A New Formula of Voids in the Mineral Aggregate (VMA) of Hot Mix Asphalt (HMA) and its Application

Abstract:

Voids in the mineral aggregate (VMA) is an important volume index for hot mix asphalt (HMA). In the popular HMA design methods such as Superpave system and Marshall Method an accurately calculated VMA is a crucial selection index for the aggregate gradation design. In this article a new formula for calculating VMA is established from the mathematic deduction based on the air voids and traditional VMA formulas. The new built VMA formula can be used to examine the result of the existing empirical equation in the aggregate gradation design process of Superpave. In fact, when the estimated asphalt content is determined according to the initial asphalt content the new formula can completely replace the empirical one for estimating VMA, offering conveniences to calculating.

• Periodical: Advanced Materials Research (Volumes 150-151)
• Pages: 1158-1162
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.150-151.1158
• Online since: October 2010
• Authors: Shu Tang Liu, Chang Shun Shao, Wei Dong Cao, Xiao Liu
• Keywords: Aggregate Gradation, Formula Establishing, Hot Mix Asphalt (HMA), Superpave System, Voids in the Mineral Aggregate (VMA)

References

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