Answered: Using Marshall method to design an…

Elements Of Electromagnetics

7th Edition

ISBN:9780190698614

Author:Sadiku, Matthew N. O.

Publisher:Sadiku, Matthew N. O.

ChapterMA: Math Assessment

Section: Chapter Questions

Problem 1.1MA

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Question

Using Marshall method to design an asphalt mix, the data in the
Table below were obtained. The bulk specific gravity test were conduct at 25°c
where γ water=1gm/cm³. The values of corrected stability (kN), flow (mm) and theoretical
maximum specific gravity of asphalt mixtures for each asphalt cement percent
are given in the Table below. If the value of bulk specific gravity of
aggregate mixture is(Gbam= 2.655), determine the optimum asphalt content and
check if the value of Marshall properties at O.A.C satisfied the Iraqi State
Commission for Roads and Bridges (SCRB) requirements? What are you suggest if
one property not satisfied the (SORB) requirements?

A.C.%
Bulk density
Stability
8.66
Flow
Va
5.5
VMA
VFA
2.3
2.8
4
2.345
15.05
63.4
4.5
2.355
9.54
4.9
15.13
67.6
2.380
10.23
3.3
3.8
14.68
74.0
5.5
2.376
9.22
3.8
3.0
15.31
79.2
2.350
8.11
4.5
2.8
16.64
83.2
SCRB
4-2
5-3
14

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