Creep property prediction of alkali-activated fly ash-slag concrete

HUANG Dun-wen; ZOU You-bao; DOU Shu-hao; XIA Li-peng; HE Jun; PENG Hui

doi:10.19818/j.cnki.1671-1637.2026.128

Volume 26 Issue 6

Jun. 2026

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Article Navigation > Journal of Traffic and Transportation Engineering > 2026 > 26(6): 115-122

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HUANG Dun-wen, ZOU You-bao, DOU Shu-hao, XIA Li-peng, HE Jun, PENG Hui. Creep property prediction of alkali-activated fly ash-slag concrete[J]. Journal of Traffic and Transportation Engineering, 2026, 26(6): 115-122. doi: 10.19818/j.cnki.1671-1637.2026.128

Citation:

HUANG Dun-wen, ZOU You-bao, DOU Shu-hao, XIA Li-peng, HE Jun, PENG Hui. Creep property prediction of alkali-activated fly ash-slag concrete[J]. Journal of Traffic and Transportation Engineering, 2026, 26(6): 115-122. doi: 10.19818/j.cnki.1671-1637.2026.128

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Creep property prediction of alkali-activated fly ash-slag concrete

doi: 10.19818/j.cnki.1671-1637.2026.128

HUANG Dun-wen^{1, 2
,
,},
ZOU You-bao¹,
DOU Shu-hao¹,
XIA Li-peng¹,
HE Jun^{1, 2},
PENG Hui^{1, 2}

1.
School of Civil and Environmental Engineering, Changsha University of Science and Technology, Changsha 410114, Hunan, China
2.
National-local Joint Engineering Laboratory of Technology for Long-term Performance Enhancement of Bridges in Southern District, Changsha University of Science and Technology, Changsha 410114, Hunan, China

Funds:

National Natural Science Foundation of China 52578162

National Natural Science Foundation of China 52008036

Hunan Provincial Natural Science Foundation 2026JJ40049

Hunan Provincial Natural Science Foundation 2024JJ5017

Distinguished Young Scholar Project of Hunan Provincial Education Department 22B0344

More Information

Corresponding author: HUANG Dun-wen, associate professor, PhD, E-mail: dw.huang@csust.edu.cn
Received Date: 2025-08-13
Accepted Date: 2025-11-27
Rev Recd Date: 2025-11-03
Publish Date: 2026-06-28

Abstract

Abstract

To discuss the creep prediction method for alkali-activated fly ash-slag concrete, creep tests on alkali-activated fly ash-slag concrete under varying stress-strength ratios, strength levels, and loading ages were carried out. The similarities and differences between alkali-activated concrete and cement concrete in the basic creep and drying creep were explored. Based on the existing creep data, a modified prediction method based on the creep model of the European Concrete Committee (CEB-FIP) was proposed. The results reveal that the critical point for linear creep in alkali-activated concrete occurs at a stress-strength ratio of 0.6-0.8. Additionally, the basic creep of alkali-activated concrete exceeds that of cement concrete with equivalent strength, while its drying creep develops more slowly during the early loading stage. The variation patterns of the creep coefficient with strength and loading age resemble those of cement concrete. The hyperbolic power function from the CEB-FIP creep model remains applicable for predicting the creep of alkali-activated concrete. According to the parameter analysis, the internal relative humidity term affecting the notional creep coefficient needs adjustment so as to match the higher basic creep of alkali-activated concrete. In addition, the coefficient describing the time development of creep should also be modified with respect to internal relative humidity. The established creep prediction model offers a viable approach for investigating the creep property of alkali-activated concrete structures.
- bridge engineering,
- alkali-activated concrete,
- creep test,
- prediction model,
- basic creep,
- drying creep,
- creep development

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References(32)

References

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Creep property prediction of alkali-activated fly ash-slag concrete

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