Long-term performance of bonded concrete overlays subjected to differential shrinkage

 

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dc.contributor.advisor Alexander, Mark Gavin en_ZA
dc.contributor.author Beushausen, Hans-Dieter en_ZA
dc.date.accessioned 2014-07-31T10:29:21Z
dc.date.available 2014-07-31T10:29:21Z
dc.date.issued 2005 en_ZA
dc.identifier.citation Beushausen, H. 2005. Long-term performance of bonded concrete overlays subjected to differential shrinkage. University of Cape Town. en_ZA
dc.identifier.uri http://hdl.handle.net/11427/5050
dc.description Includes bibliographical references (leaves 231-243).
dc.description.abstract The performance of bonded concrete overlays relates mainly to the resistance against cracking and debonding. The associated failure mechanisms are largely a result of differential volume changes between substrate and overlay. The objective of this research was to develop analytical tools to facilitate the design of bonded overlays subjected to differential shrinkage. The experimental programme included the identification of fundamental strain characteristics and bond strength development of composite members in relation to different interface textures and overlay materials. Existing analytical models for the prediction of strains and stresses in bonded overlays were evaluated. Results from the experimental work indicated that existing models, which are based on simple beam theory, are deficient in modelling overlay strains in a realistic manner. The degree of overlay restraint was found to depend far less on relative sectional dimensions of substrate and overlay as commonly assumed. Based on fundamental aspects concerning strain characteristrics of bonded overlays identified through experimental tests and numerical simulations, an analytical prediction model was developed based on localised strain conditions at the interface. en_ZA
dc.language.iso eng en_ZA
dc.subject.other Civil Engineering en_ZA
dc.title Long-term performance of bonded concrete overlays subjected to differential shrinkage en_ZA
dc.type Thesis / Dissertation en_ZA
uct.type.publication Research en_ZA
uct.type.resource Thesis en_ZA
dc.publisher.institution University of Cape Town
dc.publisher.faculty Faculty of Engineering & the Built Environment en_ZA
dc.publisher.department Department of Civil Engineering en_ZA
dc.type.qualificationlevel Doctoral en_ZA
dc.type.qualificationname PhD en_ZA
uct.type.filetype Text
uct.type.filetype Image


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