An asphalt concrete mix has a density of 2410 kg/m³ and an asphalt content of 5.5%. The asphalt absorption is 0.7%. The relative gravities of aggregates and asphalt are 2.67 and 1.04 respectively. The percentage of air-voids in the mix is, a) 3.5 % b) 4.2 % c) 3.1 % d) 4 % 12. VMA of the mix is, a) 14.7 % b) 13.3 % c) 15.3 % d) 16.1 %

An asphalt concrete mix has a density of 2410 kg/m³ and an asphalt content of 5.5%. The asphalt absorption is 0.7%. The relative gravities of aggregates and asphalt are 2.67 and 1.04 respectively. The percentage of air-voids in the mix is, a) 3.5 % b) 4.2 % c) 3.1 % d) 4 % 12. VMA of the mix is, a) 14.7 % b) 13.3 % c) 15.3 % d) 16.1 %

Traffic and Highway Engineering

5th Edition

ISBN:9781305156241

Author:Garber, Nicholas J.

Publisher:Garber, Nicholas J.

Chapter18: Bituminous Materials

Section: Chapter Questions

Problem 12P

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As part of mix design, a laboratory-compacted cylindrical asphalt specimen is weighed for determination of bulk-specific gravity. The following numbers are obtained:Dry mass in air = 1264.7 gramsMass when submerged in water = 723.9 gMass of saturated surface dry (SSD) = 1271.9 ga. What is the bulk-specific gravity of the compacted specimen (Gmb)?b. If the maximum theoretical specific gravity of the specimen (Gmm) is 2.531, what would be the air void content of the specimen in percent?
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