Conducting rolling on the surface uneven, pay attention to the edge of the section roller goes up balances to ensure the entire surface density; when rolling the roller goes from low to high to avoid drifting material features
During lu lu conducted from outside to inside, from low to high rollers. The streak rolling wheel to overlap from 25 to 50cm vertical streaks of discoloration. Conducting rolling on the surface uneven width
of sand humidity when compacting only ± 2% difference compared to the humidity of the soil type that best found in the laboratory
control the packing material
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