Correlations between non-destructive (UPV) and destructive tests of conventional concrete using high-early strength cement

Concrete quality, except in the laboratory, can be determined at the construction site. Therefore, the concept of non-destructive testing (NDT) is to obtain material properties “in place” respectively in construction site monitoring the structural health . There are different methods to assess concrete properties in situ, such as Non-destructive Testing (NDT) methods. Ultrasonic Pulse Velocity (UPV) is one of the most used NDT considering indirect and predicted tests to determine concrete quality in situ, whereas this test is affected by many parameters depending on the nature of materials used in production concrete. The main objective of this paper is to propose an appropriate simplified correlations for concretes made by local materials and for compressive strength levels reflecting the conditions and current practices on building sites in Kosovo. The specimens used in this study were made of concrete with varied cement content, water-cement ratios (w/c) and different coarse aggregate contents. The UPV measurement and compressive strength tests were carried out on concrete cubes at the age of 2 and 28 days. This study presents some correlations established between destructive and non-destructive test for better estimation of potential strength of concrete on site for conventional concrete using High-Early Strength Cement