Influence of CO2⁃enhanced Recycled Coarse Aggregate on Durability of Concrete

Zijian Liu

doi:10.54097/hafyj450

Authors

Zijian Liu

DOI:

https://doi.org/10.54097/hafyj450

Keywords:

CO2⁃enhanced; Durability; Recycled Coarse Aggregate.

Abstract

Recycling discarded concrete into recycled aggregates is a very environmentally friendly construction waste disposal method. However, recycled aggregates have performance defects such as low strength and high permeability. The use of carbon dioxide (CO₂) mineralization to regenerate aggregates can effectively solve this problem, while also effectively sequestering carbon. However, the durability of concrete made using CO₂ mineralized recycled aggregates instead of natural aggregates still needs further research. This article summarizes and analyzes the current research on the durability of CO₂ enhanced recycled aggregate concrete, and finds that most of the current research focuses on its chloride ion permeability, while research on its carbonation durability is extremely rare. Therefore, this article analyzes the adverse factors of CO₂ mineralized recycled aggregate concrete in terms of carbonation durability and provides suggestions for further research.

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