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

Yidong Gan; Hongzhi Zhang; Yu Zhang; Yading Xu; Erik Schlangen; Klaas van Breugel; Branko Šavija

doi:10.1016/j.ijfatigue.2021.106378

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

Yidong Gan^*, Hongzhi Zhang, Yu Zhang, Yading Xu, Erik Schlangen, Klaas van Breugel, Branko Šavija

^*Corresponding author for this work

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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.

Original language	English
Article number	106378
Pages (from-to)	1-13
Number of pages	13
Journal	International Journal of Fatigue
Volume	151
DOIs	https://doi.org/10.1016/j.ijfatigue.2021.106378
Publication status	Published - 2021

Keywords

Cement paste
Flexural fatigue
Micro-cantilever bending
SEM
Viscoelasticity

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10.1016/j.ijfatigue.2021.106378

1-s2.0-S0142112321002383-mainFinal published version, 11.3 MBLicence: CC BY

Cite this

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title = "Experimental study of flexural fatigue behaviour of cement paste at the microscale",

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.",

keywords = "Cement paste, Flexural fatigue, Micro-cantilever bending, SEM, Viscoelasticity",

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AU - Gan, Yidong

AU - Zhang, Hongzhi

AU - Zhang, Yu

AU - Xu, Yading

AU - Schlangen, Erik

AU - van Breugel, Klaas

AU - Šavija, Branko

PY - 2021

Y1 - 2021

N2 - 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.

AB - 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.

KW - Cement paste

KW - Flexural fatigue

KW - Micro-cantilever bending

KW - SEM

KW - Viscoelasticity

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M3 - Article

AN - SCOPUS:85105321049

SN - 0142-1123

VL - 151

SP - 1

EP - 13

JO - International Journal of Fatigue

JF - International Journal of Fatigue

M1 - 106378

ER -

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

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