Abstract
A test method for uniaxial tension test of concrete to obtain tension softening curves has not been established yet, because there are several difficulties in performing the test. In the past 40 years, many different test conditions, sometimes even completely opposite conditions have been adopted. In order to show which conditions should be selected and why the conditions should be selected, theoretical and experimental investigation was carried out. For the experiment, prismatic specimens with notches and an originally designed gear system preventing secondary flexure were adopted. It was shown that the tension softening curves were successfully monitored by the present procedure with a high success ratio. A practical test procedure of uniaxial tension test of concrete was proposed based on the investigation.
Résumé
La méthode d'examen de la tension uniaxiale du béton permenttant d'obtenir des courbes d'adoucissement de la tension n'a pas encore pu être établie en raison de plusieurs difficultés pour réaliser les tests. De nombreuses conditions différentes d'examen, même parfois complètement opposées, ont été adoptées depuis 40 ans. Pour montrer quelles conditions doivent être choisies parmi celles-ci et pourquoi elles doivent être choisies, une investigation thérique et expérimentale a été effectuée. Dans l'expérimentation, des échantillons prismatiques avec des encoches et un système d'engrenage originellement conçu pour éviter une flexion secondaire, ont été adoptés. Il a été montré que les courbes d'adoucissement de la tension étaient contrôlées avec succès par cette procédure avec un haut ratio de succès. Enfin une procédure d'examen pratique de la tension uniaxiale du béton basée sur l'investigation a été proposée.
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Akita, H., Koide, H., Tomon, M. et al. A practical method for uniaxial tension test of concrete. Mat. Struct. 36, 365–371 (2003). https://doi.org/10.1007/BF02481061
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DOI: https://doi.org/10.1007/BF02481061