In Situ Performance Testing of Deteriorating Water Tanks for Durability Assessment
Publication: Journal of Performance of Constructed Facilities
Volume 21, Issue 3
Abstract
Reports of failure of existing concrete structures due to a lack of durability, rather than a deficiency in structural strength, has made concrete technologists, engineers, and researchers focus research on the parameters influencing durability performance with respect to time. Systematic performance monitoring, with respect to chosen durability parameters of existing concrete structures, will decide the direction of future research in this area. Inferences based on laboratory simulations and testing need to be confirmed by in situ field measurements and studies. In situ condition rating and performance monitoring surveys have been conducted by many researchers, scientists, and professional associations, and reported in literature. Inferences of few such studies are summarized and discussed. Deterioration of concrete structures constructed in recent times is observed at relatively faster rates, and has been mainly attributed to cracking. Cracking is associated with the use of faster-hydrating portland cements with increased fineness and the tricalcium silicate content to support the high speed of modern construction. In the present research, a case study of deteriorated water tank structures situated in the semitropical region of India is presented. Some selected parameters—such as concrete cover, carbonation depth, chloride concentration, compressive strength, etc. which influence long term durability of structures—have been measured.
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Acknowledgments
The writers are thankful to All India Council of Technical Education, New Delhi, India for providing financial assistance through the research and development project entitled “Knowledge-Based Expert System for Evaluation of Residual Service Life and Repair Strategies for Concrete Structures.”
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Information & Authors
Information
Published In
Journal of Performance of Constructed Facilities
Volume 21 • Issue 3 • June 2007
Pages: 234 - 239
Copyright
© 2007 ASCE.
History
Received: Jan 31, 2006
Accepted: Jun 19, 2006
Published online: Jun 1, 2007
Published in print: Jun 2007
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