Citation

Mullen WG. Transp. Res. Rec. 1974; 523: 40-55.

Copyright

(Copyright © 1974, Transportation Research Board, National Research Council, National Academy of Sciences USA, Publisher SAGE Publishing)

DOI

unavailable

PMID

unavailable

Abstract

The objectives of this research were to develop laboratory tests for pre-evaluating aggregates and paving mixtures to predict skid resistance properties in the field and to evaluate field installations for correlation of field and laboratory polishing exposures. A usable correlation was found between British portable tester measurements and field skid-trailer measurements at test speeds of 20, 30, 40, and 50 mph (32.19, 48.28, 64.37, and 80.47 km/h). Different correlations were obtained for open-graded mixes and for dense-surface mixes. Field wear versus laboratory wear correlation was attempted by coring pavements after field testing and then polishing cores to terminal polish in the circular-track machine. The full "as new" polish curve was obtained by remixing and molding unworn portions of the field cores into laboratory specimens for polish in the circular-track machine. New and worn polish curves when compared gave the extent of cricular-track wear experienced in the field. Comparisons were valid for that mix only and could not be combined from different mixes to give a traffic exposure versus circular-track equivalency. It was possible, however, to establish an upper limit for field wear equivalent to 3 hours or less of machine wear. The establishment of an upper limit allows prediction from laboratory tests of maximum field polish that may be anticipated for a given pavement mixture design. Examples are given in the report.

Language: en