Open Access

ARTICLE

Experimental and Numerical Analysis of High-Strength Concrete Beams Including Steel Fibers and Large-Particle Recycled Coarse Aggregates

by Chunyang Liu^1,2,*, Yangyang Wu¹, Yingqi Gao¹, Zhenyun Tang³

1 Department of Civil Engineering, Shandong Jianzhu University, Jinan, 250101, China
2 Key Laboratory of Building Structural Retrofitting and Underground Space Engineering, Shandong Jianzhu University, Ministry of Education, Jinan, 250101, China
3 Beijing Key Laboratory of Earthquake Engineering and Structural Retrofit, Beijing University of Technology, Beijing, 100124, China

* Corresponding Author: Chunyang Liu. Email:

Fluid Dynamics & Materials Processing 2021, 17(5), 947-958. https://doi.org/10.32604/fdmp.2021.016283

Received 23 February 2021; Accepted 29 April 2021; Issue published 05 July 2021

Abstract

In order to study the performances of high-strength concrete beams including steel fibers and large-particle recycled aggregates, four different beams have been designed, tested experimentally and simulated numerically. As varying parameters, the replacement rates of recycled coarse aggregates and CFRP (carbon fiber reinforced polymer) sheets have been considered. The failure mode of these beams, related load deflection curves, stirrup strain and shear capacity have been determined through monotonic loading tests. The simulations have been conducted using the ABAQUS finite element software. The results show that the shear failure mode of recycled concrete beams is similar to that of ordinary concrete beams. The shear carrying capacity of high-strength concrete beams including steel fibers and large-particle recycled coarse aggregates grows with an increase in the replacement rate of recycled coarse aggregates. Reinforcement with CFRP sheets can significantly improve the beam’s shear carrying capacity and overall resistance to deformation.

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Keywords

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