Groundwater Assessment And Experimental Study Of The Corrosion Of Concrete In Handan

At present, the corrosion evaluation of groundwater on concrete structures is mainly based on single factor, including decomposition type corrosion, crystal type corrosion and crystallization decomposition composite category corrosion. Many factors affect concrete corrosion, but the corrosion evaluation of multi-factor is not prevalent. In engineering practice it doesn't pay enough attention to geotechnical engineering environment problems on groundwater corrosion. So, systematic study the corrosion mechanism, evaluation method on groundwater to the basis of concrete, make the corrosion evaluation more scientific and more accurate, the antiseptic safer and more reasonable, it is major significance on improving durability infrastructure and extension of project life. This paper study the problem based on groundwater corrosive of Handan.Collect groundwater samples chemical composition data of recently Handan City, draw corrosion factor contour map, analysis corrosion reason, evaluate corrosion, and outline the corrosion. Evaluation studies show that groundwater corrosion of concrete mainly on SO42-corrosive weak category to the crystallization in HanDan, but while there are lots of local distribution of high-grade corrosion and other types of corrosion. Corrosion caused these distribution is the main cause that some enterprises in production engineering emissions SO42-and Cl-, and other bad elements affect groundwater chemical composition. It also found that the corrosion mechanism of groundwater complex ions is very complex, it is necessary to know mutual influence and restraint of corrosive ions. So, this paper made orthogonal corrosion test of multi-factor.The main purpose of corrosion test is to analyse strong corrosion combination of factors and boats relations which based on known media components, and easy access to all the factors on the concrete effects of corrosion. Two composite etched test results show that Cl- and Mg2+ are the strong corrosion factors; There are interactions between every corrosion factor. So, it should consider the relationship of each corrosion factor on evaluation of corrosion effect. This paper introduce and make protection measures of groundwater corrosion.