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This paper proposes a new method of calculating the striking period of the reinforced concrete structure that is an alternative to current methods for calculating, direct and indirect, of the striking period (eg. resistance testing, adjustment methods to the current reality of concrete). At the same time adjusts or modify the calculating method of the striking period proposed by Benlloch (1996). For this, is done on the analysis of the evolution of the concrete characteristic tensile strength commonly used in building HA-30/B/20/ IIa and HA-25/B/20/IIa (categorized according to EHE-08). The data used are taken from a database composed of 67.785 compressive strength data, that through a statistician study and the equations specified by the Spanish Code on Structural Concrete of 2008 (EHE08), have obtained some equations and graphs to estimate the tensile strength evolution.

Métodos de cálculo indirectos del periodo de descimbrado a partir de la evolución de la resistencia del hormigón