CEN/TS 15901-12:2011

SLOVENSKI STANDARD
01-junij-2011
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Road and airfield surface characteristics - Part 12: Procedure for determining the skid
resistance of a pavement surface using a device with longitudinal controlled slip: the BV
11 and Saab friction tester (SFT)
Oberflächeneigenschaften von Straßen und Flugplätzen - Teil 12: Verfahren zur
Bestimmung der Griffigkeit von Fahrbahndecken durch Verwendung eines Geräts mit
geregeltem Schlupf in Längsrichtung: das BV-11-Gerät und das Saab-
Reibungsmessgerät (Saab-Friction-Tester)
Caractéristiques de surface des revêtements de chaussée des routes et des aérodromes
- Partie 12: Mode opératoire de détermination de l'adhérence de la surface d'un
revêtement de chaussée à l'aide d'un dispositif à frottement longitudinal contrôlé, le BV
11 et le dispositif d'essai de frottement Saab (SFT)
Ta slovenski standard je istoveten z: CEN/TS 15901-12:2011
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 15901-12
SPÉCIFICATION TECHNIQUE
TECHNISCHE SPEZIFIKATION
March 2011
ICS 93.080.20; 93.120
English Version
Road and airfield surface characteristics - Part 12: Procedure for
determining the skid resistance of a pavement surface using a
device with longitudinal controlled slip: the BV 11 and Saab
friction tester (SFT)
Caractéristiques de surface des revêtements de chaussée Oberflächeneigenschaften von Straßen und Flugplätzen -
des routes et des aérodromes - Partie 12: Mode opératoire
Teil 12: Verfahren zur Bestimmung der Griffigkeit von
de détermination de l'adhérence de la surface d'un Fahrbahndecken durch Verwendung eines Geräts mit
revêtement de chaussée à l'aide d'un dispositif à frottement geregeltem Schlupf in Längsrichtung: das BV-11-Gerät und
longitudinal contrôlé, le BV 11 et le dispositif d'essai de das Saab-Reibungsmessgerät (Saab-Friction-Tester)
frottement Saab (SFT)
This Technical Specification (CEN/TS) was approved by CEN on 14 September 2010 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, Croatia, 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
© 2011 CEN All rights of exploitation in any form and by any means reserved Ref. No. CEN/TS 15901-12:2011: E
worldwide for CEN national Members.

Contents
Page
Foreword .3
1 Scope .4
2 Recommended uses .4
3 Terms and definitions .4
4 Safety .6
5 Essential characteristics .6
5.1 Principle of measurements .6
5.2 Description of BV 11 and SAAB friction tester .6
6 Key characteristics .6
6.1 General .6
6.2 Test speed .7
6.3 Braking system .7
6.4 Static wheel load .7
6.5 Test wheel arrangement .7
6.6 Test tyre .7
6.7 Pavement wetting system, water film thickness .7
6.8 General requirements for measuring.7
6.9 Parameters recorded and reported .8
7 Test procedure .8
7.1 Standard test conditions .8
7.2 Prior to testing .9
8 Precision .9
9 Test report .9

Foreword
This document (CEN/TS 15901-12:2011) 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, Croatia, 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 skid resistance of a surface by
measurement of the longitudinal friction coefficient LFCN.
The method provides a measure of the wet skid resistance properties of a bound surface by measurement of
the longitudinal friction coefficient using a continuous reading braked wheel fixed-slip device.
The test tyre is dragged, parallel to the direction of motion and perpendicular to a pre-wetted pavement under
controlled speed conditions.
This document covers the operation of the BV11 and SAAB Friction Tester (SFT) with a fixed slip ratio of
17 %.
Machines conforming to the general characteristics of the BV11 and SAAB Friction Tester and with the
specific provisions of this document may also be used for the tests.
2 Recommended uses
The BV11 and SFT are used in the following fields of application:
 approval of new surfacing;
 measurements for project-level compliance;
 investigation of surface skid resistance;
 comparative measurements among different devices;
 research measurements;
 for airfield use other specifications for speed, water film and tyre type and pressure are used than on road
pavements.
3 Terms and definitions
For the purposes of this document, the following terms and definitions apply.
3.1
friction
resistance to relative motion between two bodies in contact
NOTE The frictional force is the force, acting tangentially in the contact area.
3.2
braking force coefficient
ratio between the longitudinal frictional force and
...