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Free and restrained shrinkage behaviours of OPC and slag concretes with admixed polypropylene fibres
conference contribution
posted on 2008-01-01, 00:00 authored by T K Aly, J G Sanjayan, Frank CollinsFrank CollinsThis paper presents the results of an investigation that studied the effects of admixed polypropylene (PP) fibres on the long-term drying shrinkage of hardened concrete. Five concrete mixtures, made with 100% Ordinary Portland Cement (OPC) as the binder and containing different volume fractions of PP fibre (0%, 0.05%, 0.1%, 0.2% and 0.5%) were tested. Also, three concrete mixtures were made with 65 % slag-blended cement binder incorporating 0% and 0.2% volume fraction of PP. The results show higher water loss and higher drying shrinkages in concretes that incorporate PP fibres than concrete without fibre. The results of early age cracking tendency of slag concrete, with and without fibre, under fully restrained and drying conditions, show that that PP fibre concrete had higher cracking tendency than concrete without fibre. Higher cracking tendency of PP fibre concrete was due to higher drying shrinkage and elastic moduli.
History
Event
Structural Engineering and Construction. International Conference (4th : 2007 : Melbourne, Victoria)Volume
1Series
Innovations in Structural Engineering and ConstructionPagination
463 - 469Publisher
Taylor & FrancisLocation
Melbourne, VictoriaPlace of publication
London, Eng.Start date
2007-09-26End date
2007-09-28ISBN-13
9780415457552Language
engPublication classification
E Conference publication; E1.1 Full written paper - refereedCopyright notice
2008, Taylor & FrancisTitle of proceedings
ISEC-4 : Proceedings of 4th International Structural Engineering and Construction ConferenceUsage metrics
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