General Description

A robust precision-engineered steel structure incorporating the EmS Electromechanical servo-actuation mechanism for vertical load application and "Orb...
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A robust precision-engineered steel structure incorporating the EmS Electromechanical servo-actuation mechanism for vertical load application and "Orbital" proprietary gyration and mould rotation system (Patent pending) delivering highly accurate and repeatabletest results, together with stiffness and angle stability values that fall comfortably within the limits defined in EN 12697-31.

The large 7" user-friendly integrated touchscreen control panel shows the test graph in real time.
The on-board firmware includes nine languages and also offers the option to control the tests from a PC.

A traceable calibration certificate conforming ASTM and AASHTO Standards is also included.

Operating principle

Standard 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 with a vertical static force applied by a mechanical head.

The method can be used for:

  • Preparation of specimens of a given height at a predetermined density, for subsequent testing of their mechanical properties;
  • Derivation of a curve of density versus number of gyrations;
  • Void content for a given number of gyrations.

Standards apply to bituminous mixtures (made either in laboratory or from on-site sampling), with aggregates not larger than 37.5 mm. During operation the bituminous mixture is contained in a cylindrical mould (100 or 150 mm diameter). Compaction is achieved by the simultaneous application of a low-static compression and a shearing action, which results in the motion of the centre-line 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 gyratory compactor GALILEO RESEARCH can be used as part of your Superpave performance based testing program.



Technical Specifications

Model Galileo Research 78-PV20R0X
Consolidation pressure 10 – 1000 kPa for 150 mm diam.
25 – 2200 kPa for 100 mm diam.
Gyratory motion and
Vertical load
Angle adjustment EmS Electromechanical Servoactuation
Gyratory angle range 0 -3° ±0.005
Gyratory angle measurement Angle measured and displayed during test plus closed loop control
Zero angle at the end of the test Yes (automatic procedure, user selectable)
Speed of gyration 5 – 60 rpm (120 on request)
Number of gyrations 0 -9999
Integrated Shear measurement Yes
Moulds dimensions 100 and 150 mm diam., 250 mm height.
User interface 7” 16:9 Touch screen color display
(PC for data analysis)
Connection LAN - Ethernet
PC Software Included
Extruder Included (electromechanical)
Balance Available as option with an accuracy of 1 g 
Minimum specimen height 50 mm
Maximum specimen height Up to 200 mm depending on mix type
Height accuracy Better than 0,1 mm
Suitable for water pouring test Yes
Suitable for concrete/cement testing Yes (on request)
(w x d x h)
480 x 900 x 2150 mm
Weight approx.. 420 kg



  • EN 12697-10
  • EN 12697-31
  • AASHTO T312
  • ASTM D6925
  • AS 2891.2.2

Accessories and Spare Parts



Galileo & Galileo Research range of accessories
Fully Electro-Mechanical Gyratory Compactor — GALILEO