Abstract
Prestressed concrete technology has revolutionized the infrastructure growth in many countries, especially that of the bridge sector. The bond between prestressed strand and concrete is very important for achieving good structural performance. However, some of the codal provisions have not given enough consideration to the bond strength of pretensioned concrete system in design. This paper presents the results from a preliminary experimental program on the bond strength of 7-wire strands embedded in M35 and M55 concretes. A pull-out test method was developed, and the same was used to determine the bond strength. The bond behavior and the mechanisms at the strand–concrete interface are also discussed. Bond strength of 7-wire strand in M55 concrete is found to be about two times more than that in M35 concrete.
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Acknowledgements
The authors thank Prof. Ravindra Gettu and Prof. Amlan K. Sengupta for their valuable suggestions. The authors thank the faculty and staff of the BTCM division, Department of Civil Engineering, IIT Madras, Chennai, India. The authors acknowledge the financial support through the “Fund for Improvement of Science & Technology Infrastructure (FIST)”, Department of Science and Technology (DST), and the Ministry of Human Resources Development (MHRD), Govt. of India.
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Mohandoss, P., Kompella, S.K., Pillai, R.G. (2019). Bond Performance of Pretensioned Concrete Systems. In: Rao, A., Ramanjaneyulu, K. (eds) Recent Advances in Structural Engineering, Volume 1. Lecture Notes in Civil Engineering , vol 11. Springer, Singapore. https://doi.org/10.1007/978-981-13-0362-3_22
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DOI: https://doi.org/10.1007/978-981-13-0362-3_22
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