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合武铁路客运专线以路堤穿越膨胀土区域有一百多公里,涉及石灰改性膨胀土填料近千万方,石灰改性膨胀土路堤质量控制的好坏制约着合武铁路工程建设的成败。因此,了解膨胀土的概念及其改性填料的工程特性对于控制路堤的填筑质量会有所帮助。
There are over 100 km of embankment crossing the expansive soil in the passenger line of the railway connecting to the Wuhan-Wuhan Railway, involving tens of thousands of square meters of lime-modified expansive soil. The quality control of the lime-modified expansive soil embankment restricts the success or failure of the construction of the railway. Therefore, understanding the concept of expansive soils and the engineering properties of their modified fillers will be helpful in controlling the filling quality of embankments.