United States Department of Transportation
i
CTDOT Specification Requirements for Minimum Asphalt Requirements
-
2021-06-14
[PDF-10.21 MB]
Details:
-
Creators:
-
Corporate Creators:
-
Corporate Contributors:
-
Subject/TRT Terms:
-
Publication/ Report Number:
-
Resource Type:
-
Geographical Coverage:
-
Edition:Final Report, January 24, 2014 – June 30, 2015
-
Corporate Publisher:
-
Abstract:CTDOT minimum asphalt requirements have resulted in roadway mixes being produced with finer aggregate gradations in recent years than they have in the past. This research was conducted to investigate the possibility of lowering the minimum asphalt content requirements in an effort to drive the mix gradations coarser without compromising the performance quality of the mix. CTDOT Superpave mixes were collected from multiple HMA production facilities during production. Constituent aggregates for each of the mixes were also collected. Rutting susceptibility testing, moisture susceptibility testing along with fatigue and reflective cracking damage susceptibility testing w ere performed on the collected mixes. The aggregates were then recombined at lowered asphalt contents to produce specimens that were subjected to the same performance tests as the original mix for comparison. Performance test results indicate that the current CTDOT minimum asphalt content requirements are optimized and there are no recommendations to change the specifications as a result of this research.
-
Format:
-
Funding:
-
Collection(s):
-
Main Document Checksum:
-
Download URL:
-
File Type:
