The results of a standard Proctor test are given in the following table.
a. Determine the maximum dry unit weight of compaction and the optimum moisture content. Given: mold volume = 943.3 cm3.
b. Determine the void ratio and the degree of saturation at the optimum moisture content. Given: Gs = 2.68.

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Trial no. Weight of moist sol in the mold (kg) 1.78 1.87 1.95 1.98 2.02 1.97 1.90 Moisture content (%) 5.0 7.5 10.0 12.5 15 17.5 20.0