Abstract
In the present study, the problem of sedimentation occurring to the hign slump concrete is discussed. Such a phenomenon is comparatively rare in the low slump concrete, but in the case of high slump concrete sedimentation is rather conspicuous. The contents of the study first deals with the experiments of this phenomenon of cement paste, then with the evaluation of the mortar is used, and lastly tried to find out what kind of mixing proportion encourages sedimentation of high slump conrete, by pursuing both theoretically and experimentally. Thus, comparison is made between both calculated and experimented values of the sedimentation rate of high slump concrete, we can obtain a fairly good agreement with both values.
