Creep and Shrinkage of Self-Compacting Concrete with and without Fibers

Aslani, F; Nejadi, S

Creep and Shrinkage of Self-Compacting Concrete with and without Fibers

Aslani, F Nejadi, S

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Publication Type:: Journal Article
Citation:: Journal of Advanced Concrete Technology, 2013, 11 (10), pp. 251 - 265
Issue Date:: 2013-10-01

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Field	Value	Language
dc.contributor.author	Aslani, F	en_US
dc.contributor.author	Nejadi, S	en_US
dc.date.issued	2013-10-01	en_US
dc.identifier.citation	Journal of Advanced Concrete Technology, 2013, 11 (10), pp. 251 - 265	en_US
dc.identifier.issn	1346-8014	en_US
dc.identifier.uri	http://hdl.handle.net/10453/27232
dc.description.abstract	Fiber-reinforced self-compacting concrete (FRSCC) is a high-performance building material that combines positive aspects of fresh properties of self-compacting concrete (SCC) with improved characteristics of hardened concrete as a result of fiber addition. Considering these properties, the application ranges of both FRSCC and SCC can be covered. To produce SCC, either the constituent materials or the corresponding mix proportions may notably differ from the conventional concrete (CC). These modifications besides enhance the concrete fresh properties affect the hardened properties of the concrete including creep and shrinkage. Therefore, it is vital to investigate whether all the assumed hypotheses about conventional concrete are also valid for SCC structures. In the present paper, a numerical and experimental study about creep and shrinkage behavior of FRSCC and SCC is performed. Two new creep and shrinkage prediction models based on the comprehensive analysis on the available models of both CC and SCC are proposed for FRSCC and SCC structures. In order to evaluate the predictability of the proposed models, an experimental program was carried out. For this purpose, four SCC mixes - plain SCC, steel, polypropylene, and hybrid FRSCC - are considered in the test program. Several specimens were loaded and deformation in non-loaded specimens was also measured to assess shrinkage. All specimens were kept under constant stress during at least 364 days in a climatic chamber with temperature and relative humidity of 22°C and 50%, respectively. Results showed that the new models were able to predict deformations with good accuracy, although providing deformations slight overestimated. Copyright © 2013 Japan Concrete Institute.	en_US
dc.relation.ispartof	Journal of Advanced Concrete Technology	en_US
dc.relation.isbasedon	10.3151/jact.11.251	en_US
dc.subject.classification	Building & Construction	en_US
dc.title	Creep and Shrinkage of Self-Compacting Concrete with and without Fibers	en_US
dc.type	Journal Article
utslib.citation.volume	10	en_US
utslib.citation.volume	11	en_US
utslib.for	0905 Civil Engineering	en_US
pubs.embargo.period	Not known	en_US
pubs.organisational-group	/University of Technology Sydney
pubs.organisational-group	/University of Technology Sydney/Faculty of Engineering and Information Technology
pubs.organisational-group	/University of Technology Sydney/Faculty of Engineering and Information Technology/School of Civil and Environmental Engineering
pubs.organisational-group	/University of Technology Sydney/Strength - CBI - Centre for Built Infrastructure
utslib.copyright.status	open_access
pubs.issue	10	en_US
pubs.publication-status	Published	en_US
pubs.volume	11	en_US

Abstract:

Fiber-reinforced self-compacting concrete (FRSCC) is a high-performance building material that combines positive aspects of fresh properties of self-compacting concrete (SCC) with improved characteristics of hardened concrete as a result of fiber addition. Considering these properties, the application ranges of both FRSCC and SCC can be covered. To produce SCC, either the constituent materials or the corresponding mix proportions may notably differ from the conventional concrete (CC). These modifications besides enhance the concrete fresh properties affect the hardened properties of the concrete including creep and shrinkage. Therefore, it is vital to investigate whether all the assumed hypotheses about conventional concrete are also valid for SCC structures. In the present paper, a numerical and experimental study about creep and shrinkage behavior of FRSCC and SCC is performed. Two new creep and shrinkage prediction models based on the comprehensive analysis on the available models of both CC and SCC are proposed for FRSCC and SCC structures. In order to evaluate the predictability of the proposed models, an experimental program was carried out. For this purpose, four SCC mixes - plain SCC, steel, polypropylene, and hybrid FRSCC - are considered in the test program. Several specimens were loaded and deformation in non-loaded specimens was also measured to assess shrinkage. All specimens were kept under constant stress during at least 364 days in a climatic chamber with temperature and relative humidity of 22°C and 50%, respectively. Results showed that the new models were able to predict deformations with good accuracy, although providing deformations slight overestimated. Copyright © 2013 Japan Concrete Institute.

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http://hdl.handle.net/10453/27232