A modified proctor test (ASTM D-698, Method C) was performed for a soil with Gs = 2.70. Results are as follows:
w, %
6.5 9.3 12.6 14.9 17.2 18.6
Wet Weight (in mold), gf
3250 3826 4293 4362 4035 3685
a) Plot γd vs w relation.
b) Determine γdmax and Wopt.
c) Calculate S and e at the maximum dry unit weight point.
d) What is γd at Wopt?
e) What is the range of water content if the relative compaction (R.C.) is required to be 95% of the standard proctor γdmax?