Utilizing polypropylene fibers to improve physical and mechanical properties of concrete

Bagherzadeh, Roohollah, Sadeghi, Abdol-Hossein and Latifi, Masoud 2012, Utilizing polypropylene fibers to improve physical and mechanical properties of concrete, Textile research journal, vol. 82, no. 1, pp. 88-96, doi: 10.1177/0040517511420767.

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Title Utilizing polypropylene fibers to improve physical and mechanical properties of concrete
Author(s) Bagherzadeh, Roohollah
Sadeghi, Abdol-Hossein
Latifi, Masoud
Journal name Textile research journal
Volume number 82
Issue number 1
Start page 88
End page 96
Total pages 9
Publisher Sage Publications
Place of publication London, England
Publication date 2012-01
ISSN 0040-5175
Keyword(s) fiber-reinforced concrete
mechanical properties
polypropylene fiber
Summary The influence of polypropylene fibers has been studied in different proportioning and fiber aspect ratios to improve physical and mechanical properties of fiber-reinforced concretes. Fibers are used in two different lengths (12 mm and 19 mm) and proportions (0.1% and 0.3%) in concrete mixture design. Hardened concrete properties, such as 7- and 28-day compressive strength, splitting tensile strength, flexural strength, water and air absorption, and restrained shrinkage cracking were evaluated.

No statistically significant effects were observed for polypropylene fibers on the compressive strength of concrete, while toughness indexes, splitting tensile and flexural strength and durability parameters showed an increase in the presence of polypropylene fibers. Increased fiber availability (fiber aspect ratio) in the concrete matrix, in addition to the ability of longer polypropylene fibers to bridge on the micro cracks, are suggested as the reasons for the enhancement in mechanical properties. Finally, crack width in fiber-reinforced concrete is calculated analytically with fiber property variables (fiber type, length, diameter and proportion). Results are compared with experimental values and concluded that with an increase in fiber length and/or decrease in fiber diameter crack width, decrease significantly.

Language eng
DOI 10.1177/0040517511420767
Field of Research 109999 Technology not elsewhere classified
Socio Economic Objective 970110 Expanding Knowledge in Technology
HERDC Research category C1 Refereed article in a scholarly journal
Copyright notice ©2011, The Author(s)
Persistent URL http://hdl.handle.net/10536/DRO/DU:30049624

Document type: Journal Article
Collections: Institute for Frontier Materials
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