摘要
Abstract
In order to optimize the road performance of OGFC mixture,this paper systematically analyzed the effects of rough aggregate angular-ity and grade type on the road performance of OGFC mixture by carrying out tests on Marshall stability,voidage and water permeation perform-ance of asphalt mixture.The results show that the Marshall stability,void fraction,dynamic stability and BNP of the mixture increase linearly with the increase of the rough aggregate angular property,and the water seepage coefficient increases first and then stabilizes.The larger the maximum particle size of coarse aggregate,the larger the voidage and water permeation coefficient of mixture,and the smaller the dynamic sta-bility.When the angular property of coarse aggregate is greater than 2 200,the comprehensive performance of OGFC-13 graded mixture is the best,and its BNP,Marshall stability and water permeability coefficient are 65.46,6.43 kN and 0.45 cm/s,respectively.关键词
大孔隙沥青混合料/粗集料棱角性/抗变形/抗车辙/抗滑Key words
Macroporous asphalt mixture/Rough aggregate angular property/Anti-deformation/Rutting resistance/Anti-skid分类
交通工程
