Multiscale diffusion–thermal–mechanical cohesive zone model for concrete

authored by: T. Wu, P. Wriggers
Abstract: The present work establishes a reliable model to describe the influence due to the interfacial transition zone (ITZ) between cement paste and aggregates on the mechanical, thermal and diffusion properties of concrete. The mesostructure of concrete consists of aggregates with a random distribution embedded in the cement paste as well as the interface elements with zero-thickness representing the ITZ. In this work, the cohesive zone model (CZM) is used to model the debonding at the ITZ between cement paste and aggregates. Furthermore, a traction-separation law in CZM combined with micromechanically motivated thermal flux-separation relation and diffusion flux-separation relation is developed, thus enabling to describe the temperature jump and humidity jump across the cohesive crack.
Organisation(s): Institute of Continuum Mechanics
External Organisation(s): Technische Universität Braunschweig
Type: Article
Journal: Computational mechanics
Volume: 55
Pages: 999-1016
No. of pages: 18
ISSN: 0178-7675
Publication date: 02.04.2015
Publication status: Published
Peer reviewed: Yes
ASJC Scopus subject areas: Computational Mechanics, Ocean Engineering, Mechanical Engineering, Computational Theory and Mathematics, Computational Mathematics, Applied Mathematics
Electronic version(s): https://doi.org/10.1007/s00466-015-1149-y (Access: Closed)
: Details in the research portal "Research@Leibniz University"

BibTeX

@article{7ad63c5dc305436c900a9c573fcd3293,
title = "Multiscale diffusion–thermal–mechanical cohesive zone model for concrete",
abstract = "The present work establishes a reliable model to describe the influence due to the interfacial transition zone (ITZ) between cement paste and aggregates on the mechanical, thermal and diffusion properties of concrete. The mesostructure of concrete consists of aggregates with a random distribution embedded in the cement paste as well as the interface elements with zero-thickness representing the ITZ. In this work, the cohesive zone model (CZM) is used to model the debonding at the ITZ between cement paste and aggregates. Furthermore, a traction-separation law in CZM combined with micromechanically motivated thermal flux-separation relation and diffusion flux-separation relation is developed, thus enabling to describe the temperature jump and humidity jump across the cohesive crack.",
keywords = "Cohesive zone model, Concrete, Coupling, Multiscale",
author = "T. Wu and P. Wriggers",
year = "2015",
month = apr,
day = "2",
doi = "10.1007/s00466-015-1149-y",
language = "English",
volume = "55",
pages = "999--1016",
journal = "Computational mechanics",
issn = "0178-7675",
publisher = "Springer Verlag",
number = "5",
}