Experimental study of flexural fatigue behaviour of cement paste at the microscale

Journal article (2021)

Authors

Y. Gan Materials and Environment - CEG
Hongzhi Zhang Shandong University
Y. Zhang Transport and Planning - CEG
Y. Xu Materials and Environment - CEG
E. Schlangen Materials and Environment - CEG
K. van Breugel Materials and Environment - CEG
B. Šavija Materials and Environment - CEG
Research Group
Materials and Environment (CEG) (TU Delft)
Copyright: © 2021 Y. Gan, Hongzhi Zhang, Y. Zhang, Y. Xu, E. Schlangen, K. van Breugel, B. Šavija
DOI
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https://doi.org/10.1016/j.ijfatigue.2021.106378
SEM Cement paste Viscoelasticity Micro-cantilever bending Flexural fatigue
More Info
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Published Date

2021

Language

English

Faculty

Civil Engineering & Geosciences

Department

Materials- Mechanics- Management & Design

Research Group

Materials and Environment

Abstract

This study presents an experimental investigation of fatigue properties of cement paste at the microscale. A strong size dependence is found for the flexural fatigue life of the cement paste specimen. Microscopic observations on the fractured surfaces suggest that there is a higher density of nano-scale cracks generated during the fatigue loading compared to the static fracture. However, the fatigue damage evolution is found to be very slow and small even under high stress levels. The development of residual deformation for cement paste can be explained by the combined effects of viscoelastic deformation and fatigue cracking growth.