The
sample shall be handled and specimen(s) for compaction shall be prepared in
accordance with the procedures given in T99 or T180 for compaction in a 152.4mm
(6-in) mold accept as follows:
If
all material passes a 19.0mm (3/4 in) sieve, the entire gradation shall be used
for preparing specimens for compaction without modification. If there is
material retained on the 19.0-mm sieve, the material retained on the 19.0-mm
sieve shall be removed and replaced by an equal amount of material passing the
19.0-mm sieve and retained on the 4.75-mm (No.4) sieve obtained by separation
from portions of the sample not otherwise used for testing.
Bearing
Ratio Optimum Water Content- From a sample having a mass of 35 kg (75 lb.) or
more, select a represented portion having a mass of approximately 11kg (25 lb.)
for a moisture-density test and divide the remainder of the sample to obtain
three representative portions having a mass of approximately 6.8 kg (15 lb.)
each.
Bearing Ratio for a Range of Water Content-From a sample having a mass
of 113 kg (250 lb.) or more, select at least five representative portions
having a mass of approximately 6.8kg (15 lb.) each for use in developing each
compaction curve.
