Method for examining a solidified and/or hardening material using ultrasound, receptacle and ultrasound sensor for carrying out the method
The invention concerns the examination of a solidifying and/or hardening material, such as cement, concrete or the like, using ultrasound waves, emitted from an ultrasound transmitter to an ultrasound receiver, which penetrate the material and are continuously measured and analyzed. A method is desc...
Gespeichert in:
Hauptverfasser: | , , , , |
---|---|
Format: | Patent |
Sprache: | eng |
Online-Zugang: | Volltext bestellen |
Tags: |
Tag hinzufügen
Keine Tags, Fügen Sie den ersten Tag hinzu!
|
Zusammenfassung: | The invention concerns the examination of a solidifying and/or hardening material, such as cement, concrete or the like, using ultrasound waves, emitted from an ultrasound transmitter to an ultrasound receiver, which penetrate the material and are continuously measured and analyzed.
A method is described for examining a solidifying and/or hardening material such as cement, concrete or the like, using ultrasound waves emitted by an ultrasound transmitter, which penetrate the solidifying and/or hardening material, are continuously measured and analyzed. During solidification and/or hardening of the material, the signal shapes of the ultrasound waves penetrating the material, are recorded. The change with time of the compression wave velocity and/or the relative energy of the ultrasound waves and/or the frequency spectra of the ultrasound waves is extracted from the ultrasound wave shapes during the entire course of solidification and/or hardening of the material. This change with time of the compression wave velocity and/or the relative energy of the ultrasound waves and/or the frequency spectra of the ultrasound waves is approximated through a compensating function, preferably the Boltzmann function. The free parameters of the compensation function are associated with material properties and permit comparison of a current measurement with reference values of these parameters to permit determination of material properties of the examined material. A receptacle and an ultrasound transmitter for carrying out the method also are described. |
---|