Numerical modelling of non-uniform corrosion induced concrete crack width

Shangtong Yang, Xun Xi, Kefei Li, Chun-Qing Li

Research output: Contribution to journalArticle

Abstract

Corrosion of reinforced concrete is one of the major deterioration mechanisms which result in premature failure of the reinforced concrete structures. Crack width is often used as an effective criterion to assess the serviceability of concrete structures. However, research on prediction of corrosion-induced concrete crack width, especially by considering the corrosion as a non-uniform process, has still been scarce. This paper attempts to develop a finite element model to predict the crack width for corrosion-affected concrete structures under realistic non-uniform corrosion of the reinforcement. A non-uniform corrosion model was first formulated as a function of time. To simulate arbitrary cracking in concrete, cohesive elements are inserted in the sufficiently fine mesh which is achieved through a script written in Python. The surface crack width is obtained as a function of service time and verification against experimental results from literature is conducted. Accurate prediction of crack width can allow timely maintenance which prolongs the service life of the reinforced concrete structures.
LanguageEnglish
Article number04018120
Number of pages12
JournalJournal of Structural Engineering
Volume144
Issue number8
Early online date12 Jun 2018
DOIs
StatePublished - 31 Aug 2018

Fingerprint

Concretes
Corrosion
Cracks
Concrete construction
Reinforced concrete
Service life
Deterioration
Reinforcement

Keywords

  • corrosion
  • crack width
  • cohesive crack model
  • reinforced concrete
  • numerical modelling
  • concrete structures

Cite this

@article{6402ebac99d64292a24ab57c1f68ae7a,
title = "Numerical modelling of non-uniform corrosion induced concrete crack width",
abstract = "Corrosion of reinforced concrete is one of the major deterioration mechanisms which result in premature failure of the reinforced concrete structures. Crack width is often used as an effective criterion to assess the serviceability of concrete structures. However, research on prediction of corrosion-induced concrete crack width, especially by considering the corrosion as a non-uniform process, has still been scarce. This paper attempts to develop a finite element model to predict the crack width for corrosion-affected concrete structures under realistic non-uniform corrosion of the reinforcement. A non-uniform corrosion model was first formulated as a function of time. To simulate arbitrary cracking in concrete, cohesive elements are inserted in the sufficiently fine mesh which is achieved through a script written in Python. The surface crack width is obtained as a function of service time and verification against experimental results from literature is conducted. Accurate prediction of crack width can allow timely maintenance which prolongs the service life of the reinforced concrete structures.",
keywords = "corrosion, crack width, cohesive crack model, reinforced concrete, numerical modelling, concrete structures",
author = "Shangtong Yang and Xun Xi and Kefei Li and Chun-Qing Li",
year = "2018",
month = "8",
day = "31",
doi = "10.1061/(ASCE)ST.1943-541X.0002108",
language = "English",
volume = "144",
journal = "Journal of Structural Engineering",
issn = "0733-9445",
number = "8",

}

Numerical modelling of non-uniform corrosion induced concrete crack width. / Yang, Shangtong; Xi, Xun; Li, Kefei ; Li, Chun-Qing.

In: Journal of Structural Engineering, Vol. 144, No. 8, 04018120, 31.08.2018.

Research output: Contribution to journalArticle

TY - JOUR

T1 - Numerical modelling of non-uniform corrosion induced concrete crack width

AU - Yang,Shangtong

AU - Xi,Xun

AU - Li,Kefei

AU - Li,Chun-Qing

PY - 2018/8/31

Y1 - 2018/8/31

N2 - Corrosion of reinforced concrete is one of the major deterioration mechanisms which result in premature failure of the reinforced concrete structures. Crack width is often used as an effective criterion to assess the serviceability of concrete structures. However, research on prediction of corrosion-induced concrete crack width, especially by considering the corrosion as a non-uniform process, has still been scarce. This paper attempts to develop a finite element model to predict the crack width for corrosion-affected concrete structures under realistic non-uniform corrosion of the reinforcement. A non-uniform corrosion model was first formulated as a function of time. To simulate arbitrary cracking in concrete, cohesive elements are inserted in the sufficiently fine mesh which is achieved through a script written in Python. The surface crack width is obtained as a function of service time and verification against experimental results from literature is conducted. Accurate prediction of crack width can allow timely maintenance which prolongs the service life of the reinforced concrete structures.

AB - Corrosion of reinforced concrete is one of the major deterioration mechanisms which result in premature failure of the reinforced concrete structures. Crack width is often used as an effective criterion to assess the serviceability of concrete structures. However, research on prediction of corrosion-induced concrete crack width, especially by considering the corrosion as a non-uniform process, has still been scarce. This paper attempts to develop a finite element model to predict the crack width for corrosion-affected concrete structures under realistic non-uniform corrosion of the reinforcement. A non-uniform corrosion model was first formulated as a function of time. To simulate arbitrary cracking in concrete, cohesive elements are inserted in the sufficiently fine mesh which is achieved through a script written in Python. The surface crack width is obtained as a function of service time and verification against experimental results from literature is conducted. Accurate prediction of crack width can allow timely maintenance which prolongs the service life of the reinforced concrete structures.

KW - corrosion

KW - crack width

KW - cohesive crack model

KW - reinforced concrete

KW - numerical modelling

KW - concrete structures

UR - https://ascelibrary.org/journal/jsendh

U2 - 10.1061/(ASCE)ST.1943-541X.0002108

DO - 10.1061/(ASCE)ST.1943-541X.0002108

M3 - Article

VL - 144

JO - Journal of Structural Engineering

T2 - Journal of Structural Engineering

JF - Journal of Structural Engineering

SN - 0733-9445

IS - 8

M1 - 04018120

ER -