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CBR Surcharge Masses are used in CBR testing for simulation of pavement or base course confining loads. Masses are available with an annular (circular) opening or a convenient slotted opening that allows adding or removing masses with the penetration piston in place. Additional masses may be needed when simulating large pavement loads.
BRA-40 CBR Annular Surcharge Mass, 10lb has a 10in (254mm) diameter and circular opening.
BRA-41 CBR Slotted Surcharge Mass, 10lb has an 8.5in (216mm) diameter and U-shaped opening.
BRA-42 CBR Slotted Surcharge Mass, 20lb with 8.5in (216mm) diameter and U-shaped opening.
BRA-40: 10in (254mm)
BRA-41: 8.5in (216mm)
BRA-42: 8.5in (216mm)
BRA-40: 12.0lb (5.44kg)
BRA-41: 12.0lb (5.44kg)
BRA-42: 22.0lb (9.98kg)
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