In Situ Strength vs. Potential Strength of Concrete: Proposal of a New Procedure for the Assessment of Excess Voidage

Concrete cores extracted from the same structural element may show variations in strength resulting a lack of homogeneity and grade compactness. This paper, while accounting for such variability, introduces new formulation to assess both situ potential characteristic concrete. The first part addresses Society report 11 on formulations introduced by author that considers coefficients take into account addition water cement mixer influence excess voidage. second describes case study procedures were applied an experimental campaign carried out two series cores. visual means method proposed is voidage assessment cores, computed axial tomography (CAT) scan allowing direct estimate percentage voids different sections series. Results noticeable within drilling. Moreover, can actual value strengths concrete with reasonable degree approximation. Finally, leads extremely precise results, making it possible evaluate core.