Research Article
Influence of Backfill Compaction on Mechanical Characteristics of High-Density Polyethylene Double-Wall Corrugated Pipelines
Table 2
Basic properties of the field-test soil.
| Properties | Value |
| In-suit soil | | Maximum dry density (kg/m3) | 1549 | Water content (%) | 12 | Liquid limit (%) | 25.9 | Plastic limit (%) | 17.3 | Void ratio | 42.3 | Backfill sand | | Maximum dry density (kg/m3) | 1730 | Coarse sand (0.5∼3 mm) (%) | 35 | Medium sand (0.35∼0.5 mm) (%) | 57 | Fine sand (0.25∼0.35 mm) (%) | 8 | Grade | 120 |
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