Wheel tracking is used to assess
the resistance to rutting of asphaltic materials
under conditions which simulate the effect of
traffic. A loaded wheel tracks a sample under
specified conditions of load, speed and temperature
while the development of the rut is monitored
continuously during the test. Test specimens can
be either slabs prepared with a laboratory compactor
or 200mm Ø cores cut from the highway.
The Wheel Tracker CRT-WTEN1 performs both procedures
A and B specified for the small scale device in
EN 12697-22. Procedure A requires that six specimens
are tested. For procedure B, only two specimens
need to be tested, but rut depth must be measured
at more points along the longitudinal rut profile.
To speed up the testing process, the Wheel Tracker
CRT-WTEN2 was designed to test two specimens simultaneously.
The Wheel Tracker CRT-WTAUS 1 arm conforms specific
Australian standards.
Standards
EN 12697-22, Small device AGPT/T231
(supersedes AST 01) BS 598-110:1998
Features:
• Test materials for roads with axle loads
up to 13 tonnes
• Rigid test frame built from extruded
aluminium section
• Integral temperature controlled cabinet
with double glazed doors
• PID control of test temperature in the
range of 40ºC to 62ºC
• Rack for pre-test temperature conditioning
of specimens
• The CRT-WTEN2 tests two specimens simultaneously
• Closed-loop speed control
Specifications:
| Wheel Load : |
700/520N |
| Mould Dimensions : |
305x305mm |
| Wheel Speed : |
26.5 cycle per minute |
| Slab Thickness : |
40 to 100mm |
| Rut Depth Transducer : |
Range 50mm |
| Temperature Range : |
40 to 60ºC |
| Electricity Supply Single: |
220-240 Volts 50/60Hz @13A |
| Double 220-240 Volts |
50/60Hz @16A |
| Compressed Air Dual |
7-10 bar @ 600L/min |
| Dimensions mm (WxDxH) Single |
1579x840x1740 |
| Double |
1750x1090x1970 |
| Estimated weight Single |
448kg |
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