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Significance and Use
The knowledge of side force friction serves as an additional tool in characterizing pavement surfaces. Side force friction data alone may be of limited value in determining the suitability of paving materials or finishing techniques. However, when used in conjunction with other physical and chemical tests, the side force friction may contribute to characterization of pavement surfaces.
The values measured with the equipment and procedures stated herein do not necessarily agree or correlate directly with those obtained by other paved surface friction measuring methods.
1.1 This test method covers the measurement of the side force friction of paved surfaces utilizing a device commonly called a Mu-Meter.
1.2 This test method utilizes a measurement obtained by pulling the Mu-Meter, containing two freely rotating test wheels angled to the direction of motion, over a pavement surface at a constant speed while the test wheels are under a constant static load. This method provides data of the side force friction (and other data) along the whole length of the test surface being tested which is applied to a variety of computerized algorithms enabling the production of results including (but not limited to) rolling averages, numeric and graphical representations, friction mapping and reports formatted in the layout approved by a wide variety of national airport regulators.
1.3 The values stated in inch-pound units are to be regarded as standard. The values given in parentheses are mathematical conversions to SI units that are provided for information only and are not considered 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.
2. Referenced Documents (purchase separately) The documents listed below are referenced within the subject standard but are not provided as part of the standard.
D297 Test Methods for Rubber Products--Chemical Analysis
D412 Test Methods for Vulcanized Rubber and Thermoplastic Elastomers--Tension
D1054 Test Method for Rubber Property--Resilience Using a Goodyear-Healey Rebound Pendulum
D1765 Classification System for Carbon Blacks Used in Rubber Products
D2240 Test Method for Rubber Property--Durometer Hardness
D3182 Practice for Rubber--Materials, Equipment, and Procedures for Mixing Standard Compounds and Preparing Standard Vulcanized Sheets
E178 Practice for Dealing With Outlying Observations
E303 Test Method for Measuring Surface Frictional Properties Using the British Pendulum Tester
E1551 Specification for Special Purpose, Smooth-Tread Tire, Operated on Fixed Braking Slip Continuous Friction Measuring Equipment
ICS Number Code 93.080.20 (Road construction materials)
UNSPSC Code 30120000(Roads and landscape); 60104605(Friction apparatus)