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 9.9QP
To determine
The aging that occurs in asphalt cement and its types of aging of asphalt cement that are simulated in the laboratory.
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Discuss the aging that occurs in asphalt cement during mixing with aggregatesand in service. How can the different types of aging of asphalt cement besimulated in the laboratory?
Discuss five different desirable characteristics of aggregate used in asphalt concrete.
6. The following table shows the gradation of two
aggregates A and B which are to be blended to
produce an acceptable aggregate for use in
manufacturing asphalt concrete for highway pavement
construction. If the required limits of gradation for
asphalt concrete are shown in the table below,
determine a suitable ratio for blending aggregates A
and B to obtain the acceptable combined aggregate.
Sieve Size
3/4 in. (19 mm)
3/8 in. (9.5 mm)
No. 4 (4.25 mm)
No. 10 (2 mm)
No. 40 (0.425 mm)
No. 200 (0.075 mm)
A
100
80
50
43
20
4
Percent Passing by Weight
B
98
76
45
33
30
8
Required
Mix
96 to 100
65 to 80
40 to 55
35 to 40
15 to 35
5 to 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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- What is the most common polymer used for modifying asphalt cement? Briefly describe the interaction that occurs when asphalt and SBS are mixed.arrow_forwardA portland cement concrete mix requires mixing sand having a gradationfollowing the midpoint of the ASTM gradation band (Table 5.4) and gravelhaving a gradation following the midpoint of size number 467 of the ASTMgradation band (Table 5.5) at a ratio of 2:3 by weight. On a 0.45 power gradation chart, plot the gradations of the sand, gravel, and the blend. Is the gradation of the blend well graded? If not, what would you call it?arrow_forward5.6 Define the following terms: a. Saturated surface-dry condition of aggregates b. Absorption of aggregates c. Free water on aggregates d. Referring to Figure 5.9, which portion of the water in the aggregate reacts with the cement in the PCC mix?arrow_forward
- Problem 1: Answer the following question briefly: 1) Why is it important to follow standard tests exactly when testing Portland cement? 2) Is quartz rich with silica? Why it is not suitable raw material for cement production? 3) What is meant by the conversion of HAC? What are the consequences of the conversion of HAC? 4) Why the amount of gypsum added to clinker should be carefully controlled? 5) Compare the contributions of C,S and C,S to the strength of concrete? 6) What is the difference between false set and flash set? Problem 2: Assign each of the following cements to one of the ASTM Types I to V: 1) C,S = 26%, C,S = 52%, C,A = 5%, C,AF = 13%, Fineness 300 m?/Kg. 2) C,S = 56%, C,S = 22%, C,A = 9%, C,AF = 8%, Fineness 370 m²/Kg. 3) C,S = 63%, C,S = 14%, C,A = 15%, C,AF = 9%, Fineness 550 m?/Kg. 4) C,S = 49%, C,S = 28%, C,A = 7%, C,AF = 13%, Fineness 340 m?/Kg. 5) C,S = 41%, C,S = 37%, C,A = 2%, C,AF = 12%, Fineness 330 m?/Kg. Problem 3: Identify the major cement factories in…arrow_forwardThe relative amounts of the four chemicals in the final cement depends on the desired properties of the cement concrete. The table below gives the typical compound composition of different types of Portland cements Compound Composition No. C3S C,S C3A C4AF 1 60 13 9. 8 40 40 4 3 26 50 5 12 4 50 24 11 5 42 33 5 13 Depending on the properties of the different chemicals and their relative composition, identify the high early strength (HE) and low-heat (LH) cements from the table. Give detail explanation for your answerarrow_forwardWhy 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?arrow_forward
- 46.5 kg (102.3 lb) of fine aggregate is mixed with 72.3 kg (159.1 lb) of coarse aggregate. The fine aggregate has a moisture content of 2.0% and absorption of 3.4%, whereas the coarse aggregate has a moisture content of 1.3% and absorption of 3.8%. What is the amount of water required to increase the moisture contents of both fine and coarse aggregates to reach absorption? Why is it important to determine the amount of water required to increase the moisture content of aggregate to reach absorption? Use one system of units only as specified by the instructor.arrow_forwardwhy do we need to know the Specific Gravity and Absorption of Fine Aggregate, Surface Moisture of Fine Aggregate, and how it is important in concretearrow_forwardE Q2: Two types of asphalt cement (A and B) have been tested with different temperatures to indicate the kinematic viscosity and the table below presented the results. 1- Draw the viscosity vs temperature chart, 2- Indicate the raixing and compaction temperatures ranges for each type, 3- Which one is more susceptible to temperature change? 130 140 Temperature, C Kinematic viscosity, centistoke Type A Type B 600 800 420 500 150 300 290 160 220 180 Dis 170 D857arrow_forward
- Discuss five different desirable characteristics of aggregate used in Portland cement concrete (PCC).arrow_forwardGive the conclusion and recommendation of this experiment: DETERMINATION OF SPECIFIC GRAVITY AND ABSORPTION OF FINE AGGREGATES.arrow_forward46.5 kg of fine aggregate is mixed with 72.3 kg of coarse aggregate. The fine aggregate has a moisture content of 2.0% and its absorption is 3.4% whereas the coarse aggregate has a moisture content of 1.3% and its absorption is 3.0%. Determine the amount of water required to increase the moisture content so that there is 1% free moisture in the aggregate blend.arrow_forward
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