Pavements

Asphalt Pavements

Current Projects and Activities

• Asphalt Mixture Performance Tester (AMPT)
• Asphalt Pavement Recycling with Reclaimed Asphalt Pavement (RAP)
• Crumb Rubber
• Expert Task Group on Asphalt Mixtures & Construction; Asphalt Binders; and Models Technology
• Mobile Asphalt Technology Center (MATC)
• NIOSH Activities
• RD&T Recycling Information
• Recycling
• Warm Mix Asphalt Technologies and Research

Techbriefs

• Tech Brief: Balanced Asphalt Mix Design: Eight Tasks for Implementation,
  FHWA-HIF-22-048 2022
• Tech Brief: Advances in the Design, Production, and Construction of Stone Matrix Asphalt (SMA),
  FHWA-HIF-22-042 2022
• Tech Brief: Resource Responsible Use of Reclaimed Asphalt Pavement in Asphalt Mixtures,
  FHWA-HIF-22-003 2021
• Tech Brief: Practices and Lessons Learned When Using Reclaimed Asphalt Shingles in Asphalt Mixtures,
  FHWA-HIF-22-001 2021
• Tech Brief: Delta Tc Binder Specification Parameter,
  FHWA-HIF-21-042 2021
• TechBrief: State of the Knowledge for Use of Asphalt Mixtures with Reclaimed Binder Content,
  FHWA-HIF-18-059 2018
• Overview of Project Selection Guidelines for Cold In-place and Cold Central Plant Pavement Recycling,
  FHWA-HIF-17-042 2018
• Implementation of Remaining Service Interval Concept,
  FHWA-HRT-16-066 2016
• Testing for Fatigue Cracking in the Asphalt Mixture Performance Tester,
  FHWA-HIF-16-027 2016
• Tech Brief: Tack Coat Best Practices,
  FHWA-HIF-16-017 2016
• Determination of In-Place Elastic Layer Modulus: LTPP Backcalculation Methodology and Procedures,
  FHWA-HRT-15-037 2015
• TechBrief: Porous Asphalt Pavements with Stone Reservoirs,
  FHWA-HIF-15-009 2015
• TechBrief: The Use of Recycled Tire Rubber to Modify Asphalt Binder and Mixtures,
  FHWA-HIF-14-015 2014
• Asphalt Material Characterization for AASHTOWare® Pavement ME Design Using an Asphalt Mixture Performance Tester (AMPT),
  FHWA-HIF-13-060 2013
• TechBrief: Asphalt Mixture Performance Tester (AMPT),
  FHWA-HIF-13-005 2013
• Construction Quality Assurance for Design-Build Highway Projects,
  FHWA-HRT-12-039 2012
• TechBrief: An Alternative Asphalt Binder, Sulfur-Extended Asphalt (SEA),
  FHWA-HIF-12-037 2012
• The Use and Performance of Asphalt Binder Modified with Polyphosphoric Acid (PPA),
  FHWA-HIF-12-030 2012
• Techbrief: Independent Assurance Program,
  FHWA-HIF-12-001 2012
• The Multiple Stress Creep Recovery (MSCR) Procedure,
  FHWA-HIF-11-038 2011
• A Review of Aggregate and Asphalt Mixture Specific Gravity Measurements and Their Impacts on Asphalt Mix Design Properties and Mix Acceptance,
  FHWA-HIF-11-033 2011
• Superpave Gyratory Compactors,
  FHWA-HIF-11-032 2011
• Superpave Mix Design and Gyratory Compaction Levels,
  FHWA-HIF-11-031 2011
• TechBrief: Intelligent Compaction for Asphalt Materials,
  2010
• TechBrief: Phosphoric Acid as an Asphalt Modifier Guidelines for Use: Acid Type,
  FHWA-HRT-08-061 2008
• TechBrief: Comparison of Rehabilitation Strategies for AC Pavements,
  FHWA-RD-00-166 2000
• TechBrief: Performance Trends of Rehabilitation AC Pavements,
  FHWA-RD-00-165 2000
• TechBrief: Roughness Trends of Flexible Pavements,
  FHWA-RD-98-132 1998
• TechBrief: Improved Guidance for Users of the 1993 AASHTO Flexible Pavement Design Procedures,
  FHWA-RD-97-091 1997

Publications

• Recycled Tire Rubber - Hybrid GTR Binders and Dry Added GTR - How to use them in Asphalt Pavement Mixtures,
  FHWA-HIF-22-011 2021
• Resource Responsible Use of Recycled Tire Rubber in Asphalt Pavements,
  FHWA-HIF-20-043 2020
• Rutting Strain Index (RSI) Parameter for Asphalt Performance Engineered Mixture Design,
  FHWA-HRT-21-044 2021
• Long-Term Pavement Performance Information Management System User Guide,
  FHWA-HRT-21-038 2021
• FHWA Demonstration Project for Enhanced Durability of Asphalt Pavements through Increased In-place Pavement Density, Phase 3,
  FHWA-HIF-20-003 2020

View allAsphalt Publications

Videos

• Asphalt Pavement Principles Series
  • Density and Durability
  • Smoothness
  • Long Life Pavements

Cooperative Agreement Materials

The Federal Highway Administration (FHWA) has an ongoing Accelerated Implementation and Deployment of Pavement Technologies (AIDPT) Program, which includes the deployment of innovative technologies to improve pavement performance and reduce agency risk. A constant challenge in the transportation community is timely and efficient deployment of these new and innovative technologies. The purpose of this cooperative agreement is to stimulate, facilitate, and expedite the deployment and rapid adoption of new and innovative technology relating to the design, production, testing, control, construction, and investigation of asphalt pavements.

FHWA documents include:

• Index-Based Tests for Performance Engineered Mixture Designs for Asphalt Pavements
• Balanced Mixture Design
  • Tech Brief: Balanced Asphalt Mix Design: Eight Tasks for Implementation, FHWA-HIF-22-048 2022
  • Asphalt Mixture Performance Tester (AMPT) Video Series
    • AMPT Video 1: Fabrication of Small and Large Specimens
    • AMPT Video 2: Dynamic Modulus Small Specimen Test
    • AMPT Video 3: Cyclic Fatigue Small Scale Specimen Test
    • AMPT Video 4: Stress Sweep Rutting Test
  • BMD Asphalt Performance Testing Video Series
    • BMD Video 5: Semi-Circular Bend Test
    • BMD Video 6: Indirect Tensile Cracking Test
    • BMD Video 7: Illinois Flexibility Index Test
    • BMD Video 8: Hamburg Wheel-Track Test
• Asphalt Density
• Enhanced In-place Density Demonstration Projects (One Pager)
• Tech Brief #1: Demonstration Projects and Related Specifications
• Tech Brief #2: Techniques and Tools for Improving Density
• Tech Brief #3: Overcoming Obstacles to Achieving Density
• Tech Brief #4: Improving Longitudinal Joint Performance
• FHWA Demonstration Project for Enhanced Durability of Asphalt Pavements through Increased In-place Pavement Density, Phase 3
• Asphalt Materials Quality Assurance Practices
• Recycled Tire Rubber – Hybrid GTR Binders and Dry Added GTR – How to use them in Asphalt Pavement Mixtures
• Resource Responsible Use of Recycled Tire Rubber in Asphalt Pavements
• Tech Brief: Delta Tc Binder Specification Parameter
• Tech Brief: Practices and Lessons Learned When Using Reclaimed Asphalt Shingles in Asphalt Mixtures
• Tech Brief: Resource Responsible Use of Reclaimed Asphalt Pavement in Asphalt Mixtures

More information about the cooperative agreement is at: https://www.unr.edu/wrsc/tools/asphalt . This material is disseminated under the sponsorship of the U.S. Department of Transportation in the interest of information exchange under agreement number 693JJ31850010 Development and Deployment of Innovative Asphalt Pavement Technologies. The U.S. Government assumes no liability for the use of the information in the non-FHWA-branded documents.

Other cooperative agreement documents include:

• Positive Practices, Lessons Learned, and Challenges When Implementing Balanced Design of Asphalt Mixtures: Site Visits
• Successful Use of Reclaimed Asphalt Pavement in Asphalt Mixtures
• Field Review: Successful Practices and Lessons Learned When Using Reclaimed Asphalt Shingles in Asphalt Mixtures
• Alternative Contracting Methods for Pavement Preservation Projects
• Multiple Stress Creep and Recovery (MSCR) Implementation and Transition

NHI Training

• 131064 Introduction to Mechanistic Design for New and Rehabilitated Pavements
• 131063 Hot Mix Asphalt Pavement Evaluation and Rehabilitation
• 131032 Hot-Mix Asphalt Construction
• 131050 Asphalt Pavement Recycling Technologies
• 131053 - Superpave Fundamentals (not currently offered)

Other Training

• Asphalt Training
• Balanced Mix Design Case Studies Virtual Workshop
• Basics of Durable Asphalt Pavements - National Asphalt Pavement Association webinar (.avi, 215 mb)

Asphalt Team Oversees Cost Effective Solutions

Our staff works with Expert Task Groups (the ETGs)-which include representatives of the States, industry, and universities-to discuss ongoing national asphalt projects that are funded directly by the FHWA or through the National Cooperative Highway Research Program (NCHRP).