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This study presents systematic static uniaxial compression experimental investigations on concrete with four moisture contents (0.0 %, 3.3 %, 5.0 %, and 6.2 %) at various temperatures (20 °C, −30 °C, −60 °C, and −90 °C). The coupling effects of cryogenic temperature and moisture content on compression performances of concrete were quantitatively analyzed, in terms of stress-strain curves, compressive strength, elastic modulus and peak strain. The mechanisms behind low-temperature enhancement and ice formation were deeply discussed. The results indicate that as the temperature decreases from 20 °C to −90 °C, the increases in compressive strength, elastic modulus, and peak strain of saturated concrete are greater than those of dry concrete. The contribution of ice formation in the pore structure increases first and then decreases with decreasing temperature, reaching a peak of 54.5 % at −60 °C. At cryogenic temperatures, with the increase of moisture content, the compressive strength shows a trend of first increasing and then decreasing, reaching its maximum value at the moisture content of 3.3 %. Finally, the theoretical prediction models for compressive strength and elastic modulus considering the coupling effects of moisture content and cryogenic temperature were established, which can effectively predict the compressive strengths and elastic modulus at cryogenic temperatures with different moisture contents. This study can provide a reference for the performance evaluation and large-scale engineering application of concrete in low-temperature environments. © 2025 Elsevier Ltd
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Journal of Building Engineering
Year: 2025
Volume: 100
6 . 4 0 0
JCR@2022
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ESI Highly Cited Papers on the List: 0 Unfold All
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30 Days PV: 10
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