Study on the Composition and Microstructure of Iron Manganese Intercalations in Weathered Granite in Southeast Guangxi
The iron manganese interlayer in weathered granite in southeastern Guangxi is an important factor affecting its stability.The micro-structure and material composition of black iron manganese interlayers in weathered granite in southeastern Guangxi were studied using testing methods such as SEM,high-resolution CT,XRD,DSC TG,XPS,etc.The soil particles of iron manganese interlayer exhibit different shapes,spherical,irregular,and sheet-like depending on the degree of weathering.The smooth surface of the iron manganese interlayer has smaller pores,mainly isolated pores,and connected pores are mainly distributed in the transition layer between the iron manganese interlayer and completely weathered soil.The macropores in the sample exceeds 90%;The main components of the iron manganese interlayer are O,Si,Al,Fe,Mn,C,of which the Fe and Mn elements are significantly higher than those of the completely weathered soil in the same area.The Fe and Mn content ratio in the iron manganese interlayer is close to 1∶ 2,and there are higher valence states of+3 and+4 in the interlayer,respectively.The main components of iron manganese interlayer are:kaolinite,quartz,boehmite,hematite,goethite.
iron manganese interlayergranite weathered soilmicrostructurematerial compositionslope stability
万方数据
维普
