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Characterization of Concrete by a Multiscale Approach



Title: Characterization of Concrete by a Multiscale Approach
Author(s): P. Wriggers, S. Löhnert
Paper category : conference
Book title: International RILEM Conference on Material Science
Editor(s): W. Brameshuber
Print-ISBN: 978-2-35158-108-7
e-ISBN: 978-2-35158-109-4
Publisher: RILEM Publications SARL
Publication year: 2010
Pages: 3 - 12
Total Pages: 10
Nb references: 31
Language: English


Abstract: In this paper different length scales that are needed to set up a multiscale model for concrete are introduced and modeled. Basically three scales are considered: the microscale, being the cement paste, the mesoscale, being the mortar, and a macroscale, being the heterogenous material concrete. At each scale a homogenization process is performed in order to obtain the constituive models for the next scale. The three-dimensional geometrical models for the cement past, the mortar and the concrete are either taken from CT-scan or they are generated taking the random structure of aggregates into consideration. The generation process is based upon Monte Carlo’s simulation method wherein the aggregate particles are generated from a certain aggregate size distribution. The model for cement paste.is upscaled to model pores within a hydrated cement paste (HCP) where the effective constitutive equations of the cement paste will be used to describe macro cracking in the HCP phase with pores.


Online publication: 2010-12-02
Publication type : full_text
Public price (Euros): 0.00