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An extension of your team, our staff stand ready to serve on important issues ranging from advocacy, engineering, and health and safety to sustainability and workforce development. NAPA’s highly educated staff include three employees holding doctorates, 11 earning master’s degrees, and 18 boasting undergraduate degrees.

We also have applied knowledge with over two centuries of association leadership among the staff team. Learn more about how we can serve you.

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NAPA is the only national trade association that serves the asphalt pavement industry. Membership is available to any asphalt pavement mix producer, paving contractor, equipment manufacturer, material supplier, equipment distributor, engineering firm, or consultant.

For as little as one cent per ton, producer members have access to NAPA’s members-only portal, online directory, and discounts for meetings, events, and exhibit space at our World of Asphalt tradeshow.

Balanced Mix Design Resource Guide

Training and Resources

Training and Resources

Home Approaches Tests Implementation Tools Working Group

TRAINING

Balanced Mix Design Training Workshop (2.5 days)

RESOURCES

NAPA IS-143 Balanced Mix Design Resource Guide

NAPA IS-146 Impact of Laboratory RAP Preheating on Balanced Mix Design (BMD) Properties of Asphalt Mixtures

NAPA IS-145 Guide on Asphalt Mixture Specimen Fabrication for BMD Performance Testing

NAPA SR-228 Guidance on Progressing through BMD Approaches

Practical Considerations for Selecting a Performance Test for Asphalt Mixtures

Balanced Mix Design: Industry Business Case

Balanced Mix Design: Agency Business Case

2021 National Balanced Mix Design Implementation Conference - Session Recordings

CAPRI-23: Guidelines and Recommendations for Field Validation of Test Criteria for Balanced Mixture Design Implementation

NCHRP 10-107: Guide for Implementing Balanced Mix Design Specifications

NCAT REPORT 22-01: NCAT Performance Testing Round Robin

NCAT REPORT 20-02: Performance Testing for Quality Control and Acceptance of Balanced Mix Design

NCHRP Project 20-07 (Task 406): Development of a Framework for Balanced Mix Design

Adjustment of Asphalt Mix Design/Job Mix Formula to Satisfy Mechanical Test Properties

Positive Practices, Lessons Learned, and Challenges When Implementing Balanced Design of Asphalt Mixtures: Site Visits

Case Studies on the Implementation of Balanced Mix Design and Performance Tests for Asphalt Mixtures:

FHWA TechBrief: Balanced Asphalt Mix Design: Eight Tasks for Implementation (FHWA-HIF-22-048)

FHWA TechBrief: Performance Engineered Pavements (FHWA-HIF-20-005)

FHWA Publication: Index-Based Tests for Performance Engineered Mixture Designs for Asphalt Pavements (FHWA-HIF-19-103)

NCHRP Research Report 987: Ruggedness of Laboratory Tests for Asphalt Mixture Cracking Resistance

NCHRP Research Report 871: Long-Term Aging of Asphalt Mixtures for Performance Testing and Prediction

NCHRP SYNTHESIS 552: Practices for Fabricating Asphalt Specimens for Performance Testing in Laboratories

ONGOING RESEARCH

NCHRP 09-57A [Active] Ruggedness of Laboratory Tests to Assess Cracking Resistance of Asphalt Mixtures

NCHRP 10-107 [Active] Guide for Implementing Performance Specifications

TFRS 01: Quality Assurance (QA) Aspects of Performance Related Specifications