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 9.15QP
To determine
The standard PG grade asphalt binder grade for each of the conditions shown in the Table P9.15.
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As a materials engineer working for a highway department, what standard PG
asphalt binder grade would you specify for each of the conditions shown in
Table P9.15 (show all calculations and fill in the table)?
TABLE P9.15
Seven-Day Maximum
Pavement Temperature
Minimum Pavement
Recommended
Temperature
PG Grade
Standard
Standard
50%
98%
Case Mean, °C
Deviation, °C
Mean, °C Deviation, °C Reliability Reliability
1
39
-32
3.5
54
1.5
-17
2
3
69
2.5
What standard PG asphalt binder grade should be selected under the following conditions:a. The seven-day maximum pavement temperature has a mean of 62°C and a minimum pavement temperature of -15°C. (table9.2)
b. According to part a, what is your recommendation for 20 million ESALs and 50 km/h speed? (table ESALs)
c. For 50 million ESALs and 80 km/h speed. (table ESALs)
As a materials engineer working for a highway department, what standard PG asphalt binder grade would you specify for each of the conditions shown in the table below. Show all calculations.
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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- As a materials engineer working for a highway department, what standard PGasphalt binder grade would you specify for each of the conditions shown inTable P9.15 (show all calculations and fill in the table)?arrow_forwardInstructions: Please provide complete solution and box final answer/s. Problem: As a materials engineer working for a highway department, what standard PG asphalt binder grade would you specify for each of the conditions shown in the table below. Show all calculations.arrow_forwardProblem #1 The following figure shows the results from the dynamic modulus test for asphalt mixtures. The specimen is 4" in diameter and 6" in height. The gauge length for the axial LVDT is 4". Time lag is 0.25s. Find |E*I, and phase angle . Axial force(lbf) 65 60 40 20 0 -20 -40 -65 0 Dynamic modulus test result (gauge length = 4") 0.5 Time (second) 1 0.0010 0.0009 0.0006 0.0003 0 force (lbf) disp (in.) -0.0003 -0.0006 -0.0009 -0.0010 1.5 Axial displacement(in) 4"arrow_forward
- Q3) You are required to determine if a certain asphalt can be graded as PG 58 - 28. What agingequipment and testing temperatures should use for the following tests? Explain the rational behind selecting the above testing temperatures.a) Dynamic Shear Rheometer for rutting analysis.b) Dynamic Shear Rheometer for fatigue cracking analysis.c) Bending Beam Rheometer for low temperature cracking analysis.d) Direct Tension Tester for low temperature cracking analysis.arrow_forwardIdentify the following statement whether it is (True) or (False). If your answer is false, give the correct answer? 1- Dowel bars are generally provided across longitudinal joints of rigid pavement. 2- The migration of asphalt cement to the surface of the pavement under wheel loads especially at high temperatures is called stripping. 3- The lower the penetration of asphalt binder, the softer the asphalt binder. 4- We need to keep the aggregate for 24 hours in an oven at 105°C to obtain the aggregate dry weight. 5- It is important to design thicker layers of asphalt if the subgrade materials are not strong enough to withstand expected loads during their life cycle. 6- The medium curing asphalt is produced by blending asphalt with diesel oil.arrow_forwardBinder grade of asphalt selected for a highway construction based on the temperature recordsfound to be PG70-16. Answer to the following questions:• If traffic speed is high (more than 70 km/h) and 0.2 million ESAL, what is your suggestionfor the binder grade?• If traffic speed is slow (less than 20km/h) and traffic volume is very high (40 million EASL), what is your suggestion for the binder grade?arrow_forward
- 18. Refer to Tables 2-1.1 and 2-1.2 and Figure 18.9 attached. What would be the thickness of asphalt concrete according to the Asphalt Institute required to support 950,000 ESAL over a 4-inch granular base? Use the resilient modulus data provided in Table 2-1.2 to perform your calculations. Select the best answer.a. 4.0 inchesb. 5.0 inchesc. 7.0 inchesd. 12.0 inchesarrow_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_forwardPlease kindly answer both.. please give me both answersarrow_forward
- The following results were obtained for an asphalt binder. Determine if the binder meets the Superpave specifications for the following. Justify your answer. a) Rutting; b) Fatigue cracking and c) Low-Temp. crackingarrow_forwardDiscuss various tests used for the quality of aggregate used in flexible pavements.arrow_forwardWhat are the organic substances in the production of warm asphalt? Please explain with reference.arrow_forward
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