Comparative analysis between models estimate concrete compressive strength applied to concrete of background slab of drydock in the Rio Grande maritime complex

Abstract

Due to the variability of the concrete strength, it is fundamental to use statistical methodologies to establish the parameters for the concrete structures acceptance. The utilization of a large number of strength test results is very important to the validation and calibration of the existing standard codes and technical specifications. In this study a comparative analysis of methodologies to estimate the characteristic compressive strength of concrete was made. The tests results obtained during the construction of the dry dock in the Rio Grande Maritime Complex were used to carry out the comparison of the estimates of the concrete characteristic strength as defined by NBR 12655 [6], ACI 214R-02 [1] and NP-EN-206-1 [9].