1.1 This test method covers the measurement of the side force friction of paved surfaces utilizing a device commonly called a SCRIM 1.2 This test method utilizes a measurement obtained by a SCRIM, containing one freely rotating test wheel angled to the direction of motion, over a pavement surface at a constant speed while the test wheel is under a measured (changing dynamically) load. SCRIM test equipment has been built onto a number of different vehicle chassis and functions independently of vehicle choice. This method provides data of the side force friction (and other data) along the whole length of the test surface being tested. 1.3 The values stated in SI units are to be regarded as standard. 1.4 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use. See also Section 6.
Continuous friction measuring equipment (CFME) is commonly used to manage airfield pavements, but rarely applied in the highway field. The SCRIM device is not the only viable CFME for highway application, but is a system with which there is substantial relevant experience in Western Europe, Australia, and South America. An ASTM standard for the SCRIM would expand the availability of continuous friction technology to a broad field of pavement managers. A standard for a system with substantial in-service performance history opens a wider door for all CFME equipment to highway application. Potential users of such standards include US State agencies and other federal agencies beyond Europe.
Keywordsskid resistance; friction; continuous friction; pavements; SCRIM; routine friction testing; fixed slip; side force friction; friction testing; pavement friction management
The title and scope are in draft form and are under development within this ASTM Committee.Back to Top
Kevin Mc Ghee