Abstract

This paper investigated the effects of fiber clustering on fatigue behavior of steel-fiber-reinforced concrete (SFRC) beams with reinforcements by experimental and numerical analysis. The steel fiber volume fractions of beams were 0 vol%, 0.5 vol%, 1.0 vol%, and 1.5 vol%. One beam was tested under static loading, and eight beams under fatigue loading with different stress levels. Moreover, the fiber distribution in the cross section of concrete was experimentally characterized to understand the underlying mechanism. The results indicated that the fatigue life of beam increased with increasing fiber volume fraction from 0 to 1.0 vol% and decreased from 1.0 vol% to 1.5 vol% due to a significant amount of fiber clusters for the beam with 1.5 vol% fiber volume fraction and thus resulted in the decreased fatigue performance of the beam. Based on the statistical results of fiber distance distribution in the concrete section, fiber clustering was considered in the concrete damaged plasticity model in ABAQUS to simulate the crack patterns of SFRC beam and validated by the experimental results.

Department(s)

Civil, Architectural and Environmental Engineering

Publication Status

Full Text Access

Comments

National Natural Science Foundation of China, Grant U1704254

Keywords and Phrases

Concrete damaged plasticity model; Fatigue behavior; Fiber clustering; Steel-fiber-reinforced concrete beam

International Standard Serial Number (ISSN)

0950-0618

Document Type

Article - Journal

Document Version

Citation

File Type

text

Language(s)

English

Rights

© 2024 Elsevier, All rights reserved.

Publication Date

27 Sep 2021

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