Crack Response to Long-Term Environmental and Blast Vibration Effects
Publication: Journal of Geotechnical and Geoenvironmental Engineering
Volume 131, Issue 9
Abstract
This paper synthesizes seven case histories of micrometer changes in the width of cosmetic cracks in a wide range of wall materials and structure types produced by long term (environmental) and transient (blast vibration) effects. Long term crack response over periods of days to weeks is compared to changes in temperature and humidity. Transient crack response is compared to peak velocity ground motions and structural response. It was found that long term, weather-induced crack response can be more than 1 order of magnitude larger than that induced by noticeable ground motions of and that crack response correlates best with wall shear strains.
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Acknowledgments
Support of a large number of individuals and organizations was necessary for this project; their cooperation is deeply appreciated and gratefully acknowledged. The Infrastructure Technology Institute (ITI) at Northwestern University, directed by David Schulz, has supported development of Autonomous Crack Monitoring technology through a grant from the Department of Transportation. Two members of the ITI instrumentation staff, Daniel Marron and David Kosnik, played key roles in the development of the ACM hardware and software. Results not presented herein are chronicled in three Northwestern University MS theses by Damien Siebert, Michael Louis, and Laureen McKenna. Intensive instrumentation of the four “atypical” structures summarized herein was made possible through the cooperation of the Department of the Interior’s Office of Surface Mining (OSM) program to measure response of “atypical” structures. Ken Eltschlager, Dennis Clark, and Mike Rosenthal, as well as a number of representatives from supporting state agencies, provided extensive field support for the OSM program. Finally, without the fieldwork, instrumentation and sharing of data by Professor Cathy Aimone-Martin and Mary Alena Martell of the New Mexico Institute of Mining and Technology results presented herein would not exist.
References
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Information & Authors
Information
Published In
Journal of Geotechnical and Geoenvironmental Engineering
Volume 131 • Issue 9 • September 2005
Pages: 1151 - 1161
Copyright
© 2005 ASCE.
History
Received: Aug 23, 2002
Accepted: Apr 5, 2004
Published online: Sep 1, 2005
Published in print: Sep 2005
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