Research progress of the thermophysical and mechanical properties of concrete subjected to freeze-thaw cycles

Zheng, Xinyu; Wang, Yingrui; Zhang, Shaoqi; Xu, Fei; Zhu, Xingyi; Jiang, Xi; Zhou, Long; Shen, Yi; Chen, Qing; Yan, Zhiguo; Zhao, Weigang; Zhu, Hehua; Zhang, Yao

doi:10.1016/j.conbuildmat.2022.127254

Cited by 62 publications

(12 citation statements)

References 151 publications

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“…This section mainly aims to summarize the current understanding of freeze-thaw damage and to identify the existence of knowledge gaps on freeze-thaw damage to concrete pavement. As summarized in reference [51], the mass loss [52,53] of concrete due to surface spalling can be generated during freeze-thaw cycles and the developed internal cracking can lead to strength deterioration [54]. Further, the specific heat capacity of concrete can be decreased [55], while the thermal conductivity [56] and the coefficient of thermal expansion [57,58] can be increased under freeze-thaw cycles.…”

Section: Theory Of Mechanical Deterioration Of Concrete Under Freeze-...mentioning

confidence: 99%

Impact of Freeze–Thaw Cycles on the Long-Term Performance of Concrete Pavement and Related Improvement Measures: A Review

Luo¹,

Bai

Ming-qin

et al. 2022

Materials

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Freeze–thaw damage is one of the most severe threats to the long-term performance of concrete pavement in cold regions. Currently, the freeze–thaw deterioration mechanism of concrete pavement has not been fully understood. This study summarizes the significant findings of concrete pavement freeze–thaw durability performance, identifies existing knowledge gaps, and proposes future research needs. The concrete material deterioration mechanism under freeze–thaw cycles is first critically reviewed. Current deterioration theories mainly include the hydrostatic pressure hypothesis, osmolarity, and salt crystallization pressure hypothesis. The critical saturation degree has been proposed to depict the influence of internal saturation on freeze–thaw damage development. Meanwhile, the influence of pore solution salinity on freeze–thaw damage level has not been widely investigated. Additionally, the deterioration mechanism of the typical D-cracking that occurs in concrete pavement has not been fully understood. Following this, we investigate the coupling effect between freeze–thaw and other loading or environmental factors. It is found that external loading can accelerate the development of freeze–thaw damage, and the acceleration becomes more evident under higher stress levels. Further, deicing salts can interact with concrete during freeze–thaw cycles, generating internal pores or leading to crystalline expansion pressure. Specifically, freeze–thaw development can be mitigated under relatively low ion concentration due to increased frozen points. The interactive mechanism between external loading, environmental ions, and freeze–thaw cycles has not been fully understood. Finally, the mitigation protocols to enhance frost resistance of concrete pavement are reviewed. Besides the widely used air-entraining process, the freeze–thaw durability of concrete can also be enhanced by using fiber reinforcement, pozzolanic materials, surface strengthening, Super Absorbent Polymers (SAPs), and Phase Change Materials. This study serves as a solid base of information to understand how to enhance the freeze–thaw durability of concrete pavement.

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Section: Theory Of Mechanical Deterioration Of Concrete Under Freeze-...mentioning

confidence: 99%

Impact of Freeze–Thaw Cycles on the Long-Term Performance of Concrete Pavement and Related Improvement Measures: A Review

Luo¹,

Bai

Ming-qin

et al. 2022

Materials

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“…Consequently, freezing water causes stresses in the internal structure of the material and causes crack formation. In the case of freezing followed by thawing cycles, the damage to the material is greater [10]. In case of fire, the temperature of the building material rises to very high values.…”

Section: Introductionmentioning

confidence: 99%

A novel method for temperature self-sensing of reinforced concrete

Ozturk

2024

Phys. Scr.

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In this work, a temperature-sensing reinforced concrete has been developed using capacitance and resistance-based measurements. No additives are required for self-temperature sensing. Steel bars in the reinforced concrete are used as electrodes. To determine the self-sensing properties of the reinforced concrete specimen, it is cooled from room temperature to -9°C and heated from room temperature until it reaches 50.9°C. The varying capacitance and resistance values of the sample concerning temperature changes are evaluated. Fractional changes in capacitance and resistance upon cooling are 80.6% and 276%, respectively. Fractional changes in capacitance and resistance upon warming are 60% and 35%, respectively. Temperature coefficients of capacitance and resistance (fractional change in capacitance and resistance per unit change in temperature) upon cooling are 2.5 × 10-2/°C and 8.6 × 10-2/°C, while upon warming they are 2.2 × 10-2/°C and 1.3 × 10-2/°C. This study aims to use capacitance and resistance-based sensing techniques to detect temperature variations in steel-reinforced concrete structures. Further studies are planned to investigate various factors such as moisture, porosity, aggregate proportion, and water content that affect the self-temperature-sensing performance of reinforced concrete.

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“…Freeze-thaw damage to cement-based materials under the action of FTCs manifests in two ways: internal freeze-expansion cracking and surface erosion spalling [1]. The action of FTCs is one of the causes of the damage to and failure of building structures [2,3].…”

Section: Introductionmentioning

confidence: 99%

The Effect of Different Freeze-Thaw Cycles on Mortar Gas Permeability and Pore Structure

Chen¹,

Xu²,

Zhang³

et al. 2023

Fluid Dynamics &Amp; Materials Processing

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Two different freeze-thaw cycles (FTC) are considered in this study to assess the related impact on gas permeability and micro-pore structure of a mortar. These are the water-freezing/water-thawing (WF-WT) and the air-freezing/air-thawing (AF-AT) cycles. The problem is addressed experimentally through an advanced nuclear magnetic resonance (NMR) technique able to provide meaningful information on the relationships among gas permeability, pore structure, mechanical properties, and the number of cycles. It is shown that the mortar gas permeability increases with the number of FTCs, the increase factor being 20 and 12.83 after 40 cycles for the WF-WT and AF-AT, respectively. The results also confirm that gas permeability hysteresis phenomena occur during the confining pressure loading and unloading process.

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Research progress of the thermophysical and mechanical properties of concrete subjected to freeze-thaw cycles

Cited by 62 publications

References 151 publications

Impact of Freeze–Thaw Cycles on the Long-Term Performance of Concrete Pavement and Related Improvement Measures: A Review

Impact of Freeze–Thaw Cycles on the Long-Term Performance of Concrete Pavement and Related Improvement Measures: A Review

A novel method for temperature self-sensing of reinforced concrete

The Effect of Different Freeze-Thaw Cycles on Mortar Gas Permeability and Pore Structure

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