Hydrometer법에 의한 밀도 값과 시험 성적서간 상관분석을 통한 OPC의 품질 분석

This study analyzed whether the quality of ordinary Portland cement (OPC) delivered from local ready-mixed concrete plants could be evaluated through the correlation analysis of density values obtained by using the hydrometer method and its physical and chemical properties specified on the report. The result showed that there were issues in fineness and density specified in the report. It was assumed that such issues were caused by the precision of measuring instruments or inaccurate measuring practices in OPC factories