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
DOI:
10.14359/51732984
Date:
9/1/2021
Abstract:
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.
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