Abstract
In recent years, the concern about the quality of lining concrete is increasing taking advantage of the crash accident of concrete. On the other hand, we thought that it is important to raise the construction nature for the improvement in quality of concrete lining. And we thought it is important to clarify the construction characteristic of the placing on consolidated fresh concrete.
From the above viewpoints, firstly, experimental study was carried out about the time of the placing on the consolidated fresh concrete and the influence of the different mixes on the characteristic of the placing on consolidated fresh concrete. Secondly, the optimal construction method of concrete lining was proposed.
