Experimental study on water fracture interactions in concrete

Chen, Jiayao; Du, Chengbin; You, Maoyuan; Jiang, Shouyan; Sun, Lei

doi:10.1016/j.engfracmech.2017.04.050

Cited by 34 publications

(8 citation statements)

References 17 publications

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“…The wedge splitting test has been widely used to study the water‐fracture interaction 37–39 . Slowik and Saouma 40 inspired by the experiment performed in, 41 proposed a mechanical wedge‐splitting device to investigate the fracture propagation in concrete under water pressure.…”

Section: Numerical Validationmentioning

confidence: 99%

See 1 more Smart Citation

A poromechanical‐damage‐based‐model for water‐driven fracture modeling of concrete gravity dams

Bessaid

Matallah

Rouissat

2021

Num Anal Meth Geomechanics

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Water‐driven fracture propagation is a fundamental issue in the failure analysis of cracked concrete gravity dams. In the present paper, a poromechanical‐damage–based model is proposed to study the water‐fracture interaction in saturated porous media in order to highlight the importance of considering the presence of the pressurized water in propagating fractures. The solid behavior is described by a plastic damage model. The crack openings computation is performed using a post‐processing method combined with the fracture energy regularization concept. The hydraulic behavior is governed by Darcy's law for the un‐cracked material. After cracking, the flow through fracture is driven by the cubic law and the material permeability is increased as the crack propagates. The validations are performed on a wedge splitting test. The failure analysis of a concrete gravity dam under hydraulic fracturing shows that considering the water pressure in cracks leads to deeper and larger fracture propagation.

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Section: Numerical Validationmentioning

confidence: 99%

“…During the experiments, applied force, Crack Mouth Opening Displacement, water input pressure, and pressure readings along the ligament have been monitored. Chen et al 38 . conducted a similar study using a watertight device that has a minimal effect on the concrete properties and can stand high water pressures.…”

Section: Numerical Validationmentioning

confidence: 99%

A poromechanical‐damage‐based‐model for water‐driven fracture modeling of concrete gravity dams

Bessaid

Matallah

Rouissat

2021

Num Anal Meth Geomechanics

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show abstract

“…Using this concrete specimen, Slowik and Saouma [3] found that the cracking opening rate has a major impact on the water pressure distribution in the concrete crack under dynamic loading. Furthermore, Chen et al [4] determined a water pressure distribution model and failure patterns in a concrete crack via an improved hydraulic device and wedge-splitting tests. And the prediction model of critical water pressure and the hydraulic fracturing mechanism of concrete specimen were also discussed by utilizing the cylinder specimen with an embedded crack [5] and the central-precrack cube specimen [6].…”

Section: Introductionmentioning

confidence: 99%

Variation of Critical Water Pressure for Hydraulic Fracturing in Cement Mortar under Sulfate Attack

et al. 2022

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Hydraulic fracturing may be induced easily in a cement-based structure in a sulfate-rich environment, which threatens engineering safety. In order to investigate the evolution of critical water pressure, a series of hydraulic fracturing tests and splitting tensile strength tests on the cement mortar under different sulfate-exposure periods are performed. The critical water pressure of the cement mortar under sulfate attack experiences an initial increase stage and a subsequent decrease stage. A stress intensity factor is modified by two proposed damage variables which are crack length and fracture stress. Then, the relationship between the critical water pressure and the tensile strength is established. Moreover, an evolution model of the critical water pressure is proposed, which reveals that the matrix tensile strength and porosity of cement mortar strongly affect the critical water pressure evolution. Additionally, an empirical formula is suggested to describe the critical water pressure evolution of the cement mortar under sulfate attack, and its validity is verified by experimental results.

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“…Accordingly, this study investigated the effect of five different initial crack-depth ratios on the fracture characteristics of FRP-strengthened concrete beams by carrying out three-point bending tests on the basis of the theory of damage-fracture mechanics. [15][16][17][18] The effects of different initial crack-depth ratios on the fracture parameters of the FRP-strengthened concrete beams were analyzed. The entire process of crack extension and the interfacial debonding failure of the FRP-strengthened concrete beams are described in qualitative terms.…”

Section: Introductionmentioning

confidence: 99%

Effect of initial crack‐depth ratio on fracture characteristics of FRP‐strengthened concrete

Liu

Fan

Shi

2021

Fatigue Fract Eng Mat Struct

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To investigate the fracture characteristics of FRP (fiber-reinforced polymer)strengthened concrete, three-point bending tests were carried out on concrete specimens with different initial crack-depth ratios. The effects of the different crack-depth ratios on the fracture parameters were analyzed, and the correlation between the crack-depth ratio and the fracture parameters was verified quantitatively. The test results reveal that there are three critical points in the damage process: the crack initiation point, first peak point, and ultimate bearing capacity point. With the increase of the initial crack-depth ratio, the crack initiation load decreased, but the first peak load and ultimate load first increased and then decreased. The stress intensity factors of the three points also first increased and then decreased. Additionally, the damage variable decreased with the initial crack-depth ratio increased. The increment of the critical crack-depth ratio and the flexibility coefficient are related to the initial crack-depth ratio.

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Experimental study on water fracture interactions in concrete

Cited by 34 publications

References 17 publications

A poromechanical‐damage‐based‐model for water‐driven fracture modeling of concrete gravity dams

A poromechanical‐damage‐based‐model for water‐driven fracture modeling of concrete gravity dams

Variation of Critical Water Pressure for Hydraulic Fracturing in Cement Mortar under Sulfate Attack

Effect of initial crack‐depth ratio on fracture characteristics of FRP‐strengthened concrete

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