PREVENTIVE EFFECTS OF NATURAL FIBERS ON HIGH-STRENGTH CONCRETE SPALLING AT HIGH TEMPERATURES

• OZAWA Mitsuo

  群馬大学 理工学研究院環境創生部門

• MORIMOTO Hiroaki

  岐阜大学 工学部社会基盤工学科

Bibliographic Information

Other Title

• 高温環境下における天然繊維を添加した高強度コンクリートの爆裂抑制効果

Abstract

 We investigated the relationship between the spalling behavior and internal vapor pressure of high strength concrete (HSC) with natural fiber when heated. The concrete specimens had a water-cement ratio of 0.30 (f_c ≈ 70 MPa). The fibers used were natural jute fiber and PP fiber. The length of the jute and was 12 mm and its addition rates were 0.075% and 0.15% by volume, respectively. The HSC specimens were heated and their internal temperature and vapor pressure were then measured. Explosive spalling did not occur in the jute specimens.

Journal

• Journal of Japan Society of Civil Engineers, Ser. E2 (Materials and Concrete Structures)

  Journal of Japan Society of Civil Engineers, Ser. E2 (Materials and Concrete Structures) 69 (3), 324-336, 2013

  Japan Society of Civil Engineers

Keywords

• jute fiber
• straw structure
• fire
• explosive spalling
• heating test

Details

• CRID: 1390282680333015936
• NII Article ID: 130004962057
• DOI: 10.2208/jscejmcs.69.324
• ISSN: 21856567
• Text Lang: ja
• Data Source:
  • JaLC
  • Crossref
  • CiNii Articles
  • KAKEN
• Abstract License Flag: Disallowed