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Prediction of stress development and cracking in steel fiber-reinforced self-compacting concrete overlays due to restrained shrinkage
Betongindustri AB.
Luleå University of Technology, Department of Civil, Environmental and Natural Resources Engineering, Structural and Construction Engineering.
2010 (English)In: Fiber-Reinforced Self-Consolidating Concrete: Research and Applications, American Concrete Institute, 2010, 31-49 p.Conference paper (Refereed)
Abstract [en]

Shrinkage cracking of self-compacting concrete (SCC) overlays with and without steel fibres has been assessed through laboratory testing and theoretical analysis. Test results verified that steel fibre reinforcement has a crack width limiting effect. However, the contribution in case of fibre contents up to 0.75 vol% was not found to be sufficient to distribute cracks in situations where bond to the substrate was nonexistent. Thus, even higher steel fibre contents (or other types of fibres) are required in order to control cracks. A distributed pattern of fine cracks was however obtained even for unreinforced SCC within bonded areas of the overlays. This implies that steel fibres, or other crack reinforcement, are not required if high bond strength is obtained. An analytical model, proposed to assess the risk of cracking and to predict crack widths in overlays, was found to give reasonable correlation with experimental results

Place, publisher, year, edition, pages
American Concrete Institute, 2010. 31-49 p.
, SP, 274
Research subject
Structural Engineering
URN: urn:nbn:se:ltu:diva-39876Local ID: ecb912ea-996b-4b31-b848-9efbf34ddd5fISBN: 9780870313981 (PDF)OAI: diva2:1013395
ACI Fall 2009 Convention : 08/11/2009 - 12/11/2009
Godkänd; 2010; 20111205 (ysko)Available from: 2016-10-03 Created: 2016-10-03Bibliographically approved

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