Gyratory Compactors

EN 12697-10 | EN 12697-31 | AASHTO T312 | ASTM D6925 | AS 2891.2.2 | NZTA M10
We highly recommend IPC Global's fully electro-mechanical gyratory compactors GALILEO and GALILEO Research, comprising of 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 repeatable test results.

78-PV20G02: Galileo, fully Electromechanical gyratory compactor.
230 V, 50/60 Hz, 1 ph

78-PV20R02: Galileo Research, fully Electromechanical gyratory compactor, including integrated extruder, shear measurement, EmS motorized regulation of the gyratory angle and displayed on the control panel, PC software for data analysis.
230 V, 50/60 Hz, 1 ph

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)
  • Perfect gyratory angle with real-time closed loop automatic angle adjustment recovering compliance and minor strains independently from the vertical loads
  • Possibility to automatically set the zero angle at the end of the test
  • Automatic weight acquisition and density calculation with the integrated balance (optional)

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.
Internal angle measurement apparatus ILS

78-PV0255: ILS device for internal angle measurement for Gyratory compactors, conforming to EN 12697-31, annex C. Complete with Excel Macro and PC connection cable                  

Main features:
  • Accurate calibration of internal angle of Gyratory compactors and verification of frame stability, to international Standards
  • Quick and accurate measurement of the internal gyratory angle: less than 30 minutes
  • No hot mix required: when, placed into the mould, the device reproduces the internal shearing forces generated by the hot mix during compaction
  • Ideal for periodic verification of the internal gyratory angle
  • Compatible with any make of Gyratory compactors
  • Battery operated

The importance of a precise gyratory angle has been widely noted. The measurement of the internal angle represents, in practice, the most accurate method of calibration.
This method comprises two individual values: angle between cylinder and top plate and angle between cylinder and bottom plate.

The average of these two values is taken as the "internal angle".

To date the internal angle calibration of gyratory compactors has been considered a difficult task leading to wide variations in results even between machines of the same brand.

The ILS device can also be used on any other makes of gyratory compactors.