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《Ready-Mixed Concrete》 2015-07
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Study on mechanical properties of different strength grade concrete under sulfate attack

Li Juan;Zhang Shuxiong;Zhang Haijiao;Wang Dongmin;China University of Mining &Technology;  
The concrete samples were prepared from C20 to C60, drying-wetting cycle was used to accelerate the rate of sulfate attack, compressive strength of each sample was tested. The results showed that, compared to the same age of water curing specimens, the strength of the drying-wetting cycle specimens increased 4%~10% within 30 days. After 30 days, with the age increased, strength began to decrease. In 120 days, C20 decreased 16.3%, C30 decreased 23.1% and C40 decreased 18.9%, C50 and C60 decreased about 7%. The higher strength grade of concrete is, the better the performance of concrete in sulphate erosion.
【CateGory Index】: TU528
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