Toughening of Short Fiber Reinforced Xonotlite Composites by Muptiple Cracking

This paper presents experimental results of an attempt at developing xonotlite composites reinforced with polymeric short fibers. Emphasis has been placed on the development of design methodology for toughening the brittle matrix by multiple cracking phenomenon. The composite parameters examined in...

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Bibliographic Details
Published inInorganic Materials Vol. 3; no. 262; pp. 203 - 211
Main Authors HASHIDA, Toshiyuki, TSUTAMORI, Masanori, TAKAHASHI, Hideaki, WADA, Chiharu
Format Journal Article
LanguageJapanese
Published The Society of Inorganic Materials, Japan 1996
Subjects
Bending strength
Fiber bridging
Fracture energy
Multiple cracking
Short fiber composites
Xonotlite
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Summary:This paper presents experimental results of an attempt at developing xonotlite composites reinforced with polymeric short fibers. Emphasis has been placed on the development of design methodology for toughening the brittle matrix by multiple cracking phenomenon. The composite parameters examined in this study were fiber volume fraction, fiber dimensions, matrix properties and interface shear strength, and their effects on the strength and fracture energy of the composites were studied using five types of polymeric fibers. Low-temperature-plasma treatment and glass coating treatment were employed to modify interface properties. It is demonstrated that multiple cracking is useful to create pseudo-strain hardening behavior and to enhance both the strength and fracture energy. The maximum strength and fracture energy of the composite are shown to be higher than those of the plain matrix by factors of about 10 and 650, respectively. Based on the experimental results, a design diagram for pseudo-strain hardening induced by multiple cracking is proposed.
ISSN:2185-436X
DOI:10.11451/mukimate1994.3.203