In the field of non destructive testing of concrete structures, several regulations propose correlations between cubic compressive strength and ultrasonic pulse velocity or pull out extraction force respectively. These correlations are expressed by means of coefficients derived from calibration through destructive tests carried out on cores. Aiming at evaluating the reliability of correlations in predicting concrete compressive strength, an experimental campaign has been started. Several concrete cubic specimens of different strength classes have been prepared and non destructive tested. Moreover, 16 cores have been extracted from the cubic specimens and ultrasonic and compressive tests have been carried out on them. Ultrasonic testing has been performed on both cubic specimens and cores in order to assess the influence of specimen form and dimension on the ultrasonic waves propagation. In this paper results of the experimental campaign are presented and discussed.

In situ evaluation of concrete compressive strength: reliability of non destructive techniques

DE NICOLO, BARBARA;TRULLI, NICOLETTA;VALDES, MONICA
2013

Abstract

In the field of non destructive testing of concrete structures, several regulations propose correlations between cubic compressive strength and ultrasonic pulse velocity or pull out extraction force respectively. These correlations are expressed by means of coefficients derived from calibration through destructive tests carried out on cores. Aiming at evaluating the reliability of correlations in predicting concrete compressive strength, an experimental campaign has been started. Several concrete cubic specimens of different strength classes have been prepared and non destructive tested. Moreover, 16 cores have been extracted from the cubic specimens and ultrasonic and compressive tests have been carried out on them. Ultrasonic testing has been performed on both cubic specimens and cores in order to assess the influence of specimen form and dimension on the ultrasonic waves propagation. In this paper results of the experimental campaign are presented and discussed.
File in questo prodotto:
Non ci sono file associati a questo prodotto.

I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.

Utilizza questo identificativo per citare o creare un link a questo documento: http://hdl.handle.net/11584/107695
 Attenzione

Attenzione! I dati visualizzati non sono stati sottoposti a validazione da parte dell'ateneo

Citazioni
  • ???jsp.display-item.citation.pmc??? ND
  • Scopus ND
  • ???jsp.display-item.citation.isi??? ND
social impact