UNLIMITED FREE ACCESS TO THE WORLD'S BEST IDEAS

close

AASHTO R 15

Standard Practice for Evaluation of Asphalt Additives and Modifiers

active, Most Current
Buy Now
Organization: AASHTO
Publication Date: 1 January 2018
Status: active
Page Count: 8
scope:

This standard practice covers the laboratory testing required to evaluate asphalt additives and modifiers in both asphalt binders and mixtures. The terms "additive" and "modifier" are used interchangeably and are broadly interpreted to include any materials added to asphalt binder in minor amounts, other than mineral fillers, sand, and aggregates, whose purported effect is to change the effective performance grade of the asphalt binder, or to otherwise improve the performance and service life of pavements or maintenance materials by improving the properties of the asphalt binder or asphalt mixture, or both. This standard does not include modifications due to the use of recycled materials.

Following is a list of the common purposes for which an additive/modifier may be added:

Anti-Rutting (permanent deformation).

Anti-Cracking.

Thermal Cracking (low-temperature cracking, thermal-fatigue cracking).

Load-Associated Fatigue Cracking.

Anti-Stripping-Moisture susceptibility of the asphalt-aggregate bond.

Warm Mix Asphalt (WMA) Technologies/Compaction Aids.

Extenders/Softeners.

The values stated in SI units are to be regarded as the standard.

Document History

AASHTO R 15
January 1, 2018
Standard Practice for Evaluation of Asphalt Additives and Modifiers
This standard practice covers the laboratory testing required to evaluate asphalt additives and modifiers in both asphalt binders and mixtures. The terms “additive” and “modifier” are used...
January 1, 2000
Standard Practice for Asphalt Additives and Modifiers
This standard practice covers the laboratory testing required to evaluate asphalt additives and modifiers in both neat asphalt and in asphalt-aggregate hot mixtures. The terms "additive" and...
January 1, 2000
Standard Recommended Practice for Asphalt Additives and Modifiers
A description is not available for this item.
R15
January 1, 2000
Standard Recommended Practice for Asphalt Additives and Modifiers
A description is not available for this item.
January 1, 2000
Standard Practice for Asphalt Additives and Modifiers
This standard practice covers the laboratory testing required to evaluate asphalt additives and modifiers in both neat asphalt and in asphalt–aggregate hot mixtures. The terms “additive” and...
R15
January 1, 1989
Standard Recommended Practice for Asphalt Additives and Modifiers
A description is not available for this item.
R15
January 1, 1989
Standard Recommended Practice for Asphalt Additives and Modifiers
A description is not available for this item.
R15
January 1, 1989
Standard Recommended Practice for Asphalt Additives and Modifiers
A description is not available for this item.

References

Advertisement