Dilation Ratio and Modeling of Recycled Aggregate Concrete

ZHAO Muzi; XU Chengyan; WANG Yuyin; GENG Yue; GONG Chao

doi:10.13204/j.gyjzG23051513

Volume 53 Issue 10

Oct. 2023

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ZHAO Muzi, XU Chengyan, WANG Yuyin, GENG Yue, GONG Chao. Dilation Ratio and Modeling of Recycled Aggregate Concrete[J]. INDUSTRIAL CONSTRUCTION, 2023, 53(10): 143-150,82. doi: 10.13204/j.gyjzG23051513

Citation:

ZHAO Muzi, XU Chengyan, WANG Yuyin, GENG Yue, GONG Chao. Dilation Ratio and Modeling of Recycled Aggregate Concrete[J]. INDUSTRIAL CONSTRUCTION, 2023, 53(10): 143-150,82. doi: 10.13204/j.gyjzG23051513

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Dilation Ratio and Modeling of Recycled Aggregate Concrete

doi: 10.13204/j.gyjzG23051513

ZHAO Muzi^1,2,
XU Chengyan¹,
WANG Yuyin^{3,4
,
,},
GENG Yue^3,4,5,
GONG Chao²

1. School of Materials Science and Engineering, Harbin Institute of Technology (Shenzhen), Shenzhen 518055, China;
2. Central Research Institute of Building and Construction (Shenzhen) Co., Ltd., MCC Group, Shenzhen 518055, China;
3. Key Lab of Structures Dynamic Behavior and Control of the Ministry of Education, Harbin Institute of Technology, Harbin 150090, China;
4. School of Civil Engineering, Harbin Institute of Technology, Harbin 150090, China;
5. Guangdong Provincial Key Laboratory of Modern Civil Engineering Technology, Guangzhou 510641, China

Received Date: 2023-05-15
Available Online: 2023-12-18

Abstract

Abstract

To investigate the influence of recycled aggregate incorporation on the dilation behavior of concrete, the paper conducted the compressive tests for 14 groups of 150 mm×150 mm×300 mm prisms (totally 42 specimens) with different coarse recycled aggregate (CRA) and fine recycled aggregate (FRA) replacement ratios and water-cement ratios (w/c), and then quantified the influence of recycled aggregate (RA) replacement ratio on the dilation ratio of concrete with different w/c. Based on two-phase composite material theory, a new dilation ratio prediction model for RAC was proposed, which could consider the difference of replacement ratio influence with different w/c. The proposed model was benchmarked against the available test data. It was found that the CRA and FRA had a significant compounding effect on dilation ratio, which could be amplified by the increasing w/c ratio;the mean value and coefficient of variation (COV) for the ratio of predictions by proposed model to the available test results were 1.000 and 0.250, respectively.
- fine recycled aggregate,
- coarse recycled aggregate,
- dilation ratio,
- water-cement ratio,
- two-phase composite material theory

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References(26)

References

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