01539920

Component

http://www.trb.org/Main/Blurbs/171408.aspx

http://www.trb.org/Publications/Blurbs/171408.aspx

The Superpave mixture design system provided an excellent foundation for the proper selection of materials to conduct a volumetric-based asphalt mixture design. However, one thing lacking in the Superpave system is a test procedure to verify that the performance of the asphalt mixture produced will perform as anticipated by the designer. Another important aspect generally not linked to pavement design is the quality control during production of these asphalt mixtures. It is well understood that there are differences in the asphalt mixture properties between lab-prepared and plant-prepared asphalt materials, therefore a good performance-based system should include a quality control component to ensure that the asphalt mixture design performs as intended. With budgets for roadway infrastructure extremely tight, owners want the maximum service life from every dollar invested. This paper covers the implementation of performance-based mixture design and quality control for “specialty” asphalt mixes currently specified by the New Jersey Department of Transportation (DOT). The New Jersey DOT utilized different mixture types for specific pavement applications and bridge deck overlays; therefore, different test procedures and performance criteria are established for the different mix applications. For all of the specialty asphalt mixtures utilized by New Jersey DOT, performance-based testing is conducted on the mix produced during mix design, test strip construction, and project production to ensure that the mixture meets the performance requirements and that the asphalt mixture produced for the project continually meets the specified performance criteria. The adoption of the performance-based design system for these asphalt mixtures has seen a dramatic improvement in the durability and cracking resistance of asphalt mixtures in these problematic areas.

01539885

English

pp 50-65

2014-9

Transportation Research Circular

Enhancing the Durability of Asphalt Pavements Workshop

Digital/other

Figures; Photos; References; Tables

Asphalt mixtures; Asphalt pavements; Durability; Mix design; Pavement performance; Performance based specifications; Performance tests; Quality control; Superpave

New Jersey

Design; Highways; Materials; Pavements; I22: Design of Pavements, Railways and Guideways; I31: Bituminous Binders and Materials

TRIS, TRB, ATRI

Oct 7 2014 9:05AM

• Impact of Mix Design on Asphalt Pavement Durability
• Optimization of Tack Coat for Hot-Mix Asphalt Placement
• Use of Models to Enhance the Durability of Asphalt Pavements