Water stability and strength increasing mechanism are researched and the changing trend and degree of maximum dry densit通过在风化料中掺入粘土的对比试验，研究风化料加入掺加剂后的水稳定性和强度增长机理，得出掺入粘土后风化料最佳含水量、最大干密度、强度的变化趋势和程度。