Journal of Advanced Concrete Technology
Online ISSN : 1347-3913
ISSN-L : 1346-8014
Scientific paper
Investigations into Volumetric Stability of Aggregates and Shrinkage of Concrete as a Composite
Shingo AsamotoTetsuya IshidaKoichi Maekawa
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2008 Volume 6 Issue 1 Pages 77-90

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Abstract

The authors aim to quantitatively understand the influence of various aggregate properties on concrete shrinkage behavior based on both experimental and numerical approaches. The multi-scale constitutive model reveals that differences in aggregate Young's modulus cannot be solely responsible for the observed significant difference in corresponding shrinkage behavior of concrete. Hence, shrinkage of the aggregate itself is considered as a possibility and an aggregate shrinkage model that takes into account the surface area and the degree of aggregate saturation is proposed on the basis of earlier experimental results. The proposed model reasonably simulates the greatly varying different shrinkage behavior of concretes with various types of aggregates.

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© 2008 by Japan Concrete Institute
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