Effect of matrix strength on pullout behavior of steel fiber reinforced very-high strength concrete composites

This paper presents the results of single-fiber pullout tests for deformed and smooth steel fibers embedded in the newly developed very-high strength concrete (VHSC) matrixes. The pullout test program involved four types of steel fibers, eight compressive strengths of VHSC matrixes, and two normal c...

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Bibliographic Details
Published in:Construction & building materials 2011, Vol.25 (1), p.39-46
Main Authors: Abu-Lebdeh, Taher, Hamoush, Sameer, Heard, William, Zornig, Brian
Format: Article
Language:English
Subjects:
Building materials
Concretes
Construction materials
Deformation
Fibers
Fibers–matrix bond
Interface
Matrix strength
Peak load
Pullout energy
Single-fiber test
Steel fibers
Strength
Strength of materials
Surface tension
Very-high strength concrete
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Summary:This paper presents the results of single-fiber pullout tests for deformed and smooth steel fibers embedded in the newly developed very-high strength concrete (VHSC) matrixes. The pullout test program involved four types of steel fibers, eight compressive strengths of VHSC matrixes, and two normal concrete strengths. Test results have shown that pullout behavior of different steel fiber reinforced VHSC composites is influenced by the matrix strength and fiber end condition (smooth, flat end, or hooked). Results reveal that both maximum pull-out load and total pullout energy increases as matrix strength increases for all deformed fibers that did not rupture. The test results also indicated that the increase in total pullout energy is more significant than that in peak load.
ISSN:0950-0618
1879-0526
DOI:10.1016/j.conbuildmat.2010.06.059