Antifreeze Durability Of Loaded Concrete Studies

The deterioration of concrete in the actual project is usually the result of coupling multiple disruptive factor, based on the role of a single factor is difficult to accurately analyze the reaction engineering practice problems of concrete durability. Therefore, establish the coupling of multiple factors-stress state test methods to simulate the real environment, do the degradation of the performance of concrete under multi-factors coupling failure mechanism and protective measures study has a very important significance.The main topic of research of the paper is about with the durability of concrete with load and freeze-thaw cycle coupling. Test the deterioration process of the concrete with load and freeze-thaw cycle coupling. Analysis side by side to build mathematical models based on damage failure process. The process is as follows:1. In the study of the rapid freeze-thaw cycle conditions of Antifreeze durability of loaded concrete. Author plus0,30%,60%of the ultimate compressive strength of concrete specimen load rapid freeze-thaw cycle test, and found the internal damage of the unloaded specimen under the load rapid freeze-thaw cycle conditions than the ones under the generally rapid freeze-thaw cycle conditions is smaller.2. In the study of the exposure conditions of Antifreeze durability of loaded concrete. Author plus0,30%,60%of the ultimate compressive strength of concrete specimen load exposure test.The results showed that:exposed concrete under the test,under the same time,the loading force bigger the more beneficial to the growth of compressive strength, but, at the same time in a certain range of classes the more unfavorable to its growth in the tensile strength.3. When testing the Dynamic modulus of elasticity of pressure concrete under exposure conditions, Author proposed the concept of water loss rate and relative dynamic elastic modulus to test concrete test value, the rate of water loss and temperature for an unknown amount of the ternary function correction equation and in general rapid freeze-thaw cycle test concrete specimens under load relative dynamic modulus of elasticity of the repair formula.4. In Harbin reference, Identify exposed to the outdoors concrete structure of our cold northern areas altogether experienced freeze-thaw cycles.