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The Effect of Particle Size on Fracture Properties and Size Effect of Concrete.

Published online by Cambridge University Press:  01 February 2011

Erik Schlangen ,
Heng Soon Lim  and
Jaap Weerheijm
Erik Schlangen
Affiliation:
Delft University of Technology, CiTG, Microlab, P.O. Box 5048, 2600 GA Delft, The Netherlandse.schlangen@citg.tudelft.nl
Heng Soon Lim
Affiliation:
Delft University of Technology, CiTG, Microlab, P.O. Box 5048, 2600 GA Delft, The Netherlandse.schlangen@citg.tudelft.nl
Jaap Weerheijm
Affiliation:
TNO Prins Maurits Laboratory, P.O. Box 45, 2280 AA Rijswijk, The Netherlands
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Abstract

In the study the effect of scaling the material structure on the fracture behaviour of concrete is investigated. Next to this the size effect of concrete fracture strength and fracture energy is studied. The fracture mechanism of concrete made with different size aggregates are tested numerically. A lattice type fracture model is adopted to simulate the fracture mechanisms in concrete. The heterogeneity of the concrete is implemented using a regular pattern of circular particles on top of the lattice of beams. The results obtained show that with the model a structural size effect is obtained, which his however partly an artefact of the model. Furthermore a dependency of strength, fracture energy and brittleness of the aggregate size is found.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 882: Symposium EE – Linking Length Scales in the Mechanical Behavior of Materials , 2005 , EE2.10
Copyright
Copyright © Materials Research Society 2005

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