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High strength and water impermeability of concrete as a function of surface area of aggregate

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Résumé

L'auteur expose une nouvelle méthode d'étude de la relation entre la granulométrie et la résistance du béton. Il s'applique à différents types d'agrégats. Cette relation repose sur un facteur de surface qui est la surface développée totale des particules contenues dans une livre d'agrégat. Étant donné que ce facteur interprète quantitativement le module de finesse, les formules ne comprennent que la quantité d'agrégat retenue par le tamis no 100. Les formules simples pour déterminer la surface développée d'une livre d'agrégat peuvent s'appliquer à tout béton de structure où entrent des agrégats de rivière, des pierres concassées ou des agrégats légers. Les formules sont accompagnées des premiers résultats expérimentaux qui les confirment et d'exemples numériques de leur application.

Summary

The author has developed a new approach for analyzing the relationship between aggregate gradation and strength of concrete. The method is applied to a number of different types of aggregate. This relationship is a surface area factor. The total surface area of all particles in one pound is defined as the “surface area factor”. Since this is a quantitative alternate for the fineness modulus the formulas include only the quantity of aggregate retained on the No. 100 sieve. Simple formulas are presented for the determination of the surface area of one pound of aggregate. These formulas are useful for any kind of structural concrete using river aggregate, crushed rock or lightweight aggregate. Preliminary experimental results are presented which support the formulas. Numerical examples illustrate the use of the formulas.

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Stamenkovic, H. High strength and water impermeability of concrete as a function of surface area of aggregate. Mat. Constr. 3, 91–98 (1970). https://doi.org/10.1007/BF02476263

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  • DOI: https://doi.org/10.1007/BF02476263

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