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 9.5QP
To determine
Temperature susceptibility of asphalt and its effect on asphalt concrete pavement’s performance.
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Temperature has a large effect on the asphalt viscosity. On one graph, plot the relationship between asphalt viscosity (logarithmic) and temperature for two cases: (a) a low-temperature susceptible asphalt and (b) a high-temperature susceptible asphalt. Label all axes and relations.
Problem: A test and process is also conducted to determine the asphalt content of the emulsified asphalt. A 300 grams of sample
is poured in the iron still and heated to 250C for 15 minutes. The sample is then weighed after heating. The weights are as follows:
a. Mass of iron still: 4008g
b. Mass of iron still with sample after heating: 4198g
State four different asphalt modifiers that can be added to asphalt or asphalt mixtures, and indicate the effect of each.
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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- Briefly discuss the chemical composition of asphalt.arrow_forwardQUESTION 11 Which one is NOT the benefit of compaction of asphalt concrete pavement? a. Ensure the mixture is waterproof. b. Prevent further compaction. C. Increase oxidation of the asphalt. d. Provide shear strength or resistance to rutting.arrow_forwardI need answer within 20 minutes please please with my best wishesarrow_forward
- Briefly describe the process of distillation by which asphalt cement is produced from crude petroleum. Also, describe in detail how you would obtain asphalt binders that can be used to coat highly siliceous aggregatesarrow_forwardWhat are the organic substances in the production of warm asphalt? Please explain with reference.arrow_forwardSoftening point test 1- Is the point of softening equal to the melting point?2- If the softening point of the asphalt is greater than 150 m, what parts can be taken for the calculation of softening?3- Define the point of softening , explaining the conditions on which it dependsarrow_forward
- Questions 30 is based on the information below: An asphalt concrete mix design has the following properties. The densities of the binder and aggregate are 1.090 g/cm³ and 2.760 g/cm³, respectively. The bulk density of the entire mix is 2.220 g/cm³. The percent binder content is 6.2% (by weight). Assume no absorption. V₁= 1.0 cm³ Volume Vv Vb Vs AIR Binder Aggregate Mass Mb Ms Mt 30. As an engineer, you are asked to use this mix design for a 25 kilometer-long section of roadway where the total pavement width is 8.0 meters and the thickness is 15 centimeters. What is the (a) total volume of binder and (b) the total volume of aggregate that you would need to purchase? Also, determine the (c) total %air voids in the mix.arrow_forwardList the typical four types of materials in pavement engineering and describe the three basic structures of asphalt mixture in civil engineering.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_forward
- Binder 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_forwarddiscuss BRIEFLY the effects of at least 10 Deficiencies in Asphalt Mixarrow_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
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