Uniaxial tension properties and stress-strain relation of steel fiber reinforced concrete subjected to salt and freeze-thaw cycles

被引：0

作者：

Zhang, Yakun ^{[1
,2
]}

Zhu, Haitang ^{[3
]}

机构：

[1] School of Water Conservancy and Transportation, Zhengzhou University, Zhengzhou

[2] Yellow River Conservancy Technical University, Kaifeng

[3] School of Civil Engineering, Henan University of Engineering, Zhengzhou

来源：

Construction and Building Materials | 2025年 / 489卷

基金：

中国国家自然科学基金;

关键词：

Freeze-thaw cycles; Mass loss; Relative dynamic modulus of elasticity; Steel fiber reinforced concrete; Strength loss; Stress-strain relation curve; Uniaxial tension;

D O I：

10.1016/j.conbuildmat.2025.142396

中图分类号：

学科分类号：

摘要：

This paper presents an experimental study on the mass loss, relative dynamic modulus of elasticity, uniaxial tensile strength, and stress-strain curves for steel fiber reinforced concrete subjected to different freeze-thaw cycles in a 5 % NaCl solution. One hundred and eighty dogbone-shaped specimens with dimensions of 100 mm × 100 mm × 400 mm and one hundred and thirty-five cubic specimens with dimensions of 100 mm × 100 mm × 100 mm were cast and tested. Test results show that as the number of chloride salt freeze-thaw (F-T) cycles increases, the mass loss of steel fiber reinforced concrete decreases first and then increases; the relative dynamic modulus of elasticity of specimens continuously decreases, and the rate of decrease of steel fiber reinforced concrete specimens is lower than that of ordinary concrete under the same conditions; the axial tensile peak strength of steel fiber reinforced concrete specimens decreases continuously, while the peak strain increases continuously, and both can be accurately expressed by the quadratic function of the freeze-thaw cycles (N). 1.0 % has been determined as the optimal volume fraction for steel fiber reinforced concrete subjected to the chloride freeze-thaw environment. The stress-strain curve of steel fiber reinforced concrete specimen first ascends rapidly and then descends suddenly after exceeding the peak strength, and then turns into a slow and stable deformation development process. Theoretic stress-strain curve of steel fiber reinforced concrete after chloride salt freeze-thaw cycles is proposed and is in good agreement with the experimental results. © 2025 Elsevier Ltd

引用

共 48 条

[1]

Wu C., Zhang H., Wang D., Et al., Study on mechanical and chloride salt freezing-thawing resistance of CSW concrete, Constr. Build. Mater., 447, (2024)

[2]

Guan J., Wang K., Application status and development strategies of cement concrete materials for marine engineering, Jiangsu Build. Mater., 4, (2015)

[3]

Li Y., Guan Z., Wang P., Recent development on mechanical properties of concrete corrosion in marine environment, J. Wuhan. Univ. Technol., 37, 3, pp. 83-89, (2015)

[4]

Yu H.

[5]

Ma Z., Corrosion resistance analysis of underground concrete structures in Salt Lake brine environment, Build. Struct., 51, 9, (2021)

[6]

Wang B., Wang F., Wang Q., Damage constitutive models of concrete under the coupling action of freeze-thaw cycles and load based on Lemaitre assumption, Constr. Build. Mater., 173, pp. 332-341, (2018)

[7]

Yi Y., Zhu D., Guo S., Et al., A review on the deterioration and approaches to enhance the durability of concrete in the marine environment, Cem. Concr. Compos., 113, (2020)

[8]

Qu F., Li W., Dong W., Et al., Durability deterioration of concrete under marine environment from material to structure: a critical review, J. Build. Eng., 35, (2021)

[9]

Zheng X., Wang Y., Zhang S., Et al., Research progress of the thermophysical and mechanical properties of concrete subjected to freeze-thaw cycles, Constr. Build. Mater., 330, (2022)

[10]

Wang R., Hu Z., Li Y., Et al., Review on the deterioration and approaches to enhance the durability of concrete in the freeze-thaw environment, Constr. Build. Mater., 321, (2022)

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