Test and research on flyash as backfill material
HAN Li-jun 1, 2 , ZHANG Li-min 2, GAO Ming 2 , XU Wei 3 (1 China University of Mining and Technology, Xuzhou 221008,China; 2 Shandong University of Science and Technology, Taian 271019,China; 3 Planning Bureau of Taian City, Taian 2
Base on the basic performance research of cement, flyash, water glass, fine sand and other material, orthogonal design method and briquetting test were used to determinate several backfill grout mixture rates with good strength and fluidity, which provide foundations for project application. The backfill material has a good technical and economic benefit.
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