| Titre : | Comparison between two ultrasonic methods in their ability to monitor the setting process of cement pastes (2009) |
| Auteurs : | Gregor Trtnik, Auteur ; Marko Ivan Valič, Auteur ; Franci Kavčič, Auteur |
| Type de document : | Article : texte imprimé |
| Dans : | Cement and concrete research (Vol. 39 N° 10, Octobre 2009) |
| Article en page(s) : | pp. 876–882 |
| Note générale : | Génie Civil |
| Langues : | Anglais |
| Index. décimale : | 691 (Matériaux de construction. Pièces et parties composantes) |
| Tags : | Cement paste ; Hydration ; Ultrasonic wave transmission method ; reflection Setting |
| Résumé : | This paper presents the comparison between ultrasonic wave transmission (USWT) method and ultrasonic wave reflection (USWR) method in their ability to monitor the setting process of cement pastes. The velocity of ultrasonic longitudinal waves and shear wave reflection coefficient were measured simultaneously on cement pastes with different hydration kinetics. Even though both methods are able to reliably monitor the hydration process and formation of structure of an arbitrary cement paste, they monitor the setting process in different ways. The relationship between the velocity of longitudinal waves and shear wave reflection coefficient can be simplified into three characteristic phases and the end of the first phase can be used to define the beginning of the setting process of cement paste. |
| DEWEY : | 620.13 |
| ISSN : | 0008-8846 |
| En ligne : | http://www.sciencedirect.com/science/article/pii/S0008884609001537 |
