Consideration of Grain Size Distribution and Interfacial Transition Zone in the Prediction of Elastic Properties of Cementitious Composites
Part of the
book series (RILEM, volume 8)
The purpose of the current article is a micromechanical-based model predicting the elastic properties of cementitious composites exhibiting low elasticity moduli. The model is generalized to composites made of a matrix in which are embedded various spherical concentric inclusions of different radi and properties.
For a given type of aggregate, the grain size distribution is divided into 1 000 discrete elements which volume fractions are determined by linear interpolation.
The following input data needs to be known: the elastic properties, the volume fractions of each phase, and the grain size distribution of each aggregate type. The effective elastic properties of the composite are obtained thanks to a loop-type computation of the analytical model described in this article.
The direct application of this model allows a comparison between experimental and predicted elastic moduli of cement-based mortars made of natural sand and lightweight aggregates.
KeywordsGrain Size Distribution Representative Elementary Volume Cementitious Composite Interfacial Transition Zone Lightweight Aggregate
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.
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