Determining the Strength Characteristics of Concrete in Drilled Piles from Tests on Extracted Core Specimens

Abstract

A method is proposed for determining the "actual class" of concrete that is compliant with the requirements set forth in current regulatory documents and considers special aspects of the operation of drilled pile structures and the techniques for their installation. The method estimates strength variability, and in particular, for a large number of tests. Concrete class is determined from the results of destructive tests performed on specimens taken from a pile body. An approach is described that may be implemented during quality control of pile concrete that takes place at the construction site.