Abstract
Keywords: concrete ;loading history ; sulfate attack ;damage ;mass change; ultrasonic velocity Abstract. The damage test of concrete with s ize of 100 mm * 100 mm * 300 mm under loading history and sulfate attack has been carried out to investigate concrete properties. Mass and ultrasonic velocity of 15 prismatic concrete which are immersed in 1% sodium-sulfate solution under different loading history are measured in the tests, respectively. Experimental results show that the mechanical properties of concrete after loading history are improved in the early stage under the effect of sulfate attack.Different loading history have a different influence on the damage process of concrete subject to sulfate attack.
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