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随着我国建筑业的飞速发展,建筑物所处的环境也在发生变化,如沿海区域的开发、盐湖资源的利用,盐碱地上的建设以及工业污染区等,可能使建筑物受到这些特殊环境的腐蚀破坏。目前,我国建筑物仍然以钢筋混凝土结构为主,地下腐蚀问题较突出。一、腐蚀机理及影响因素1、混凝土的腐蚀处于地下混凝土的腐蚀,以化学作用为主,其腐蚀速度取决于有害离子的浓度、种类及土壤或水的酸度等因素,也取决于混凝土的密实性、厚度及水泥水化物的物理性质
With the rapid development of China’s construction industry, the environment of buildings is also changing. For example, the development of coastal areas, the utilization of salt lakes, the construction of saline-alkali land and industrial pollution areas may cause buildings to be exposed to these special environments Corrosion damage. At present, China’s buildings are still dominated by reinforced concrete structures, underground corrosion problems are more prominent. First, the corrosion mechanism and influencing factors 1, the corrosion of concrete in underground concrete corrosion, the main chemical, the corrosion rate depends on the concentration of harmful ions, species and soil or water acidity and other factors, but also depends on the density of concrete Sex, thickness and physical properties of cement hydrates