Gyratory Compactors for Cement and Concrete - GALILEO

This method, very popular in Scandinavia, is used for mix design and quality control mainly in concrete products plants, where low workable and zero slump concrete is used (for such products as hollow-core slabs, tubes and paving blocks).
The method is used for: mix design simulating selected production processes specimen preparation for strength test (fresh and cured) research of mix related phenomena (workability, curing time, admixtures etc.).

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 machine is equipped with 100 mm diameter mould with stripping accessory and process­es in real time the evolution of sample density versus the number of cycles and plots the compaction curve.

It's possible to upgrade the machine in order to measure the Shear during compaction in kN/ m2. Shear is a measuring parame­ter useful for a deeper selection/ dosage and tuning of no-slump concrete components. For in­stance, a very small change in water and plasticizer can shift no­tably the positioning of max shear value along the compaction curve. Increase of water and plasticizer generally shift the max shear val­ue toward the first gyratory cycles; instead the decrease of water and plasticizer shift the max shear to­ward the end of compaction.

  • Ideal for mix design of the various types of No-Slump Concrete mixtures requested for production of: paving blocks, concrete paving slabs, rolled compaction concrete, masonry blocks, curbstones, roofing tiles, sewage pipes, hollow core slabs, structural members, extruded fresh concrete elements, concrete road construction with slip form paving finishers, in general directly stripped products.
  • Conform to Scandinavian standard NT BUILD 427 - Concrete, fresh: Compactability with IC-tester (intensive compaction tester).
  • Load cell fitted directly on the vertical actuator for accurate load measurement and feedback control
  • User defined axial stress and speed of rotation
    Easy control using the integrated 7" colour touch-screen control panel or connected PC.
  • Real-time direct shear and torque resistance measurement. Automatic calculation of the compaction energy, an important parameter for research (optional).
  • Automatic weight acquisition and density calculation with the integrated balance (optional).


NT Build 427

Technische specificaties

Technical Specifications

Consolidation pressure10 – 1000 kPa for 150 mm diam.
25 – 2200 kPa for 100 mm diam.
Gyratory motion and
Vertical load
Angle adjustmentManual (included) / Motorized (optional)
Gyratory angle range0 -3° ±0.01
Gyratory angle measurementAngle measured and displayed during test plus closed loop control
Zero angle at the end of the testYes (optional)
Speed of gyration5 – 120 rpm 
Number of gyrations0 -9999
Integrated Shear measurementYes (optional)
Moulds dimensions100 and 150 mm diam., 250 mm height.
User interface7” 16:9 Touch screen color display
(PC for data analysis)
ConnectionLAN - Ethernet
PC SoftwareYes (optional)
ExtruderManual (included) / Motorized (optional)
BalanceYes (optional)
Minimum specimen height50 mm
Maximum specimen heightUp to 200 mm depending on mix type
Height accuracyBetter than 0,1 mm
Suitable for water pouring testYes
(w x d x h)
480 x 900 x 2150 mm
Weight approx..420 kg

Order nummers

  • 54-C20C02: GALILEO Fully Electromechanical Concrete Gyratory compactor. Conforming to Nordtest Build 427. 230 V / 50-60 Hz / 1 ph.
  • 54-C20C04: GALILEO Fully Electromechanical Concrete Gyratory compactor. Conforming to Nordtest Build 427. 110 V / 60 Hz / 1 ph .

Accessoires & toebehoren


  • 78-PV0250/2: Hardened cylinder mould 150 mm dia complete with top and bottom plates.
  • 78-PV0250/3: Distance piece 150 mm dia x 50 mm for low samples
  • 54-C20C02/SW: PC software, suitable for Galileo Concrete Gyratory compactor
  • 54-C20C02/UP1: Shear measurement system, suitable for Galileo concrete gyratory compactor (to be specified at time of order)
  • 54-C20C02/UP2: Integrated electromechanical extruder, suitable for Galileo concrete gyratory compactor (To be specified at time of order)
  • 54-C20C02/1: 100 mm mould for fresh concrete gyratory compactors
  • 54-C20C02/2: Accessories to compact dia 150 mm specimens. Mould not included.                          
  • 54-C20C02/UP3: Electronic balance 30 kg cap. x 1 g to weight the sample.
  • 54-C20C02/UP4: Upgrading for the motorized regulation of the gyratory angle