Abstract
In this research, the authors used element test samples which modeled actual structures, to consider a quantitative method for evaluating the internal vibrator insertion intervals and compaction times necessary for concrete used in construction, based on the concrete compaction completion energy, using concrete slump as a parameter. The following conclusions were reached. The theoretical compaction completion ranges calculated from compaction energy were almost identical to the actual compaction completion ranges of elemental tests modeled on actual structures. It is difficult to evaluate the degree of compaction purely through visual evaluation of the cast condition of the form surface, and doing so is risky. In follow-up compaction, even if compaction time gets longer properly, quality does not have any problem.
