Abstract
The compaction for fresh concrete is very important work to control the quality of the RC structures. However, the judgments for compaction interval and time are often left to workers in the construction site, and therefore the compaction control is not performed enough. The main factor for this problem is that the quantitative controlling method for compaction effect by the internal vibrator is not yet established.
In this paper, the authors suggest an easy and real time controlling method for compaction effect of the fresh concrete using the acceleration of the internal vibrator. This method can estimate viscosity, compaction range, compaction time for fresh concrete simultaneously with compaction work. As a result of comparison between the estimation and experimental value, the effectiveness of this method was confirmed.
