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.
- Completely electromechanically operated
- Conforming to ASTM D8079
- 8” touchscreen controlled
- Automatically compacts in displacement controlled mode up to target density/height or up to the (user selectable) load limit
- Mould dimensions: 500 x 400, 500 x 300, 400 x 300, 300 x 300 and 320 x 260 mm, 195 mm height
- Compaction direction in the longest (major) mould dimension to obtain specimens of the proper length conforming to Standard
- Vertical balanced of sliding cover for easy access and complete three side view
- Maximum compaction load 30 kN
- User defined controlled linear speed up to 300 mm/sec and adjustable pause at the mould inversion point
- Ideal for producing test beams for 4-Point bending (EN 12697-24, EN 12697-26, AASHTO T321) and slabs down to 38 mm
- Adjustable heating control system of the sector heads available as option
- Vibrating roller option, adjustable from 10 to 50 Hz
- *PRO-COMPACT closed-loop control slab
*PRO-COMPACT closed-loop is an innovative mechanical and electronic control that combines orthogonality of the load, pendulum motion of the head and sinusoidal non-friction forward-reverse carriage movement. This results in an optimally compacted sample that features Planarity Regularity and hOmogeneity (PRO).
The software is able to combine a load/displacement compaction. This procedure provides at the beginning of the test a controlled displacement compaction, which can grant a flat surface of the compacted slab, followed by a load compaction phase, which can replicate the real compaction on the road surface.
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Models
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77-PV41A02
77-PV41A04
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Machine control
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- 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
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Firmware
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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
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Max. vertical force
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30 kN
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Compacting device
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Roller segment, radius 535 mm
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Back and forth horizontal travel
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Adjustable: 300/320 mm
400 mm
500 mm
By control panel
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Trolley speed
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Adjustable up to 300 mm/s
Adjustable pause at inversion point
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Mould dimensions*
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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
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Roller vibration
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Yes, adjustable frequency from 10 to 50 Hz (optional)
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Heated foot
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Yes (optional)
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Electrical supply
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220 V, 50 Hz, 1 ph, or
110 V, 60 Hz, 1 ph
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Power rating
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3000 WE
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Overall dimensions
(l x w x h)
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1300 x 800 x 2040 mm
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Weight approx.
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650 kg
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*To produce slabs down to 38 mm thickness. Maximum slab thickness varies with bitumen mixes composition.
77-PV41A02
Standard multi-size electromechanical slab compactor. 230V/50-60Hz/1ph
77-PV41A04
Standard multi-size electromechanical slab compactor. 110V/60Hz/1ph
77-PV42001
Interchangeable sector head to produce slabs 320 mm long x 260 mm wide
77-PV42011
Interchangeable sector head to produce slabs 320 mm long x 260 mm wide. Complete with heating system
77-PV42102
Steel mould 320x260 mm, 195 mm high, to be filled at 155 mm max, for PV41XXX electromechanical slab compactor
77-PV43001
Interchangeable sector head to produce slabs 300 mm long x 300 mm wide
77-PV43011
Interchangeable sector head to produce slabs 300 mm long x 300 mm wide. Complete with heating system
77-PV43012
Compaction sector head heating system for 77-PV41C0x and 77-PV41A0x series
77-PV43042
Motor vibrator roller option. For 380V/50Hz/3ph, 220V/60Hz/3ph, 110-230V/50-60Hz/1ph models.
77-PV43102
Steel mould 300x300 mm, 195 mm high, to be filled at 155 mm max, for PV41XXX electromechanical slab compactor
77-PV44001
Interchangeable sector head to produce slabs 400 mm long x 300 mm wide
77-PV44011
Interchangeable sector head to produce slabs 400 mm long x 300 mm wide. Complete with heating system
77-PV44102
Steel mould 400x300 mm, 195 mm high, to be filled at 155 mm max, for PV41XXX electromechanical slab compactor
77-PV45001
Interchangeable sector head to produce slabs 500 mm long x 300 mm wide
77-PV45011
Interchangeable sector head to produce slabs 500 mm long x 300 mm wide. Complete with heating system
77-PV45102
Steel mould 500x300 mm, 195 mm high, to be filled at 155 mm max, for PV41XXX electromechanical slab compactor
77-PV46001
Interchangeable sector head to produce slabs 500 mm long x 400 mm wide
77-PV46011
Interchangeable sector head to produce slabs 500 mm long x 400 mm wide. Complete with heating system
77-PV46102
Steel mould 500x400 mm, 195 mm high, to be filled at 155 mm max, for PV41XXX electromechanical slab compactor
