IRUS Total

Analysis of autogenous shrinkage-induced microcracks in concrete from 3D images

File Description SizeFormat 
3D analysis of microcracks - accepted.pdfAccepted version3.04 MBAdobe PDFView/Open
Title: Analysis of autogenous shrinkage-induced microcracks in concrete from 3D images
Authors: Mac, M
Yio, MHN
Wong, H
Buenfeld, NR
Item Type: Journal Article
Abstract: A new image analysis procedure for quantifying microcracks from three-dimensional (3D) X-ray microCT images of concrete is presented. The method separates microcracks from air voids and aggregates by combining filtering and morphological operations. It was applied to study the effects of supplementary cementitious materials (SCMs) and curing age on autogenous shrinkage-induced microcracks in low w/b ratio concretes, and to determine the representative elementary volume (REV) for various properties of microcracks and air voids. Results showed that slag and silica fume significantly increased autogenous shrinkage and related microcracking. These SCMs increased volume fraction, width, length, dendritic density, anisotropy, and connectivity of microcracks, but decreased specific surface and tortuosity. Similar trends were observed with age. Comparison between 3D and 2D measurements was made. REV analysis showed that a sampling volume of ~20 × 20 × 25 mm3 is sufficient for characterising most parameters of autogenous shrinkage microcracks and air voids in concrete.
Issue Date: 1-Jun-2021
Date of Acceptance: 26-Feb-2021
URI: http://hdl.handle.net/10044/1/88378
DOI: 10.1016/j.cemconres.2021.106416
ISSN: 0008-8846
Publisher: Elsevier
Start Page: 1
End Page: 15
Journal / Book Title: Cement and Concrete Research
Volume: 144
Issue: 1
Copyright Statement: © 2021 Elsevier Ltd. All rights reserved. This manuscript is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International Licence http://creativecommons.org/licenses/by-nc-nd/4.0/
Sponsor/Funder: Commission of the European Communities
Ecole Polytechnique Federation de Lausanne
Engineering & Physical Science Research Council (E
Funder's Grant Number: 264448
Keywords: Building & Construction
0904 Chemical Engineering
0905 Civil Engineering
1202 Building
Publication Status: Published
Article Number: 106416
Online Publication Date: 2021-03-05
Appears in Collections:Civil and Environmental Engineering

This item is licensed under a Creative Commons License Creative Commons