In a Marshall asphalt mixture design test, the voids in mineral aggregate by the total volume of asphalt mixture is 13.0%, the asphalt mixture has a specific gravity of 2.442, the asphalt binder's specific gravity is 1.020, and the absorbed asphalt binder by weight of aggregate is 1.30% by weight. If the asphalt binder is combined with the aggregate at a ratio of 1:20 by weight, calculate the air voids content in the asphalt mixture (VTM) and the voids filled with asphalt (VFA).

In a Marshall asphalt mixture design test, the voids in mineral aggregate by the total volume of asphalt mixture is 13.0%, the asphalt mixture has a specific gravity of 2.442, the asphalt binder's specific gravity is 1.020, and the absorbed asphalt binder by weight of aggregate is 1.30% by weight. If the asphalt binder is combined with the aggregate at a ratio of 1:20 by weight, calculate the air voids content in the asphalt mixture (VTM) and the voids filled with asphalt (VFA).

Structural Analysis

6th Edition

ISBN:9781337630931

Author:KASSIMALI, Aslam.

Publisher:KASSIMALI, Aslam.

Chapter2: Loads On Structures

Section: Chapter Questions

Problem 1P

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Concept explainers

Asphalt Binders and Mixtures

Asphalt binders are subsidiary products procured during the refining process of petroleum while manufacturing gasoline, diesel, and similar petroleum products. Asphalt binders are obtained from the residue that remains after the distillation of petroleum, this residue is further subjected to steam distillation and oxidation to remove the traces of gas oil present in the residue. Certain additives or modifiers are also added to asphalt binders to alter them to suit different applications.

Question

In a Marshall asphalt mixture design test, the voids in mineral aggregate by the total volume of
asphalt mixture is 13.0%, the asphalt mixture has a specific gravity of 2.442, the asphalt
binder's specific gravity is 1.020, and the absorbed asphalt binder by weight of aggregate is
1.30% by weight. If the asphalt binder is combined with the aggregate at a ratio of 1:20 by
weight, calculate the air voids content in the asphalt mixture (VTM) and the voids filled with
asphalt (VFA).

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