PENETRATION
TEST
Application
of One Surcharge Weight- Place one annular weight on the specimen. Seat the
penetration piston with a load of no more than 44N (10 lb.)
Application
of the Remaining Surcharge Weight- After seating the penetration piston, place
the remainder of the surcharge weight around the piston. The total amount of
surcharge weight placed on the specimen shall be equal to the surcharge weight
used during soaking. Set the penetration dial indicator and the load indicator
to zero.
Application
of Load-Apply the loads to the penetration piston so the rate of penetration is
uniform at 1.3 mm (0.05 in.)/ mm. Record the load when the penetration is
0.64
1.27
1.91
2.54
3.81
5.08
7.62
Load
readings at penetrations of 10.16 and 12.70 mm (0.400 and 0.500 in.) may be
obtained is desired.
