Open Access

ABSTRACT

Determination of the Size Effect Law with One-Size Concrete Specimens of Different Notch Depths

by H. Cifuentes¹, F. Medina²

1 Grupo de Estructuras, Esc. Tec. Sup. de Ingenieros de Sevilla. Spain.
2 Grupo de Estructuras, Esc. Tec. Sup. de Ingenieros de Sevilla. Spain.

The International Conference on Computational & Experimental Engineering and Sciences 2008, 7(4), 197-202. https://doi.org/10.3970/icces.2008.007.197

Abstract

The most popular expression that considers the size effect showed in concrete structures is the size effect law of Bazant. This law depends on two coefficients G_f and c_f. For the experimental determination of these coefficients is necessary obtaining the ultimate loads, in three points bending tests, of notched beams with different sizes. In this work, a method to determine the coefficients about the results on identical beams varying the deep of the notch, is presented. The necessary values of loads are obtained by a numerical analysis with FEM that considers non linear behaviour of the concrete material. Next the proposed method is applied to experimental results of concrete specimens with different relative notch depth.

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