Experimental study of influence of synthetic fibres on behaviour of cylindrical high-strength concrete columns

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ConferenceCSCE 2008 Annual Conference: 10 June 2008, Quebec City, QC.
SubjectHigh performance / High strength concrete
AbstractThis paper presents an experimental study of the behaviour of fibre-reinforced high-strength concrete columns under concentric loading. Twelve cylindrical columns having a length of 1400 mm and a diameter of 300 mm were built using concrete containing different volumes of synthetic fibres. The effects of the amount of synthetic fibres, amount of transverse reinforcement, and concrete compressive strength on the load-carrying behaviour of confined concrete columns were investigated. The results showed that the use of synthetic fibres can help the confining reinforcement to increase the peak strength and deformation of confined concrete. In particular, the use of up to 1% synthetic fibres by volume of concrete increased the load and strain at concrete spalling by 3% and 17%, respectively, when compared to identical concrete columns without fibres. This same addition of synthetic fibres resulted in an increase in the maximum confined concrete strength and corresponding strain by 16% and 29%, respectively. Under very large concrete deformations, however, the synthetic fibres did not significantly influence the post-peak behaviour of these concrete columns. It is concluded that the use of synthetic fibres in high-strength concrete columns allows the columns to reach their ultimate load capacities with lower risks of premature spalling of the concrete cover, thus improving column durability and helping the confining steel to further increase the strength and ductility of confined concrete, especially in seismic areas.
Publication date
AffiliationNRC Institute for Research in Construction; National Research Council Canada
Peer reviewedYes
NRC number50310
NPARC number20377549
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Record identifierd898d480-be80-4dbe-a341-b18668783d92
Record created2012-07-24
Record modified2016-05-09
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