Revised publication outlines best practices for design and construction of large stone mixes and heavy-duty asphalt pavements for high-stress applications
LANHAM, MD — As an engineered system, asphalt pavements can be designed to carry any traffic load. However, to build the right pavement for heavy-duty, high-stress applications, such as ports and loading facilities, runways, and heavy truck corridors, attention must be paid to pavement structural design, mix design, and construction.
To aid in ensuring the right pavements are constructed for these sorts of severe loading conditions, the National Asphalt Pavement Association (NAPA) has released an updated second edition of Design & Construction of Heavy-Duty Pavements (Quality Improvement Series QIP-123), updating guidance originally issued in 2002. The publication will be released on August 27.
The new publication covers structural design, material section, mixture design, production, construction, and quality control considerations for heavy-duty asphalt pavements, including discussion of large-stone mixes, which can be an economical solution for these applications.
“Heavy-duty asphalt pavements offer the economic, environmental, and maintenance benefits of other asphalt pavements,” said NAPA Vice President for Engineering, Research, & Technology J. Richard Willis, Ph.D. “With this revised publication, pavement owners and designers, as well as contractors, can ensure they take the steps necessary during design and construction to create a high-performing pavement that stands up to the heaviest of loads.”
Harold von Quintus, P.E., of Applied Research Associates Inc. updated the publication originally authored by Charles S. Hughes with new research and field experiences. The book also consolidates and updates past NAPA guidance on large-stone mixes.
Support for the update was provided by the Federal Highway Administration through a cooperative agreement with NAPA. A companion series of webinars, “Performance Under Pressure,” was produced through the same cooperative agreement. The final installment of the webinar series will be held August 27, 2019, at 2 p.m. Eastern. To register, visit http://www.asphaltpavement.org/webinar.
Design & Construction of Heavy-Duty Pavements, Second Edition (QIP 123) is available as a PDF download through the NAPA Online Store,http://store.asphaltpavement.org. Archives of the “Performance Under Pressure” webinars are also available through the store.