The impact of conformity control on the value of the reliability index

Abstract

The article presents the impact of conformity control on the value of the reliability index. The performed reliability analyses were related to the quality of C20 / 25 class concrete verified on the basis of the compliance criteria for a number of samples, n = 3 and n = 15. It was found, that the type of concrete conformity criteria significantly influences the value of the reliability index, especially for the low number of samples n. The level of reliability for concrete construction decreases when the conformity control is carried out for the number of sample n = 3. In any case of doubts concerning the quality of C20 / 25 building concrete, the influence of conformity control for number sample n = 3 should be taken into account, especially the case when the concrete is produced with a standard deviation greater than 4.0 MPa.