Accelerated Polishing Machine to BS812-114 EN1097-8

Accelerated Polishing Machine to BS812-114 EN1097-8

for Polished Stone Value to 

BSEN 1097-8:2000 (formerly BS812 pt114: 1989), ASTM E303, ASTM D331-91

British StandardBS812-114
Other StandardsEN1097-8
Approx. Weight (kg)205
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The PSV test calculates a Polished Stone Value for aggregates used in road surfaces, and gives a measure of the resistance to skidding.

The test is carried out by using two machines, the Accelerated Polishing Machine, and the Skid Resistance Tester, (AG190). The Accelerated Polishing Machine polishes samples of aggregates, simulating actual road conditions.

Test Procedure

Fourteen specimens are clamped around the 'road wheel' of the PSV machine, and subjected to two stages of polishing by a loaded rubber tyre. First by corn emery, and secondly by emery flour.


  • Heavy welded steel mainframe, standing in adjustable pads.
  • High alloy ground main spindle running in sealed ball bearings additionally protected by a labyrinth seal, spindle axially loaded to eliminate end play.
  • Adjustable motor speed control with adjustable timing belt drive.
  • Digital display preset timer and revolution counter.
  • Specimens manufactured and easily removed from accurately machined moulds.
  • Specimens located on 'Road Wheel' by rubber rings and held by simple side fixing.
  • Tyred wheel easily removed for replacing tyres.
  • Water gravity fed from high level tank through calibrated flow meter.
  • Used abrasive and water collected in removable tray.
  • Loaded tyre raised and lowered to the running surface by mechanical lifting device.
  • Electrical supply protected by 'no volt' release.
  • Feeder and control circuits 24 volt for safety.
  • Protection by easily removed covers and guards.
  • Safety switch to ensure removable safety covers are in place.


Packed dimensions 820 x 820 x 1260mm high
Packed weight 205kg
Volume 0.79 cubic metres
Height - Frame 1230mm
Height - Water tank 1550mm
Electrical Supply 230V/110V 50/60Hz 1ph 13 amp

Operating instructions and wiring diagrams are supplied with each machine.


Click Click to view a PDF file of the User Guide

A user guide is available to download from the Impact web site