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Significance and Use
The amount of asphalt absorbed by the aggregate contributes little or nothing to the durability of an asphalt pavement in service other than possibly providing greater resistance to stripping in the presence of water.
Percent asphalt absorption can be an indicator of changes that may occur in plant mix production during construction.
The calculated percent asphalt absorption can be used for calculating percent air voids during paving mixture design.
1.1 This practice covers equations for calculating percent asphalt absorption by the aggregate in an asphalt paving mixture, expressed as percent of the oven-dry mass of the aggregate in the paving mixture. This calculation is based on measured values for components and properties of an oven-dry asphalt paving mixture.
This practice does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use.
2. Referenced Documents (purchase separately) The documents listed below are referenced within the subject standard but are not provided as part of the standard.
C127 Test Method for Density, Relative Density (Specific Gravity), and Absorption of Coarse Aggregate
C128 Test Method for Density, Relative Density (Specific Gravity), and Absorption of Fine Aggregate
C136 Test Method for Sieve Analysis of Fine and Coarse Aggregates
D1560 Test Methods for Resistance to Deformation and Cohesion of Bituminous Mixtures by Means of Hveem Apparatus
D2041 Test Method for Theoretical Maximum Specific Gravity and Density of Bituminous Paving Mixtures
D2172 Test Methods for Quantitative Extraction of Bitumen From Bituminous Paving Mixtures
D3289 Test Method for Density of Semi-Solid and Solid Bituminous Materials (Nickel Crucible Method)
D4125 Test Methods for Asphalt Content of Bituminous Mixtures by the Nuclear Method
D5444 Test Method for Mechanical Size Analysis of Extracted Aggregate
D6307 Test Method for Asphalt Content of Hot-Mix Asphalt by Ignition Method
D6857 Test Method for Maximum Specific Gravity and Density of Bituminous Paving Mixtures Using Automatic Vacuum Sealing Method
ICS Number Code 93.080.20 (Road construction materials)
UNSPSC Code 30121601(Asphalt); 30111800(Aggregates)