3.15.141.155
3.15.141.155
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KCI 등재
급결제 종류에 따른 광산 차수재의 특성 연구
Study on the characteristic of liner and cover material by accelerating agent type
조용광 ( Yong-kwang Cho ) , 남성영 ( Seong-young Nam ) , 이용무 ( Yong-mu Lee ) , 김춘식 ( Chun-sik Kim ) , 서신석 ( Shin-seok Seo ) , 조성현 ( Sung-hyun Jo ) , 이형우 ( Hyoung-woo Lee ) , 안지환 ( Ji-whan Ahn )
UCI I410-ECN-0102-2018-400-003810585
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At present research on mining backfill materials is being carried out to prevent ground subsidence and breaking by underground cavern of exhausted mines. However, backfill materials can cause secondary environmental issues such as ground pollution. To solve these issues, liner and cover materials are constructed before backfill materials constructed, to inhibit toxic substances form moving to the surroundings. Liner and cover materials, however, should have an accelerating performance after construction and when the accelerating performance is degraded, the work efficiency can be lowered, and the construction cost can be increased, by many rebound content. Therefore, this study develops mining liner and cover materials, and evaluates their accelerating performance and physical properties of liner and cover materials by types and content of accelerating agent. In case of aluminate accelerating agent, it is mixed with more than 5% of liner and cover materials(binder/ratio); thus an accelerating performance satisfying Korean Industrial Standards(KS) occurs, and in case of alkali-free accelerating agent, when it is mixed with more than 7%(binder/ratio), accelerating performance satisfying KS occurs. The more the accelerating agent capacity increases, the more compressive strength decreases. In addition, it is confirmed that compressive strength of aluminate accelerating agent is more degraded than compressive strength of the alkali-free accelerating agent. It is also confirmed that drying shrinkage stability of the alkali-free accelerating agent is better than the drying shrinkage stability of the aluminate accelerating agent.

[자료제공 : 네이버학술정보]
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