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Home > Publications > International Concrete Abstracts Portal
The International Concrete Abstracts Portal is an ACI led collaboration with leading technical organizations from within the international concrete industry and offers the most comprehensive collection of published concrete abstracts.
Title: Effect of Matrix Strength on Pullout Behavior of High-Strength Deformed Steel Fibers
Author(s): D. Joo Kim, S. El-Tawil, and A.E. Naaman
Publication: Special Publication
Appears on pages(s): 135-150
Keywords: equivalent bond strength, fiber pullout, matrix strength, pullout energy, and slip hardening.
Abstract:The effect of matrix strength (or composition) on the pullout behavior of high strength deformed steel fibers is investigated. High-strength steel hooked (H-) and twisted (T-) fiber are used in three different matrices with three different compositions generating a low (4.1 ksi [28 MPa]), medium (8.1 ksi [56 MPa]) and high (12.2 ksi [84 MPa]) compressive strength. Although both fibers produce a higher pullout load with a higher compressive strength matrix, T- fiber shows a more sensitive behavior to the matrix strength or composition than H- fiber. Moreover, T- fiber leads to significant enhancements in both pullout load and pullout energy in higher strength matrix than in lower strength matrix. It is observed that T- fiber is generally more efficient in a higher-strength matrix than in a lower-strength matrix.
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