Numerical simulation on time-dependent mechanical behavior of concrete under coupled axial loading and sulfate attack

Yin, Guang-Ji; Zuo, Xiao-Bao; Tang, Yu-Juan; Ayinde, Olawale Olatunde; Wang, Jialin

doi:10.1016/j.oceaneng.2017.07.016

Cited by 59 publications

(21 citation statements)

References 47 publications

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“…Yang et al [24] studied the uniaxial compressive stress-strain constitutive relation of corroded concrete in a saline soil area of Western China and proposed a constitutive model based on ion diffusion, chemical reaction, and mechanical analysis. Yin et al [25] simulated the time-dependent mechanical behaviors, such as stress redistribution and bearing capacity degradation of concrete suffering the coupled axial loading and sulfate attack, and a coupled chemomechanical damage constitutive model was determined by introducing the chemical damage. Zhang and She [17] described the modulus variation of a mortar exposed to external sulfate attack, and they pointed out that the elastic modulus values of the mortar attacked by sulfate decreased due to the nucleation of microcracks.…”

Section: Introductionmentioning

confidence: 99%

Damage Constitutive Model and Mechanical Performance Deterioration of Concrete under Sulfate Environment

Liu

Chen

et al. 2020

Mathematical Problems in Engineering

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The effects of erosion mode, erosion age, and concentration of sulfate solution on mechanical properties of concrete were investigated. The dimensionless relationship model of the stress-strain of concrete on the basis of randomness was proposed. The variation of the elasticity modulus and Poisson’s ratio of the concrete surface attacked by sulfate was studied, and a novel method of using a superficial parameter to characterize the performance change of the concrete surface was recommended. The results showed that the dimensionless relationship model of stress-strain of concrete could be used to represent the variations of mechanical properties of concrete. The differences of load-displacement of concrete before and after sulfate attack were reflected as the change of curve’s slope and ultimate bearing capacity, and the slope of a straight section of the lateral and longitudinal strain curves of concrete surface also varied. The increment rates of ultimate bearing capacity of concrete attacked by 1% and saturated sulfate solution were about 30% and 10%, respectively. However, the decreasing ratio of the ultimate bearing capacity of concrete attacked by saturated sulfate solution was approximately 25%. The damage factor of the elasticity modulus of the concrete surface of C20 and C40 was 0.185 and −0.19, respectively. The obtained results could provide a support for investigating the variations of stress-strain relationship and mechanical performance of concrete under a sulfate environment.

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Section: Introductionmentioning

confidence: 99%

Damage Constitutive Model and Mechanical Performance Deterioration of Concrete under Sulfate Environment

Liu

Chen

et al. 2020

Mathematical Problems in Engineering

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“…However, the model cannot be used to predict the concentration of sulfate ion under the coupling of various environmental factors. Yin et al [22][23] established a diffusion-reaction model to simulate the time-varying mechanical behavior of concrete under the coupling of axial load and sulfate attack on the basis of Fick's law and chemical reaction kinetics. The distribution of concentration of sulfate ion, gypsum, and ettringite was obtained.…”

Section: State Of the Artmentioning

confidence: 99%

Numerical Simulation of the Ion Transport Behavior in Concrete under Coupled Axial Loading and Sulfate Attack

2020

Teh. vjesn.

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“…c j,i v j,i υ j (X(t)), (7) where υ j (X(t)) � υ j (X(t)) · V is denoted as the deterministic reaction rate of the total number of molecules Q i in reaction R j . Note that this reaction rate at time t is a constant determined by equation (3) because the concentrations C j,i (t), i � 1, 2, .…”

Section: Stochastic Kinetic Equation For Composite Chemicalmentioning

confidence: 99%

“…A more consistent viewpoint is the growth and expansion of the corrosion products in concrete materials accelerate the cracks' development, leading to the deterioration of the mechanical properties of concrete materials [1][2][3][4]. Although researchers have made signi cant progress in the experimental studies on concrete deteriorations [5][6][7][8], it is still very di cult to quantitatively analyze the deterioration process because of the niteness and variability of the experimental data. Alternatively, many researchers devote themselves to numerical studies in recent years.…”

Section: Introductionmentioning

confidence: 99%

Stochastic Dynamic Model of Sulfate Corrosion Reactions in Concrete Materials considering the Effects of Colored Gaussian Noises

Zhang

2019

Complexity

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e corrosion reactions in concrete materials subjected to external environment attack can lead to the deterioration of concrete. However, the e ects of internal uctuations on the corrosion reaction process have not been reported in current studies on damage of concrete materials. To comprehensively describe the e ects of internal uctuations, the stochastic dynamic model of corrosion reactions in concrete materials subjected to sulfate attack is established based on the law of mass conservation and random process theory, in which internal uctuations and the parameters of the chemical system are, respectively, regarded as colored Gaussian noises and a series of random variables. An experiment of sulfate corrosion reactions in concrete material is carried out to verify the e ectiveness of the proposed method. Furthermore, the e ects of variations of the initial reactant concentrations on the concentration evolution processes of the corrosion products are investigated. Results show that the stochastic dynamical responses of the corrosion reactions in concrete can be comprehensively investigated by the proposed stochastic mathematical model; the probabilistic information of the corrosion products can also be obtained conveniently. e concentration evolution process of sulfate corrosion products is a random process. e experimental data are only some samples of the random process. Concentrations of the corrosion products in concrete materials signi cantly uctuate with the variations of the initial reactant concentrations.

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Numerical simulation on time-dependent mechanical behavior of concrete under coupled axial loading and sulfate attack

Cited by 59 publications

References 47 publications

Damage Constitutive Model and Mechanical Performance Deterioration of Concrete under Sulfate Environment

Damage Constitutive Model and Mechanical Performance Deterioration of Concrete under Sulfate Environment

Numerical Simulation of the Ion Transport Behavior in Concrete under Coupled Axial Loading and Sulfate Attack

Stochastic Dynamic Model of Sulfate Corrosion Reactions in Concrete Materials considering the Effects of Colored Gaussian Noises

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