Example: Determine the percentage of voids filled with asphalt and asphalt binder effective for paving mixture with relative compaction equal to 96%. Asphalt content = 5.5% of total mix, (G asphalt=1.03), combined aggregate Gsb-2.67 gm/cm³, maximum theoretical density Gmm= 2.480 gm/cm³, Lab (marshall) Density 2.490 gm/cm³.

Example: Determine the percentage of voids filled with asphalt and asphalt binder effective for paving mixture with relative compaction equal to 96%. Asphalt content = 5.5% of total mix, (G asphalt=1.03), combined aggregate Gsb-2.67 gm/cm³, maximum theoretical density Gmm= 2.480 gm/cm³, Lab (marshall) Density 2.490 gm/cm³.

Traffic and Highway Engineering

5th Edition

ISBN:9781305156241

Author:Garber, Nicholas J.

Publisher:Garber, Nicholas J.

Chapter18: Bituminous Materials

Section: Chapter Questions

Problem 4P

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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.

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Example: Determine the percentage of voids filled with asphalt and asphalt binder
effective for paving mixture with relative compaction equal to 96%. Asphalt content=
5.5% of total mix, (G asphalt=1.03), combined aggregate Gsb-2.67 gm/cm³,
maximum theoretical density Gmm= 2.480 gm/cm³, Lab (marshall) Density 2.490
gm/cm³.

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A highway of 85 Km length, it is required to be paved by 4 cm wearing course. The width of this highway is 12 m. For requirement of the asphalt concrete mix plant manager, determine the quantity by weight for each type of aggregate and asphalt if the specific gravity of asphalt concrete mixture is 2.35 and the optimum asphalt content = 5.3%? • Details of aggregates Sieve Size (in) % Passing by Weight % Retained 3/4 100 0 1/2 95 5 3/8 83 12 1/4 59 24 No. 4 43 16 No. 30 13 30 No. 200 7 6 Pan 7
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Pavement lab
Q1A In a Marshall test, the percentage of asphalt binder by total weight of aggregate is 5.3%. The bulk specifc gravity of aggregate (G)-2.582, the specifc gravity of asphalt binder (G)=1.000, and the density of water 3 (Yw)=1.000 g/cm. If the voids flled with asphalt (VFA) is 70.0% and the effective asphalt binder (Pbe) is 4.0% by total weight of mixture, determine the following properties: a. The absorbed asphalt binder (Pba) b. The bulk specifc gravity of the compacted mixture (Gmb) c. The voids in mineral aggregate (VMA) d. The voids in total mixture (VTM) e. The theoretical maximum specifc gravity of the loose mixture (Gmm) The effective specifc gravity of the aggregate (Gse) ال
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