Studies of the Interfacial Properties of Fiber Reinforced Cement

by S. P. Shah, Northwestern Univ, Evanston, United States,
Z. Li, Northwestern Univ, Evanston, United States,



Document Type: Proceeding Paper

Part of: Mechanics Computing in 1990's and Beyond

Abstract:

The multiple fiber pull-out tests were conducted with steel wires and alkali resistant glass fiber strand in order to characterize the behavior of interface of fiber and cementitious matrix. Type I portland cement paste was used as a matrix. The specimens were tested with different curing regime. A simple method based on a recently developed fiber debonding and pull-out model was used to identify and evaluate the parameters at interface. The experimental data are presented on the parameter of shear stiffness of a fiber-matrix boundary layer, the shear bond strength, the frictional bond strength and the interfacial specific surface energy as a function of fiber embedded length.

Subject Headings: Fabrics | Fiber reinforced composites | Pullout behavior | Cement | Bonding | Shear strength | Surface properties

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