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NCHRP 04-35 [Completed]
Improved Test Methods for Specific Gravity and Absorption of Coarse and Fine Aggregate
| Project Data |
| Funds: |
$449,912 |
| Research Agency: |
National Center for Asphalt Technology--Auburn University |
| Principal Investigator: |
Randy West |
| Effective Date: |
4/3/2008 |
| Completion Date: |
12/31/2014 |
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OBJECTIVE
The objective of this project was to develop improved test methods for determining the specific gravity and absorption of coarse and fine aggregates for consideration by the AASHTO Highway Subcommittee on Materials. Development of the test methods aimed for balanced improvements in their (1) accuracy, precision, and ruggedness; (2) ease of use; (3) time of conditioning and testing; (4) cost; and (5) ability to deal with natural, crushed, recycled, and manufactured materials, compared with present standard methods. The ramifications of changes to the test methods on HMA mix design and PCC proportioning, other aggregate characteristics, and technician training and qualification were also addressed.
Status: The project final report is available as
NCHRP Report 805, Improved Test Methods for Specific Gravity and Absorption of Coarse and Fine Aggregates. To download Appendixes C through J of the report, click here
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