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polished stone value aggregate

Polished Stone Value - Test Procedures and Equipment

The Polished Stone Value of aggregate gives a measure of resistance to the polishing action of vehicle tyres under conditions similar to those occurring on the surface of a road. The action of road vehicle tyres on road surfaces results in polishing of the top, exposed aggregate surface, and its state of polish is one of the main factors ...

THE POLISHED STONE VALUE OF AGGREGATES AND IN …

THE POLISHED STONE VALUE OF AGGREGATES AND IN-SERVICE SKIDDING RESISTANCE. For many years, aggregates for use in new surfacings have been selected according to their ability to resist polishing, as measured by their Polished Stone value (PSV).

Polished Stone Value ( PSV ) Extended Polishing

The deriving of the polished stone value ( PSV ) does not give a good indication of on road performance. Surfacing aggregate is mounted on a wheel and is subject to three hours of coarse polishing, followed by three hours of fine polishing. The friction come degree of aggregate polishing is derived by carrying out a British

Polished Stone Value of Volcanic Rocks Used as Aggregates ...

The polished Stone Value (PSV) of each rock type has been determined following the respective standard. According to Czech standards for road surfacing, PSV above 53 is required, PSV over 56 is required for high traffic and dangerous road sections. From the 39 rock types studied, only 17 (3 basaltic rocks, 5 spilites, 5 melaphyres, 2 rhyolites ...

Predicting Braking Distance based on the Polished Stone ...

the polished stone value [9]. This European Standard specifies the method for determining the polished stone value (PSV) of a coarse aggregate used in road surfacing. PSV is a measure of the resistance of coarse aggregate to the polishing action of vehicle tires under conditions similar to those occurring on the surface of aroad.

Polished Stone Value Extended Polishing

• Friction of the polished aggregate is measured by British Pendulum Number ( BPN ) at 3 hours of fine polishing • However, PSV value is indicative and the aggregate may well polish further • Number of aggregate types selected and subjected to fine polishing regime with polishing times of 2,3,4,6,8 and 12 hours Extended PSV Polishing

Accelerated polishing machine (PSV), Aggregates testing ...

The PSV test calculates a Polished Stone Value for aggregates used in road surfaces, which gives a measure of the resistance to skidding. The test is carried out by using two machines, S882 - the Accelerated Polishing Machine, and S885 - Skid Tester, (see separate Data Sheet for this machine).

Suppliers of Surfacing Aggregate – Polished Stone Values

This chart shows Polished Stone Values (PSV's) assessed in accordance with TNZ M/6:2004, as at September 2004. This chart is an indication only of the PSV of sealing aggregate available from these sources. This chart is not an exhaustive list of all sealing chip suppliers in New Zealand.

THE POLISHED STONE VALUE OF AGGREGATES AND IN-SERVICE ...

THE POLISHED STONE VALUE OF AGGREGATES AND IN-SERVICE SKIDDING RESISTANCE. For many years, aggregates for use in new surfacings have been selected according to their ability to resist polishing, as measured by their Polished Stone value (PSV).

polished stone value | Encyclopedia.com

polished stone value See AGGREGATE TESTS. Source for information on polished stone value: A Dictionary of Earth Sciences dictionary.

INTERIM ADVICE NOTE 156/12 Revision of Aggregate ...

Revision of Aggregate Specification for Pavement Surfacing IAN 156/12 Page 2 of 8 Sept 2012 1. Introduction This IAN provides updated advice on the selection of polished stone value (PSV) of aggregates used in pavement surfacing. Research has shown that the frictional properties of

(PDF) Dynamic Model of Polished Stone Value Attenuation in ...

The polished stone value (PSV) of coarse aggregate is closely related to pavement skid resistance and traffic safety. However, the determination of the PSV of coarse aggregate is conventionally a ...

Parameters influencing the polished stone value (PSV) of ...

1. Introduction. Resistance to polishing of aggregates refers to a mechanical property of primary importance as it impacts skid resistance variations of road surface courses,,,,,, .Over time, aggregate microtexture is polished by the traffic, especially that of heavy vehicles, yielding the gradual reduction of skid resistance to a value of equilibrium,,, .

Skid Resistance Testing of Aggregates (Polished Stone Value)

Skid resistance is one of many important aggregate properties, the polished stone value test is performed on aggregate particles that pass a 10 mm sieve and ...

(PDF) Parameters influencing the polished stone value (PSV ...

Polished Stone Value (PSV) [4,7]. P hysically, PSV is a corrected residual friction coe fficient calculated from the 41 measurement of kinetic energy loss when the rub ber slider is dragged on the ...

Parameters influencing the polished stone value (PSV) of ...

This is then rotated for a period of time while a rubber tyre is loaded onto the aggregate surface and a polishing medium fed onto the interface. At the end of the polishing process, the residual friction of each specimen is measured and corrected against that of control stone specimens to calculate their polished stone value (PSV), .