Modeling bond components of deformed steel fibers in FRC composites

Title: Modeling bond components of deformed steel fibers in FRC composites
Author(s): C. Sujivorakul
Paper category : conference
Book title: International Workshop High Performance Fiber Reinforced Cement Composites
Editor(s): A. E. Naaman and H. W. Reinhardt
Print-ISBN: 2-912143-38-1
e-ISBN: 2912143799
Publisher: RILEM Publications SARL
Publication year: 2003
Pages: 35 - 48
Total Pages: 14
Nb references: 12
Language: English

Abstract: The bond between fibers and matrix is recognized as a key parameter to develop high performance fiber reinforced cement composites (HPFRCCs). A single fiber pullout test, whereby a fiber is pulled out from a cement matrix, is generally used to evaluate the bond between the fiber and the matrix. The pullout response of smooth steel fibers is basically affected by the two interfacial bond properties, namely adhesion and friction. In the case of deformed and non-straight steel fibers, the mechanical component of bond is present due to the particular geometry of the fiber. This paper appraises some useful models to predict the bond components as well as the pullout response of some commercially available deformed steel fibers. Also in the paper, a new micromechanical model for twisted polygonal steel fibers is introduced briefly. Twisted polygonal fibers are newly developed steel fibers, which are polygonal in cross section and twisted along their length. The predictions from the new model are compared with the experimental results, and good agreement was observed.

Online publication: 2003-04-28
Publication type : abstract_only
Public price (Euros): 0.00