Natural gravel is rich natural resources and also better stable compacting roadbed material in the river courses of mountain areas.
天然砂砾料是山区河道中丰富的自然资源，也是压实后稳定性良好的路基填筑材料。
The article analyses nature of lime, manganese iron, Aeolian soil, cement, and material requirement of roadbed.
论文分析了石灰、锰铁废渣、风积砂土、水泥的性质，以及阐述了路面基层对材料的要求。
The article analyses nature of lime, manganese iron, Aeolian sandy soil, cement, and material requirement of roadbed.
论文分析了石灰、锰铁废渣、风积砂土、水泥的性质，以及阐述了路面基层对材料的要求。
The article analyses nature of lime, manganese iron, Aeolian sandy soil, cement, and material requirement of roadbed.
论文分析了石灰、锰铁废渣、风积砂土、水泥的性质，以及阐述了路面基层对材料的要求。
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