Q. 2. A sand cone test was conducted for quality control during the compaction of sandy clay. The data are as follows: N

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Q 2 A Sand Cone Test Was Conducted For Quality Control During The Compaction Of Sandy Clay The Data Are As Follows N 1 (37.45 KiB) Viewed 37 times

Q. 2. A sand cone test was conducted for quality control during the compaction of sandy clay. The data are as follows: Note: X is your group number. Calibration to find dry unit weight of the standard sand: Weight of Proctor mold 40.1 N Mass of Proctor mold and sand 54.1 N Volume of mold 950 + 5X cm Calibration of sand cone Mass of sand cone apparatus and jar filled with sand 52.8 N Mass of sand cone apparatus with remaining sand in jar 36.2 N Sand cone test results Mass of sand cone apparatus and jar filled with sand 711 N Mass of excavated soil 17.0N Mass of sand cone apparatus with remaining sand in jar 374 N Water content of excavated soil (5+10% (a) Determine the bulk and dry unit weights in the field. (b) The standard Proctor maximum dry unit weight of the sandy clay is 14.6 kN/m' at an optimum water content of 7.2%. The specification requires 95% Proctor dry unit weight at acceptable water contents in the range owe $(3 - 10). Is the specification met? Justify your answer. If not, suggest a method to improve the compaction.