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Significance and Use
The use of laboratory obtained polishing curves and speed gradients on proposed aggregate combinations and pavement mixtures are helpful tools in predicting the polishing characteristics of these surfaces if placed in field service.
1.1 This practice describes a laboratory procedure for estimating the extent to which aggregates or pavement surfaces are likely to polish when subjected to traffic. Specimens to be evaluated for polishing resistance are placed in a circular track and subjected to the wearing action of four small-diameter, pneumatic tires without use of abrasive or water. Terminal polish is achieved after approximately 8 h of exposure.
2. Referenced Documents (purchase separately) The documents listed below are referenced within the subject standard but are not provided as part of the standard.
C192/C192M Practice for Making and Curing Concrete Test Specimens in the Laboratory
D2240 Test Method for Rubber Property--Durometer Hardness
E177 Practice for Use of the Terms Precision and Bias in ASTM Test Methods
E274 Test Method for Skid Resistance of Paved Surfaces Using a Full-Scale Tire
E303 Test Method for Measuring Surface Frictional Properties Using the British Pendulum Tester
E707 Test Method for Skid Resistance Measurements Using the North Carolina State University Variable-Speed Friction Tester
ICS Number Code 93.080.20 (Road construction materials)
UNSPSC Code 30111800(Aggregates)