Assessment of sulfate attack and freeze–thaw cycle damage of cement-based materials by a nonlinear acoustic technique

Bharata, Rendy; Yin, Tingyuan; Wang, Hao; Zhang, Taotao

doi:10.1617/s11527-016-0949-7

Cited by 14 publications

(2 citation statements)

References 32 publications

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“…Various numbers (0, 1, 3, 6, 10, and 15) of freeze-thaw cycles were tested. Based on the results of this study, 8–12 freeze-thaw cycles is sufficient for understanding the effect of freeze-thaw cycles on strength [27]. A GDS permafrost triaxial apparatus was selected for consolidated undrained (CU) testing, and strain control mode was adopted for all tests.…”

Section: Test Programmentioning

confidence: 99%

Effect of Freeze-Thaw Cycles on Triaxial Strength Property Damage to Cement Improved Aeolian Sand (CIAS)

Wang

et al. 2019

Materials

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Natural aeolian sand has the characteristics of low cohesion and poor water stability. In order to improve its crack resistance properties in the process of freeze-thaw cycles, P.O 42.5 ordinary Portland cement was added to form a mixture called cement improved aeolian sand (CIAS). SEM was used to analyze the microscopic micro-structure of CIAS at different times (7 days and 28 days). The mechanical properties of CIAS samples affected by freeze-thaw cycles were tested in a triaxial instrument, and gray-scale images of the three-phase distribution in the CIAS after freeze-thaw cycling were obtained by computed tomography (CT) scanning technology. The pore characteristic parameters (pore area, fractal dimension, and crack length) were studied by digital image process technique. Based on classical Griffith fracture theory, the development of the crack length and crack width with increasing freeze-thaw cycles is determined. Assuming that the pore area subordinates to the Weibull distribution, the parameters of the Weibull distribution, the damage evolution defined by the elastic modulus attenuation, and the pore area development of CIAS were determined. Research shows the cohesion decreases and internal friction angle increases with increasing cycle numbers. Three development patterns are observed: crack growth, crack closure, and crack merging, and the three patterns interact during freeze-thaw cycling. Furthermore, the fractal dimension of the pore edge fluctuates with the increasing number of freeze-thaw cycles. This work provides a theoretical basis for the application of aeolian sand and develops a method for disaster prevention in applications of freeze-thaw cycling.

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Section: Test Programmentioning

confidence: 99%

Effect of Freeze-Thaw Cycles on Triaxial Strength Property Damage to Cement Improved Aeolian Sand (CIAS)

Wang

et al. 2019

Materials

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“…The opening and closing of the defects or voids is involved with stress at a microscale. The application of the nonlinear ultrasonic method in cement-based materials has also been reported for the evaluation of the strength of concrete [25], damage due to alkali–silica reaction [26], the degree of thermal damage in concrete [20,21,27,28,29], carbonation assessment [30], and the accumulated damage due to freezing and thawing cycles [31,32].…”

Section: Introductionmentioning

confidence: 99%

Nonlinear Resonance Vibration Assessment to Evaluate the Freezing and Thawing Resistance of Concrete

2019

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Under cold environments, the freezing and thawing cycles of water in concrete reduce the lifetime and durability of concrete structures. For enhanced freezing and thawing resistance, entrained air voids are generally required, but malfunctioning of air entrainment is sometimes reported in the field. To evaluate the quality of air entrainment, this study proposes a nondestructive method that is a preceding evaluation before damage to the concrete. A nonlinear resonance vibration method is adopted in samples having an identical air void content. The durable concrete sample with resistance to freezing and thawing cycles shows higher nonlinearity in its resonance. Thus, the quality of air entrainment and, furthermore, the potential freezing and thawing resistance can possibly be evaluated by measuring the nonlinearity parameter of the concrete, which is preliminary study to attempt the preceding evaluation of freezing and thawing resistance using nondestructive method.

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Influence of acidic environment on damage mechanism of sandstone under different climatic temperatures

Cao²,

Yuan³

et al. 2022

Bull Eng Geol Environ

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Assessment of sulfate attack and freeze–thaw cycle damage of cement-based materials by a nonlinear acoustic technique

Cited by 14 publications

References 32 publications

Effect of Freeze-Thaw Cycles on Triaxial Strength Property Damage to Cement Improved Aeolian Sand (CIAS)

Effect of Freeze-Thaw Cycles on Triaxial Strength Property Damage to Cement Improved Aeolian Sand (CIAS)

Nonlinear Resonance Vibration Assessment to Evaluate the Freezing and Thawing Resistance of Concrete

Influence of acidic environment on damage mechanism of sandstone under different climatic temperatures

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