Course Catalogue.

After participating in this course, you will be able to:

• Make critical decisions in the lab and on construction projects using the background knowledge gained from the course
• Select asphalt and aggregate material, knowing their effect on mixture properties
• Perform proportioning, volumetric analysis, and mixture evaluation using the guidelines for the application of different mixture types
• Increase the service life of your pavement by efficient asphalt mix design
• Analyze your specifications to understand how they affect the quality you receive

Description
Maximizing the performance of high-quality materials and sophisticated construction practices is best achieved with a thorough understanding of material properties and asphalt mix design. Engineers and technical managers are faced with the challenge of maintaining the investment in highways, airport runways, urban roads, parking areas and access roads in many developments.

An understanding of the considerations for the design and construction of asphalt pavement and of the factors that influence its deterioration is essential to make technically and economically optimized decisions regarding the design of asphalt mixes.

Participants will work on asphalt mix designs suitable for different loads and environmental conditions.

Who Should Attend
Designers and Field Management • Geotechnical, Pavement, and Materials Engineers• Project Managers • Maintenance Engineers • Technicians and Technologists • Contractors • Construction Inspectors • Technical Managers • Consultants and Municipal Engineers.

Course Syllabus

Day I

Welcome, Introduction, Workshop Preview, Learning Outcomes and the Assessment Method

Role of Asphalt Mixes in Pavement Life

• Importance of geotechnical conditions
• Sub-grade evaluation
• Frost, drainage and erosion control
• Causes of distress
• Design considerations
• Asphalt binders and their uses
• Influence of asphalt mix designs on the durability of the pavement

Aggregates and their Characteristics

• Specifications
• Quality requirements
• Aggregate gradations
• Specific gravities
• Aggregate batching
• HMA volumetrics
• Selecting design aggregate structures
• Estimating VMA
• Specimen preparation calculations
• Specimen compaction
• Bulk-specific gravity testing
• Theoretical maximum specific gravity testing

Asphalt Mix Design Considerations

• Asphalt cement, emulsions and cutbacks
• Types and applications
• Asphalt cement for hot mix asphalt
• Stability, fatigue and durability considerations
• Volumetric calculations
• Determination of optimum asphalt content
• Moisture damage
• Functional requirements
• Construction considerations
• Quality control
• Mix performance testing
• Marshall and Superpave System
• Demonstration of lab results

Asphalt Binder- SHRP Material Selection

• Test procedures and the meaning of results
• Effects of binder on quality of the mix
• LTPP program and selection of appropriate grade
• Modified procedure

Other Available Resources

• Use of the web to find out about pavements
• Pavement preservation-what it means
• Life cycle costing as it affects the design
• Innovative technologies

Day II

Hot Mix Asphalt (HMA) Design Requirements

• Mixture properties: selection criteria for various mix types
• Specification requirements for Marshall Mixes
• Specification requirements for Superave
• Mix size and layer thickness range
• SMA mix
• Workshop

Designing Mixtures with RAP

• Binder selection
• Calculations
• Mix properties

Quality Management in the Field

• Marshall testing requirements
• Superpave testing requirements
• Mix problems during production
• Segregation

Resurfacing

• Asphalt overlays for serviceability and strength
• Use of fabrics and grids

Specifications-Mixing, Tests, Spreading and Compaction

Questions and Answers and Feedback to Participants on Achievement of Learning Outcomes

Concluding Remarks and Final Adjournment

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