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Preventive Effects of Fibers on Spalling of UFC at High Temperatures

Ozawa, Mitsuo / Bo, Zhou / Uchida, Yuichi / Morimoto, Hiroaki

This paper investigates the relationship between spalling behavior and weight loss for ultra-high-strength fiber-reinforced concrete (UFC) containing different types short fibers (jute, PP, WSPVA) in high-temperature environments at 400, 600 and 800 °C. The explosive spalling that occurred under these conditions caused severe damage to the control specimen but only slight damage to the specimen with jute fiber. It was therefore inferred that adding 0.19% by volume of natural jute fibers (length: 12 mm) to UFC is effective in the prevention of spalling-related damage.

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Preventive Effects of Fibers on Spalling of UFC at High Temperatures

Ozawa, Mitsuo / Bo, Zhou / Uchida, Yuichi / Morimoto, Hiroaki

This paper investigates the relationship between spalling behavior and weight loss for ultra-high-strength fiber-reinforced concrete (UFC) containing different types short fibers (jute, PP, WSPVA) in high-temperature environments at 400, 600 and 800 °C. The explosive spalling that occurred under these conditions caused severe damage to the control specimen but only slight damage to the specimen with jute fiber. It was therefore inferred that adding 0.19% by volume of natural jute fibers (length: 12 mm) to UFC is effective in the prevention of spalling-related damage.

Preventive Effects of Fibers on Spalling of UFC at High Temperatures

Ozawa, Mitsuo / Bo, Zhou / Uchida, Yuichi / Morimoto, Hiroaki

This paper investigates the relationship between spalling behavior and weight loss for ultra-high-strength fiber-reinforced concrete (UFC) containing different types short fibers (jute, PP, WSPVA) in high-temperature environments at 400, 600 and 800 °C. The explosive spalling that occurred under these conditions caused severe damage to the control specimen but only slight damage to the specimen with jute fiber. It was therefore inferred that adding 0.19% by volume of natural jute fibers (length: 12 mm) to UFC is effective in the prevention of spalling-related damage.

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Title:

Preventive Effects of Fibers on Spalling of UFC at High Temperatures

Contributors:

Ozawa, Mitsuo (author) / Bo, Zhou (author) / Uchida, Yuichi (author) / Morimoto, Hiroaki (author)

Published in:

Journal of Structural Fire Engineering ; 5 ; 229-238

Publication date:

2014-09-01

Size:

10 pages

ISSN:

DOI:

https://doi.org/10.1260/2040-2317.5.3.229

Type of media:

Article (Journal)

Type of material:

Electronic Resource

Language:

English

Keywords:

Ultra-high-strength fiber-reinforced concrete (UFC) , spalling , high temperature , natural fibers , synthetic fibers

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