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Published byKatrina Kennedy
Modified over 4 years ago
History of Mn/DOT HMA Mixture Design & Construction Significant Changes By: Dave Holt, Dick Ingberg, and Earl Angell
1950’s Transition from Road-Mix to Hot-Mix Density Control
Hveem Compactor & Heavy Pnuematic Roller
1960’s Elimination of Hot Screening Mix Design for Surface Coarse Thin HMA Overlays/Plant-Mix Seals
Screen Deck & Drum-Mix Plants
1970’s Oil Embargo Drum-Mix Plants Hot-mix Recycle Full-Depth HMA Design
Avg. AC Bid Price, by Mn/DOT
Black Base Consumption, by Mn/DOT
1980’s Q/M (Quality Management) Volumetric Training
Training & Voids Testing
1990’s Certified Technicians VMA & Moisture Susceptibility SuperPave
Technicians Certified per Year
Immersion/Compression Test Superpave Gyratory Compactor
2000’s Warranties Design/Build
Specification Summary Where weve Been & Where we are Now (A Review of Past & Present Specifications) By: John Garrity Dave Holt, and Ron Bumann.
MnDOT 2007 Pilots n Mixture Sampling Modification –Increase randomness of sampling. »Sample is split in the field and stored in containers labeled with.
USA-CANADA-FRANCE Comparisons on HMA
HMA Warranties Seminar for CALTRANS Lee Gallivan FHWA Indiana Division April 3 rd, 2003.
The Superpave Gyratory Compactor How do we use it.
Paving Potpourri 2015 Spec Changes and More! Bob Dyer Assistant State Construction Engineer WAPA Joint Training March 2015 Lynn Peterson Secretary of Transportation.
Long-Life Pavements Concepts and Lab Testing
Asphalt Concrete Mix Design and Construction
Warm Mix Technology The Canadian Perspective J.Keith Davidson P.Eng. McAsphalt Industries Limited Toronto Ontario Canada CUPGA – 2007 – Niagara Falls.
Background: Hot mix asphalt (HMA) is a mixture of aggregate and asphalt binder. The asphalt is a petroleum based substance and, since the oil embargo of.
REVIEW FOR FINAL CONSTRUCTION MATERIALS: WOOD CONCRETE BITUMENS (ASPHALTS) MASONRY WHAT YOU NEED TO KNOW ?? QUALITY CONTROL ASTM SPECIFICATION MANUFACTURING.
MODULE 4 ASPHALT MIX DESIGN*
HMA Design (Surface) The surface course is the layer in contact with traffic loads and normally contains the highest quality materials. It provides characteristics.
Aggregates Usually refers to a soil that has in some way been processed or sorted. Soils are materials that are used as-is. An example would be a finished.
AMERICA RIDES ON US Basics of a Good Road: Part 3 Foundation Prep, Testing Standards, Quality and Inspection LTAP Road Scholar Core Course #6.
Pavements. Concrete –Rigid pavement Used where strength is an issue Runways, interstates and major roads –Continuous reinforcing Must have a good base.
BASICS OF A GOOD ROAD ASPHALT AND AGGREGATES
Extending the Life of Asphalt Mixes David Lee, P.E. - ARAC Chair, Salem District Materials Kevin McGhee, P.E. – ARAC Secretary, VCTIR.
Recycled Asphalt Program & Environmental Stewardship Program (Post Consumer Content) Robert C. Rea Nebraska Department of Roads WASHTO – Omaha, Nebraska.
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