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Mixed Mode Fracture of Concrete under Proportional and Nonproportional Loading
A novel testing procedure for mixed mode crack propagation in concrete is presented: four point bend of notched beams under the action of two independent force actuators. In contrast to classicalExpand
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The cohesive zone model: advantages, limitations and challenges
Abstract This paper reviews the cohesive process zone model, a general model which can deal with the nonlinear zone ahead of the crack tip––due to plasticity or microcracking––present in manyExpand
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A general bilinear fit for the softening curve of concrete
The softening function is the main input needed to model the fracture of concrete when using a cohesive crack approach. The simplest softening function that describes concrete behaviour reasonablyExpand
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Measurement of the fracture energy using three-point bend tests: Part 3—influence of cutting theP-δ tail
Available measures of the fracture energyGF obtained with the procedure proposed by RILEM TC-50 provide values that appear to change with sample size, calling into question the possibility ofExpand
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Measurement of the fracture energy using three-point bend tests: Part 2—Influence of bulk energy dissipation
Avialable measures of the fracture energy GF obtained with the procedure proposed by RILEM TC-50 provide values that appear to change with sample size, calling into question whether GF can beExpand
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Stress Intensity factor, compliance and CMOD for a General Three-Point-Bend Beam
New simple and general expressions for the stress intensity factor, compliance and crack mouth opening displacement for three-point bend specimens are computed. Inverse functions giving the crackExpand
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A fracture criterion for sharp V-notched samples
The objective of this paper is to show the advantages of the cohesivecrack model for predicting fracture of V-notched components. Criticalvalues of the generalized stress intensity factor can beExpand
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Measurement of the fracture energy using three-point bend tests: Part 1—Influence of experimental procedures
Available measures of the fracture energy GF obtained with the procedure proposed by RILEM TC-50 provide values that appear to change with sample size, calling into question the possibility ofExpand
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Nonlinear fracture of cohesive materials
The cohesive crack is a useful model for describing a wide range of physical situations from polymers and ceramics to fiber and particle composite materials. When the cohesive zone length is of theExpand
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Fracture criteria for concrete: Mathematical approximations and experimental validation
Abstract Three well known fracture models (Cohesive Crack, Bazant's Size-Effect Law, and Two-Parameter Shah's Model) were analysed, and their size-effect prediction compared in the light of generalExpand
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