Journal Published Online: 20 March 2013
Volume 2, Issue 1

Effect of UV and UV–Ozone Treatment of Polyolefin Fibers on Toughness of Fiber Concrete Composite

CODEN: ACEMF9

Abstract

Ultraviolet (UV) irradiation and a combination of UV irradiation and ozone treatment of polyolefin fibers were investigated for possible improvement of mechanical properties in concrete composites. In both treatment methods, various fiber exposure durations were used, and surface modification was monitored by measuring the water contact angle. Untreated and treated fibers were added to concrete at 0.32 % by volume, and the specimens were tested for flexural strength according to ASTM International specifications. Fiber surface treatment by UV alone was found to be an unattractive technique based on the results of flexural tests and contact angle measurements. Ten minutes of UV and ozone surface treatment of fibers was found to improve the composite peak stress by 11 % and the toughness by 4 %; longer periods of exposure led to lower flexural strength results, perhaps as a result of fiber deformation or degradation.

Author Information

Payrow, Pouria
Nixaz Consulting, Toronto, ON, CA
Nokken, Michelle
Dept. of Building, Civil and Environmental Engineering, Concordia Univ., Montreal, QC, CA
Banu, Dorina
Nixaz Consulting, Toronto, ON, CA
Schmidt, Rolf
Dept. of Chemistry and Biochemistry, Concordia Univ., Montreal, QC, CA
DeWolf, Christine
Dept. of Chemistry and Biochemistry, Concordia Univ., Montreal, QC, CA
Feldman, Dorel
Dept. of Building, Civil and Environmental Engineering, Concordia Univ., Montreal, QC, CA
Pages: 11
Price: $25.00
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Details
Stock #: ACEM20120014
ISSN: 2165-3984
DOI: 10.1520/ACEM20120014