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原文传递 CHARACTERISATION OF ZINC TAILING FOR BITUMINOUS ROAD CONSTRUCTION

题名：	CHARACTERISATION OF ZINC TAILING FOR BITUMINOUS ROAD CONSTRUCTION
正文语种：	eng
作者：	A K Sinha;V G Havanagi;A P Singh
作者单位：	GE Division CSIR-Central Road Research Institute New Delhi India;GE Division CSIR-Central Road Research Institute New Delhi India;PED Division CSIR-Central Road Research Institute New Delhi India
摘要：	Zinc tailing is an industrial waste material generated from zinc producing industry in huge quantities. Presently, it has no use or very little use in backfilling of mines which resulted in huge accumulation in the generating industry. Its deposit is increasing day by day due to the increase in demand for zinc. However, it has the potential for application in bituminous mixes for road construction as a partial replacement for fine aggregate. Characterization of tailing was carried out in the laboratory considering the application in bituminous mixes (bituminous macadam grades Ⅰ & Ⅱ, dense bituminous macadam grades Ⅰ & Ⅱ, and bituminous concrete grades Ⅰ & Ⅱ). Different bituminous mixes were prepared using tailing as a partial replacement of fine aggregate along with conventional aggregate (40 mm, 20 mm, 10 mm, stone dust). Marshall specimens were prepared and tested according to the design mix proportion of aggregates at different bitumen (binder) content in the range of 3.5 to 6 percent. The optimum binder content was determined at 4% air voids. It was observed that the physical properties of compacted bituminous mixes are meeting as per MoRTH specifications. It was concluded that 5% tailing can be used as a partial replacement of fine aggregate in the bituminous macadam and dense bituminous mixes while 7% in bituminous concrete.
出版年：	2023
期刊名称：	Indian Highways
卷：	51
期：	7
页码：	28-36