Pavement System Design

Day 1

Part 1 – Soils and Roads

Introduction to Roads and Pavements

• Course introduction and objectives
• Damage mechanisms
• traffic loads
• freeze-thaw cycling
• wet-dry cycling
• Structural numbers

James M. Tinjum, PE, PhD
Program Director
University of Wisconsin–Madison

Soil and Geotechnical Inputs for Roads and Pavement Design

• AASHTO soil classification
• Strength parameters
• California bearing ratio
• unconfined compressive strength
• resilient modulus
• r-value
• AASHTO and MEPDG Geotechnical inputs

James M. Tinjum, PE, PhD

Field Investigation Scope, Laboratory Testing Program, and Construction QA/QC

• Soils Field Investigation
• number and depth of investigation points
• exploration techniques
• boring logs
• Geotechnical reporting
• Correlations for soil properties
• Field QA/QC
• falling weight deflectometer
• dynamic cone
• proctor compaction curves, density testing

James M. Tinjum, PE, PhD

Unpaved Roads, Working Platforms, and Haul Roads

• Army Corps of Engineers method
• Giroud-Noiray and Giroud-Han methods
• Working platforms

James M. Tinjum, PE, PhD

Soil and Subbase Improvement

• Chemical stabilization
• lime, fly ash, Portland cement
• Geosynthetics
• geotextiles, geogrids, geosynthetic drains
• Recycled Material as subbase and base
• recycled concrete aggregate (RCA)
• recycled pavement material (RPM)
• recycled asphalt pavement (RAP)
• foundry slag/sand
• bottom ash

James M. Tinjum, PE, PhD

Unpaved Roads, Haul Roads, and Construction Access

• Army Corps of Engineers method
• Giroud-Noiray and Giroud-Han methods

James M. Tinjum, PE, PhD

Part 2 – Materials for Pavements

Hot-Mix Asphalt (HMA)

• Asphalt cement
• source, production, and grades
• test methods
• effect on pavement performance
• visco-elastic and failure properties
• Liquid asphalts
• emulsions, cutbacks, and grades
• production methods
• surface treatments
• Gradation and properties of aggregates
• gradation requirements
• physical properties
• test methods
• superpave design requirements
• Portland cement (PC) types and properties
• PC production and cement properties
• modulus, strength, and durability
• water cement ratio, curing, and volume changes
• aggregate requirements and admixtures

Hussain U. Bahia, PhD
Professor
University of Wisconsin–Madison

Day 2

Asphalt Mixture Design and Testing

• Stresses/Strains in flexible pavements
• Visco-elastic systems and moving loads
• Mixture design methodologies
• Marshall, Hveem, superpave
• Thermal properties and durability

Hussain U. Bahia, PhD

Part 3 – Pavement Design

Flexible Pavement Design

• Design charts
• Asphalt institute method
• AASHTO method

Rigid Pavement Design

• Design charts
• Portland Cement Association (PCA) Method
• AASHTO Method

Hussain U. Bahia, PhD

Mechanistic-Empirical Pavement Design

Guide (MEPDG) – Introduction and Geotechnical Inputs

• Empirical methods
• Introduction to MEPDG
• Geotechnical inputs

James M. Tinjum, PE, PhD

Pavement Design with MEPDG

• Flexible pavement design
• Rigid pavement design

Hussain U. Bahia, PhD

Portland Cement Concrete Construction

• Slip from construction and reinforcement placement
• Joint dowels
• Curling practices and finishing

Hussain U. Bahia, PhD

Pavement Performance

• Distress mechanisms
• Serviceability concept
• Design of overlays

Hussain U. Bahia, PhD