Pearson eText for Materials for Civil and Construction Engineers -- Instant Access (Pearson+)
4th Edition
ISBN: 9780137505586
Author: Michael Mamlouk, John Zaniewski
Publisher: PEARSON+
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Chapter 9, Problem 9.14QP
To determine
The standard PG grade asphalt binder grade for each of the conditions shown in the Table P9.14.
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Check out a sample textbook solutionStudents have asked these similar questions
9.14 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 P9.14 (show all calculations and fill in the table)?
Table P9.14
Seven-Day
Pavement
Maximum
Minimum Pavement
Temperature, °C
Temperature, °C
Recommended PG Grade
50%
98%
Case Mean, °C
Std. Dev., °C
Mean, °C Std. Dev., °C
Reliability
Reliability
1
43
1.5
- 29
2.5
2
51
-18
4
3
62
2.5
10
2
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)
Problem #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"
Chapter 9 Solutions
Pearson eText for Materials for Civil and Construction Engineers -- Instant Access (Pearson+)
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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- Q=What is the primary function of the pavement structure? Why do we use high quality materials as we go from bottom to top of the pavement structure? Answer in word formatarrow_forwardQuestion 18 A rigid pavement has a wheel load capacity of 53.96 kN. The allowable tensile stress of concrete is 1.37 MPa. Determine the thickness (cm) of the pavement if dowels are negligible. Express your answer in 1 decimal place.arrow_forwardElectromagnetic technologies offer effective nondestructive sensing techniques for determining characteristics of pavement. The propagation of electromagnetic waves through thematerial depends on its dielectric properties. The following data, kindly provided by the authorsof the article “Dielectric Modeling of Asphalt Mixtures and Relationship with Density” (J. ofTransp. Engr., 2011: 104–111), was used to relate y = dielectric constant to x = air void (%) for18 samples having 5% asphalt content: y <- c(4.55, 4.49, 4.50, 4.47, 4.47, 4.45, 4.40, 4.34, 4.43, 4.43, 4.42, 4.40, 4.33, 4.44, 4.40, 4.26, 4.32, 4.34)x <- c(4.35, 4.79, 5.57, 5.20, 5.07, 5.79, 5.36, 6.40, 5.66, 5.90, 6.49, 5.70, 6.49, 6.37, 6.51, 7.88, 6.74, 7.08)(a) Obtain the equation of the least squares line and interpret its slope.1(b) What proportion of observed variation in dielectric constant can be attributed to the approximate linear relationship between dielectric constant and air void.(c) Does there appear to be…arrow_forward
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