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...
Read More

Description

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 EN 12697-33 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.

Products

Code
Description
Units

Technical Specifications

Models

77-PV41A02
77-PV41A04

Machine control

- Vertical displacement of the roller segment by brushless motor measured directly by encoder to verify in real time the specimen thickness
- Machine fitted with sensors to confirm the mould in position and for the automatic set-up of the horizontal travel

Firmware

Set up of compaction procedure with displacement control with load, density or thickness limit.
- Selection, customization and storing of test parameters
- Customization of the compacting procedure to be saved and recalled from the data base
- Graphic display of roller vertical displacement vs. number of passes
- Possibility to pre-set a load threshold to start compaction at the contact of the sector head with the specimen

Max. vertical force

30 kN

Compacting device

Roller segment, radius 535 mm

Back and forth horizontal travel

Adjustable: 300/320 mm
400 mm
500 mm
By control panel

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 195mm
400 x 300 x 195mm
500 x 300 x 195mm
500 x 400 x 195mm

Roller vibration

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

Heated foot

Yes (optional)

Electrical supply

220 V, 50 Hz, 1 ph, or
110 V, 60 Hz, 1 ph

Power rating

3000 WE

Overall dimensions
(l x w x h)

1300 x 800 x 2040 mm

Weight approx.

650 kg

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

Standards

  • ASTM D8079

Accessories and Spare Parts

Code
Description
Units

Documents