CEN/TS 15901-8:2009
(Main)Road and airfield surface characteristics - Part 8: Procedure for determining the skid resistance of a pavement surface by measurement of the sideway-force coefficient (SFCD): SKM
Road and airfield surface characteristics - Part 8: Procedure for determining the skid resistance of a pavement surface by measurement of the sideway-force coefficient (SFCD): SKM
This Technical Specification describes a method for determining the wet-road skid resistance of a surface by measurement of the sideway-force coefficient SFCD.
The method provides a measure of the wet-road skid resistance properties of a bound surface by measurement of sideway-force coefficient at a controlled speed.
This Technical Specification covers the operation of the sideway-force Coefficient Machine (SKM) developed in Germany.
The SKM skid resistance measurement technique determines the sideway-force acting on a particular, angled wheel.
The SKM measurement technique has been developed for Network-wide measurements of skid resistance during road monitoring and assessment of pavement surfaces on German federal motorways and highways. It is also applicable to skid resistance measurements for road construction contracts.
The skid resistance of a pavement is determined by friction measurements and measurements of pavement texture. Where measurement of pavement texture is required the standard for this measurement and the device is described in EN ISO 13473-1.
Oberflächeneigenschaften von Straßen und Flugplätzen - Teil 8: Verfahren zur Bestimmung der Griffigkeit von Fahrbahndecken durch Messung des Seitenreibungsbeiwertes (SFCD): das SKM-Griffigkeitsmessgerät
Diese Technische Spezifikation beschreibt ein Verfahren für die Bestimmung der Nassgriffigkeit von Fahr-bahndecken durch Messung des Seitenreibungsbeiwertes SFCD.
Dieses Verfahren liefert ein Maß für die Nassgriffigkeitseigenschaften einer gebundenen Oberfläche durch Messung des Seitenreibungsbeiwertes bei geregelter Geschwindigkeit.
Diese Technische Spezifikation behandelt den Betrieb des in Deutschland entwickelten Seiten-Kraft-Mess-fahrzeugs (SKM).
Beim SKM-Griffigkeitsmessverfahren wird die auf ein spezielles, schräg laufendes Rad wirkende Seitenkraft bestimmt.
Das SKM-Messverfahren wurde entwickelt, um im Rahmen der Straßenüberwachung und der Bewertung von Fahrbahndecken auf deutschen Autobahnen und Bundesstraßen das gesamte Netz umfassende Griffigkeits-messungen durchführen zu können. Es eignet sich darüber hinaus für die Anwendung bei Griffigkeitsmessun-gen für Straßenbauaufträge.
Die Griffigkeit einer Fahrbahn wird mit Hilfe von Reibungsmessungen und Messungen der Fahrbahntextur ermittelt. Das Normverfahren für die Messung der Fahrbahntextur, falls diese erforderlich ist, und das dafür zu verwendende Messgerät sind in EN ISO 13473 1 beschrieben.
Caractéristiques de surface des routes et aéroports - Partie 8 : Mode opératoire de détermination de l'adhérence d'un revêtement de chaussée en procédant au mesurage du coefficient de frottement transversal (CFTD): le SKM
La présente Spécification technique décrit une méthode permettant de déterminer l’adhérence d’une chaussée mouillée par mesure du coefficient de frottement transversal (CFTD).
La méthode permet de mesurer les propriétés d’adhérence d’une couche de roulement d’une chaussée mouillée, par mesure du coefficient de frottement transversal à vitesse contrôlée.
La présente Spécification technique porte sur le fonctionnement d’un appareil de mesure du coefficient de frottement transversal (SKM) développé en Allemagne.
La technique de mesure de l’adhérence avec le SKM permet de déterminer le frottement transversal agissant sur une roue spéciale envirée avec un angle donné.
La technique de mesure SKM a été développée pour mesurer l’adhérence du réseau routier et autoroutier allemand. Elle s’applique également aux mesures de l’adhérence dans le cadre des contrats de construction routière.
L’adhérence d’une chaussée est déterminée par mesures du frottement et de la texture de la chaussée. Si une mesure de la texture de la chaussée est requise, le principe et l’appareil de mesure sont décrits dans la norme EN ISO 13473-1.
Značilnosti cestnih in vzletnih površin - 8. del: Postopek določanja torne sposobnosti vozne površine z meritvijo količnika trenja poševno vodenega kolesa (SFCD) : SKM
Ta tehnična specifikacija opisuje metodo določanja torne sposobnosti površine mokre ceste z meritvijo količnika trenja poševno vodenega kolesa SFCD. Ta metoda določa merilo lastnosti torne sposobnosti omejene površine mokre ceste z meritvijo količnika trenja poševno vodenega kolesa pri nadzorovani hitrosti. Ta tehnična specifikacija zajema delovanje opreme Coefficient Machine (SKM) za poševno vodena kolesa, razvita v Nemčiji. Tehnika merjenja torne sposobnosti SKM opreme določa bočno silo, ki deluje na določeno nagnjeno kolo. Tehnika merjenja SKM opreme je bila razvita za meritve torne sposobnosti celotne mreže med nadzorovanjem ceste in ocenjevanjem voznih površin na nemških federalnih avtocestah in cestah. Velja tudi za meritve torne sposobnosti pri pogodbah o gradnji cest. Torno sposobnost površine določajo meritve trenja in meritve teksture površine. Kjer se zahteva merjenje teksture površine, je standard tega merjenja in opreme opisan v EN ISO 13473-1.
General Information
Standards Content (Sample)
SLOVENSKI STANDARD
01-februar-2010
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Road and airfield surface characteristics - Part 8: Procedure for determining the skid
resistance of a pavement surface by measurement of the sideway-force coefficient
(SFCD): SKM
Verfahren zur Bestimmung der Griffigkeit von Fahrbahndecken durch Messung des
Seitenreibungsbeiwertes (SFCD): das SKM-Griffigkeitsmessgerät
Caractéristiques de surface des routes et aéroports - Partie 8: Mode opératoire de
détermination de l'adhérence d'un revêtement de chaussée en procédant au mesurage
du coefficient de frottement transversal (CFTD): le SKM
Ta slovenski standard je istoveten z: CEN/TS 15901-8:2009
ICS:
17.040.20 Lastnosti površin Properties of surfaces
93.080.10 Gradnja cest Road construction
93.120 *UDGQMDOHWDOLãþ Construction of airports
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.
TECHNICAL SPECIFICATION
CEN/TS 15901-8
SPÉCIFICATION TECHNIQUE
TECHNISCHE SPEZIFIKATION
November 2009
ICS 93.080.20; 93.120
English Version
Road and airfield surface characteristics - Part 8: Procedure for
determining the skid resistance of a pavement surface by
measurement of the sideway-force coefficient (SFCD): SKM
Caractéristiques de surface des routes et aéroports - Partie Oberflächeneigenschaften von Straßen und Flugplätzen -
8 : Mode opératoire de détermination de l'adhérence d'un Teil 8: Verfahren zur Bestimmung der Griffigkeit von
revêtement de chaussée en procédant au mesurage du Fahrbahndecken durch Messung des
coefficient de frottement transversal: le SKM Seitenreibungsbeiwertes (SFCD): das SKM-
Griffigkeitsmessgerät
This Technical Specification (CEN/TS) was approved by CEN on 27 June 2009 for provisional application.
The period of validity of this CEN/TS is limited initially to three years. After two years the members of CEN will be requested to submit their
comments, particularly on the question whether the CEN/TS can be converted into a European Standard.
CEN members are required to announce the existence of this CEN/TS in the same way as for an EN and to make the CEN/TS available
promptly at national level in an appropriate form. It is permissible to keep conflicting national standards in force (in parallel to the CEN/TS)
until the final decision about the possible conversion of the CEN/TS into an EN is reached.
CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Cyprus, Czech Republic, Denmark, Estonia, Finland,
France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal,
Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and United Kingdom.
EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION
EUROPÄISCHES KOMITEE FÜR NORMUNG
Management Centre: Avenue Marnix 17, B-1000 Brussels
© 2009 CEN All rights of exploitation in any form and by any means reserved Ref. No. CEN/TS 15901-8:2009: E
worldwide for CEN national Members.
Contents Page
Foreword .3
1 Scope .4
2 Recommended uses .4
3 Terms and definitions .4
4 Safety .7
5 Essential Characteristics .7
5.1 Principle of measurements .7
5.2 Operating Principle .7
6 Key Characteristics .8
6.1 General .8
6.2 Test equipment .8
6.3 Measurement tyre .9
6.4 Load cell .9
6.5 Pavement wetting . 10
6.6 Device-specific correction factor . 11
6.7 Temperature measurement . 11
6.8 Clearance control system . 12
6.9 Measurement of distance travelled . 12
7 Test procedure . 12
7.1 Standard test conditions . 12
7.2 Prior to testing . 12
7.3 Operating conditions . 13
8 Data recording . 15
8.1 General . 15
8.2 Route assignment . 16
8.3 Device calibration value . 16
8.4 Measurement value corrections . 16
8.5 Average-value formation for 100-m intervals . 17
8.6 Measurement values submitted according to construction contracts . 17
8.7 Data formats . 18
9 Calibration . 18
9.1 General . 18
9.2 Temporary operating approval . 18
9.3 External control of test equipment . 18
9.4 Internal control of test equipment . 19
10 Precision . 19
11 Test report . 19
Annex A (informative) Possible events for characterizing measurement records . 21
Annex B (informative) Test certificates and test report . 23
Test certificate for temporary operating approval . 23
Test report for internal control of measurement devices used for checking the calibration . 24
Test certificate for external control measurement devices used for checking the calibration . 25
Bibliography . 26
Foreword
This document (CEN/TS 15901-8:2009) has been prepared by Technical Committee CEN/TC 227 “Road
materials”, the secretariat of which is held by DIN.
Attention is drawn to the possibility that some of the elements of this document may be the subject of patent
rights. CEN [and/or CENELEC] shall not be held responsible for identifying any or all such patent rights.
According to the CEN/CENELEC Internal Regulations, the national standards organizations of the following
countries are bound to announce this Technical Specification: Austria, Belgium, Bulgaria, Cyprus, Czech
Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia,
Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain,
Sweden, Switzerland and the United Kingdom.
1 Scope
This Technical Specification describes a method for determining the wet-road skid resistance of a surface by
measurement of the sideway-force coefficient SFCD.
The method provides a measure of the wet-road skid resistance properties of a bound surface by
measurement of sideway-force coefficient at a controlled speed.
This Technical Specification covers the operation of the sideway-force Coefficient Machine (SKM) developed
in Germany.
The SKM skid resistance measurement technique determines the sideway-force acting on a particular, angled
wheel.
The SKM measurement technique has been developed for Network-wide measurements of skid resistance
during road monitoring and assessment of pavement surfaces on German federal motorways and highways. It
is also applicable to skid resistance measurements for road construction contracts.
The skid resistance of a pavement is determined by friction measurements and measurements of pavement
texture. Where measurement of pavement texture is required the standard for this measurement and the
device is described in EN ISO 13473-1.
2 Recommended uses
The SKM measuring technique is suitable for use for the following applications:
monitoring of networks (Pavement Management);
approval of new surfacing;
measurements for project-level compliance;
investigation of surface skid resistance;
comparative measurements among different devices;
research measurements.
3 Terms and definitions
For the purposes of this document, the following terms and definitions apply.
3.1
skid resistance
property of a trafficked surface that limits relative movement between the surface and the part of a vehicle tyre
in contact with the surface
NOTE Factors that contribute to skid resistance include the tyre pressure, contact area, tread pattern, and rubber
composition; the alignment, texture, surface contamination, and characteristics of the road surface; the vehicle speed; and
the weather conditions.
The skid resistance of a road surface in Europe varies seasonally. Generally, wet skid resistance is higher in winter as a
result of the effects of wet detritus and the effects of frost and wear by tyres on microtexture and macrotexture. Wet skid
resistance is lower in summer as a result of dry polishing by tyres in the presence of fine detritus.
The change in skid resistance of a surface in service is affected by the volume of traffic and the composition of the traffic,
i.e. cars, buses, commercial vehicles of different sizes, as the tyres of these vehicles polish and/or wear away the
surfacing material in different ways. The geometry of the road will affect the change in skid resistance. Generally, tyres
polish less on straight roads than on bends.
Where the surface contains aggregate with a coating of binder, e.g. bitumen, resin or Portland cement, the skid resistance
will change as the coating is worn away by tyres.
3.2
roughness
surface texture
geometric design of the pavement surface in wavelengths ranging from a few micrometres to several
decimetres
NOTE A distinction is made between micro-, macro- and mega-roughness:
Micro-roughness: Roughness elements with a horizontal length of less than 0,5 mm; roughness of up to 1/100 mm
strongly influences wet friction between rubber and pavement surface;
Macro-roughness: Roughness elements with a horizontal length of 0,5 mm to 50 mm; only roughness values of up to
10 mm influence skid resistance through drainage properties;
Mega-roughness: Roughness elements with a horizontal length of 50 mm to 500 mm. Roughness of this magnitude
can influence accumulations of water on the pavement surface (for instance, in unevenness).
3.3
operating speed
speed at which the device traverses
...
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