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Validation of source approval of HMA surface mix aggregate : research summary.
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2016-04-01
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Abstract:Pavement surfaces must maintain an adequate level of friction in order to provide a
safe surface for vehicles. The Maryland State Highway Administration (SHA) is
responsible for ensuring that flexible pavement construction, using hot mix asphalt
(HMA), meets approved skid resistance standards, by selecting surface mix aggregate
with adequate frictional and durability characteristics. Conventional aggregate testing
methods are however, laborious, time‐consuming, and expensive. This research
proposed to develop faster, accurate, cost‐effective, and nondestructive
methodologies that utilize spectral properties and characteristics of aggregate samples
such as their wavelength and reflectance to assess and evaluate HMA surface mixes.
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