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Journal of the Korea Concrete Institute

J Korea Inst. Struct. Maint. Insp.
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  • Korea Citation Index (KCI)

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Title The Effect of Addition of Blast-furnace Slag Powder and Limestone Powder on Shotcrete Binder with Calcium Aluminate Accelerator
Authors 강봉희(Bong-Hee Kang) ; 김규용(Gyu-Yong Kim) ; 최재원(Jae-Won Choi) ; 구경모(Kyung-Mo Koo) ; 황봉춘(Bong-Choon Hwang)
DOI https://doi.org/10.11112/jksmi.2020.24.2.86
Page pp.86-93
ISSN 2234-6937
Keywords 고로슬래그 분말; 석회석 분말; 숏크리트 결합재; 칼슘 알루미나산염 급결제; 시멘트 수화과정 Slag powder; Limestone powder; Calcium Aluminate accelerator; Cement hydration
Abstract Shotcrete concrete is generally used in the form of ready-mixed concrete products using type I ordinary portland cement(hereinafter referred to as OPC) and about 5% of accelerator mixed separately in the field. In this study, we tested the effect of addition of slag powder(SP) and limestone powder(LSP) on a penetration resistance, compressive strength of binder for shotcrete using calcium aluminate type accerlerator. And we analysed hydrates and pore structure effects on mortar performance. In the future, it is expected to be useful for manufacturing optimized composite cement as a binder for shotcrete.