Question

The data from a standard Proctor test are shown in the table below. a) Determine the maximum dry unit weight and the optimum water content. b) Plot the zero air voids line. c) Determine the degree of saturation at the maximum dry unit weight. Mass of Mass of Mass of Mass of Water Mass of | Bulk wet soil can and can and can and mold wet soil dry soil content wet soil unit grams) (%) (grams) | weight (g) (grams) (grams) M. My Mc M. KNm 5906 108.12 105.1 42.1 4.8 1709.5 17.80 | 6013 98.57949 40.9 6.8 1816.5 18.91 6135 121.9 1147 42.7 10.01 1938.5| 20.18 6156 118.39 110.5 11.6 1959.5 20.40 6103 | 138.02 126.8 41.8 T 13.2| 1906.5 19.85 | M.

Answer 1

Water Content 4.8 T=W/V (kN/m) 17.8 18.91 20.18 Yo=1/(1+w/ d (kN/m) 16.98 17.71 18.35 6.8 ZAV Line, Ty=(1-1) GY/(1+wG) (kN/m) 23.06 22.03 20.55 19.88 19.26 10 11.6 2014 18.28 13.2 19.85 17.54

Dry Density (kN/m3) 6 12 14 10 Water Content (%) +Dry Density Zero Air Voids Line

y Max. Dou Unit wt. = 18.35 kN/m3 Optimum water content = 10% - C Y- GYw he 18-35 = 2.65*9.81 Ite e = 0.4167 es=wG 0.416785=0.188.65 S=0.63595 ~ 63,595%