Abstract：Research purposes: Based on the example of improving the filling materials for the subgrade of Wuchang-Guangzhou Passenger Dedicated Railway, the chemical experiments are done on improving sandstone for the purpose of doing research on the feasibility of using sandstone as the filling materials for the subgrade of passenger dedicated railway.
Research conclusions: The improved sandstone is much better in property of physical mechanics, especially in mechanics strength and hydrological property, which can satisfy the requirements of railway subgrade for filling materials, so it is feasible to use calcined lime as the modified agent for all weathered and serious weathered sandstone.
陈花林. 石灰改良泥质粉砂岩路基填料的试验研究[J]. 铁道工程学报, 2008, 25(3): 10-14.
CHEN Hua-lin. Experimental Research on the Improving Filling Materials with Lime for Argillaceous Sandstone Subgrade. 铁道工程学报, 2008, 25(3): 10-14.
2008, Vol. 25 
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