Select Page

Slurry Testing Machine

High quality, simple and reliable machine, complies to EN 12774-5 for the determination of wearing and minimum binder content

The slurry surfacing test machine CRT-STM also known as Wet Track Abrasion Test Machine was developed to simply and reliably determine the minimum binder content of the mix under wet track abrasion conditions according to the determination of wearing test: EN 12274-5.


  • EN 12274-5
  • ASTM D3910
  • ISSA TB100

Key Features

  • Abrasive head according to EN 12274-5
  • Planetary gear system providing the abrasive head with rotating speed of 144rpm for 61 complete cycles of the planetary system
  • Test bath fitted with three spindles to fix the test base plate
  • 310mm diameter and 5mm thick test base plate with 3 or 4 knurled head screw fasteners
  • Hose can be supplied made from 80° shore hardness rubber. The rubber is reinforced with double cord surface
  • The hose has an internal diameter 19mm and an external diameter of 31mm
  • Integral timing device stops the test automatically after 300 seconds
  • Type A,B,C and D Ring shaped annular metal moulds available

Key Uses

  • Determination of wearing
  • Determination of minimum binder content


Accessories are not included in the price of main device (unless stated otherwise) and may be purchased separately if required.

CRT-STM-AH Abrasion hose for SWT to EN 12274-5 – 127mm length
CRT-STM-AH3 Abrasion Hose for SWT to EN 12274-5 – 3 meter length
CRT-STM-AH5 Abrasion Hose for SWT to EN 12274-5 – 5 meter length
RT-STM-LP Levelling Plate
CRT-STM-M10 Mould type B 10,0 +/- 0.5mm
CRT-STM-M13 Mould type C 13,00 +/- 0.5mm
CRT-STM-M19 Mould type D 19,0 +/- 0.5mm
CRT-STM-M6.3 Mould – Ø279x295mm Type A Wall Thickness 6.3mm
RT-STM-RINGA Type A 6,3+- 0.5mm BS EN 12274-5:2003 Ring
CRT-STM-RINGB Type B 10,0 +- 0.5mm BS EN 12274-5:2003 Ring
CRT-STM-TP Test piece bases


Technical specifications are subject to change without notice.

Planetary Speed 144rpm for 61 complete cycles
Vertical kinetic friction force 22.3N
Test base plate diameter mm 310
Test base plate thickness mm 5
Test piece base density 700g/m2
Test bath dimensions mm (WxDxH) 400 x 400 x 125
Automatic timer duration 300 sec
Hose hardness 80° shore
Hose with standing pressure 2533MPa
Hose internal diameter mm 19
Hose external diameter mm 31
Dimension mm (W x D x H) 450 x 460 x 560
Weight (approx.) Kg 35
Electrical Supply 220-240 Volts 50Hz @ 13A (others available)

Calibration & Maintenance

Calibration, Annual Service and Maintenance Contracts are available for this device.
Please enquire for further details. Note: This device should be checked and calibrated annually.