Centrifuge Extractor 1500, Centrifuge Extractor 3000
45-3810, 45-3815
3
9907X0071 Issue 2
1 Introduction
1.1
Centrifuge extractor, 1500 g capacity
EN 12697-1, ASTM D2172, AASHTO T58,
T164
The centrifuge extractor is designed for use in the determination of bitumen
percentage in bituminous mixtures. It has a removable, precision machined aluminum
rotor-bowl with removable bowl-cover. Filter paper rings are compressed between the
rotor-bowl and cover by means of a knurled nut. The rotor-bowl assembly spins on a
vertical shaft enclosed in machined (liquid-tight) aluminum housing. The vertical shaft
has ball bearings at the top and bottom to maintain alignment and minimize the
vibration from an unbalanced sample. The unit has a brake control for fast stopping.
The continuously variable speed control has a range from 0 to 3600 rpm. The solvent
is introduced during the test through the cup on the housing cover. The lower housing
of the centrifuge is a one piece aluminum casting; epoxy finished for ease of cleaning,
and designed to shield the electric motor completely from asphalts and solvents.
1.2
Large centrifuge extractor, 3000 g capacity
The continuously variable speed control has a range of 0-3600 rpm. The 3000 g
capacity allows maximum time economy and maximum accuracy where aggregate
particles are large or where the mix is not uniform.
Figure 1
