摘要
Abstract
Weathered gangue has complex composition and uneven gradation.By controlling the gradation of gangue,the dry density and opti-mal moisture content of weathered gangue under different gradation conditions are obtained,which provides a basis for the application of gangue in roadbed filling and cushion.Using the fractal model gradation equation,6 gangue samples with different gradations are configured.When the fractal dimension is 2.05≤D≤2.71,the maximum dry density of gangue is about 2 g/cm3,and the optimal moisture content is 8%.When the value is 2.79,the maximum dry density decreases and the optimal moisture content increases.With the increase of the fractal dimension value D,only the content of gangue particles with a particle size of less than 0.075 mm is constantly increasing,and there is a certain relation-ship with the maximum dry density and the optimal moisture content.关键词
风化煤矸石/级配设计/最大干密度/最优含水率Key words
Weathered coal gangue/Gradation design/Maximum dry density/Optimum moisture content分类
矿业与冶金
