Laboratory compaction test results for a cohesive soil are given inthe following table:
Water Content (%) | Dry Density (pcf) |
12.0 | 116.2 |
13.6 | 117.6 |
14.8 | 117.9 |
16.1 | 116.5 |
17.2 | 113.6 |
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Plot Diagram with labels and sample testlabels
Specifications call for a fill dry density of 114 pcf andfurther require that the fill be compacted at optimum water contentfor the field compactive effort. For the following field densitytest results on a fill, explain how you alter the field placementoperation:
- ?d = 115 pcf ; ? = 12.5 percent
- ?d = 112.5 pcf ; ? = 13.5 percent
- ?d = 110 pcf ; ? = 14.5 percent
- ?d = 111 pcf; ? = 17.3 percent
