Although concrete clogging has been a problem in the Tokai area, blockage of the actual situation is unclear. Therefore, the purpose of this study is to reveal the actual situation of concrete clogging in Tokai area. We conducted a questionnaire survey about actual situation of concrete clogging of pumping constructors in Tokai area. As a result, this paper showed actual situation about such as pipeline and position when concrete clogging has occurred. Also, this paper elucidated that pumping constructors have recognized that quality of concrete is a problem.
