Dec 20, 2010· Calculation of Polished Stone Value 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 ...
Get PriceTo understand the polished stone value of a stone aggregate it is important to recognise the factors that control skid resistance from raw material, through laboratory measurement and onto insitu ...
Get PriceOct 18, 2018· Celtest have the capability to test aggregates for their Polished Stone Value (PSV) to BS EN 10978. We have expanded our capacity to accommodate continuing increased demand. For more information please contact us to discuss further. Suitable for – A
Get PriceDetermination of the polished stone value. BS EN 10978 describes the test method for mechanical and physical properties of aggregates. This part of the BS EN 1097 series of standards concentrates on determining the polished stone value (PSV) of a coarse aggregate used in road surfacing.
Get PriceFeb 04, 2012· The Polished Stone Value (BS 812: Part 3) Gives A Measure Of Resistance Of Road Stone To The Polishing Action Of The Pneumatic Tire. Under Conditions Similar To Those Occurring On The Surface Of The Road Where The Surface Of The Road Consists Largely Of Road Stone, The State Of Polish Of The Sample Will Be One Of The Major Factors Affecting The Resistance Of The Surface …
Get PricePOLISHED STONE VALUE / RESISTANCE to POLISHING (AGGREGATE) Product Code SCTA0810 Accelerated Polishing Machine (PSV), 220240 V 5060 Hz SCTA0812 Corn Emery 5 kg, for SCTA0810
Get PriceApprovals of new aggregate sources must be accompanied by in service data from a reputable source and will be at the absolute discretion of the Infrastructure Asset Manager. Polished Stone Values for Surface Treatments . Accepted PSV’s for Aggregates used in Surfacing and Surface Dressing Treatments 22 August 2012 . 3
Get PriceCalculation of Polished Stone Value 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 …
Get PricePolishedpaver value determination The polished pavervalue determination makes use of the BS812 aggregate abrasion method to polish the samples of pavers. the abrasion lap is modified by attaching a standard rubber disk, and corn emery and emery flour abrasives are fed to the samples under test in the same way as in the BS812 determination.
Get Price• Aggregate sample on a curved mould, the surface is subject to three hours of coarse polishing, followed by three hours of fine 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
Get PriceTwo of the key properties of aggregates used for HFS are polish resistance and abrasion resistance, generally reported in terms of polished stone value (PSV) and aggregate abrasion value (AAV) or LA Abrasion Value. The polished stone value is a measure of how resistant an aggregate is to polishing under traffic wear.
Get PriceMicrotexture of road aggregates wears away under traffic action in the course of time and gets polished. Aggregates resistance to polishing and their ability to maintain the microtexture are measured in the laboratory by polished stone value (PSV). The standard test method for measuring PSV is costly and time consuming. In this study, efforts have been made to develop a model for estimation ...
Get PriceThe Polished Stone Value of the source rock shall be measured by a Polished Stone Value test on the product and the assigned Polished Stone Value shall comply with the test value shown for the different surfacing applications in Table
Get PriceThis British Standard, a part of the BS 812 series, describes the method for determining the polishedstone value (PSV) of an aggregate. The main changes …
Get PricePolished stone value (PSV) This is a most important test that an aggregate can undergo if it is to be used as a road surface course. If an aggregate polishes too much under the polishing effect of vehicle tyres, the road surface becomes very slippery, especially when wet, and the …
Get PriceA new reference aggregate for PAFV testing. Polished aggregate friction value (PAFV) tests are conducted in Australia to measure the resistance of aggregates to the polishing action of vehicle tyres on the road. Two versions of the PAFV test are used in Australia: the …
Get PriceTo understand the polished stone value of a stone aggregate it is important to recognise the factors that control skid resistance from raw material, through laboratory measurement and onto insitu ...
Get PriceWhat is the abbreviation for Polished Stone Value? What does PSV stand for? PSV abbreviation stands for Polished Stone Value.
Get Priceof the work was to review aggregate performance in service so that the Table in the Design Manual For Roads and Bridges Volume 7, which indicates the Polished Stone Value (PSV) required for given circumstances, could be revised to take account of presentday conditions and requirements. Initially, the project was intended to provide information
Get Priceen The paper reports some analyses of polished stone values for the aggregates most commonly used in Norway and considers whether there is a correlation between the polished stone value and in situ friction for mixtures of aggregates with varying polishing and wearing properties.
Get PriceOct 25, 2016· At present, PSV (Polished Stone Value) is the only parameter relating to the microtexture properties of an aggregate which can be measured in a standardised manner and which has been related to traffic and site conditions. It therefore remains an appropriate property to use in specifications, provided that its limitations are recognised. Themes:
Get PricePolished stone value (PSV) This is a most important test that an aggregate can undergo if it is to be used as a road surface course. If an aggregate polishes too much under the polishing effect of vehicle tyres, the road surface becomes very slippery, especially when wet, and the …
Get Pricepolished stone value See AGGREGATE TESTS. Source for information on polished stone value: A Dictionary of Earth Sciences dictionary.
Get PriceJul 29, 2015· 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 retained on a mm grid sieve.
Get PriceThe remaining tests, such as Polished Stone Value, Aggregate Abrasion Value, and Magnesium Sulphate Soundness, have been retained virtually intact. Aggregate strength is now assessed using the Los Angeles test, which has replaced the Ten Percent Fines Value. Other European tests, such as Methylene Blue (level of harmful fines), Shape
Get PriceDetermination of the polished stone value BS EN 10978 describes the test method for mechanical and physical properties of aggregates. This part of the BS EN 1097 series of standards concentrates on determining the polished stone value (PSV) of a coarse aggregate used in road surfacing.
Get PriceFor 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). However, decisions are now having to be made for more heavilytrafficked roads than were included in the original research, and ...
Get PriceDec 15, 2015· 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) , .
Get PriceThis 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.
Get PriceResults of a European roundrobin aiming to identify and quantify scattering sources impacting the polished stone value (PSV) of aggregates, and to assess the reference PSV of Herrnholzer granite, are presented and discussed. This reference value corrected against quartz dolerite control stone is calculated as PSV ref HE = ± ...
Get PriceDownload Citation on ResearchGate | Polished stone value of blended aggregate for asphalt wearing course | In view of the current situation of China that the high quality antipolishing aggregate ...
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