A non-uniform corrosion model and meso-scale fracture modelling of concrete

Research output: Research - peer-reviewArticle

Standard

A non-uniform corrosion model and meso-scale fracture modelling of concrete. / Xi, Xun; Yang, Shangtong; Li, Chun-Qing.

In: Cement and Concrete Research, Vol. 108, 30.06.2018, p. 87-102.

Research output: Research - peer-reviewArticle

Harvard

Xi, X, Yang, S & Li, C-Q 2018, 'A non-uniform corrosion model and meso-scale fracture modelling of concrete' Cement and Concrete Research, vol 108, pp. 87-102. DOI: 10.1016/j.cemconres.2018.03.009

APA

Xi, X., Yang, S., & Li, C-Q. (2018). A non-uniform corrosion model and meso-scale fracture modelling of concrete. Cement and Concrete Research, 108, 87-102. DOI: 10.1016/j.cemconres.2018.03.009

Vancouver

Xi X, Yang S, Li C-Q. A non-uniform corrosion model and meso-scale fracture modelling of concrete. Cement and Concrete Research. 2018 Jun 30;108:87-102. Available from, DOI: 10.1016/j.cemconres.2018.03.009

Author

Xi, Xun ; Yang, Shangtong ; Li, Chun-Qing. / A non-uniform corrosion model and meso-scale fracture modelling of concrete. In: Cement and Concrete Research. 2018 ; Vol. 108. pp. 87-102

BibTeX - Download

@article{f3d23dfce52f4a08a72ea0bde84460a8,
title = "A non-uniform corrosion model and meso-scale fracture modelling of concrete",
abstract = "Corrosion-induced concrete cracking is a significant durability problem for reinforced concrete structures. Considerable research has been carried out in the last few decades to understand and model the expansion mechanism of the corrosion products around the reinforcing bar and simulate the cracking behaviour of the concrete cover. In this paper, a new corrosion model based on non-uniform corrosion expansion is formulated and validated against experimental data. A meso-scale fracture model, consisting of aggregates, cement paste/mortar and ITZ, is established for the cases of both middle and side reinforcing bars. Under the developed corrosion and concrete fracture model, the cracking phenomena of the concrete cover are accurately simulated. It has been found that the non-uniform corrosion model can be used to express the realistic corrosion rust progression around the reinforcing bar, with the best accuracy. It has also been found that some microcracks occur before they are connected to form the dominating discrete crack which usually appears on the concrete surface. Moreover, the effects of the corrosion variables, as well as other key material and geometric parameters, on surface cracking of concrete are investigated.",
keywords = "cohesive crack model, finite element method, meso-scale, non-uniform corrosion, reinforced concrete structures",
author = "Xun Xi and Shangtong Yang and Chun-Qing Li",
year = "2018",
month = "6",
doi = "10.1016/j.cemconres.2018.03.009",
volume = "108",
pages = "87--102",
journal = "Cement and Concrete Research",
issn = "0008-8846",

}

RIS (suitable for import to EndNote) - Download

TY - JOUR

T1 - A non-uniform corrosion model and meso-scale fracture modelling of concrete

AU - Xi,Xun

AU - Yang,Shangtong

AU - Li,Chun-Qing

PY - 2018/6/30

Y1 - 2018/6/30

N2 - Corrosion-induced concrete cracking is a significant durability problem for reinforced concrete structures. Considerable research has been carried out in the last few decades to understand and model the expansion mechanism of the corrosion products around the reinforcing bar and simulate the cracking behaviour of the concrete cover. In this paper, a new corrosion model based on non-uniform corrosion expansion is formulated and validated against experimental data. A meso-scale fracture model, consisting of aggregates, cement paste/mortar and ITZ, is established for the cases of both middle and side reinforcing bars. Under the developed corrosion and concrete fracture model, the cracking phenomena of the concrete cover are accurately simulated. It has been found that the non-uniform corrosion model can be used to express the realistic corrosion rust progression around the reinforcing bar, with the best accuracy. It has also been found that some microcracks occur before they are connected to form the dominating discrete crack which usually appears on the concrete surface. Moreover, the effects of the corrosion variables, as well as other key material and geometric parameters, on surface cracking of concrete are investigated.

AB - Corrosion-induced concrete cracking is a significant durability problem for reinforced concrete structures. Considerable research has been carried out in the last few decades to understand and model the expansion mechanism of the corrosion products around the reinforcing bar and simulate the cracking behaviour of the concrete cover. In this paper, a new corrosion model based on non-uniform corrosion expansion is formulated and validated against experimental data. A meso-scale fracture model, consisting of aggregates, cement paste/mortar and ITZ, is established for the cases of both middle and side reinforcing bars. Under the developed corrosion and concrete fracture model, the cracking phenomena of the concrete cover are accurately simulated. It has been found that the non-uniform corrosion model can be used to express the realistic corrosion rust progression around the reinforcing bar, with the best accuracy. It has also been found that some microcracks occur before they are connected to form the dominating discrete crack which usually appears on the concrete surface. Moreover, the effects of the corrosion variables, as well as other key material and geometric parameters, on surface cracking of concrete are investigated.

KW - cohesive crack model

KW - finite element method

KW - meso-scale

KW - non-uniform corrosion

KW - reinforced concrete structures

UR - http://www.scopus.com/inward/record.url?scp=85044472206&partnerID=8YFLogxK

UR - https://www.sciencedirect.com/journal/cement-and-concrete-research

U2 - 10.1016/j.cemconres.2018.03.009

DO - 10.1016/j.cemconres.2018.03.009

M3 - Article

VL - 108

SP - 87

EP - 102

JO - Cement and Concrete Research

T2 - Cement and Concrete Research

JF - Cement and Concrete Research

SN - 0008-8846

ER -

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