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Postcrack creep of polymeric fiber-reinforced concrete in flexure

Kurtz, S. / Balaguru, P.

Results of an experimental investigation of the creep-time behavior of polypropylene and nylon fiber-reinforced concrete (FRC) are presented. Gravity loads were applied in flexure to precracked low volume fraction (0.1%) polypropylene and nylon FRC beams. Beams were tested at a range of stress levels to produce three outcomes: load sustained indefinitely (low stress), creep failure (intermediate stress), and rapid failure (high stress). Emphasis was placed on determining the maximum flexural stress that is sustainable indefinitely. The results indicate that polypropylene FRC has higher initial strength but nylon FRC can sustain a higher stress level. For both groups the sustainable stress is much lower than the postcrack strength.

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Postcrack creep of polymeric fiber-reinforced concrete in flexure

Kurtz, S. / Balaguru, P.

Results of an experimental investigation of the creep-time behavior of polypropylene and nylon fiber-reinforced concrete (FRC) are presented. Gravity loads were applied in flexure to precracked low volume fraction (0.1%) polypropylene and nylon FRC beams. Beams were tested at a range of stress levels to produce three outcomes: load sustained indefinitely (low stress), creep failure (intermediate stress), and rapid failure (high stress). Emphasis was placed on determining the maximum flexural stress that is sustainable indefinitely. The results indicate that polypropylene FRC has higher initial strength but nylon FRC can sustain a higher stress level. For both groups the sustainable stress is much lower than the postcrack strength.

Postcrack creep of polymeric fiber-reinforced concrete in flexure

Kurtz, S. / Balaguru, P.

Results of an experimental investigation of the creep-time behavior of polypropylene and nylon fiber-reinforced concrete (FRC) are presented. Gravity loads were applied in flexure to precracked low volume fraction (0.1%) polypropylene and nylon FRC beams. Beams were tested at a range of stress levels to produce three outcomes: load sustained indefinitely (low stress), creep failure (intermediate stress), and rapid failure (high stress). Emphasis was placed on determining the maximum flexural stress that is sustainable indefinitely. The results indicate that polypropylene FRC has higher initial strength but nylon FRC can sustain a higher stress level. For both groups the sustainable stress is much lower than the postcrack strength.

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Title:

Postcrack creep of polymeric fiber-reinforced concrete in flexure

Contributors:

Kurtz, S. (author) / Balaguru, P. (author)

Published in:

Cement and Concrete Research ; 30 ; 183-190

Publication date:

2000

Size:

8 Seiten, 18 Quellen

ISSN:

DOI:

https://doi.org/10.1016/S0008-8846(99)00228-8

Type of media:

Article (Journal)

Type of material:

Print

Language:

English

Keywords:

faserverstärkter Werkstoff , Nylon , Gehalt (Zusammensetzung) , Polypropylen , Kriechen (Werkstoff) , Biegebeanspruchung , Biegespannung , organische Faser , Polypropylenfaser , faserverstärkter Zement , Faserbeton , Volumenfraktion

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