After heavy tamping or compaction by rolling, the engineering properties of gravelly soil change with different coarse grained contents.
在重型击实或碾压后,砾质土的工程性质主要受粗粒含量的不同而变化。
2
Considering the features of the construction of this line specific requirements are specified in the filling such as filling with fine earth, coarse mountain surface soil and graded crushed stones.