Multi-scale identification of concrete material parameters

Santosh, M.S.; Ghosh, Mandakranta

doi:10.1016/j.tafmec.2014.09.005

Cited by 14 publications

(6 citation statements)

References 80 publications

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“…Cracks initiation and propagation in the concrete require the knowledge of all fracture mechanics parameters for modes I, II, and III, that is, K Ic , K IIc , and KIII c . This is due to the fact that fracture is an important feature in concrete at all scales [17]. Moreover, the damage of concrete subjected to complex loading involves strong anisotropy due to its highly heterogeneous nature and geometrically anisotropic characteristic of microcracks.…”

Section: Discussion Of Topic Selection and Scientific Objectivesmentioning

confidence: 99%

Fracture Toughness of Concrete Containing Fly Ash

Golewski¹

2018

Coal Fly Ash Beneficiation - Treatment of Acid Mine Drainage With Coal Fly Ash

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The chapter presents results of tests on the effect of the addition of siliceous fly ashes (FA) in the amount of 0, 20, and 30% by weight of cement on the fracture processes in structural concretes. In the course of experiments, measurements of compressive strength of concrete were done as well as fracture toughness for I, II, and III model of cracking was evaluated. During the tests, the effect of age of concretes modified with the additive of fly ashes on analyzed parameters was determined. The experiments were carried out after 3, 7, 28, 90, 180, and 365 days of curing. Fracture toughness of concretes was determined based on the critical stress intensity factors, and then a generalized fracture toughness K c was determined. The properties of composites with the additive of fly ashes depend on the age of the concrete during tests. Twenty percent additive of fly ashes guarantees high fracture toughness in mature concretes, while the additive of fly ashes in the amount of 30% weight of cement has a beneficial effect on the parameters of concrete only after half a year of curing. Both the 20 and 30% additive of fly ashes significantly reduce the fracture toughness at an early age.

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Section: Discussion Of Topic Selection and Scientific Objectivesmentioning

confidence: 99%

Fracture Toughness of Concrete Containing Fly Ash

Golewski¹

2018

Coal Fly Ash Beneficiation - Treatment of Acid Mine Drainage With Coal Fly Ash

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“…Therefore, the cracks in structural elements usually start to initiate in the mixed mode loading, whereas failure of concretes is a multi-stage process that is conditioned by level and type of the applied external loads as well as by the internal structure of composite [ 38 ]. This is connected with the fact that fracture is an important feature in concrete at all scales [ 39 ], whereas cracks and notches in engineering components and structures are often subjected to complex loading conditions which generate different mixtures of normal and shear stresses ahead of the crack tip [ 40 ]. Moreover, the damage of concrete subjected to complex loading induces strong anisotropy due to its highly heterogeneous nature and geometrically anisotropic characteristic of microcracks.…”

Section: Discussion Of Scientific Objectivesmentioning

confidence: 99%

Generalized Fracture Toughness and Compressive Strength of Sustainable Concrete Including Low Calcium Fly Ash

Golewski

2017

Materials

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The paper presents the results of tests on the effect of the low calcium fly ash (LCFA) addition, in the amounts of: 0% (LCFA-00), 20% (LCFA-20) and 30% (LCFA-30) by weight of cement, on fracture processes in structural concretes. In the course of the experiments, compressive strength of concrete and fracture toughness for: I (tensile), II (in-plane shear) and III (anti-plane shear) models of cracking were measured. The tests determined the effect of age of concretes modified with LCFA on the analyzed parameters. The experiments were carried out after: 3, 7, 28, 90, 180 and 365 days of curing. Fracture toughness of concretes was determined in terms of the critical stress intensity factors: KIcS, KIIc, KIIIc and then a generalized fracture toughness Kc was specified. The obtained results are significant for the analysis of concrete structures subjected to complex loading. The properties of composites with the additive of LCFA depend on the age of the concrete tested. Mature concretes exhibit high fracture toughness at 20% additive of LCFA, while the additive of LCFA in the amount of 30% weight of cement has a beneficial effect on the parameters of concrete only after half a year of curing.

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“…The meshing technique is based on the use of coupling FE to ensure continuity between different meshes. Some other similar works are presented by (Comi et al., 2012; Feng et al., 2018; Haidar et al., 2003; Santosh and Ghosh, 2015; Sencu et al., 2016; Zhang et al., 2019b). Haidar et al.…”

Section: Introductionmentioning

confidence: 93%

“…The meshing technique is based on the use of coupling FE to ensure continuity between different meshes. Some other similar works are presented by (Comi et al, 2012;Haidar et al, 2003;Santosh and Ghosh, 2015;Sencu et al, 2016;Zhang et al, 2019b). Haidar et al (2003) modeled two scales concrete, by defining large-size finite elements with elastic analysis on it with nonlinear analysis on a smaller scale.…”

Section: Multiscale Modelsmentioning

confidence: 99%

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A review of continuum damage and plasticity in concrete: Part I – Theoretical framework

Park

Ahmed

Voyiadjis

2021

International Journal of Damage Mechanics

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In the past few decades, extensive research on concrete modeling to predict behavior, crack propagation, microcrack coalescence by utilizing different approaches (fracture mechanics, continuum damage mechanics) were investigated theoretically and numerically. The presented paper aims to review the theoretical work of continuum concrete damage and plasticity modeling in part I of the work. The detailed theoretical work is presented with some of the supporting work related to multiscale modeling and phase-field modeling is also part of this paper. Few other applications related to rate-dependent models and fatigue in concrete are also discussed. In part II of this work, the review of numerical work limited to finite element is presented. Some open issues in concrete damage modeling and future research needed are also discussed in part II.

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Multi-scale identification of concrete material parameters

Cited by 14 publications

References 80 publications

Fracture Toughness of Concrete Containing Fly Ash

Fracture Toughness of Concrete Containing Fly Ash

Generalized Fracture Toughness and Compressive Strength of Sustainable Concrete Including Low Calcium Fly Ash

A review of continuum damage and plasticity in concrete: Part I – Theoretical framework

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