Nameˇˇ Kouta IWANO
Themeˇˇ Suggestion of the data handling method in Force Ductility Test
AdviserˇˇTakeshi NAKAMURA
The binder has been evaluated by a penetration test, ductility test, and a toughness-tenacity test until now. However, it is the present conditions that I cannot evaluate a viscoelastic difference and that test mechanism has a problem.
Based on this, I suggest Force Ductility Test (following, FDT) as a new evaluation method in the study of the past. As a test result, load-displacement curve is provided and calculates a, FD level. However, calculation methods were not unified in one in the past study. Based on this, I suggest a new FD level calculation method in imitation of the technique of the toughness tenacity test in this study. In the case of the calculation method that I suggested this time, the FD level showed a clear tendency and became easy to evaluate a binder property. In addition, it is thought that it was brought close to the result of the toughness-tenacity test because the FD level by the method that I suggested lowered than an FD level by the method of the last year. I was as FD level 800 or more with the standard value to be reusable as reproduction aggregate in the study of the last year, but must set the standard value newly this time because the calculation method of the FD level is different in last year and this study. From a result of the penetration and the relations of the FD level by the method that I suggested, I established the standard value to be reusable with higher than FD level 50 in this study newly.
As a result of having suggested an FD level calculation method in this study newly, It was better and was able to confirm the change of the property with the aging. In addition, In addition, because correlation was seen between an FD level and the fatigue destruction number of times like a study of the past, When I will find an FD level in future, as for the calculation method that I suggested, it is thought that it is effective.
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