Research on Mechanical Properties of FRP-Constrained Geopolymeric Recycled Concrete Mixed with Tailing Powder Under Axial Compression

MAO Zhijie; HUANG Liang; WU Yue; ZENG Linghong; DENG Peng; LI Yin

doi:10.13204/j.gyjzG22061601

Volume 53 Issue 6

Jun. 2023

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Article Navigation > INDUSTRIAL CONSTRUCTION > 2023 > 53(6): 209-217

MAO Zhijie, HUANG Liang, WU Yue, ZENG Linghong, DENG Peng, LI Yin. Research on Mechanical Properties of FRP-Constrained Geopolymeric Recycled Concrete Mixed with Tailing Powder Under Axial Compression[J]. INDUSTRIAL CONSTRUCTION, 2023, 53(6): 209-217. doi: 10.13204/j.gyjzG22061601

Citation:

MAO Zhijie, HUANG Liang, WU Yue, ZENG Linghong, DENG Peng, LI Yin. Research on Mechanical Properties of FRP-Constrained Geopolymeric Recycled Concrete Mixed with Tailing Powder Under Axial Compression[J]. INDUSTRIAL CONSTRUCTION, 2023, 53(6): 209-217. doi: 10.13204/j.gyjzG22061601

Citation:

MAO Zhijie, HUANG Liang, WU Yue, ZENG Linghong, DENG Peng, LI Yin. Research on Mechanical Properties of FRP-Constrained Geopolymeric Recycled Concrete Mixed with Tailing Powder Under Axial Compression[J]. INDUSTRIAL CONSTRUCTION, 2023, 53(6): 209-217. doi: 10.13204/j.gyjzG22061601

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Research on Mechanical Properties of FRP-Constrained Geopolymeric Recycled Concrete Mixed with Tailing Powder Under Axial Compression

doi: 10.13204/j.gyjzG22061601

MAO Zhijie^1,2,
HUANG Liang^{1
,
,},
WU Yue^1,3,
ZENG Linghong¹,
DENG Peng¹,
LI Yin¹

1. College of Civil Engineering, Hunan University, Changsha 410082, China;
2. Guangzhou Municipal Housing and Urban-Rural Construction Industry Monitoring and Research Center, Guangzhou 510000, China;
3. Huzhou Civil Air Defense Engineering Quality Supervision Station, Huzhou 313000, China

Received Date: 2022-06-16
Available Online: 2023-08-18

Abstract

Abstract

Aiming at the defects of low strength and ductility of recycled aggregate, low utilization rate of tailings and relative brittleness of geopolymer concrete, fiber reinforced polymer (FRP) was adopted to restraint concrete for enhancing the utilization rate of resources and ameliorating the mechanical properties such as strength and ductility. Therefore, taking the type of FRP, the number of FRP layers and the axial strength grade of core concrete as variables, a total of 42 specimens in 14 groups were designed to carry out axial compressive performance test research and theoretical model analysis of FRP-constrained geopolymeric recycled concrete mixed with tailing powder (FRP-GRC-TP) in the paper. The results showed that the FRP-GRC-TP composite structure significantly improved the strength and ductility of core concrete, and the more layers of FRP, the stronger the enhancement effect. In addition, the enhancement effect of FRP-constrained low-strength concrete was more obvious. The two suggested fitting strength models and one suggested fitting limit strain model proposed in the study had small errors between theoretical calculated values and experimental values, and showed a high prediction accuracy for the strength and ultimate strain of FRP-GRC-TP.
- FRP,
- geopolymeric recycled concrete,
- tailing powder,
- axial compressive performance,
- theoretical model

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References(22)

References

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