TY - JOUR
T1 - Research progress of the thermophysical and mechanical properties of concrete subjected to freeze-thaw cycles
AU - Zheng, Xinyu
AU - Wang, Yingrui
AU - Zhang, Shaoqi
AU - Xu, Fei
AU - Zhu, Xinping
AU - Jiang, Xi
AU - Zhou, Long
AU - Shen, Yi
AU - Chen, Qing
AU - Yan, Zhiguo
AU - Zhao, Weigang
AU - Zhu, Hehua
AU - Zhang, Yao
N1 - Funding Information:
The authors acknowledge the financial support from National Natural Science Foundation of China (52108379, 52078311), Natural Science Foundation of Hebei Province (E2021210002), Scientific Research Foundation for the Returned Overseas Scholars, Hebei Province (C20210307), Innovation Research Group Program of Natural Science, Hebei Province (E2021210099), and the China Postdoctoral Science Foundation (No.2019M663553).
Publisher Copyright:
© 2022
PY - 2022/5/2
Y1 - 2022/5/2
N2 - In cold regions, concrete structures such as pavements, bridges, and tunnels can undergo freeze-thaw conditions, which may significantly deteriorate the performance of concrete and further pose a threat to the structures’ safety and shorten their service life. This paper displays a comprehensive review of the effects of freeze-thaw cycles (FTCs) on the thermophysical and mechanical properties of concrete, which include the mass loss, specific heat capacity, thermal conductivity, coefficient of thermal expansion, compressive strength, splitting tensile strength, flexural strength, elastic modulus, and stress-strain relationship. Meanwhile, the influences of water/binder ratio, air content, number of FTCs, saturation degree, and multiple factors are analyzed and discussed in detail. In addition, changes in the microstructure and constituents, available theories, test methods, and damage identification/evaluation methods to characterize the freeze-thaw damage are summarized. Accordingly, recommendations are proposed for future investigations to be carried out. The discussion indicates that multiple factors and multiple fields should be comprehensively considered to reveal the micromechanism of the freezing and thawing damage on concrete in real complex environments. Also, existing freeze-thaw damage theories and test methods are supposed to be considered to develop the multiscale models and corresponding techniques.
AB - In cold regions, concrete structures such as pavements, bridges, and tunnels can undergo freeze-thaw conditions, which may significantly deteriorate the performance of concrete and further pose a threat to the structures’ safety and shorten their service life. This paper displays a comprehensive review of the effects of freeze-thaw cycles (FTCs) on the thermophysical and mechanical properties of concrete, which include the mass loss, specific heat capacity, thermal conductivity, coefficient of thermal expansion, compressive strength, splitting tensile strength, flexural strength, elastic modulus, and stress-strain relationship. Meanwhile, the influences of water/binder ratio, air content, number of FTCs, saturation degree, and multiple factors are analyzed and discussed in detail. In addition, changes in the microstructure and constituents, available theories, test methods, and damage identification/evaluation methods to characterize the freeze-thaw damage are summarized. Accordingly, recommendations are proposed for future investigations to be carried out. The discussion indicates that multiple factors and multiple fields should be comprehensively considered to reveal the micromechanism of the freezing and thawing damage on concrete in real complex environments. Also, existing freeze-thaw damage theories and test methods are supposed to be considered to develop the multiscale models and corresponding techniques.
KW - Concrete
KW - Freeze-thaw damage
KW - Multiple factors
KW - Thermophysical and mechanical properties
UR - http://www.scopus.com/inward/record.url?scp=85126904237&partnerID=8YFLogxK
U2 - 10.1016/j.conbuildmat.2022.127254
DO - 10.1016/j.conbuildmat.2022.127254
M3 - Review article
AN - SCOPUS:85126904237
SN - 0950-0618
VL - 330
JO - Construction and Building Materials
JF - Construction and Building Materials
M1 - 127254
ER -