Multiscale failure analysis of fiber reinforced concrete based on a discrete crack model

Etse, Guillermo; Caggiano, António; Vrech, Sonia M.

doi:10.1007/s10704-012-9733-z

Cited by 56 publications

(21 citation statements)

References 52 publications

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“…In order to mitigate this problem, chopped strand AR glass fiber is proposed in this study to provide a localized reinforcing effect within the cementitious matrix in order to control the crack formation and subsequent propagations due to the exposure to the aggressive environment. These fine fibers are densely scattered in the binder matrix in order to provide localized restrains in random directions to control micro cracks openings and propagation of cracks (7)(8)(9)(10). Disodium oxide (Na 2 O) and dipotassium oxide (K 2 O) are low in glass fiber and therefore it enhances the corrosion resistance to water and higher surface resistivity.…”

Section: Introductionmentioning

confidence: 99%

Alkali-resistant glass fiber reinforced high strength concrete in simulated aggressive environment

Kwan¹,

Cheah

Ramli

et al. 2018

Mater. construcc.

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The durability of the alkali-resistant (AR) glass fiber reinforced concrete (GFRC) in three simulated aggresive environments, namely tropical climate, cyclic air and seawater and seawater immersion was investigated. Durability examinations include chloride diffusion, gas permeability, X-ray diffraction (XRD) and scanning electron microscopy examination (SEM). The fiber content is in the range of 0.6 % to 2.4 %. Results reveal that the specimen containing highest AR glass fiber content suffered severe strength loss in seawater environment and relatively milder strength loss under cyclic conditions. The permeability property was found to be more inferior with the increase in the fiber content of the concrete. This suggests that the AR glass fiber is not suitable for use as the fiber reinforcement in concrete is exposed to seawater. However, in both the tropical climate and cyclic wetting and drying, the incorporation of AR glass fiber prevents a drastic increase in permeability.

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Section: Introductionmentioning

confidence: 99%

Alkali-resistant glass fiber reinforced high strength concrete in simulated aggressive environment

Kwan¹,

Cheah

Ramli

et al. 2018

Mater. construcc.

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“…The necessity of crack tracking schemes can be avoided by using discrete approaches based on the use of interface elements (with a zero thickness, e.g. [21][22][23][40][41][42][43][44]). In this approach the kinematics of a crack is described by a displacement discontinuity (crack opening width) and a cohesive law is used to describe the material degradation.…”

Section: Introductionmentioning

confidence: 99%

On the use of finite elements with a high aspect ratio for modeling cracks in quasi-brittle materials

Manzoli

Maedo

Bitencourt

et al. 2016

Engineering Fracture Mechanics

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a b s t r a c tA new technique for modeling cracks in quasi-brittle materials based on the use of interface solid finite elements is presented. This strategy named mesh fragmentation technique consists in introducing sets of standard low-order solid finite elements with a high aspect ratio in between regular (or bulk) elements of the mesh to fill the very thin gaps left by the mesh fragmentation procedure. The conception of this strategy is supported by the fact that, as the aspect ratio of a standard low-order solid finite element increases, the element strains also increase, approaching the same kinematics as the Continuum Strong Discontinuity Approach. As a consequence, the analyses can be performed integrally in the context of the continuum mechanics, and complex crack patterns can be simulated without the need of tracking algorithms. A tension damage constitutive relation between stresses and strains is proposed to describe crack formation and propagation. This constitutive model is integrated using an implicit-explicit integration scheme to avoid convergence drawbacks, commonly found in problems involving discontinuities. 2D and 3D numerical analyses are performed to show the applicability of the presented technique. Relevant aspects such as the influence of the thickness of the interface elements and mesh objectivity are investigated. The results show that the technique is able to predict satisfactorily the behavior of structural members involving different crack patterns, including multiple cracks, without significant mesh dependency provided that unstructured meshes are used.

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“…Close inspection revealed in figure 2 & 3 that the interfacial transition zone (ITZ) between the AMP and the original aggregate has a lot of voids and micro-cracks which lead to a high tendency of cracking and reduction in the bond between the new mortar and the old mortar. Consequently, RCA concrete has lower strength and lower elasticity modulus compared to conventional concrete [12][13]…”

Section: Problems Of Adhered Mortar Paste (Amp)mentioning

confidence: 99%

Assessment of Recycled Concrete Aggregate (Rca) Usage in Concrete

Ntaryamira¹,

Quansah²,

Yun-lian³

2017

IJRET

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Multiscale failure analysis of fiber reinforced concrete based on a discrete crack model

Cited by 56 publications

References 52 publications

Alkali-resistant glass fiber reinforced high strength concrete in simulated aggressive environment

Alkali-resistant glass fiber reinforced high strength concrete in simulated aggressive environment

On the use of finite elements with a high aspect ratio for modeling cracks in quasi-brittle materials

Assessment of Recycled Concrete Aggregate (Rca) Usage in Concrete

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