Abstract
Manufactures of the conventional reinforced concrete segment involved the application of heavy vibrating compaction to concrete with an extremely stiff consistency. Focusing on one of distinctive features of high flowing concrete, that is self-compacting into the steel form, the authors put into practice a new segment manufacturing system aimed at cost reduction through rationalization of manufacturing process by such means as omission of vibrating compaction and of surface finishing work on the back of the segment. This paper shows that the segments made of high flowing concrete proved to have an engineering performance equal to or better than the conventional one in various tests. It also describes the quality of this new type of segment under the condition of mass production.
