General Description

The slab compactors can compact asphalt slabs to a target density applying specific loads corresponding to those of pavements rollers used in the high...
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The slab compactors can compact asphalt slabs to a target density applying specific loads corresponding to those of pavements rollers used in the highway construction. The slab can be used for: 

  • Wheel tracking test down to 38 mm thickness
  • Cored to provide specimens for indirect tensile, static and dynamic creep tests
  • Cut into beams for benfing fatigue tests

The slab compactors are proposed in two versions:

  • Standard models
  • Advanced models, which also satisfy the compaction procedure of the brand new EN 12697-33 method 7.3 and include other important features. 

Electromechanical slab compactors feature a compacting system by roller segment head radius 535 mm. The roller segment freely moves by simple friction for better compaction uniformity. A brushless motor (standard models), or stepper motor (advanced models) moves vertically the roller segment under displacement control. the vertical load is applied orthogonally to the axis of the travel motion. the mould carriage moves back and forth by linear movement. The longitudinal (major) mould dimension correspond to the compaction direction so it is possible to obtain specimens of the proper lenght conforming to Standards. The lifting machine cover permit an easy access to the mould area. In the "rest" position, the mould is close to the operator for easy positioning while the roller segment is lifted and positioned at the back of the machine.

The Electromechanical slab compactor can be used as part of your Superpave performance based testing program.



Technical Specifications



Machine control

- Vertical load and/or displacement control of the roller segment by stepper motor, measured directly by linear transducer to verify in real time the specimen thickness for more accuracy
- Real time measurement and control with a closed loop logic of compaction load by two precision strain gauge load cells. This system permits to verify possible discrepancies of the compaction due to the wrong distribution of asphalt in the mould and to any other unexpected malfunctions, with warning to the operator
- Machine fitted with sensors to confirm the mould in position and for the automatic set-up of the horizontal travel


- 21'' Touchscreen integrated PC
- Fully programmable PC software operating in Windows®
- Set up of customized compaction sequence as free combination of load/displacement controlled cycles
- Selection, customization and storing of test parameters
- Customization of the compacting sequence to be saved and recalled from the database
- Graphic display of displacement / force vs. number of passes or load vs. displacement

Max. vertical force

30 kN

Load measurement

By two precision load cell

Compacting device

Roller segment, radius 535 mm

Back and forth horizontal travel

Adjustable: 300/320 mm
400 mm
500 mm
By software

Trolley speed

Adjustable up to 300 mm/s
Adjustable pause at inversion point

Mould dimensions*

320 x 260 x 195 mm
300 x 300 x 195 mm
400 x 300 x 195 mm
500 x 300 x 195 mm
500 x 400 x 195 mm

Roller vibration

Yes, adjustable frequency from 10 to 50 Hz (optional)

Heated foot

Yes (optional)

Heated base

Yes (optional)

Electrical supply

380 V, 50 Hz, 3 ph, or
220 V, 60 Hz, 3 ph

Power rating

3000 W

*To produce slabs down to 38 mm thickness. Maximum slab thickness varies with bitumen mixes composition.


  • EN 12697-33
  • ASTM D8079

Accessories and Spare Parts