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Title: Shear Strength of Concrete with Recycled Aggregates Reinforced with Steel Fibers

Author(s): Juliana Trindade, Sergio Luis Garcia, and Humberto Torres

Publication: Materials Journal

Volume: 118

Issue: 5

Appears on pages(s): 185-198

Keywords: push-off test; recycled aggregates; shear; steel fibers

Date: 9/1/2021

This study investigated the friction shear behavior of concrete consisting of recycled aggregates and natural reinforced steel fibers. The concrete’s natural aggregates were 50% substituted for recycled ones. The addition of steel fibers was evaluated in two different percentages in volume: 0.5 and 1.0%. Thus, 27 non-cracked push-off specimens were produced. The recycled aggregates were separated into two groups according to the strength of the original concrete: Group 1 (15 to 20 MPa) and Group 2 (35 to 40 MPa). Data analysis showed that the concrete’s original strength and steel fiber percentage influenced the shear transfer capacity. Experimental data from natural concrete (NC) and high-strength concrete (HSC) with steel fibers tests performed using the push-off model and shear test methods were recompiled from the technical literature. Using models proposed by some researchers, it was concluded that both methods showed high dispersion in results.


Electronic Materials Journal


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