시멘트 바이패스 분진 첨가에 따른 보통 포틀랜드 시멘트와 슬래그 시멘트의 물리특성 연구
Study on the Physical Properties of Ordinary Portland Cement and Slag Cement with the Addition of Cement Bypass Dust
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초록
시멘트 산업부산물로 발생하는 시멘트 바이패스 분진(CBPD)을 고화재 원료로써 활용 가능성 검토를 위하여, 보통 포틀랜드 시멘트(OPC) 및 슬래그 시멘트에 첨가하여 유동성 및 압축강도 등 물리특성 변화에 미치는 영향을 살펴보았다. CBPD 첨가량을 25%, 50%, 75%로 증가함에 따라서 유동성과 압축강도가 감소하지만 슬래그 시멘트에서의 감소 폭이 OPC와 비교하여 상대적으로 작음을 확인하였다. CBPD 첨가량 25% 조건에서 7일 압축강도는 28.15MPa로 시중에서 유통되고 있는 고화재 압축강도 16.5MPa과 비교하여 약 70% 높은 강도 발현을 나타내고 있어 고화재 원료로의 사용 가능성을 확인하였다.
Abstract
This study examines the possibility of using cement bypass dust (CBPD), a by-product of the cement industry, as a raw material for hardening agents. To this end, the effect of adding CBPD to ordinary Portland cement (OPC) and slag cement on the physical properties, such as fluidity and compressive strength, was investigated. As the amount of CBPD added increased to 25%, 50%, and 75%, both the fluidity and compressive strength decreased. However, the decrease was smaller in slag cement than in OPC. When 25% CBPD was added, the 7-day compressive strength was 28.15 MPa, which is approximately 70% higher than that of the commercially available hardening agents (16.5 MPa). This confirms the potential of CBPD as a raw material for hardening agents.
참고문헌 (18)
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