Study On The Engineering Property Of Roadbed Soil-filling Of An-hui Bo-Fu Expressway

This text mostly dissects and contrasts the relationships between physics cy, mechanics cy, water cy, micro-structure, mineral-chemistry element and engineering property of every roadbed silt of An-hui Bo-Fu expressway and then assays it's transformation. Author did lot's of experimentations about every roadbed silt, furthermore, contrasted some other datum.Finally, the indexes of every embankment silt have been obtained.And then,analysis by using X ray diffraction (XDA) for main means ,is to determine the mineral component part of Bo-Fu expressway with Polar microscope,. Scanning electron microscope (SEM) and Chemistry analysis. Using X ray diffraction and half quantitative analytical method,we can ration mineral and his relative content in the silt . Through scanning electron microscope (SEM), micro-structure of the air dried sample is researched of observing to verify project nature of the silt and its micro-structure have close connection very further.Studies have shown: The mineral composition of the silt is controlling the project nature of the soil to a certain extent, but compared to the micro-structure of the silt ,the total influence to the engineering property is not too great. Micro-structure has remarkable influence to compression performance in soil ,cut intensity and permeability . In addition ,on the base of analysis to silt disease that might destroy road bed I have proposed the administration measures correspondingly .