Minimum VMA in HMA Based on Gradation and Volumetric Properties, MLR-95-7, 1996

(1996) Minimum VMA in HMA Based on Gradation and Volumetric Properties, MLR-95-7, 1996. Transportation, Department of

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Abstract

The use of voids in the mineral aggregate (VMA) criteria for proper mix design of hot mix asphalt (HMA) mixtures is a time honored and fairly successful tool. Recent developments in the field of asphalt mix design have encouraged the use of mixtures with a coarse aggregate structure to resist the affect of heavy traffic loads. By using the equations presented, which account for both aggregate gradation and the volumetric properties of the materials, the mix designer is able to judge the proper VMA requirement for each unique blend of materials. By applying the new equations, the most economical mix may be selected without great risk of reduced durability. Supporting data from field application is presented to illustrate the use of the equations.

Item Type: Departmental Report
Keywords: Economics, Hot mix asphalt, Mineral aggregates, Mix design, Voids
Subjects: Transportation
Transportation > Roads and highways
Transportation > Research
Transportation > Research > Concrete
Transportation > Design and Construction
ID Code: 16818
Deposited By: Iowa DOT Library
Deposited On: 07 May 2014 11:49
Last Modified: 07 Jan 2015 21:16
URI: http://publications.iowa.gov/id/eprint/16818