品質管理・検査／評価・試験方法 (1)

[V-570] Evaluation test of finishing time by various sensors

*臺 哲義¹、樋口 正典¹、梶 貢一¹、松田 拓¹ (1. 三井住友建設株式会社)

Keywords:concrete, Finish, timing, sensor, Noncontact

The number of workers at construction sites is decreasing year by year, and is decreasing by almost 30% compared to the peak time. In addition, although the aging of the population has progressed and there are 30% of those 55 and over, those under 29 are around 10%. There are many areas that rely on the skills of experts in finishing concrete, etc., making it impossible to pass on such techniques. Therefore, we examined whether it is possible to judge quantitatively the concrete finishing time, which is considered to be often relied on by the skill of experts, by comparing the bleeding test and the penetration resistance value with various sensors.