The study on the effect of calcium chloride deicing agent and concrete compressive strength on scaling

Abstract

This experimental study investigated the durability degradation of concrete exposed to freezing and thawing and chlorideintrusion. In order to observe the degree of the degradation, 24 MPa, 35 MPa and 60 MPa concretes were used with 4% and12% calcium chloride solution as freezing water for scaling resistance and freeze - thaw resistance tests. The results show that24 MPa and 35 MPa concrete had a relatively large decrease in durability due to the freeze-thaw resistance and scalingresistance, but the 60 MPa concrete was not deteriorated significantly. In addition, when the concentration of the solution ofcalcium chloride was 4%, the degradation of durability was most remarkable. The results of this study suggest when concretestructures such as bridges or roads expose to the environmental conditions, appropriate measures such as increasing thedesigned standard strength of concrete need to be deliberated and additional studies should be conducted.