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Asphalt/bituminous mixture

PAVELAB GYROCOMP Research, Gyratory compactor

EN 12697-10 | EN 12697-31 | AASHTO T312 | SHRP M-002 | ASTM D6925
Main features
  • High productivity
  • Compact and lightweight, also ideal for mobile laboratories
  • High reliability and accuracy
  • Certified to EN and ASTM/AASHTO
  • Including material shear resistance measurement during compaction. Results displayed in real time
  • Individual control of test parameters
  • Windows® based software for data processing 
General description
General description
Introduction
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.

Operating principle
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.
The PAVELAB GYROCOMP research gyratory compactor also features the continuous shear measurement during compaction which is particularly important in the research activity.

Description
Robust thus light bench mounted steel structure, incorporating pneumatic cylinder for vertical load application and electromechanical mechanism for the gyration system. Test data are stored in hard disk (ASCII files). PC controlled , the results are displayed in real time. External specimen extrusion facility by the Integrated work top with electromechanical  extruder. See accessories.
Windows® based software for result processing.
The machine is supplied complete with Height calibration tool,  air hose, operating instructions and calibration certificate.
Cylinder moulds, Distance plates, PC, Air compressor, and distance pieces not included. See accessories.
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”).
The internal gyratory angle can be easily verified and subsequently adjusted by the internal-angle-measurement-apparatus, ILS model. See accessories.
The Gyratory compactor is also available in the new standard version. See \#gyrocomp-gyratory-compactor\#.
More +

Technical specifications

  • 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 to 3°.
    Preset to 1.16° internal angle ( 76-PV0251, 76-PV0251/Z ASTM/AASHTO models)
    Preset to 0.82° internal angle (76-PV0251/E, 75-PV0251/EZ EN models)
  • Speed of gyration: adjustable from 15 to 60 rpm
  • Number of gyrations: adjustable up to 512
  • Test programmable either by number of gyrations or specimen height
  • Communication with PC: RS 232
  • Power rating: 1000 W
  • Dimensions (wxdxh): 600x650x1150 mm
  • Weight approx.: 190 kg
 
 

Ordering info

76-PV0251 
PAVELAB GYROCOMP research gyratory compactor featuring continuous shear measurement during compaction. Internal angle of gyration set to 1.16° to AASHTO T312/ASTM D6925.
230 V, 50-60 Hz, 1 ph

76-PV0251/Z 
PAVELAB GYROCOMP Research Gyratory compactor featuring continuous shear measurement during compaction. Internal angle of gyration set to 1.16° to AASHTO T312/ASTM D6925.
110 V, 60 Hz, 1 ph

76-PV0251/E 
PAVELAB GYROCOMP Research gyratory compactor featuring continuous shear measurement during compaction. Internal angle of gyration set to 0.82° to EN 12697-31 Annex C. 230 V, 50-60 Hz, 1 ph

76-PV0251/EZ 
PAVELAB GYROCOMP Research gyratory compactor featuring continuous shear measurement during compaction. Internal angle of gyration set to 0.82° to EN 12697-31 Annex C.
110 V, 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-PV0251 76-PV0251/Z and the 76-PV0251/E 76-PV0251/EZ versions, is the angle of gyration, factory set to 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.

Accessories

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-PV0250/5
Cylinder 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-PV0250/4 
Accessories to compact 100 mm dia. specimens including 100 mm height calibration device

Motorized extruder mounted on a table with wheels

76-PV0251/15 
Universal motorized extruder mounted on a working table with wheels. 230 V, 50-60 Hz, 1 ph

76-PV0251/15Z 
Universal motorized extruder mounted on a working table with wheels. 110 V, 60 Hz, 1 ph

Air compressor

76-PV0250/7 
Low noise air compressor. 230 V, 50 Hz

76-PV0250/7Y 
Low noise air compressor. 220 V, 60 Hz

76-PV0250/7Z 
Low noise air compressor. 110 V, 60 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

Internal angle measurement apparatus (ILS)

76-PV0255

ILS Internal angle measurement apparatus complete set

76-PV0255/1
Calibrator blocks for ILS, set of two different angles, supplied with factory certificate 

Documents

Partner's Documents