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Bond-Slip Mechanisms in Steel Micro-Fiber Reinforced Cement Composites

Published online by Cambridge University Press:  21 February 2011

N. Banthia ,
N. Yan ,
C. Chan ,
C. Yan  and
A. Bentur
N. Banthia
Affiliation:
Dept. of Civil Eng., University British Columbia, Vancouver, B.C., Canada, V6T 1Z4
N. Yan
Affiliation:
Dept. of Civil Eng., University British Columbia, Vancouver, B.C., Canada, V6T 1Z4
C. Chan
Affiliation:
Dept. of Civil Eng., University British Columbia, Vancouver, B.C., Canada, V6T 1Z4
C. Yan
Affiliation:
Dept. of Civil Eng., University British Columbia, Vancouver, B.C., Canada, V6T 1Z4
A. Bentur
Affiliation:
National Building Research Institute, Technion, Israel Institute of Technology, Technion City, Haifa, 32000, Israel
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Abstract

Bond-slip characteristics for steel micro-fibers bonded in cement-based matrices were investigated by conducting single fiber pull-out tests. The influence of the following factors was investigated: fiber inclination, fiber size, fiber embedded length and matrix refinement using silica fume. It was found that the bond-slip characteristics of fibers aligned with respect to the loading direction were necessarily superior than those inclined at an angle. Inclined fibers supported smaller peak pull-out loads and absorbed lesser pull-out energies than the aligned fibers. The use of silica fume in the matrix was found to improve both the average interfacial bond strength and the maximum interfacial bond strength between the fiber and the matrix.

Keywords

fiber reinforced cementssteel micro-fibersbond-slippull-out testsinclined fibers
Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 370: Symposia Va/Vb – Microstructure of Cement-Based Systems/Bonding and Interfaces in Cement... , 1994 , 539
Copyright
Copyright © Materials Research Society 1995

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