A::Select the optimum asphalt content for the following data?% ofBulkStabilityFlowAsphaltdensityg/ccМаxKNVFA%VMA%VTM %(mm)sp.gr2.312.49105719.18.22.5842.352.4411.36316.96.152.74.52.382.412.67616.23.82.9852.362.389.57915.83.53.65.5В:The wearing course of asphalt is compacted to density of (2.395 gm/cm³). Using 5.5% asphaltcement by weight of total mixture (Gs=1.04), assuming that the absorbed asphalt equal to(0.8%) by weight of aggregate and bulk G of aggregate (2.66 gm/cm. Determine: A.V%,V.M.A% and V.F.A% ?

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A:: Select the optimum asphalt content for the following data? %of Bulk Stability Flow Asphalt density g/cc Мах KN VFA% VMA% VTM % (mm) sp.gr 2.31 2.49 10 57 19.1 8.2 2.58 4 2.35 2.44 11.3 63 16.9 6.15 2.7 4.5 2.38 2.4 12.6 76 16.2 3.8 2.98

A:: Select the optimum asphalt content for the following data? %of Bulk Stability Flow Asphalt density g/cc Мах KN VFA% VMA% VTM % (mm) sp.gr 2.31 2.49 10 57 19.1 8.2 2.58 4 2.35 2.44 11.3 63 16.9 6.15 2.7 4.5 2.38 2.4 12.6 76 16.2 3.8 2.98

Traffic and Highway Engineering

5th Edition

ISBN:9781305156241

Author:Garber, Nicholas J.

Publisher:Garber, Nicholas J.

Chapter19: Design Of Flexible Highway Pavements

Section: Chapter Questions

Problem 13P: Repeat Problem 19-7 using two different depths of untreated aggregate bases of 6 in. and 12 in....

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Concept explainers

Design of pavements

Pavement is a structure that is made up of different layers such as sub-base course layer, base course layer, binder course, and a surface course formed with different materials such as gravel, above the subgrade soil constructed to act as a path or carriageway enabling the movement of vehicles. The surface of the pavement should possess characteristics such as adequate friction, light reflection, and drainage. The pavements are classified based on structural design into rigid pavements, flexible pavements, composite pavements, and unpaved pavements. The process of determining a suitable pavement type, its constituent layers, and its thickness is called pavement design.

Question

A::
Select the optimum asphalt content for the following data?
% of
Bulk
Stability
Flow
Asphalt
density
g/cc
Маx
KN
VFA%
VMA%
VTM %
(mm)
sp.gr
2.31
2.49
10
57
19.1
8.2
2.58
4
2.35
2.44
11.3
63
16.9
6.15
2.7
4.5
2.38
2.4
12.6
76
16.2
3.8
2.98
5
2.36
2.38
9.5
79
15.8
3.5
3.6
5.5
В:
The wearing course of asphalt is compacted to density of (2.395 gm/cm³). Using 5.5% asphalt
cement by weight of total mixture (Gs=1.04), assuming that the absorbed asphalt equal to
(0.8%) by weight of aggregate and bulk G of aggregate (2.66 gm/cm. Determine: A.V%,
V.M.A% and V.F.A% ?

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Step 1 : Data

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Step 2 : Formula for OAC (Optimum Asphalt Content)

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Step 3 : Bulk density vs Asphalt content Graph

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Step 4 : Stability vs Asphalt content Graph

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Step 5 : VTM vs Asphalt content Graph

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