Simulation of Nonlinear Corrosion Damage Process in Reinforced Concrete under Chloride Environment

ZHANG Qin, GUO Li

Abstract

Corrosion of rebar significantly affects the transfer path of chloride ions in concrete, and the penetration of chloride ions as well as the erosion of rebar in concrete are two nonlinear mutually strengthening and coupling processes. This paper proposed numerical methodologies to solve the nonlinear problem. An efficient iterative algorithm was established for simultaneously analyzing the penetrating process of chloride ions into concrete and the evolution of concrete damage, and was subsequently implemented and integrated into ABAQUS with user subroutine. Efficiency and reliability of the proposed method was certified with the test data from literatures. Numerical results clearly demonstrated that the coupling process between chloride ions penetration and concrete damage evolution greatly affected the assessment of the integrity of reinforced concrete structures. The developed method could give more comprehensive evaluation of the service life of reinforced concrete structure, and provide new guidelines for the durability analysis of concrete structures under marine environment.

 

 

Keywords: durability,  corrosion damage,  chloride ion erosion,  coupling analysis


Full Text:

PDF


References


SHI Jinjie. SUN Wei. Recent research on steel corrosion in concrete [J]. Journal of Chinese Ceramic Society. 2010.38(9): 1753 —1764. (In Chinese)

PANTAZOPOULOU S J. PAPOULIA К D. Modeling cover cracking due to reinforcement corrosion in R. C. structures [J]. Journal of Engineering Mechanics. 2001. 127( 4 ): 342 — 351.

NOGHABAI K. Environment effects on bond in reinforced concrete structures[C]// Durability of Building Materials and Components 7: Proceedings of an International Conference. Stockholm: Taylor and Francis Group. 1996r605 — 614.

MOLINA F J. ALONSO C. ANDRADE C. Cover cracking as a function of rebar corrosion: Part ||—Numerical model [J]. Materialsand Structures. 1993. 26(9) :532 —548.

TAKEWAKA K. MASTUMOTO S. Quality and cover thickness of concrete based on the estimation of chloride penetration in marine environments[C]// International Conference on Performance of Concrete in Marine Environment. Canada: ACI Special Publication. 1988:381— 400.

ZHAO Y X. YU J. JIN W L. Critical thickness of rust layer at inner and out surface cracking of concrete cover in reinforced concrete structures [J]. Corrosion Science. 2012. 59: 316 — 323.

MU Song. LIU Jianzhong. Review of chloride transport properties in concrete featured with different cracking characteristics [J]. Journal of Chinese Ceramic Society. 2015» 43(6) : 829 — 838. (In Chinese)

GERARD B. P1JAUDIER C G. LABORDERIE C. Coupled diffusion-damage modeling and the implications on failure due to strain localization [J]. International Journal of Solids and Structures. 1998. 35(31):4107 — 4120.

TEGGUER A D. BONNET S. KHELIDJ A, et al. Effect of uniaxial compressive loading on gas permeability and chloride diffusion coefficient of concrete and their relationship [J] Ce-ment and Concrete Research. 2013. 52( 10) ; 131 — 139.

MU S. SCHUTTER G D, MA BG. Non-steady state chloride diffusion in concrete with different crack densitiesL [J]. Materials and Structures,2013, 46(1)s123—133.

ZHANG J, CHEUNG M M S. Modeling of chloride-induced corrosion in reinforced concrete structures [J]. Materials and Structures. 2013. 46(4) ;573 — 586.

MUTHULINGAM S. RAO B N. Non-uniform corrosion states of rebar in concrete under chloride environment [J]. Corrosion Science» 2015. 93( 1): 267 — 282.


Refbacks

  • There are currently no refbacks.