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Optimisation of repeatability and productivity through the automation of human interface

Roller compaction is the laboratory method that most closely simulates on-site compaction. The machine can be configured to operate with a single wheel or twin wheels depending on the mould size. The wheels track the surface in overlapping wheel-paths using sequences specified in EN 12697-33 or custom sequences designed by the user. The base of the mould is incrementally raised by a precision jacking system and the system is tracked to keep it level with the top of the mould. Compacted slabs can be from 50 to 150mm thick. 500 x 180mm slabs are usually wheel tracked in the Cooper Technology Large Wheel Tracker, whilst 600 x 400mm slabs are normally cut to produce trapezoidal or prismatic specimens for fatigue, modulus tests and Duriez test.


  • EN 12697-33 Pneumatic tyred roller
  • NF P98-250-2

Key Features

  • Compacts uniform slabs of asphaltic paving mixture
  • Computer control for repeatable standard EN 12697-33 compaction patterns
  • Option for customer defined compaction patterns to be programmed and saved
  • Single or dual wheeled configuration
  • Mould size (length x width) 500 x 180mm or 600 x 400mm
  • Compacted slabs can be used in the large pneumatic tyred wheel tracker or cut into beams for bending tests
  • Safety enclosure with optical laser sensors for user safety, easy access and excellent manoeuvrability
  • Issued with UKAS certification of calibration

Key Uses

Preparation of homogeneous asphalt slabs:

  • Wheel tracking tests
  • Sawing into beams for bending tests
  • Coring to produce specimens for indirect tensile and axial tests


  • User friendly, intuitive and reliable Windows™ software developed using LabVIEW™
  • Software is designed to perform EN 12697-33 (Large Scale Device)
  • The user interface can be translated into the user’s preferred language – please enquire
  • Real time display of current compaction height and diagnostic indicators
  • EN compaction routines are included as standard
  • User can design and save custom compaction routines

European Large Roller Compactor - Pneumatic Tyred Roller software


Accessories are not included in the price of main device (unless stated otherwise) and may be purchased separately if required.

CRT-WTRCM-100LD Mould – 500x180x100mm deep
CRT-WTRCM-50LD Mould – 500x180x50mm deep
CRT-RCM-150LD Mould – 600x400x150mm deep
CRT-RCM-100LD Mould – 600x400x100
CRT-RCLD-600SR Steel Roller to Level Sample Surface – 600x400mm
CRT-RCLD-500SR Steel Roller to Level Sample Surface – 500x180mm
CRT-INSERT-50LD Mould – Insert 500x180x50mm deep
CRT-INSERT-50LD600 Mould – Insert 600x400x50mm deep
CRT-RCENLD-SC600400 Surcharge Collar – 600x400mm
CRT-RCENLD-SC180500 Surcharge Collar – 180x500mm
CRT-WTRCLD-FK Lifting Trolley for Large Device Roller Compactor
CRT-WTRCLD-ASS (Replacement Part) Replacement Full Assembly Tyre Wheel Innertube
CRT-WTRCLD-EXT (Replacement Part) Valve Extender for Tyre for Large Device
CRT-WTRCLD-IREP (Replacement Part) Replacement Innertube for Large Device
CRT-WTRCLD-TREP (Replacement Part) Pneumatic Tyre for Large Device
CRT-WTRCLD-WREP (Replacement Part) Replacement Wheel for Large Device


Technical specifications are subject to change without notice.

Maximum Wheel Load 5kN Single wheel, 10kN Dual wheel
Mould Dimensions 500 x 180, 600 x 400 (others available)
Wheel Speed 200 to 500 mm/s
Slab Thickness 50, 100, 150 mm (others available)
Electrical Supply¹ 3 Phase 415 Volts 50Hz @ 32A (others available)
Compressed Air 7-10 bar @ 100 L/min
Dimension mm (W x D x H) Compactor 1600 x 1300 x 2150
Power Pack 550 x 600 x 700
Working space required mm (W x D x H) 2600 x 3300 x 2300
Weight (approx.) Kg 1365 (including Power Pack)
PC Included

¹ others available upon

Calibration & Maintenance

Calibration, Annual Service and Maintenance Contracts are available for this device.

Please enquire for further details. Note: This device should be checked and calibrated annually.