These shear box assemblies are designed to be used with our 27-WF20D60 Digishear, 27-WF21A60 Autoshear and 27-WF21E80 Shearmatic shear testing machines.
Manufactured from brass and designed to contain the water that surrounds the specimen.

They consist of a square box with a rigid walled round or square hole complete with:
– adapter loading pad
– retaining plate
– 2 plastic grids
– 2 perforated plastic grids
– 2 bronze sintered porous plates.

Sample cutter and extrution dolly for sample preparation should be oreded separately (see accessories)

• • Completely electromechanically operated
  • Possibility to program user defined procedures as free combination of load and displacement (or combined) controlled cycles
  • Completely electromechanically operated
  • Conforming to EN 12697-33, 5.2 method and ASTM D8079
  • 21” All-in-one touchscreen PC controlled , PC and software included
  • Includes the compaction procedure defined in the brand new EN 12697-33 method 7.3, providing at the beginning a controlled displacement compaction which can grant a flat surface followed by a load compaction phase , which can replicate the real compaction on the road surface
  • Base and foot adjustable heating system available as option
  • Mould dimensions: 500 x 400, 500 x 300, 400 x 300, 300 x 300 and 320 x 260 mm, 195 mm height
  • Compaction direction in the longest (major) mould dimension to obtain specimens of the proper length conforming to Standard
  • Vertical balanced of sliding cover for easy access and complete three side view
  • Maximum compaction load 30 kN
  • User defined controlled linear speed up to 300 mm/sec and adjustable pause at the mould inversion point
  • Ideal for producing test beams for 4-Point bending (EN 12697-24, EN 12697-26, AASHTO T321) and slabs down to 38 mm
  • Vibrating roller option, adjustable from 10 to 50 Hz
  • PRO-COMPACT* closed loop control slabs
  • Customization of compacting cycle which can be saved and recalled from the database
   

  *PRO-COMPACT closed-loop is an innovative mechanical and electronic control that combines orthogonality of the load, pendulum motion of the head and sinusoidal non-friction forward-reverse carriage movement. This results in an optimally compacted sample that features Planarity Regularity and hOmogeneity (PRO). The combined load/displacement compaction procedure provides at the beginning of the test a controlled displacement compaction, which can grant a flat surface of the compacted slab, followed by a load compaction phase, which can replicate the real compaction on the road surface.