体系的性能对桥面铺装的使用品质及对水泥混凝土桥梁结构的使用寿命具有显著影响。设置长效防水粘结层是确保桥面铺装结构耐久性的重大措施之一。以湖南省娄新高速公路水泥混凝土桥桥面铺装防水粘结层设置为实际研究背景,引用国外先进的水泥混凝土桥面铺装防水粘结体系设计方法及性能评价体系,对国外应用广泛且优良的长效甲基丙烯酸甲酯MMA防水粘结体系与我国普遍采用的SBS改性沥青碎石封层、改性乳化沥青等防水粘结材料防水进行了对比试验,为深入进行湖南省娄新高速公路水泥混凝土桥面铺装防水粘结体系研究及实际工程选择应用提供理论依据。
[Abstract]:When many cement concrete bridges in China are far from reaching the design life, there are many diseases such as corrosion of steel bar, loose concrete, decreasing of structural strength and large attenuation of bearing capacity. The performance of waterproofing and bonding system for deck pavement has a significant influence on the service quality of deck pavement and the service life of cement concrete bridge structure. It is one of the important measures to ensure the durability of bridge deck pavement structure to set long effect waterproof adhesive layer. Based on the setting of waterproof bond layer of cement concrete bridge deck pavement in Lou Xin Expressway of Hunan Province, this paper introduces the advanced design methods and performance evaluation system of cement concrete bridge deck pavement waterproof bond system abroad. A comparative test was carried out between the widely used and excellent long-acting methyl methacrylate (MMA) waterproof adhesive system abroad and the SBS modified asphalt macadam sealing layer and modified emulsified asphalt as waterproofing binder, which is widely used in our country. This paper provides a theoretical basis for the research of waterproofing and bond system of cement concrete deck pavement of Lou Xin Expressway in Hunan Province and the selection and application of practical engineering.
【作者单位】：湖南省娄新高速公路建设开发有限公司;
【分类号】：U443.33;U444

【参考文献】