A Meso-Structure Analytical Model to Describe the Cracking Process due to Reinforcement Corrosion in Concrete Structure

Abstract:

The degradation of concrete structures due to steel reinforcement corrosion is a serious problem for durability and serviceability. Cracking behavior due to reinforcement corrosion is evaluated experimentally and analytically in this paper. In the experiments, in which corrosion was induced electronically, the structure proportion of corrosion product was analyzed. In the analysis, a micromechanical cracking mechanical analytic model, which considered the coupling effects of corrosion product and concrete protective layer was established. The initial cracks and crack growth process of smeared cracks in cover concrete were simulated and explored for the deterioration process of concrete structures due to corrosion expansion. It is indicated that the numerically predicted crack mode agrees well with the experimental results.

• Periodical: Applied Mechanics and Materials (Volumes 444-445)
• Pages: 956-960
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.444-445.956
• Online since: October 2013
• Authors: Yi Tang Zhou, Luo Ke Li, Peng Cao, Yi Na Wang
• Keywords: Corrosion, Digital Image Processing Technology, Erosion Fracture Coupling Model, Extended Finite Element Method (XFEM), Smeared Cracks

References

[1] Bazant Z P. Crack band model for fracture of geomaterials [C]. Edmonton: 4th International conference on Numerical Methods in Geomechanics, 1982, 3: 1137―1152.

[2] Zou Yu, Zhuang Zhuo, Huang Kezhi. The Solutions of axisymmetric plane stress for a hyperel astic material interference problem [J]. Engineering Mechanics, 2004, 21(6): 72―75. (in Chinese).

[3] Rybicki E F, Kannimen M F. A finite element calculation of stress intensity factors by a modified crack closure integral [ J]. Engineering Fracture Mechanics, 1977, 9: 931―938.

DOI: 10.1016/0013-7944(77)90013-3

[4] Rice J R. A Path independent Integral and the Approximate Analysis of Strain Concentration by Notches and Cracks [J]. Journal of App; ied Mechanics, 1968, 35: 379―386.

DOI: 10.1115/1.3601206

[5] Benzeggagh M L, Kenane M. Measurement of mixed -mode delamination fracture toughness of unidirectional glass/epoxy composites with mixed mode bending apparatus [J]. Composites Science andTechnology, 1996, 56(4): 439―449.

DOI: 10.1016/0266-3538(96)00005-x

[6] Wells G N, Sluys L J. A new method for modeling cohesive cracks using finite elements [J]. International Journal for Numerical Methods in Engineering, 2001, 50: 2667―2682.

DOI: 10.1002/nme.143

[7] Ameen M, Raghu B K, Gopalakrishnan A R. Modeling of Concrete Cracking—A Hybrid Technique of Using Displacement Discontinuity Element Method and Direct Boundary Element Method [J]. Engineering Fracture Mechanics, 2012, 35(9): 1054-1059.

DOI: 10.1016/j.enganabound.2011.03.009

[8] Wadkar A, Cleary D, Guo E. Load-transfer Efficiencies of Rigid Airfield Pavement Joints Based on Stresses and Deflections [J]. Journal of Maternials in Civil Engineering, 2011, 23(8): 1171-1179.

DOI: 10.1061/(asce)mt.1943-5533.0000288