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The estimation of compressive strength of normal and recycled aggregate concrete

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Author(s): Janković Ksenija | Nikolić Dragan | Bojović Dragan | Lončar Ljiljana | Romakov Zoran

Journal: Facta Universitatis Series : Architecture and Civil Engineering
ISSN 0354-4605

Volume: 9;
Issue: 3;
Start page: 419;
Date: 2011;
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Keywords: compressive strength | estimate strength of concrete | recycled aggregate

ABSTRACT
Estimation of concrete strength is an important issue in ready-mixed concrete industry, especially, in proportioning new mixtures and for the quality assurance of the concrete produced. In this article, on the basis of the existing experimental data of compressive strength of normal and recycled aggregate concrete and equation for compressive strength calculating given in Technical regulation are compared. The accuracies of prediction by experimental data obtained in laboratory as well as by EN 1992-1-1, ACI 209 and SRPS U.M1.048 are compared on the basis of the coefficient of determination. The determination of the compressive strengths by the equation described here relies on determination of type of cement and age of concrete with the constant curing temperature.
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