摘要
在高寒冻融的环境下,公路桥梁只有具有更强的耐久性,才能最大程度地降低公路交通运输安全风险的威胁。通常情况下,可采取撒除冰盐的方式,从而使积雪冰点降低,以实现提升路面抗滑性的目的。但这种方式会使盐水和冻融对桥梁混凝土造成极大的破坏。与普通冻融破坏相比,这一方式带来的破坏要更加严重,因而对桥梁混凝土的耐久性要求更高。因此,通过高寒冻融环境下桥梁混凝土的现状分析,概述混凝土耐久性失效的原因,并提出增强桥梁混凝土耐久性的具体配合比设计。
Under the condition of Alpine freeze-thaw, highway bridges only have stronger durability, which can minimize the threat of highway traffic safety risk. Usually, we take the way of removing ice salt, thus reducing the snow ice point, in order to improve the skid resistance of the pavement.But this way will cause the brine and freeze-thaw to cause great damage to the bridge concrete. Compared with ordinary freezing and thawing damage, the damage caused by this method is more serious, thus the durability of bridge concrete is higher. This paper first analyzes the current situation of the bridge concrete in the freezing and thawing environment, then summarizes the reasons for the failure of concrete durability, and puts forward the concrete mix proportion design to enhance the durability of the bridge.
出处
《建筑技术开发》
2018年第12期15-16,共2页
Building Technology Development
关键词
高寒冻融
桥梁混凝土
耐久性设计
high cold and freezing thawing
bridge concrete
durability design
