Implementation of Balance Mixture Design in Missouri Test Sections with Modifiers
MoDOT has identified a demonstration project which is a 6-mile stretch (approximately) of I-155 located in Pemiscot County. Nine separate modified mix designs were constructed during this project. The modifications include ground tire rubber (GTR), post-consumer recycled plastics (PCR-P), styrene-butadiene-styrene (SBS), and polyphosphoric acid (PPA). The experimental sections include both dense-graded and Stone Matrix Asphalt (SMA) mixture types. MoDOT also implemented new balanced mix design (BMD) test thresholds for different mix types according to the JSP for this project. The dense-graded mixtures have a minimum CT- Index threshold of 45 and the elevated BMD requirement is 80 for CT-Index. For SMA mixtures, the CT-Index requirement is 160. Maximum rut depth requirement for all mixes is 12.5 mm at 15,000 passes.
Language
- English
Project
- Status: Active
- Funding: $249998
-
Contract Numbers:
TR202418
-
Sponsor Organizations:
Missouri Department of Transportation
1617 Missouri Boulevard
P.O. Box 270
Jefferson City, MO United States 65102 -
Project Managers:
Breeding, Scott
-
Performing Organizations:
Missouri Center for Transportation Innovation
Lafferre Hall
416 S 6th St.
Columbia, Missouri United States 65201University of Missouri, Columbia
Department of Civil Engineering
Columbia, MO United States 65211 -
Principal Investigators:
Buttlar, William
- Start Date: 20230510
- Expected Completion Date: 20250131
- Actual Completion Date: 0
Subject/Index Terms
- TRT Terms: Demonstration projects; Mix design; Plastics; Recycled materials; Rubber; Stone matrix asphalt; Styrene butadiene styrene; Test sections
- Geographic Terms: Missouri
- Subject Areas: Design; Highways; Materials;
Filing Info
- Accession Number: 01913736
- Record Type: Research project
- Source Agency: Missouri Department of Transportation
- Contract Numbers: TR202418
- Files: RIP, STATEDOT
- Created Date: Apr 4 2024 11:08AM