Research Progress on Recycled Aggregate Concrete Structural Components (II): Long-Term Service Performance

PENG Ligang; ZHAO Yuxi

doi:10.3724/j.gyjzG24042606

Volume 54 Issue 8

Aug. 2024

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PENG Ligang, ZHAO Yuxi. Research Progress on Recycled Aggregate Concrete Structural Components (II): Long-Term Service Performance[J]. INDUSTRIAL CONSTRUCTION, 2024, 54(8): 114-125. doi: 10.3724/j.gyjzG24042606

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PENG Ligang, ZHAO Yuxi. Research Progress on Recycled Aggregate Concrete Structural Components (II): Long-Term Service Performance[J]. INDUSTRIAL CONSTRUCTION, 2024, 54(8): 114-125. doi: 10.3724/j.gyjzG24042606

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Research Progress on Recycled Aggregate Concrete Structural Components (II): Long-Term Service Performance

doi: 10.3724/j.gyjzG24042606

PENG Ligang,
ZHAO Yuxi^,

Institute of Structural Engineering, Zhejiang University, Hangzhou 310058, China

Received Date: 2024-04-26
Available Online: 2024-09-19

Abstract

Abstract

In addition to the short-term mechanical performance of recycled aggregate concrete (RAC) structures, the stability and reliability of long-term service performance are also worthy of special attention, which is directly associated with the long-term safety and stability of such structures. This paper systematically reviewed the research progress in the steel corrosion within RAC, corrosion-induced cracking of RAC, the bonding strength between corroded steel bars and RAC, as well as the long-term service performance of RAC beam and column components. It also pointed out the shortcomings in current scientific research and standard-setting processes. The analysis results indicated that although the short-term mechanical performance of RAC structural components were comparable to those of natural aggregate concrete (NAC) structural components through optimized mix proportion design and construction methods, the long-term service performance of the former was significantly weakened, especially under service conditions of combined chloride attack and loading damage. Furthermore, the influence of recycled aggregate (RA) replacement ratio on the long-term service performance of RAC structural components cannot be ignored, and special considerations are needed in the durability design of such structures. Therefore, it is necessary to carry out follow-up research on the long-term service performance of RAC structural components. Through delving into the deterioration mechanisms underlying their long-term service performance, more abundant data support and theoretical references are provided for the standard revision and application promotion of RAC structures to achieve low-carbon and sustainable development in the construction industry.
- recycled aggregate concrete,
- structural components,
- long-term service performance,
- research progress,
- research prospect

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References(53)

References

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