Materials for Civil and Construction Engineers (4th Edition)
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 9.31QP

Based on the data shown in Table P9.31, select the blend for a Superpave design aggregate structure. Assume <0.3 million ESAL and 19 mm nominal maximum aggregate size.

TABLE P9.31

Data Blend
1 2 3
Gmb 2.451 2.465 2.467
Gmm 2.585 2.654 2.584
Gb 1.030 1.030 1.030
Pb 5.9 5.5 5.8
Ps 94.1 94.5 94.2
Pd 4.5 4.5 4.5
Gsb 2.657 2.667 2.705
Hini 127 135 124
Hdes 113 114 118
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Based on the data shown in Table P9.31, select the blend for a Superpavedesign aggregate structure. Assume 60.3 million ESAL and 19 mm nominalmaximum aggregate size.
Laboratory specific gravity and absorption tests are run on two coarse aggregate sizes, which have to be blended. The results are as follows:Aggregate A: Bulk specific gravity = 2.491; absorption = 0.8,Aggregate B: Bulk specific gravity = 2.773; absorption = 4.6,a. What is the specific gravity of a mixture of 60% aggregate A and 40% aggregate B by weight?b. What is the absorption of the mixture?
Laboratory specific gravity and absorption tests are run on two coarse aggregate sizes, which have to be blended. The results are as follows:Aggregate A: Bulk specific gravity = 2.814; Absorption = 0.4% Aggregate B: Bulk specific gravity = 2.441; Absorption = 5.2% a. What is the specific gravity of a mixture of 50% aggregate A and 50% aggregate B by weight? b. What is the absorption of the mixture?
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