Fundamental study on evaluation method for alkali-resistance of fibers

Taketo Uomoto, Futoshi Katsuki

Research output: Contribution to journalArticle

6 Citations (Scopus)

Abstract

In order to utilize Glass, Aramid and Carbon fibers as a reinforced material of concrete, alkali-resistance of each fiber was tested and computational model predicting the degragation of fiber was verified based on the experiments for alkali-resistance of fibers. Alkali-resistance of each fiber was compared from the view point of fracture strength and Young's modulus through the accelerated aging test in the alkaline solution. In addition, the degree of degradation of each fiber after aging test was investigated by Scanning Electron Microscope. As a result, it was concluded: (1) Glass fiber was easily degradated in the alkaline solution and the progress of degradation was stimulated quantitatively by the proposed method based on a diffusion theory, (2) both Aramid and Carbon fiber had a significant alkali-resistance without degragating.

Original languageEnglish
Pages (from-to)167-174
Number of pages8
JournalDoboku Gakkai Rombun-Hokokushu/Proceedings of the Japan Society of Civil Engineers
Issue number490 pt 5-23
Publication statusPublished - 1994
Externally publishedYes

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Fibers
Aramid fibers
Glass fibers
Carbon fibers
Aging of materials
Degradation
Fracture toughness
Electron microscopes
Elastic moduli
Concretes
Scanning
Experiments

ASJC Scopus subject areas

  • Engineering(all)

Cite this

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AU - Katsuki, Futoshi

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AB - In order to utilize Glass, Aramid and Carbon fibers as a reinforced material of concrete, alkali-resistance of each fiber was tested and computational model predicting the degragation of fiber was verified based on the experiments for alkali-resistance of fibers. Alkali-resistance of each fiber was compared from the view point of fracture strength and Young's modulus through the accelerated aging test in the alkaline solution. In addition, the degree of degradation of each fiber after aging test was investigated by Scanning Electron Microscope. As a result, it was concluded: (1) Glass fiber was easily degradated in the alkaline solution and the progress of degradation was stimulated quantitatively by the proposed method based on a diffusion theory, (2) both Aramid and Carbon fiber had a significant alkali-resistance without degragating.

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