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Please use this identifier to cite or link to this item: http://repository.iitr.ac.in/handle/123456789/15599
Title: Residual strength and deformation characteristics of confined concrete subjected to elevated temperature
Authors: Sharma U.K.
Zaidi K.A.
Bhargava P.
Bhandari N.M.
Published in: Proceedings of 9th US National and 10th Canadian Conference on Earthquake Engineering 2010, Including Papers from the 4th International Tsunami Symposium
Abstract: The objective of this study is to gain the insight of the strength and deformability of confined concrete after exposure to a thermal cycle at high temperature. In this context, an experimental program was designed and carried out to study the residual compressive stress-strain behavior of confined concrete at elevated temperatures ranging from room temperature to 800°C. The experimental variables were exposure temperature, concrete strength, amount of confining reinforcement and yield strength of transverse confining steel. A total of 108 unconfined and confined cylindrical specimens of size 150 mm × 450 mm were cast and tested. The effects of various key variables of confinement were studied and quantified with respect to strength and ductility gains. The residual strength, strain corresponding to the peak load and post-peak strains of confined concrete are not affected significantly up to an exposure temperature of 300°C. However, the peak load falls and corresponding strains increase considerably in the temperature range of 400 to 800°C. It was observed that increasing the exposure temperature makes the stress-strain curve of confined concrete flatter. Furthermore, the larger the degree of confinement reinforcement, the greater the residual strength and deformability of confined concrete.
Citation: Proceedings of 9th US National and 10th Canadian Conference on Earthquake Engineering 2010, Including Papers from the 4th International Tsunami Symposium, (2010), 2178- 2187. Toronto, ON
URI: http://repository.iitr.ac.in/handle/123456789/15599
Issue Date: 2010
Keywords: Concrete strength
Confined concrete
Cylindrical specimens
Degree of confinement
Elevated temperature
Experimental program
Exposure temperature
High temperature
Key variables
Peak load
Post-peak
Residual strength
Room temperature
Stress-strain behaviors
Temperature range
Thermal cycle
Civil engineering
Engineering geology
Reinforcement
Strain
Stress-strain curves
Tsunamis
Deformation
ISBN: 9781617388446
Author Scopus IDs: 57214359120
6602738926
14068541600
7103395363
Author Affiliations: Sharma, U.K., Department of Civil Engineering, Indian Institute of Technology, Roorkee - 247 667, India
Zaidi, K.A., Department of Civil Engineering, Indian Institute of Technology, Roorkee - 247 667, India
Bhargava, P., Department of Civil Engineering, Indian Institute of Technology, Roorkee - 247 667, India
Bhandari, N.M., Department of Civil Engineering, Indian Institute of Technology, Roorkee - 247 667, India
Corresponding Author: Sharma, U.K.; Department of Civil Engineering, Indian Institute of Technology, Roorkee - 247 667, India
Appears in Collections:Conference Publications [CE]

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