Study of Digital Air Meter Used Pressure Sensor for Air Content of Freshly Mixed Concretes

압력센서를 이용한 디지털 콘크리트 공기량 시험기 개발에 관한 연구

The purpose of this study is to develop digital air meter used pressure sensor for measurement of air content in freshly mixed concrete by pressure method. The digital air meter can enhanced measurement accuracy and uniformity of air content in freshly concretes, according to use of pressure sensor and measuring process automation. Finally, the digital air meter in this study is improved reproducibility and reliability of measurement compared with analog air meter.