| Titre : | Determination of time-zero and its effect on autogenous deformation evolution (2011) |
| Auteurs : | Aveline Darquennes, Auteur ; Stéphanie Staquet, Auteur ; Bernard Espion, Auteur |
| Type de document : | Article : texte imprimé |
| Dans : | European journal of environmental and civil engineering (Vol. 15 N° 7, Août 2011) |
| Article en page(s) : | pp. 1017-1029 |
| Note générale : | Génie Civil |
| Langues : | Anglais |
| Index. décimale : | 624 (Constructions du génie civil et du bâtiment. Infrastructures. Ouvrages en terres. Fondations. Tunnels. Ponts et charpentes) |
| Tags : | Kelly-Bryant method Setting Shrinkage Slag cement Resistivity Ultrasonic wave |
| Résumé : | The aim of this study is the determination of time-zero, a reference time from which the autogenous deformation is expressed, and the effect of this choice on the evolution of autogeneous deformation of concretes with different slag proportions (0 and 71%). The determination of time-zero is based on the setting evolution measured by means of several experimental methods (mechanical, electrical and ultrasonic). Autogenous deformation is also measured with a new shrinkage testing set-up developed at the Université Libre de Bruxelles. Following the experimental results it appears that a time-zero equal to the final setting is the most adequate choice for classic concretes. For slag cement concretes, characterized by an expansion of their cement matrix at early age, time-zero should be taken equal to the time of the expansion peak. |
| DEWEY : | 624 |
| ISSN : | 1964-8189 |
| En ligne : | http://ejece.revuesonline.com/article.jsp?articleId=16504 |
