A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Skid Resistance of Bituminous Pavements Built with Carbonate Aggregates
This report documents the rationale for changes in carbonate-aggregate specifications enacted in 1969, and the effect that these changes have had on upgrading the skid resistance of bituminous pavements in New York. The new specification required a minimum of 10-percent and sand-sized acid-insoluble residue or a minimum of 20-percent chert particles in crushed limestone coarse aggregate. Limestone aggregates not meeting one of these criteria were required to be blended with an aggregate composed of at least 20-percent non-carbonate constituents. Dolomitic aggregates were exempted. A total of 68 pavements placed in 1969 and 1970 under provisions of the new specification were skid tested in 1973, 1974, 1975, and 1979. The extent to which aggregate blending enhanced skid resistance of these pavements is evaluated. Also examined is the additional beneficiation that would result from extending the 10-percent insoluble-residue criterion to dolomitic aggregates, and from increasing the minimum blending ratio from 20:80 to 35.65.
Skid Resistance of Bituminous Pavements Built with Carbonate Aggregates
This report documents the rationale for changes in carbonate-aggregate specifications enacted in 1969, and the effect that these changes have had on upgrading the skid resistance of bituminous pavements in New York. The new specification required a minimum of 10-percent and sand-sized acid-insoluble residue or a minimum of 20-percent chert particles in crushed limestone coarse aggregate. Limestone aggregates not meeting one of these criteria were required to be blended with an aggregate composed of at least 20-percent non-carbonate constituents. Dolomitic aggregates were exempted. A total of 68 pavements placed in 1969 and 1970 under provisions of the new specification were skid tested in 1973, 1974, 1975, and 1979. The extent to which aggregate blending enhanced skid resistance of these pavements is evaluated. Also examined is the additional beneficiation that would result from extending the 10-percent insoluble-residue criterion to dolomitic aggregates, and from increasing the minimum blending ratio from 20:80 to 35.65.
Skid Resistance of Bituminous Pavements Built with Carbonate Aggregates
R. W. Miller (author) / W. P. Chamberlin (author)
1980
47 pages
Report
No indication
English
Mineral aggregates for bituminous pavements
| Engineering Index Backfile | 1920
Mineral aggregates for bituminous pavements
| Engineering Index Backfile | 1919
Bituminous Mixtures, Aggregates, and Pavements
| NTIS | 1975