Asphalt/bituminous mixture

Standard asphalt slab roller compactor

Standard electro-mechanical multi-size slab compactors, closed loop control system

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ASTM D8079

Main features

Asphalt slab roller compactor 77-PV41A02

Pro-compact produces optimal slabs

Detail of interchangeable sector head for slab compactor

Planarity, Regularity and homogeneity of the slabs produced by the roller compactor

PRO-COMPACT pendulum motion

Slab mould fitted on the machine base

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.

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 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.

More +

Technical
specifications
Ordering
info
Accessories
Upgrading
Documents

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.

Ordering info

77-PV41A02
Standard Multi-size electromechanical slab compactor.
For compaction of moulds 500x400 mm, 500x300 mm, 400x300 mm, 300 x 300 mm and 320 x 260 mm, 195 mm high. Supplied without moulds and compaction sector heads (see accessories).
230 V, 50-60 Hz, 1 ph

77-PV41A04
Standard Multi-size electromechanical slab compactor.
Same as above but 110 V, 60 Hz, 1 ph

Accessories

Interchangeable sector heads
77-PV42001
Interchangeable sector head to produce slabs 320 mm long x 260 mm wide

77-PV43001
Interchangeable sector head to produce slabs 300 mm long x 300 mm wide

77-PV44001
Interchangeable sector head to produce slabs 400 mm long x 300 mm wide

77-PV45001
Interchangeable sector head to produce slabs 500 mm long x 300 mm wide

77-PV46001
Interchangeable sector head to produce slabs 500 mm long x 400 mm wide

Interchangeable sector heads complete with heating system
To be completed with 77-PV43012 Temperature control system (see Upgrading options)

77-PV42011
Interchangeable sector head to produce slabs 320 mm long x 260 mm wide. Complete with heating system.

77-PV43011
Interchangeable sector head to produce slabs 300 mm long x 300 mm wide. Complete with heating system.

77-PV44011
Interchangeable sector head to produce slabs 400 mm long x 300 mm wide. Complete with heating system.

77-PV45011
Interchangeable sector head to produce slabs 500 mm long x 300 mm wide. Complete with heating system.

77-PV46011
Interchangeable sector head to produce slabs 500 mm long x 400 mm wide. Complete with heating system.

Moulds
77-PV42102
Steel mould 320x260 mm, 195 mm high, to be filled at 155 mm max.

77-PV43102
Steel mould 300x300 mm, 195 mm high, to be filled at 155 mm max.

77-PV44102
Steel mould 400x300 mm, 195 mm high, to be filled at 155 mm max.

77-PV45102
Steel mould 500x300 mm, 195 mm high, to be filled at 155 mm max.

77-PV46102
Steel mould 500x400 mm, 195 mm high, to be filled at 155 mm max.

Upgrading

(to be specified at the time of order)

Heating control system of sector heads fitted with heating system
77-PV43012
Compaction sector heating system. Adjustable up to 140°C

Vibrating roller option adjustable from 10 to 50 Hz
77-PV43042
Vibrating roller option.