Freeze-thaw Durability of Recycled Aggregate Concrete:An Overview |
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Affiliation: | (Department of Civil Engineering,Nanjing University of Aeronautics and Astronautics,Nanjing 210016,China;College of Civil and Architecture,Guangxi University of Science and Technology,Liuzhou 545006,China;Jiangsu Huangjiang Construction Group Co.,Ltd.,Yangzhou 225200,China) |
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Abstract: | The characteristics of surface appearances,mass loss,relative dynamic modulus of elasticity and strength loss of different recycled aggregate concretes(RAC) exposed to freeze-thaw cycles were analyzed.It was found that the freeze-thaw resistance of RAC could be determined by the recycled aggregate compositions and admixtures.Both the saturation degree and the air void structure were the key factors influencing the freeze-thaw damage on concrete.Some major proposed freeze-thaw deterioration mechanisms were utilized to interpret the freeze-thaw damage on recycled aggregate concrete.Meanwhile,some potential measures to enhance the freeze-thaw resistance of concrete were summarized and discussed. |
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