• Electromechanical Gyratory Gompactor

Electromechanical Gyratory Gompactor

  • High precision, robust load mechanism combined with an extremely rigid frame assures high accuracy and repeatability
  • Quick and easy manual/mechanical adjustment of the gyratory angle shown on the display 
  • User defined axial stress and speed of rotation

A robust precision-engineered steel structure incorporating the EMS Electromechanical servo-actuation mechanism for vertical load application and "Orbital" proprietary gyration and mold 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 touch screen control panel shows the real-time test graph  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 can be used as part of your Superpave performance based testing program.


Main Features:

  • High precision, robust load mechanism combined with an extremely rigid frame assures high accuracy and repeatability
  • Load cell fitted directly on the vertical actuator for accurate load measurement and feedback control
  • Quick and easy manual/mechanical adjustment of the gyratory angle shown on the display 
  • User defined axial stress and speed of rotation
  • Sliding transparent door with safety interlock
  • Catch tray to collect expelled liquids using perforated moulds
  • Fresh concrete configuration available
  • Easy control using the integrated 7" colour touchscreen panel or connected PC
  • User friendly PC software for data analysis and tests set up. Remote communication is available to receive immediate diagnostics
  • Automatic data saving on USB or on Windows PC
  • Lightweight yet robust moulds strictly comply with international Standards
  • Safe and easy mould insertion and extraction with automatic lifting ensures low effort for the operator and higher productivity
  • Simultaneous extraction of last specimen for higher productivity
  • Easy specimen extraction with the integrated extruder 
  • Real-time direct shear and torque resistance measurement. Automatic calculation of the compaction energy (optional)
Model Galileo 78-PV20G0X
Consolidation pressure 10 – 1000 kPa for 150 mm diam.
25 – 2200 kPa for 100 mm diam.
Gyratory motion and Vertical load Electromechanical
Angle adjustment Manual
Gyratory angle range 0 -3° ±0.01
Gyratory angle measurement Angle measured and displayed during test
Zero angle at the end of the test No
Speed of gyration 5 – 60 rpm (120 on request)
Number of gyrations 0 -9999
Integrated Shear measurement Yes (optional)
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 Available as option
Extruder Available as option (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)
Dimensions (w x d x h) 480 x 900 x 2150 mm
Weight approx. 400 kg