Research and Development of a New Silica-Alumina Based Cementitious Material Largely Using Coal Refuse for Mine Backfill, Mine Sealing and Waste Disposal Stabilization

Technical Report · Fri Jun 29 00:00:00 EDT 2012

DOI:https://doi.org/10.2172/1048945· OSTI ID:1048945

Sun, Henghu; Yao, Yuan

Coal refuse and coal combustion byproducts as industrial solid waste stockpiles have become great threats to the environment. To activate coal refuse is one practical solution to recycle this huge amount of solid waste as substitute for Ordinary Portland Cement (OPC). The central goal of this project is to investigate and develop a new silica-alumina based cementitious material largely using coal refuse as a constituent that will be ideal for durable construction, mine backfill, mine sealing and waste disposal stabilization applications. This new material is an environment-friendly alternative to Ordinary Portland Cement. The main constituents of the new material are coal refuse and other coal wastes including coal sludge and coal combustion products (CCPs). Compared with conventional cement production, successful development of this new technology could potentially save energy and reduce greenhouse gas emissions, recycle vast amount of coal wastes, and significantly reduce production cost. A systematic research has been conducted to seek for an optimal solution for enhancing pozzolanic reactivity of the relatively inert solid waste-coal refuse in order to improve the utilization efficiency and economic benefit as a construction and building material.

• Research Organization: University of the Pacific, 3601 Pacific Ave, Stockton, CA
• Sponsoring Organization: USDOE; USDOE EE Office of Industrial Technologies (EE-2F)
• DOE Contract Number: EE0003496
• OSTI ID: 1048945
• Report Number(s): DOE/EE0003496-1; TRN: US201218%%970
• Country of Publication: United States
• Language: English

Related Subjects

01 COAL, LIGNITE, AND PEAT
54 ENVIRONMENTAL SCIENCES
BUILDING MATERIALS
CEMENTS
COAL
COMBUSTION
COMBUSTION PRODUCTS
CONSTRUCTION
ECONOMICS
EFFICIENCY
GREENHOUSES
PORTLAND CEMENT
PRODUCTION
SLUDGES
SOLID WASTES
STABILIZATION
STOCKPILES
WASTE DISPOSAL
WASTES
Coal Refuse
Cementitious Material
Performance
Energy Saving
CO2 Reduce