00217900

Component

http://onlinepubs.trb.org...s/hrr/1971/376/376-022.pdf

AGGREGATES THAT HAD BEEN RATED IN LABORATORY PAVING MIXTURES FOR WEAR AND POLISHING RESISTANCE HAVE BEEN EXAMINED FOR PHYSICAL PROPERTIES SUCH AS SPECIFIC GRAVITY, ABSORPTION, AND SURFACE TEXTURE; FOR LOS ANGELES WEAR; FOR ACID-INSOLUBLE RESIDUE PERCENTAGE AND GRADATION IN THE CASE OF CARBONATE AGGGREGATES; AND PETROGRAPHICALLY FOR MINERAL COMPOSITION, GRAIN SHAPE, GRAIN SIZE AND DISTRIBUTION, AND HARDNESS OF MINERALS. FOR GRANITE AGGREGATES, HIGHER LOS ANGELES WEAR LOSS INDICATED HIGHER SKID RESISTANCE. FOR SYNTHETIC AGGREGATES, HIGH ABSORPTION AND SURFACE CAPACITY SEEMED TO CORRELATE WITH HIGHER SKID RESISTANCE. THE ACID-INSOLUBLE RESIDUE PERCENTAGES FOR THE FOUR CARBONATE AGGREGATES EXAMINED INDICATED THAT SKID RESISTANCE IMPROVED WITH INCREASED RESIDUE AND THAT SAND-SIZE RESIDUE PROBABLY IS MORE IMPORTANT THAN TOTAL RESIDUE. A GENERAL CORRLEATION WAS FOUND BETWEEN THE PETROGRAPHIC PROPERTIES AND THE SKID RESISTANCE OF ANY GIVEN AGGREGATE: SKID RESISTANCE WAS HIGHER FOR AGGREGATES HAVING MIXED COMPOSITION OF HARD AND SOFT MINERALS THAN FOR AGGREGATES CONSISTING PREDOMINANTLY OF MINERALS OF THE SAME TYPE HAVING THE SAME HARDNESS. /AUTHOR/

Sponsored by Committee on Surface Properties--Vehicle Interaction and presented at the 50th Annual Meeting. Distribution, posting, or copying of this PDF is strictly prohibited without written permission of the Transportation Research Board of the National Academy of Sciences. Unless otherwise indicated, all materials in this PDF are copyrighted by the National Academy of Sciences. Copyright © National Academy of Sciences. All rights reserved.

01035647

pp 136-148

1971

Highway Research Record

0309019907

Digital/other

Figures (3) ; References (18) ; Tables (6)

Aggregates; Petrography; Skid resistance; Skid resistance tests

Geotechnology; Highways

TRIS, TRB

Jun 5 1972 12:00AM

• A SYNTHESIS OF CASE LAW JURISPRUDENCE RELATING TO WET- WEATHER HIGHWAY CONDITIONS
• ANTI-SKID MEASUREMENT
• ASSEMBLY AND USE OF ACCIDENT DATA
• CALIBRATION OF BRAKE FORCE TRAILERS AND SKID-RESISTANCE PHOTO-INTERPRETATION
• COMPARISON OF HIGHWAY PAVEMENT FRICTION MEASUREMENTS TAKEN IN THE CORNERING-SLIP AND SKID MODES
• CORRECTIVE PROGRAMS FOR IMPROVING SKID RESISTANCE
• FRICTION AND THE MECHANICS OF SKIDDING AUTOMOBILES
• GROOVING PATTERN STUDIES IN CALIFORNIA
• HIGH-SPEED SKID TESTING AT UNIVERSITY OF TENNESSEE
• HISTORY OF ANTI-SKID PROGRAM MANAGEMENT IN THE UNITED STATES
• INFLUENCE OF VEHICLE AND PAVEMENT FACTORS ON WET-PAVEMENT ACCIDENTS
• INTERACTION OF VEHICLE AND ROAD SURFACE
• INVESTIGATION OF INJURY-PRODUCING AUTOMOBILE ACCIDENTS AT THE HIGHWAY RESEARCH INSTITUTE
• PROBLEMS ASSOCIATED WITH ANTI-SKID PROGRAM MANAGEMENT
• SAFETY INSPECTION OF THE HIGHWAY AND THE VEHICLE
• SPOTTING SKID-PRONE SITES ON WEST VIRGINIA HIGHWAYS
• SPRAY GRIP ANTI-SKID SURFACING MATERIALS
• STATUS OF SKID MANAGEMENT PROGRAM IN TEXAS
• SUMMARY OF WORKSHOP ON ANTI-SKID PROGRAM MANAGEMENT
• TWO LABORATORY METHODS FOR EVALUATING SKID RESISTANCE PROPERTIES OF AGGREGATES
• USE OF ACCIDENT DATA TO IDENTIFY WET-PAVEMENT LOCATIONS IN PENNSYLVANIA