%0 Journal Article
%T ANALYSIS OF THE INFLUENCE OF TRANSDUCER FREQUENCY ON THE ULTRASONIC MEASUREMENT OF CONCRETE HOMOGENEITY
%A Barbora Jindrov¨¢
%A Dalibor Koc¨¢b
%A Martin Alexa
%A Petr Mis¨¢k
%A Tom¨¢£¿ Vymazal
%J -
%D 2019
%X The paper analyses the influence of transducer frequency on the determination of concrete homogeneity using the ultrasonic pulse velocity test. Transit time measurements were made on a 590¡Á590mm concrete slab, with 110mm in thickness, in a raster of 5¡Á5 points, which means the slab was tested in 25 places. The tests were made using a Pundit PL-200 ultrasonic tester using transducers set at 54, 82, and 150 kHz. Two types of measurements were performed ¨C spot measurements of the ultrasonic pulse transit time at each point and full area scanning. The paper is concluded by an evaluation of the concrete slab¡¯s homogeneity measured by different transducers and techniques in addition to a statistical analysis of how the results are affected by the transducer frequency
%K ultrasonic pulse velocity test
%K concrete
%K concrete homogeneity
%K transducer frequency
%U https://ojs.cvut.cz/ojs/index.php/APP/article/view/5649