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 9.20QP
To determine
The importance of having optimum binder content in asphalt concrete and its typical range of binder content in asphalt concrete.
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Why is it important to have optimum binder content in asphalt concrete?What would happen if a less-than-optimum binder content is used? Whatwould happen if more than the optimum value is used? What is the typicalrange of binder content in asphalt concrete?
Discuss five different desirable characteristics of aggregate used in asphalt concrete.
How is the load supported by asphalt concrete in the cases of tension and compression? Under what conditions is the asphalt concrete layer subjected to tension?
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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- Given the specifications for an asphaltic concrete mixture and the results of a sieve analysis, determine the proportion of different aggregates to obtain the required gradation. Coarse aggregates: 60% Fine aggregates: 35% Filler: 5%arrow_forwardGiven four different types of aggregates to be used to produce a blended aggregate for use in the manufacture of asphaltic concrete, determine the bulk specific gravity of the aggregate mix.arrow_forwardAnswer the void ............... is one of aggregate properties that have a significant effect in improving the interconnect between an aggregate particle and asphalt binderarrow_forward
- Why angular and rough aggregate is good for Asphalt concrete? Explain the answer by relating the texture to other properties of aggregate.arrow_forwardBased 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.arrow_forwardA concrete mix with a 75 mm slump, w/c ratio of 0.50, and sand with a fineness modulus of 2.4 contains 1009 kg/m3of coarse aggregate. Compute the required mass of coarse aggregate per cubic meter. To adjust the mix so as to increase the compressive strength, the water–cement ratio is reduced to 0.45. Will the quantity of coarse aggregate increase, decrease, or stay the same? Explain your answer.arrow_forward
- A compacted asphalt concrete specimen has the following propertiesAsphalt Content = 5% by total weight of the mixBulk specific gravity of the mix = 2.485Theoretical maximum specific gravity = 2.595Bulk specific gravity of the aggregate = 2.715Absorption = 1.5%Compute the percent's VTM, VMA, and VFAarrow_forwardA concrete aggregate mix must contain at least 31% sand by volume for proper batching. One source of material, which has 25% sand and 75% coarse aggregate, sells for $3 per cubic meter (m3). Another source, which has 40% sand and 60% coarse aggregate, sells for $4.40/m3. Determine the least cost per cubic meter of blended aggregates.arrow_forwardIn proportioning a concrete mix, the coarse and fine aggregates had the following properties respectively; Coarse: Dry weight: 800lb, 3,2% MC, 2.0% AC, Fine: Dry weight 350 lb, 1.2% MC, 2.9% AC. How much should the water be adjusted to account for the agregate moisture?arrow_forward
- Based on the ASTM C33 standard for fine aggregate for Portland cement, what is the minimum percentage of aggregates that must pass the number 30 sieve in order to meet the ASTM standard?arrow_forwardif my Fineness modulus for fine aggregates is 1.88, does it meet the standards fineness modulus for dine aggregates? And if my Fineness modulus for coarse aggregate is 2.61, does it also meet the standards? Explainarrow_forwardExplain the Penetration Test of Asphalt Cement in brief and also its significance & use.arrow_forward
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