Imposed Deformations in Concrete: Case Study of an Underground Car Park
Publication: Journal of Materials in Civil Engineering
Volume 24, Issue 12
Abstract
The displacements produced by imposed deformations in buildings are usually compensated for with expansion joints. A field study was conducted in an underground parking facility with large jointless modules to measure the effects of shrinkage and temperature. The advantage of on-site measurements is the possibility to capture the combined effects of different imposed deformations that are usually studied individually in laboratory experiments. This article describes the instrumentation and monitoring procedures, displays and analyzes the registered data, and discusses the obtained results. Ambient and structural temperatures as well as displacements were recorded. Measuring commenced during the initial construction phase and was maintained throughout a period of five years. The measured longitudinal displacements were exclusively caused by shrinkage and temperature, and these displacements were not hindered by structural monolithicity.
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Acknowledgments
The present work was funded by the Ministry of Public Works and Transport. It was only possible to establish and execute the instrumentation through the thorough support from the contractor DRAGADOS and the consulting company FHECOR. DataTaker and Instrumentos de Medida SL provided instruments and significant support. The writers wish to thank Jose Torrico for his valuable input throughout this study, as well as Servando Sierra, of DRAGADOS, for his assistance in equipment installation.
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Information & Authors
Information
Published In
Journal of Materials in Civil Engineering
Volume 24 • Issue 12 • December 2012
Pages: 1513 - 1519
Copyright
© 2012 American Society of Civil Engineers.
History
Received: Aug 16, 2011
Accepted: Apr 18, 2012
Published online: Apr 20, 2012
Published in print: Dec 1, 2012
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