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Laboratory compaction test results for a cohesive soil are given in the following table: Water Content (%) Dry...

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Civil Engineering


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

                                                                                                              

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:

  1. ?d = 115 pcf ; ? = 12.5 percent

  1. ?d = 112.5 pcf ; ? = 13.5 percent

  1. ?d = 110 pcf ; ? = 14.5 percent

  1. ?d = 111 pcf; ? = 17.3 percent

Answer & Explanation Solved by verified expert
3.7 Ratings (537 Votes)
The main aim to find the Optimum moisture content of compactedsoilFirst of all we need to draw the Graph as per the Dry density vswater contentAs    See Answer
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