Materials for Civil and Construction Engineers (4th Edition)
4th Edition
ISBN: 9780134320533
Author: Michael S. Mamlouk, John P. Zaniewski
Publisher: PEARSON
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Chapter 9, Problem 9.28QP
To determine
The percent voids in total mix, percent voids in mineral aggregate and the percent voids filled with asphalt.
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Questions 30 is based on the information below:
An asphalt concrete mix design has the following properties. The densities of the binder and aggregate
are 1.090 g/cm³ and 2.760 g/cm³, respectively. The bulk density of the entire mix is 2.220 g/cm³.
The percent binder content is 6.2% (by weight). Assume no absorption.
V₁= 1.0 cm³
Volume
Vv
Vb
Vs
AIR
Binder
Aggregate
Mass
Mb
Ms
Mt
30. As an engineer, you are asked to use this mix design for a 25 kilometer-long section of roadway where
the total pavement width is 8.0 meters and the thickness is 15 centimeters. What is the (a) total volume
of binder and (b) the total volume of aggregate that you would need to purchase? Also, determine the
(c) total %air voids in the mix.
Use the following volumetric relationships for asphalt mix analysis:
VTM = 100 (1 - Gmb)
VFA = 100
3. An asphalt concrete specimen has the following properties:
Asphalt content = 5.5 % by total weigh of mix
Bulk specific gravity of the mix = 2.475
Theoretical maximum specific gravity = 2.563
Bulk specific gravity of aggregate = 2.689
Assuming there is no absorption of binder, calculate the following:
(a) Percent Voids in Total Mix
(b) Percent Voids in Mineral Aggregate:
VMA – VTM
VMA
(c) Percent Voids filled with asphalt:
VMA = = (100
-
Gmb
Ps
Gsb
An asphalt concrete specimen has
the following properties:
• Asphalt content = 5.5% by total
%3D
weight of mix
• Bulk specific gravity of the mix =
2.475
• Theoretical maximum
specific of gravity = 2.563
• Bulk specific gravity aggregate =
%3D
2.689
Ignoring absorption, compute the
percent VFA
Select one:
A. 67.2%
B. 68.1%
C. 76.3%
D. 73.8%
Chapter 9 Solutions
Materials for Civil and Construction Engineers (4th Edition)
Ch. 9 - Prob. 9.1QPCh. 9 - Prob. 9.2QPCh. 9 - Prob. 9.3QPCh. 9 - Prob. 9.4QPCh. 9 - Prob. 9.5QPCh. 9 - Prob. 9.6QPCh. 9 - Prob. 9.7QPCh. 9 - What are the engineering applications of each of...Ch. 9 - Prob. 9.9QPCh. 9 - Prob. 9.10QP
Ch. 9 - Prob. 9.11QPCh. 9 - Prob. 9.12QPCh. 9 - Prob. 9.13QPCh. 9 - Prob. 9.14QPCh. 9 - Prob. 9.15QPCh. 9 - Prob. 9.16QPCh. 9 - Prob. 9.17QPCh. 9 - Prob. 9.18QPCh. 9 - What are the objectives of the asphalt concrete...Ch. 9 - Prob. 9.20QPCh. 9 - Prob. 9.21QPCh. 9 - Prob. 9.22QPCh. 9 - Prob. 9.23QPCh. 9 - Prob. 9.24QPCh. 9 - Prob. 9.25QPCh. 9 - An asphalt concrete mixture includes 94% aggregate...Ch. 9 - Prob. 9.27QPCh. 9 - Prob. 9.28QPCh. 9 - Prob. 9.29QPCh. 9 - Prob. 9.30QPCh. 9 - Based on the data shown in Table P9.31, select the...Ch. 9 - Based on the data in Table P9.32, determine the...Ch. 9 - Given the data in Table P9.33, select the blend...Ch. 9 - The Marshall method of mix design has been widely...Ch. 9 - Prob. 9.35QPCh. 9 - Prob. 9.36QPCh. 9 - Prob. 9.37QPCh. 9 - Prob. 9.38QPCh. 9 - Prob. 9.39QPCh. 9 - Prob. 9.40QPCh. 9 - Prob. 9.41QPCh. 9 - Prob. 9.42QPCh. 9 - Prob. 9.43QPCh. 9 - What is the purpose of adding fly ash to asphalt...Ch. 9 - Prob. 9.45QPCh. 9 - Prob. 9.47QPCh. 9 - Prob. 9.48QP
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- An asphalt concrete specimen has the following properties:asphalt content = 5.9% by total weight of mix bulk specific gravity of the mix = 2.457 theoretical maximum specific gravity = 2.598 bulk specific gravity of aggregate = 2.692Calculate the percents VTM, VMA, and VFA.arrow_forwardAn asphalt concrete specimen has the following properties:Asphalt content = 5.5% by total weight of mixBulk specific gravity of the mix = 2.475Theoretical maximum specific gravity = 2.563Bulk specific gravity of aggregate = 2.689 Ignoring absorption, calculate the percents VTM, VMA, and VFA.arrow_forwardAn asphalt concrete specimen has the following properties:Asphalt content=5.3% by total weight of mixBulk specific gravity of the mix=2.442Theoretical maximum specific gravity=2.535Bulk specific gravity of aggregate=2.703Calculate the percents VTM, VMA, and VFA.arrow_forward
- Given the following information from an asphalt mix: Gsb = 2.705 Gmm = 2.534 Gmb = 2.432 Gb = 1.014 Pb = 5.7% Unit weight of water = 62.4 Ib/ft3 Assume 1 ft for total volume. Draw mass/volume relationship and determine Mass of Mix (Mm) Ib., Mass of Binder (Mb) Ib., Volume of Binder (Vb) pcf, Volume of Void-less Mix (Vmm) Volume of Air (Va) pcf, Volume of Absorbed Asphalt (Vba) pcf, Volume of Effective Asphalt (Vbe) pcf. In addition, calculate Air Voids (VA) %, Voids in Mineral Aggregate (VMA) %, and Voids Filled with Asphalt (VFA)arrow_forwardA compacted asphalt concrete specimen has the following properties:a. Asphalt content = 5% by total weight of the mixb. Bulk specific gravity of the mix = 2.500c. Theoretical maximum specific gravity = 2.610d. Bulk specific gravity of the aggregate = 2.725 Ignoring absorption, compute the percents VTM, VMA, and VFA.arrow_forwardAs part of mix design, a laboratory-compacted cylindrical asphalt specimenis weighed for determination of bulk-specific gravity. The following numbersare 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) is2.531, what would be the air void content of the specimen in percent?arrow_forward
- 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?arrow_forwardA compacted asphalt concrete specimen has the following properties:Asphalt content = 5% by total weight of the mixBulk specific gravity of the mix = 2.500Theoretical maximum specific gravity = 2.610Bulk specific gravity of the aggregate = 2.725Ignoring absorption, compute the percents VTM, VMA, and VFA.arrow_forward3. 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 grams • Mass when submerged in water = 723.9 grams • Mass of Saturated Surface Dry (SSD) = 1271.9 grams %3D a.What is the bulk specific gravity of the compacted specimen (Gmb)? b.lf the maximum theoretical specific gravity of the specimen (Gmm) is 2.531, what would be the air void content of the specimen in percent? c. If the bulk specific gravity of aggregates is 2.675 and asphalt content is 5.5%, what is the voids in mineral aggregate and voids filled with asphalt in percent? Ignore absorption.arrow_forward
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