Freeze-thaw Durability of Recycled Aggregate Concrete: An Overview
Haoxiang Luan , Jin Wu , Jiayu Pan
Journal of Wuhan University of Technology Materials Science Edition ›› 2021, Vol. 36 ›› Issue (1) : 58 -69.
Freeze-thaw Durability of Recycled Aggregate Concrete: An Overview
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.
recycled aggregate concrete / freeze-thaw durability / aggregate composition / deterioration mechanism / improvement measures
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