Research On The Durability Of Foundation Concrete Under Water And Soil Environment In Zhengzhou

With the vigorous development of urban architecture in the 21 st century,the use of concrete in urban underground space structures with diverse environments has become more and more extensive.In particular,the characteristics of the difference and complexity of the groundwater and soil environment have made the foundation concrete of the building during its service period.The erosion effect of corrosive factors in the groundwater and soil environment presents obvious uncertainty.This erosion is also long-term and complex,and further causes the deterioration of concrete structure performance and the reduction of structural durability.Starting from the actual project,this paper,based on the status quo of the groundwater and soil environment in Zhengzhou City,carries out a research on the durability of foundation concrete.The main research contents include:1 Based on the engineering geological survey report data of the projects that have been built or under construction in the main urban areas of Zhengzhou City,the current situation of the concrete structure durability environment in Zhengzhou City has been analyzed through field research,and the statistical data of the Zhengzhou City Environmental Statistics Annual Report and the sorts of data from several aspects of the city’s atmospheric temperature,ground hydrological conditions,and soil environment,the distribution characteristics of the corrosive factors in the groundwater and soil environments in the main urban areas of Zhengzhou are summarized,and the distribution of the corrosive factors is evaluated and divided.2 Based on the distribution of various corrosive factors in the groundwater and soil environment,draw contour maps and three-dimensional maps of corrosive factors,analyze and give the distribution law of corrosive factors in the groundwater and soil environment in various jurisdictions of Zhengzhou City,which can quickly locate the impact the area of structural durability.The research shows that the groundwater and soil environment in the main urban area of Zhengzhou is slightly corrosive to the basic concrete structure,and some areas are weakly corrosive;the main corrosive factors in the groundwater and soil environment in the weakly corrosive areas are sulfate ions and chloride ions,and research its corrosive effect on concrete structures.3 Carry out the research on the corrosion degradation mechanism and durability life prediction of the foundation concrete in the groundwater and soil environment in Zhengzhou.Based on engineering examples and theoretical analysis,the concept of macro-durability of the foundation concrete is proposed,and countermeasures for the durability control of the foundation concrete in the groundwater and soil environment are proposed.The engineering design and construction of Zhengzhou City provide early-stage durability design countermeasures and reference basis.