Fatigue life and cracking characterization of engineered cementitious composites (ECC) under flexural cyclic load

Journal article (2022)

Authors

Renjuan Sun Shandong University
Lebing Han Shandong Hi-Speed Engineering Test CO
Hongzhi Zhang Shandong University
Zhi Ge Shandong University
Yanhua Guan Shandong University
Yifeng Ling Shandong University
E. Schlangen Materials and Environment - CEG
B. Šavija Materials and Environment - CEG
Research Group
Materials and Environment (CEG) (TU Delft)
Copyright: © 2022 Renjuan Sun, Lebing Han, Hongzhi Zhang, Zhi Ge, Yanhua Guan, Yifeng Ling, E. Schlangen, B. Šavija
DOI: https://doi.org/10.1016/j.conbuildmat.2022.127465
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Published Date

2022

Language

English

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Faculty

Civil Engineering & Geosciences

Department

Materials- Mechanics- Management & Design

Research Group

Materials and Environment

Abstract

This paper presents a study on cracking characterization of engineered cementitious composites (ECC) under flexural cyclic load using digital image correlation (DIC) technique. Five stress levels, namely 0.65, 0.75, 0.8, 0.85 and 0.9 of the flexural strength, were applied. Strain map at the side surface was obtained by DIC and used to drive evolution of the midspan deflection, damage pattern, maximum crack width, number of cracks, and crack width distribution with respect to the normalized number of cycles. The stress level was found to have a significant influence on the cracking behavior of ECC under flexural cyclic load. Regardless of the applied stress level, most of the crack widths are in the range between 20 and 80 μm. In the end, a two-dimension Gauss function was used to correlate the crack width distribution with normalized number of cycle and shows satisfactory results.

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