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Numerical modeling of drying shrinkage deformation of cement-based composites by coupling multiscale structure model with 3D lattice analyses

Liu, L; Wang, X; Chen, H; Wan, C; Zhang, M; (2017) Numerical modeling of drying shrinkage deformation of cement-based composites by coupling multiscale structure model with 3D lattice analyses. Computers & Structures , 178 pp. 88-104. 10.1016/j.compstruc.2016.10.005. Green open access

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Abstract

This paper presents a multiscale model for the drying shrinkage deformation of cement-based composites by incorporating its corresponding multiscale computer-generated structure at different scales in a three-dimensional lattice model. Assuming effects of capillary tension and disjoining pressure are the reason for the drying deformation, water desorption in capillary pores within 100%-to-85% RH range and that in gel pores within 85%-to-50% RH range are investigated. Drying behaviors of C-S-H gels, cement paste and mortar are studied by gradual upscaling. Experimental results for cement paste and mortar are utilized for validation. Parameter-determination and parameter-passing associated with the multiscale model are discussed.

Type: Article
Title: Numerical modeling of drying shrinkage deformation of cement-based composites by coupling multiscale structure model with 3D lattice analyses
Open access status: An open access version is available from UCL Discovery
DOI: 10.1016/j.compstruc.2016.10.005
Publisher version: http://doi.org/10.1016/j.compstruc.2016.10.005
Language: English
Additional information: © 2016 Elsevier Ltd. All rights reserved. This manuscript version is made available under a Creative Commons Attribution Non-commercial Non-derivative 4.0 International license (CC BY-NC-ND 4.0). This license allows you to share, copy, distribute and transmit the work for personal and non-commercial use providing author and publisher attribution is clearly stated. Further details about CC BY licenses are available at http://creativecommons.org/ licenses/by/4.0. Access may be initially restricted by the publisher.
Keywords: Drying shrinkage; Water desorption; Multiscale model; Lattice analysis; Capillary pressure
UCL classification: UCL
UCL > Provost and Vice Provost Offices
UCL > Provost and Vice Provost Offices > UCL BEAMS
UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Engineering Science
UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Engineering Science > Dept of Civil, Environ and Geomatic Eng
URI: https://discovery.ucl.ac.uk/id/eprint/1522386
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