The Durability Studies And Life Prediction Of Field Exposure Concrete In Xi’an

As the typical western city, xi’an is one of western saline soil area. In this region.it always sunny. The radiation intensity is high, morning and night temperature difference, relative humidity is higher. In the area of concrete under severe salt erosion, environmental impact, alternating wet and dry environment function and freeze-thaw cycle exist serious problems of concrete durability.So far, the concrete durability life prediction is more focused on the chloride ion corrosion, and the influence of carbonization corrosion, Based on the durability of sulfate erosion life prediction results are very few.And against sulphate saline soil in xi’an region is studied less. Barely see in xi’an region based on the sulfate corrosion of concrete durability life prediction research. This article through to fast, laboratory test and field exposure test contrast, research in xi’an region field exposure and life prediction of concrete durability. Analysis of xi’an region field exposed concrete test data, and comparing with laboratory test data. Seek to relatively objective evaluation parameters of concrete damage degree evaluation of xi’an area, and then to estimate the service life of concrete in xi’an region. The following concludions may be drawn with the limitation of the research in this paper:The first, design test plan:In view of the region characteristics of xi’an area, such as temperature, weather and humidity, etc. To simulate the concrete practical engineering field environment and design rapid testing scheme indoor.The second, select the durability evaluation parameters:Combining with the actual situation of xi’an region, select the block relative quality evaluation parameters and relative dynamic elastic modulus of evaluation parameters for performance analysis of the concrete.The third, the results of the field exposure test data and analysis:Using the relative quality evaluation parameters and the relative dynamic elastic modulus of evaluation of results after data processing to analyze through720days of field exposure test of concrete performance.The last, the life prediction of durability:Until now, according to the current domestic and foreign research on concrete durability and life prediction method, and combining with the particularity of this experiment, to ensure life prediction of concrete parameters and methods.