Asphalt Prism Shearbox Compactor PReSBOX


The PReSBOX® provides the latest in asphalt speciment preparation and mix evaluation technology. PReSBOX® produces high quality asphalt prisms from which beams and cylinders with excellent air voids distribution, homogeneity and particle orientation can be cut.

The unique shearing action of the PReSBOX® closely replicates the conditions under which asphalt is placed in the field and produces specimens with excellent homogeneity and volumetic properties, giving an exceptional measure of workability.

The PReSBOX® also provides an accurate measure of the workability (relative effort required for compaction) of Hot Mix Asphalt (HMA) needed in the field to achieve a target void content.
The PReSBOX® Shearbox Compactor features a PC interface for user entry of compaction parameters, and provides a real-time graphic display of data, e.g. specimen height, vertical stress and air voids per cycle.

  • The PReSBOX produces a prismatic specimen with nominal dimensions of 450 mm (lenght) x 150 mm (width) x 120 to 185 mm (height)
  • Asphalt prisms prepared in the PReSBOX compactor can be sawn or cored to produce 4-6 prismatic beams or 1-4 cylindrical specimens
  • The PReSBOX can be operated by a single person
  • Produces specimens with excellent air void distribtion and particle orientation
  • Designed for an easy unlocking of the compaction mould, facilitating an effortless speciment extraction at safe height, handling and user safety


  ASTM D7981

Technische specificaties

Technical Specifications

  • Shearing motion: Electromechanically driven at 4°
  • Vertical stress: Pneumatic user defined up to 2 MPa
  • Specimen size: 450 x 150 x 120 - 185 mm (l x w x h)
  • Integrated specimen extruder
  • Specimen Loading: Easy loading with included accessory kit (includes: distribution chute, levelling tool & comb)
  • Compaction Frequency: 3.7 cycle/min +/- 16 s/cycle
  • Mould hardness: 50 Rockwell C (minimum)
  • Platen hardness: 50 Rockwell C (minimum)
  • Mould surface: finish smoother than 1.6 µm
  • Loading platen size: 448 x 149 mm (l x w)
  • Loading platen finish: smoother than 1.6 µm
  • Numbers of cycles: user definable (unlimited)
  • Air supply: clean dry air supply at minimum 600 kPa
  • Size (h x w x d): 1540 x 1765 x 1050 mm
  • Weight: 1100 kg

Order nummers


IPC Global PReSBOX - Shearbox Compactor - 208-240V / 50-60Hz / 1ph.


Accessoires & toebehoren


77-PV46202: Heater to pre-heat the box walls. 230V/50-60Hz/1ph 77-PV46204: Heater to pre-heat the box walls. 110V/60Hz/1ph 79-PV71102: Pneumatic Filtration Kit - Wall Mount 12 Bar