Efficiency of modelling corrosion-induced cover cracking in RC structures

L Chernin; D Val

Efficiency of modelling corrosion-induced cover cracking in RC structures

L Chernin (Lead / Corresponding author), D Val

Civil Engineering

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

Abstract

Corrosion is one of the main causes of deterioration of reinforced concrete (RC) structures. Initially, it affects serviceability of a RC structure by causing excessive cracking of the cover concrete. A number of analytical models have been proposed to predict the time to corrosion-induced crack initiation. In this paper investigations on the applicability of the two main types of the analytical models based on solution of thickwalled uniform and double cylinders subjected to uniform internal pressure are described. FE analysis is employed for this purpose. Firstly, the influence of simplified formulation of the nonlinear behaviour of concrete is examined. The limits of applicability of the analytical models are established depending on c/d ratio (i.e., the ratio of the thickness of the concrete cover to the diameter of a reinforcing bar). Secondly, inability of the analytical models to account for actual boundary conditions of corroding reinforcing bars is studied. It is found that the influence of the boundary conditions on the predictive ability of the analytical models may be very significant. The FE analysis is also employed to investigate the influence of different types of concrete cover failure: cracking and delamination. The failure conditions in terms of ratios between certain geometrical parameters of a RC section have been established. The efficiency of the analytical models to describe different types of cover failure has been discussed.

Original language	English
Title of host publication	Concrete in the low carbon era
Subtitle of host publication	proceedings of the International Conference held at the University of Dundee, Scotland, UK on 9 - 11 July 2012
Editors	Rod Jones, Moray D Newlands, Judith E Halliday, Laszlo J Csetenyi, Li Zheng, Michael McCarthy, Thomas Dyer
Publisher	University of Dundee
Pages	1505-1517
Number of pages	12
ISBN (Print)	9780957326309
Publication status	Published - Jul 2012
Event	8th International Conference: Concrete in the Low Carbon Era - Dundee, United Kingdom Duration: 9 Jul 2012 → 11 Jul 2012

Conference

Conference	8th International Conference: Concrete in the Low Carbon Era
Country/Territory	United Kingdom
City	Dundee
Period	9/07/12 → 11/07/12

Concrete in the low carbon era: proceedings of the International Conference held at the University of Dundee, Scotland, UK on 9 - 11 July 2012
Jones, R., Newlands, M. D., Halliday, J. E., Csetenyi, L. J., Zheng, L., McCarthy, M. & Dyer, T., 2012, Dundee: University of Dundee. 1851 p.
Research output: Book/Report › Book

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Chernin, L., & Val, D. (2012). Efficiency of modelling corrosion-induced cover cracking in RC structures. In R. Jones, M. D. Newlands, J. E. Halliday, L. J. Csetenyi, L. Zheng, M. McCarthy, & T. Dyer (Eds.), Concrete in the low carbon era: proceedings of the International Conference held at the University of Dundee, Scotland, UK on 9 - 11 July 2012 (pp. 1505-1517). University of Dundee.

Chernin, L ; Val, D. / Efficiency of modelling corrosion-induced cover cracking in RC structures. Concrete in the low carbon era: proceedings of the International Conference held at the University of Dundee, Scotland, UK on 9 - 11 July 2012. editor / Rod Jones ; Moray D Newlands ; Judith E Halliday ; Laszlo J Csetenyi ; Li Zheng ; Michael McCarthy ; Thomas Dyer. University of Dundee, 2012. pp. 1505-1517

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title = "Efficiency of modelling corrosion-induced cover cracking in RC structures",

abstract = "Corrosion is one of the main causes of deterioration of reinforced concrete (RC) structures. Initially, it affects serviceability of a RC structure by causing excessive cracking of the cover concrete. A number of analytical models have been proposed to predict the time to corrosion-induced crack initiation. In this paper investigations on the applicability of the two main types of the analytical models based on solution of thickwalled uniform and double cylinders subjected to uniform internal pressure are described. FE analysis is employed for this purpose. Firstly, the influence of simplified formulation of the nonlinear behaviour of concrete is examined. The limits of applicability of the analytical models are established depending on c/d ratio (i.e., the ratio of the thickness of the concrete cover to the diameter of a reinforcing bar). Secondly, inability of the analytical models to account for actual boundary conditions of corroding reinforcing bars is studied. It is found that the influence of the boundary conditions on the predictive ability of the analytical models may be very significant. The FE analysis is also employed to investigate the influence of different types of concrete cover failure: cracking and delamination. The failure conditions in terms of ratios between certain geometrical parameters of a RC section have been established. The efficiency of the analytical models to describe different types of cover failure has been discussed.",

author = "L Chernin and D Val",

year = "2012",

month = jul,

language = "English",

isbn = "9780957326309",

pages = "1505--1517",

editor = "Rod Jones and Newlands, \{Moray D\} and Halliday, \{Judith E\} and Csetenyi, \{Laszlo J\} and Li Zheng and Michael McCarthy and Thomas Dyer",

booktitle = "Concrete in the low carbon era",

publisher = "University of Dundee",

note = "8th International Conference: Concrete in the Low Carbon Era ; Conference date: 09-07-2012 Through 11-07-2012",

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Chernin, L & Val, D 2012, Efficiency of modelling corrosion-induced cover cracking in RC structures. in R Jones, MD Newlands, JE Halliday, LJ Csetenyi, L Zheng, M McCarthy & T Dyer (eds), Concrete in the low carbon era: proceedings of the International Conference held at the University of Dundee, Scotland, UK on 9 - 11 July 2012. University of Dundee, pp. 1505-1517, 8th International Conference: Concrete in the Low Carbon Era, Dundee, United Kingdom, 9/07/12.

Efficiency of modelling corrosion-induced cover cracking in RC structures. / Chernin, L (Lead / Corresponding author); Val, D.
Concrete in the low carbon era: proceedings of the International Conference held at the University of Dundee, Scotland, UK on 9 - 11 July 2012. ed. / Rod Jones; Moray D Newlands; Judith E Halliday; Laszlo J Csetenyi; Li Zheng; Michael McCarthy; Thomas Dyer. University of Dundee, 2012. p. 1505-1517.

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

TY - GEN

T1 - Efficiency of modelling corrosion-induced cover cracking in RC structures

AU - Chernin, L

AU - Val, D

PY - 2012/7

Y1 - 2012/7

N2 - Corrosion is one of the main causes of deterioration of reinforced concrete (RC) structures. Initially, it affects serviceability of a RC structure by causing excessive cracking of the cover concrete. A number of analytical models have been proposed to predict the time to corrosion-induced crack initiation. In this paper investigations on the applicability of the two main types of the analytical models based on solution of thickwalled uniform and double cylinders subjected to uniform internal pressure are described. FE analysis is employed for this purpose. Firstly, the influence of simplified formulation of the nonlinear behaviour of concrete is examined. The limits of applicability of the analytical models are established depending on c/d ratio (i.e., the ratio of the thickness of the concrete cover to the diameter of a reinforcing bar). Secondly, inability of the analytical models to account for actual boundary conditions of corroding reinforcing bars is studied. It is found that the influence of the boundary conditions on the predictive ability of the analytical models may be very significant. The FE analysis is also employed to investigate the influence of different types of concrete cover failure: cracking and delamination. The failure conditions in terms of ratios between certain geometrical parameters of a RC section have been established. The efficiency of the analytical models to describe different types of cover failure has been discussed.

AB - Corrosion is one of the main causes of deterioration of reinforced concrete (RC) structures. Initially, it affects serviceability of a RC structure by causing excessive cracking of the cover concrete. A number of analytical models have been proposed to predict the time to corrosion-induced crack initiation. In this paper investigations on the applicability of the two main types of the analytical models based on solution of thickwalled uniform and double cylinders subjected to uniform internal pressure are described. FE analysis is employed for this purpose. Firstly, the influence of simplified formulation of the nonlinear behaviour of concrete is examined. The limits of applicability of the analytical models are established depending on c/d ratio (i.e., the ratio of the thickness of the concrete cover to the diameter of a reinforcing bar). Secondly, inability of the analytical models to account for actual boundary conditions of corroding reinforcing bars is studied. It is found that the influence of the boundary conditions on the predictive ability of the analytical models may be very significant. The FE analysis is also employed to investigate the influence of different types of concrete cover failure: cracking and delamination. The failure conditions in terms of ratios between certain geometrical parameters of a RC section have been established. The efficiency of the analytical models to describe different types of cover failure has been discussed.

M3 - Conference contribution

SN - 9780957326309

SP - 1505

EP - 1517

BT - Concrete in the low carbon era

A2 - Jones, Rod

A2 - Newlands, Moray D

A2 - Halliday, Judith E

A2 - Csetenyi, Laszlo J

A2 - Zheng, Li

A2 - McCarthy, Michael

A2 - Dyer, Thomas

PB - University of Dundee

T2 - 8th International Conference: Concrete in the Low Carbon Era

Y2 - 9 July 2012 through 11 July 2012

ER -

Efficiency of modelling corrosion-induced cover cracking in RC structures

Abstract

Conference

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Research output

Concrete in the low carbon era: proceedings of the International Conference held at the University of Dundee, Scotland, UK on 9 - 11 July 2012

Cite this