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Permeability of high strength concrete with different fibers at high temperature



Title: Permeability of high strength concrete with different fibers at high temperature
Author(s): Mitsuo Ozawa, Dantas Rafael Lustoza, Hiroaki Morimoto and Takayuki Fumoto
Paper category : conference
Book title: 2nd International RILEM Workshop on Concrete Spalling due to Fire Exposure
Editor(s): E.A.B. Koenders and F. Dehn
ISBN: 978-2-35158-118-6
e-ISBN: 978-2-35158-119-3
Publisher: RILEM Publications SARL
Publication year: 2011
Pages: 281 - 288
Total Pages: 8
Nb references: 7
Language: English


Abstract: This paper presents the results of permeability testing on preheated high-strength concrete treated with different types of fiber. The concrete specimens used had a water-cement ratio of 0.30 (fc ≈ 75 MPa) and dimensions of 50 mm in diameter and 50 mm in length. The fibers used were water soluble polyvinyl alcohol (WS-PVA) fibers (length: 4 mm; volume content:
0.15vol%), Jute fibers(length: 12 mm; volume content: 0.075vol%) and polypropylene (PP) fibers(length: 12 mm; volume content: 0.15vol%). The permeability tests were performed on the specimens at 200 and 500°C, and significant differences in the permeability of the heated concrete were observed. The permeability of PP fiber-mixed concrete after heating to 500°C was about 12 times higher than before heating, that of WS-PVA fiber-mixed concrete was about 4 times higher, and that of Jute fiber-mixed concrete was about 3.5 times higher.


Online publication: 2012-01-17
Publication type : full_text
Public price (Euros): 0.00