PAVELAB GYROCOMP, GYRATORY COMPACTOR

Gyratory technique basically consists in a compaction of a bituminous mixture contained in a cylindrical mould with the simultaneous action of a vertical static compaction and of the shearing action resulting from the rotation of the mould on its inclined axis. The compaction data is measured and recorded during the test. PAVELAB GYROCOMP gyratory compactors, used for the past twenty years all over the world, are the reference point in terms of user-friendliness combined with reliability and ergonomics, and they have been produced in hundreds of units. Thanks to this experience Controls is introducing the third generation of gyratory compactors with the new PAVELAB GYROCOMP gyratory compactor. The new compactor includes and increases the advantages of the previous models.

The standards specify the method for compaction of cylindrical specimens of bituminous mixtures using a gyratory compactor, Such compaction is achieved by combining a rotary shearing action and a vertical force applied by a mechanical head. The method can be used for:

• The preparation of specimens of given height at a predetermined density, for subsequent testing of their mechanical properties;
• The derivation of a curve density versus number of gyrations;
• The void content for a given number of gyrations.

The standards apply to bituminous mixtures (made both in laboratory or from work site sampling), with aggregates not larger than 37.5 mm. During operation the bituminous mixture is contained within a cylindrical mould (100 or 150 mm dia.). Compaction is achieved by the simultaneous action of a low static compression and of the shearing action resulting in the motion of the centerline of the test piece, which generates a conical surface of revolution, while the ends of the test piece remain approximately perpendicular to the axis of the conical surface.

Robust thus light high stiffness steel monocoque structure, incorporating pneumatic cylinder for vertical load application and electromechanical mechanism for the gyration system with exclusive mould rotation system, granting high accuracy and repeteability of test results, together with stiffness and angle stability values widely within the limits defined in EN 12697-31. Touch-screen user-friendly integrated control panel, large display showing the test graph in real time, on board firmware including 12 languages. Possibility to remote test control by PC. The software language can be defined making the interface suitable for any user needs. The machine can be fit with the electromechanical extruder. See accessories. The machine is supplied complete with Height calibration tool, PC software, air hose, operating instructions and calibration certificate. Models preset to ASTM/AASHTO are supplied complete with traceable certificate of load, displacement and internal angle. Models preset to EN are supplied complete with traceable certificate of load, displacement and internal angle, including all the parameters required in EN 12697-31 Annex C (“stability factor”, “parallelism factor”, “full rotation factor”). Cylinder moulds, distance plates and air compressor not included. See accessories.

• 76-PV2522
  PAVELAB GYROCOMP gyratory compactor, internal angle of gyration preset to 1.16° to AASHTO T312/ASTM D6925. 230-110
  V, 50-60 Hz, 1 ph
• 76-PV2522/E
  PAVELAB GYROCOMP gyratory compactor, internal angle of gyration preset to 0.82° l to EN 12697-31 Annex C.
  230-110 V, 50-60 Hz, 1 ph

Note:
All models basically comply to EN 12697-10, EN 12697-31, ASTM D6925, AASHTO T312 and SHRP M-002. The only difference between the 76-PV2522 and the 76-PV2522/E versions, is the angle of gyration, factory set to ASTM/AASHTO or to EN standards. This means that it is possible, with our intervention, to modify from one version to the other the angle of gyration.

Cylinder moulds and distance plates

• 76-PV0250/2
  Cylinder mould 150 mm dia., special alloy steel hardened to 53-55 HRC, internally grinded. Complete with top and bottom plates.
• 76-PV0250/5C
  ​ylinder mould 100 mm dia., special alloy steel hardened to 53-55 HRC, internally grinded. Complete with top and bottom plates.
• 76-PV0250/10
  Cylinder mould 150 mm dia., special alloy steel hardened to 53-55 HRC, internally grinded, with holes for cold mix compaction.
  Complete with top and bottom plates
• 76-PV0250/8
  Cylinder mould 100 mm dia., special alloy steel hardened to 53-55 HRC, internally grinded, with holes for cold mix compaction.
  Complete with top and bottom plates
• 76-PV0250/3
  Distance plate, 150 mm dia., 50 mm high, for preparing short samples
• 76-PV0250/6
  Distance plate, 100 mm dia., 38 mm high, for preparing short samples
• 76-PV0250
  ​Accessories to compact 100 mm dia. specimens including 100 mm height calibration device

Integrated work top with extruder

• 76-PV2520/15
  Integrated work top with electromechanical specimen extruder. 230 V, 50-60 Hz, 1 ph

Description

The work top with extruder fits perfectly the PAVELAB GYROCOMP resulting in an ergonomic solution for the operator. Electromechanical motor speed reducer, 550 W electric motor, producing a maximum load of ----- which is essential for cold mix specimens requiring a much bigger extrusion capacity.

• Dimensions: 502x753x808(h) mm
  Weight approx.: 45 kg
• 76-PV0252/14
  Integrated work top with manual extruder

Air compressor

• 76-PV0250/7
  Low noise air compressor. 230 V, 50 Hz
  Description
  • 10 bar max. pressure, 130 l/min air delivery, 10 l cap., power rating 750 W, silent operation (less than 59 dB, ISO 3744, r=4 m).
  • Overall dimensions (wxdxh): 370x410x650 mm
  • Weight approx.: 27 kg

• Compacted specimen size: 150 and 100 mm dia.
• Sample height: 80 to 200 mm (150 mm)-50 to 125 mm (100 mm)
• Consolidation pressure: 80 to 800 kPa (150 mm) -160 to 1400 kPa (100 mm)
• Internal angle of gyration: Adjustable from 0.70 to 1.40 °.
  Preset to 1.16° internal angle ( 76-B2522, ASTM/AASHTO models)
  Preset to 0.82° internal angle (76-B2522/E, EN models)
• Speed of gyration: adjustable from 15 to 60 rpm
• Number of gyrations: adjustable up to 999
• Test programmable either by number of gyrations or specimen height
• Communication with PC: RS 232 connections
• Internal memory: thousands of tests
• Power rating: 1000 W
• Dimensions (including extruder bench, wxdxh): 502x753x1940 mm
• Dimensions (wxdxh): 469x615x1130 mm
• Weight approx.: 100 kg