Study on bond behaviour of corroded reinforced concrete beam – finite element analysis

Abstract

Present work contains a 3-D finite element (FE) model created in Abaqus to examine bond behavior in controlled/non-corroded reinforced concrete beams. Study evaluated the compatibility between corrosion levels and beam deflections. Cohesive surface-based interaction method is applied to the Data obtained from recent studies in which corrosion was induced by accelerated corrosion technique. The cohesive surface-based interaction approach has been found to be suitable for simulating the interfacial binding between reinforcement bars and the concrete. Analysis of Control and corroded beams along with mesh sensitivity were used for the validation of the work. It is found that maintaining uniform mesh size for steel and concrete is necessary as varying mesh size influences the load – deflection relation. The developed FE model of RC beam under corrosion could be adopted to obtain the load at failure with considerable accuracy. Hence, the model can be adopted to numerically simulate the influence of various parameters on response of corroded RC beams. This would avoid the expensive laboratorial tests. Study demonstrated that experimental and analytical research are in good agreement with considered level of corrosion and corresponding deflections. Rebar yield capacity of corroded RC beam in tension zone declined, resulting in a decrease in load-carrying capability. The modelling outcomes can be used to validate the bond behaviour of Reinforced concrete cantilever beams without considering the influence of stirrups.

Keywords:

• Concrete
• corrosion
• bond degradation
• finite element analysis (FEA)

REVIEWING EDITOR:

• Ai Qingsong, Senior Editor, Wuhan University of Technology, CHINA

SUBJECTS:

• Technology
• Engineering & Technology
• Civil, Environmental and Geotechnical Engineering
• Concrete & Cement
• Marine and Offshore Structures
• Structural Engineering

Disclosure statement

No potential conflict of interest was reported by the author(s).

Additional information

Notes on contributors

Aishwarya Lakshmi

Aishwarya Lakshmi received her Master of Technology in Construction Technology from NMAM Institute of Technology, Nitte, India. She is currently pursuing her Ph.D in Department of Civil Engineering, Manipal Institute of Technology, Manipal Academy of Higher Education, Manipal, India. Her research interests include concrete technology, durability of concrete structures.

Poornachandra Pandit

Poornachandra Pandit received his Master of Technology in Structural Engineering and Ph.D from National Institute of Technology, Surathkal, Karnataka, India. Presently he is working as an Assistant Professor Senior scale in the department of Civil Engineering, Manipal Institute of Technology, Manipal Academy of Higher Education, Manipal, India. His research interests include concrete technology, Reinforcement corrosion, Finite Element Modeling, Durability of concrete structure, Structural engineering, Corrosion of Alkali Activated Concrete, Durability of Alkali Activated Concrete and Effect of temperature on Alkali Activated Concrete. Currently he has been guiding 6 PhD Students. He has published several papers in reputed journals and conferences.

Arun Kumar Y.M.

Arun Kumar Y. M. received his Master of Technology in Structural Engineering and pursuing Ph.D in Department of Civil Engineering, Manipal Institute of Technology, Manipal Academy of Higher Education, Manipal, India Presently he is working as an Assistant Professor Senior scale in the department of Civil Engineering, Manipal Institute of Technology, Manipal Academy of Higher Education, Manipal, India. His research interests include Soil structure interaction, Finite Element modeling, Structural engineering, Pile foundation.

Yamuna Bhagwat

Yamuna Bhagwat received her Master of Technology in Structural Engineering from KLE DR. M. S. Sheshgiri College of Engineering and Technology, Belagavi, India. She is currently pursuing her Ph.D in Department of Civil Engineering, Manipal Institute of Technology, Manipal Academy of Higher Education, Manipal, India. Her research interests include concrete technology, durability of concrete structures, structural analysis, artificial intelligence and optimization algorithms.

Gopinath Nayak

Gopinatha Nayak received his Master of Technology in Structural Engineering and Ph.D from National Institute of Technology, Surathkal, Karnataka, India. Presently he is working as a Professor in the department of Civil Engineering, Manipal Institute of Technology, Manipal Academy of Higher Education, Manipal, India. He has published several papers in reputed journals and conferences. Currently he has been guiding 9 Ph.D students. His research interests include concrete technology, recycling plastic wastes, Durability of concrete structure, Structural engineering.

Amogh Shetty

Amogh Shetty received his Master degree in Structural Engineering from Department of Civil Engineering, Manipal Institute of Technology, Manipal Academy of Higher Education, Manipal, India. His research area includes Corrosion of RC beams, Finite Element modeling.