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Study on Mechanical Properties of Concrete at Different Ages under Freeze-Thaw Cycles in Plateau

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DOI: 10.23977/jemm.2024.090106 | Downloads: 19 | Views: 213

Author(s)

Qi Zhao 1, Yamei Zang 1,2, Shixin Liang 3, Dongchen Guo 2

Affiliation(s)

1 College of Engineering, Tibet University, Lhasa 850000, Tibet, China
2 College of Civil Engineering, Southwest Jiaotong University, Chengdu 610031, Sichuan, China
3 Civil Aviation Engineering Quality Supervision Station, Chaoyang District 100000, Beijing, China

Corresponding Author

Yamei Zang

ABSTRACT

The purpose of this study is to explore the mechanical properties of concrete at different curing ages after freeze-thaw cycles in most areas of the plateau where freeze-thaw cycles exist. By comparing the compressive strength and splitting strength of concrete at different curing ages after different freeze-thaw cycles, the influence of curing age changes on the mechanical properties of concrete after freeze-thaw damage was analysed. The results show that the compressive strength and splitting strength of concrete can be significantly increased by increasing the curing days of concrete with the same number of freeze-thaw cycles, and sufficient curing age has a significant effect on reducing the influence of freeze-thaw cycles. Under the condition of the same curing days, with the increase of the number of freeze-thaw cycles, the compressive strength of concrete will first increase and strengthen at 50 cycles, and then start to weaken continuously. The splitting strength will continue to decrease with the increase of freeze-thaw cycles.

KEYWORDS

Different Maintenance Days, Freeze-thaw Cycle, Compressive Strength, Splitting Strength

CITE THIS PAPER

Qi Zhao, Yamei Zang, Shixin Liang, Dongchen Guo, Study on Mechanical Properties of Concrete at Different Ages under Freeze-Thaw Cycles in Plateau. Journal of Engineering Mechanics and Machinery (2024) Vol. 9: 33-39. DOI: http://dx.doi.org/10.23977/jemm.2024.090106.

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