Analytical Study of Mechanism of Concrete Cracking and Its Propagation Due to Corrosion of Reinforcement in RCC
- 1 M. Tech Structure, College of Engineering Pune, Pune, India
- 2 Department of Civil Engineering, College of Engineering Pune, Pune, India
Abstract
The experimental results which were carried out by different researchers on corrosion of RCC beam were validated in ABAQUS. A finite element (FE) model similar to experimental condition was generated in ABAQUS. The model with different percentages of corrosion and with varying load conditions was also generated. The deflections of RCC beam for different corrosion percentages and for varying load conditions were then validated. The model is then used to explore the effects of bar radial expansion, due to formation of corrosion products, on the cracking of cover concrete. The predictions are compared with tests results from reinforced concrete accelerated corrosion specimens. The aim of the analytical investigation was to reveal the mechanism for the development of concrete cracking due to corrosion of reinforcement. Further the finite element model will be used to explain qualitatively the experimentally determined relationship between amount of corrosion for concrete cracking and ratio of concrete cover to bar diameter, as well as that between reinforcement bond strength and amount of corrosion.
- Hsu, L.S. and Hsu, C.-T.T. (1994) Complete Stress-Strain Behaviour of High-Strength Concrete under Compression. Magazine of Concrete Research, 46, 301-312. http://dx.doi.org/10.1680/macr.1994.46.169.301
- Nayal, R. and Rasheed, H.A. (2006) Tension Stiffening Model for Concrete Beams Reinforced with Steel and FRP Bars. Journal of Materials in Civil Engineering, 18, 831-841. http://dx.doi.org/10.1061/(ASCE)0899-1561(2006)18:6(831)
- Lubliner, J., Oliver, J., Oller, S. and Oñate, E. (1989) A Plastic-Damage Model for Concrete. International Journal of Solids and Structures, 25, 299-329. http://dx.doi.org/10.1016/0020-7683(89)90050-4
- Castel, A., Franfois, R. and Arliguie, G. (2000) Mechanical Behavior of Corroded Reinforced Concrete Beams. Materials and Structures, 33, 539-544. http://dx.doi.org/10.1007/BF02480533
- Azher, S.A. (2005) A Prediction Model for the Residual Flexural Strength of corroded Reinforced Concrete Beam. Ph.D. Thesis, King Fahd University of Petroleum and Minerals, Saudi Arabia.
- Ballim, Y. and Reid, J. (2003) Reinforcement Corrosion and the Deflection of RC Beams: An Experimental Critique of Current Test Methods. Cement and Concrete Composites, 25, 625-632. http://dx.doi.org/10.1016/S0958-9465(02)00076-8
- Broomfield, J.P. (1997) Corrosion of Steel in Concrete: Understand Investigation and Repair. E & FN Spon, London. http://dx.doi.org/10.4324/9780203414606
- Cabrera, J.G. and Ghoddoussi, P. (2001) The Effect of Reinforcement Corrosion on the Strength of the Steel/Concrete Bond. International Conference on Bond in Concrete, 11-24.
- Li, C.Q. and Zheng, J.J. (2005) Propagation of Reinforcement Corrosion in Concrete and Its Effects on Structural Deterioration. Magazine of Concrete Research, .57, 261-271. http://dx.doi.org/10.1680/macr.2005.57.5.261
- Coronelli, D. and Gambarova, P. (2004) Structural Assessment of Corroded Reinforced Concrete Beams: Modeling Guidelines. Journal of Structural Engineering, 130, 1214-1224. http://dx.doi.org/10.1061/(ASCE)0733-9445(2004)130:8(1214)
- Eyre, J.R. and Nokhasteh, M.A. (1992) Strength Assessment of Corrosion Damaged Reinforced Slabs and Beams. Institution Civil Engineers, Structures and Buildings, 94, 197-203. http://dx.doi.org/10.1680/istbu.1992.18788
- O’Flaherty, F.J., Mangat, P.S., Lambert, P. and Browne, E.H. (2008) Effect of Under-Reinforcement on the Flexural Strength of Corroded Beams. Materials and Structures, 41, 311-321. http://dx.doi.org/10.1617/s11527-007-9241-1