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原文传递 Use of Recycled Glass and Fly Ash for Precast Concrete; Final rept

题名：	Use of Recycled Glass and Fly Ash for Precast Concrete; Final rept
作者：	Meyer, C.; Baxter, S.
关键词：	Construction materials; Fly ash; Glass; Waste recycling; Portland cement; Concretes; Pavement bases; Alkalies; Chemical reactions; Silicon dioxide; Concrete durability; Alkali aggregate reactions; Feasibility studies
摘要：	An 18-month research project was conducted to study the technical and economic feasibility of using crushed waste glass and chemically self-activated fly ash, a byproduct of coal-burning power plants, to produce precast concrete products. The crushed glass is used as substitute for the aggregate, and the fly ash is substituted for Portland cement as binder. Technically, the important problem of alkali-silica reaction (ASR) had to be addressed and was partially solved in a separate research program funded by NYSERDA. In the present project, additional knowledge was obtained about this important phenomenon, especially in cases where the glass is sorted by color, larger aggregate sizes are desirable, and glass constitutes up to 100% of the aggregate. The primary goal of this research was to develop a material with a particularly attractive appearance that would be suitable for architectural and decorative applications. The use of this material, tentatively called 'glascrete', has been shown to be technically and economically feasible to the point that it is ready for commercial exploitation, provided regular portland cement is used as the binder. Extensive efforts have been made, in conjunction with a project supported by the New York State Department of Economic Development, to spur private parties to product glascrete products commercially. The use of chemically self-activated fly ash as cement replacement is technically feasibile by not yet commercially viable. Efforts to search for less costly chemical activators are continuing. If these efforts are successful, the end result could be a material that consists almost entirely of recycled components namely crush waste glass and fly ash.
总页数：	144p
报告类型：	科技报告