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CEN/TS 15901-15:2014

Road and airfield surface characteristics - Part 15: Procedure for determining the skid resistance of a pavement surface using a device with longitudinal controlled slip (LFCI): The IMAG

Edition date: 2026-02-03
In Force
Available languages: English, German
Summary: Diese Technische Spezifikation beschreibt ein Verfahren für die Bestimmung der Griffigkeit von Fahrbahndecken durch Messung des Reibungskoeffizienten in Längsrichtung LFCE, das nur an Flugplätzen angewendet wird. Das Verfahren liefert ein Maß für die Nassgriffigkeitseigenschaften einer gebundenen Oberfläche durch Messung des Reibungskoeffizienten in Längsrichtung mit Hilfe eines Anhängers mit einem Schlupfverhältnis von 15 % (Normwert). Für Forschungsmessungen kann das Schlupfverhältnis zwischen 0 % und 100 % gewählt werden. Der Messreifen wird mit vertikaler Kraft und geregelter Geschwindigkeit über eine zuvor angenässte Fahrbahndecke gezogen, wobei er parallel zur Bewegungsrichtung läuft. Diese Technische Spezifikation behandelt den Betrieb des IMAG-Geräts. Die Griffigkeit einer Fahrbahn wird durch Reibungsmessungen bei verschiedenen Geschwindigkeiten festgelegt. Prüfungen können bei Geschwindigkeiten zwischen 40 km/h und 120 km/h durchgeführt werden, die Normwerte für Messgeschwindigkeiten sind jedoch 40 km/h, 65 km/h und 95 km/h. Messungen bei niedriger Geschwindigkeit beurteilen die Mikrotextur, wohingegen Messungen bei hoher Geschwindigkeit die Makrotextur der Fahrbahn beurteilen. Die Griffigkeit ist als Reibungsmessungen bei diesen Geschwindigkeiten und durch den Vergleich mit dem minimalen Reibungsgrad angegeben.

This Technical Specification describes a method only used on airports for determining the skid resistance of pavements by measurement of the longitudinal friction coefficient LFCI. The method provides a measure of the wet skid resistance properties of a bound surface by measurement of the longitudinal friction coefficient using a trailer with a standard slip ratio of 15 %. The slip ratio can be chosen between 0 % and 100 % for research application. The test tyre is dragged over a pre-wetted pavement under vertical force and constant speed conditions while the test tyre is parallel to the direction of motion. This Technical Specification covers the operation of the IMAG device. The skid resistance of a pavement is determined by friction measurements at different speeds. Tests can be performed between 40 km/h and 120 km/h but standard test speeds are 40 km/h, 65 km/h and 95 km/h. Low speed measurements asses the microtexture while high speed measurements asses the macrotexture. The skid resistance is reported as friction measurements at these speeds and by comparison with the minimum friction level.

La présente Spécification technique décrit une méthode utilisée uniquement pour les aéroports, permettant de déterminer l’adhérence des revêtements de chaussées par mesure du coefficient de frottement longitudinal CFLI. La méthode permet de mesurer les propriétés d'adhérence d'une couche de roulement mouillée, en déterminant le coefficient de frottement longitudinal à l'aide d'une remorque ayant un taux de glissement normalisé de 15 %. Le taux de glissement peut être choisi entre 0 % et 100 % à des fins de recherche. Le pneumatique d’essai est tracté sur une chaussée préalablement mouillée, dans des conditions d'effort vertical et de vitesse constante, le pneumatique d'essai étant parallèle à la direction du mouvement. La présente Spécification technique porte sur le fonctionnement de l’appareil IMAG. L'adhérence d'une chaussée est déterminée par des mesures du frottement à différentes vitesses. Les essais peuvent être effectués à une vitesse comprise entre 40 km/h et 120 km/h, mais les vitesses d'essai normalisées sont de 40 km/h, 65 km/h et 95 km/h. Les mesures à faible vitesse évaluent la microtexture alors que les mesures à vitesse élevée évaluent la macrotexture. L'adhérence est consignée dans le rapport sous forme de mesures du frottement à ces vitesses et par comparaison au niveau de frottement minimal.
ICS: 93.080.20-Road construction materials, 93.120-Construction of airports
CTN: CEN/TC 227 - 6208

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