Publications / 1992 Proceedings of the 9th ISARC, Tokyo, Japan
Compacting the spread concrete with a self-powered vibrating roller is an essential feature of the RCD (Roller Compacted Dam-concrete) method of constructing a concrete gravity dam. It is an arduous task for the roller operator to remain seated on the roller not only because the working area is unusually extensive and wide, but also because he has to keep on repeating the same compacting cycle pattern. The number of compacting cycles, moreover, must be rigidly controlled to produce the required concrete quality. The automatic operation system introduced her operates the roller automatically and adjusts the number of compacting cycles under computerized control. This paper describes the system, its basic principle, the process of its development, and its current problems to be solved.