FIBER-REINFORCED CONCRETE CASK, SUPPORTING FRAME FOR MOLDING THEREOF AND PROCESS FOR PRODUCING THE CONCRETE CASK

摘要

A fiber-reinforced concrete cask that ensures easy working, enables reducing working cost, excels in strength, durability and heat resistance and enables minimizing cracking; a process for producing the same; and a supporting frame for molding the concrete cask. In particular, concrete cask (10) formed through casting and solidification of concrete (11) characterized in that sheets of reinforcement fibers having a thermal expansion coefficient equal to or lower than that of concrete (11) are provided on at least the outer circumferential side and inner perimeter side of the concrete cask (10) and that the inner perimeter surface of outside sheet (21) and the outer circumferential surface of inside sheet (22) are coupled with each other by strings of reinforcement fibers (23). Preferably, carbon fibers are used as the reinforcement fibers.