MEASUREMENT OF ACCELERATION PROPAGATED INTO FRESH CONCRETE DURING PLACING IN THE MOCK-UP FORM USING ONSITE VIBRATOR

Abstract

Most of the previous studies on the propagation of acceleration inside fresh concrete have measured the acceleration in the filled sample or from outside the formwork, and there have been few cases where the acceleration of fresh concrete in flow during the compaction process has been measured. In this study, the acceleration on fresh concrete during compaction in mock up form was measured. With the measurement system developed in this experiment, the acceleration propagating inside the fresh concrete was able to measure on several places of the position at the same time and the existence of acceleration damping could be quantitatively determined. It was also found that the acceleration propagated into the concrete from the onsite vibrator was independent of the value of slump.