Mechanisms of crack propagation due to corrosion of reinforcement in concrete by AE-SiGMA and BEM

Uddin, Ahsan; Numata, Kenichiro; Shimasaki, Jun; Shigeishi, Mitsuhiro; Ohtsu, Masayasu

doi:10.1016/j.conbuildmat.2003.10.007

Cited by 48 publications

(12 citation statements)

References 6 publications

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“…Although this method seems to be rather primitive, this is quite often used successfully. A more sophisticated form of doing this procedure with the help of piezo electric transducers and advanced electronic system for the analysis is also available now a days [16,17]. This requires more practical experience and interpreting capacity.…”

Section: Introductionmentioning

confidence: 97%

Corrosion monitoring of steel in concrete by galvanostatic pulse technique

Sathiyanarayanan

Natarajan

Saravanan

et al. 2006

Cement and Concrete Composites

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Section: Introductionmentioning

confidence: 97%

Corrosion monitoring of steel in concrete by galvanostatic pulse technique

Sathiyanarayanan

Natarajan

Saravanan

et al. 2006

Cement and Concrete Composites

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“…22 Similar behavior has been observed in corrosion cracking of concrete where crack initiation was due to the tensile mode, while as the crack length increased, the shear mode became more active. 23 As seen in Table 1, the increase of fibre content which activated the shear mode was connected to the increased fracture toughness of fibre concrete. Therefore, the specimens did not break with a brittle vertical crack but the crack bifurcated to different smaller cracks on different directions, spreading the fracture energy to wider volume.…”

Section: Fracture Modementioning

confidence: 90%

Acoustic emission of steel-fiber concrete under four-point bending

et al. 2009

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This work deals with the AE behavior of concrete under four-point bending. Different contents of steel fibers were included to investigate their influence on the load-bearing capacity and on the fracture mechanisms. The AE waveform characteristics revealed that, although tension was the dominant mechanism of fracture for the plain material, the increase in the fiber content resulted in extension of the shear failure due to improvement of the weak tensile properties of concrete. Appropriate AE indices employed for early warning prior to macroscopic failure can lead to more suitable design of the reinforcement, in order to withstand the specific stresses.

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“…Damage initiation refers to the beginning of degradation of the response of a material point. It has been indicated that Mode I fracture dominate crack propagation induced by corrosion of reinforcement and shear fracture properties has little effect on mixed-mode fracture of concrete for homogeneous numerical model (Gálvez, Cendón andPlanas 2002, Farid Uddin, Numata, Shimasaki, Shigeishi andOhtsu 2004). Therefore, only Mode I fracture (i.e., cracking) is considered in this paper.…”

Section: Formulation Of Finite Element Modelmentioning

confidence: 99%

Accurate cover crack modelling of reinforced concrete structures subjected to non-uniform corrosion

Yang

2018

Structure and Infrastructure Engineering

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Concrete cover cracking caused by reinforcement corrosion is a significant durability problem of reinforced concrete structures. Extensive research has been carried out in the last few decades while most were focused on corrosion of a single reinforcing bar. Very little research has examined the whole cover cracking of reinforced concrete structures due to multiple reinforcement corrosion. This paper develops a numerical model to predict the structural failure of the whole cover of concrete induced by corrosion of multiple reinforcing bars. Moreover, a non-uniform corrosion model is established based on experimental results, in contrast to conventional uniform assumption. Two typical cover failure modes under the non-uniform corrosion of multiple reinforcing bars are identified and discussed. The effects of cover thickness, reinforcement spacing, fracture energy of concrete, etc., on cover cracking patterns and crack width are also investigated. The derived numerical model is verified by comparing the results with those from experiments in literature. Accurate prediction of concrete cover cracking can allow timely maintenance of existing structures and rational design for new buildings which prolongs the service life of the reinforced concrete structures.

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Mechanisms of crack propagation due to corrosion of reinforcement in concrete by AE-SiGMA and BEM

Cited by 48 publications

References 6 publications

Corrosion monitoring of steel in concrete by galvanostatic pulse technique

Corrosion monitoring of steel in concrete by galvanostatic pulse technique

Acoustic emission of steel-fiber concrete under four-point bending

Accurate cover crack modelling of reinforced concrete structures subjected to non-uniform corrosion

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