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Bond Properties of Micro-Fibers in Cementitious Matrix

Published online by Cambridge University Press:  21 February 2011

Amnon Katz  and
Victor C. Li
Amnon Katz
Affiliation:
Advanced Civil Engineering Materials Research Laboratory Department of Civil and Environmental EngineeringUniversity of Michigan, MI 48105-2125, U.S.A.
Victor C. Li
Affiliation:
Advanced Civil Engineering Materials Research Laboratory Department of Civil and Environmental EngineeringUniversity of Michigan, MI 48105-2125, U.S.A.
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Abstract

Using a new technique for pullout test of microfibers, the interfacial bond properties of two carbon fibers having a diameter of 10 µm and 46 µm were tested and compared with those of high modulus polyethylene and steel fibers having a diameter of 42 µm and 18 µm, respectively. The fibers were embedded in cement matrices of different water to binder ratio and silica-fume content.

By studying the complete pullout load-pullout displacement curve and by using Environmental Scanning Electron Microscope (ESEM), it was found that the bond mechanism is mainly of friction for the fine and smooth carbon and polyethylene fibers. For the large carbon fiber and steel fiber, mechanical anchorage is the main bond mechanism.

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 , 529
Copyright
Copyright © Materials Research Society 1995

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References

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