Event Date/Time: Dec 13, 2010
End Date/Time: Dec 14, 2010
Hot Mix Asphalt (HMA) is the main civil engineering material in paving construction. More than 90% of roads and highways in North America are paved with HMA; therefore, many civil engineers work in the design, production, and construction of HMA. A successful design, production, and construction of HMA need significant knowledge, experience, and engineering judgement.
During the last decade, several developments in the asphalt mix industry have occurred. The most important developments in the design and testing of HMA include a new grading system for asphalt cement (Performance Grade- PG) as well a new mix design method (Superpave). Although many agencies use these new methods, other agencies use the traditional design and testing methods or a combination of new and old systems. It is critical that HMA users, producers, and pavement engineers and technologists to learn and understand the traditional characterization methods as well as the recent development in this area.
The main objective of this workshop is to provide participants with a fundamental understanding of HMA as well as of the traditional and new developments in HMA design and testing.
The workshop is intended for all engineers and technologists who work in the design, production, and quality control/assurance of HMA. This course is an excellent opportunity for those wishing to develop their knowledge on the latest technology in the area of HMA.
Program Outline (1.2 CEUs / 12 PDHs)
Introduction to HMA
HMA industry and its importance
Components of HMA (asphalt cement and aggregate)
Asphalt cement and types (emulsions, cut back)
Traditional characterization of asphalt cement
Penetration test and grading
Viscosity test and grading
Shortcomings in traditional asphalt testing and grading systems
Performance Graded (PG) asphalt grading system
Aggregates for HMA
Important properties: gradation, soundness, testing of aggregate for HMA
Fundamentals of HMA
Why characterization of HMA is a complicated engineering task?
Volumetric and mass relationships of HMA
Definition of volumetric properties and their significances
Air voids, VMA, VFA
Mix design of HMA using Marshall method
Shortcomings in Marshall methods
Superpave Mix design method
Special Asphalt Mixtures and their applications
Stone Mastic Asphalt
Asphalt rubber mixes
Polymer modified asphalt
Asphalt recycled mixes
Upon completion of the workshop participant will learn:
Components of HMA (asphalt cement and aggregates)
Nature and types of asphalt cement
Traditional testing of asphalt cement
PG asphalt cement system
Volumetric properties of HMA
Marshall mix design testing and methods
Superpave mix design method
Special asphalt mixtures and their applications