Traffic and Highway Engineering
5th Edition
ISBN: 9781305156241
Author: Garber, Nicholas J.
Publisher: Cengage Learning
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Chapter 18, Problem 13P
To determine
The asphalt absorption of the optimum mix.
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% absorbed asphalt by
aggregate(Ps2) equal to zero when
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draw the graphs of asphalt binder content on the x-axis versus the following on the y-axisa) Marshall stabilityb) Marshall flowc) Percent air voids in the total mixture, Pad) VMAe) VFA.II selecting the optimum asphalt binder content
How much is the maximum asphalt content range percentage (%) for a typical design by weight of total mix?
Chapter 18 Solutions
Traffic and Highway Engineering
Ch. 18 - Prob. 1PCh. 18 - Prob. 2PCh. 18 - Prob. 3PCh. 18 - Prob. 4PCh. 18 - Given the specifications for an asphaltic concrete...Ch. 18 - Given the particle size distributions of two...Ch. 18 - Given the particle size distributions of two...Ch. 18 - Given four different types of aggregates to be...Ch. 18 - Prob. 9PCh. 18 - Prob. 10P
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- Compute the dust proportion for the asphalt mixture having the following properties:arrow_forwardAn asphalt sample which is claimed to be AC- 20 is tested by an agency. Which test result will reject the sample O Viscosity at 60•C on original sample = 1850 Poise Ductility at 25C on TFO aged sample = 27 cm Penetration at 25 •C = 51 O Viscosity at 60 C on TFO aged sample = 11250 Poisearrow_forwardQ2: Complete the following statements: 1- Weight of aggregates in Marshal sample is gm. 2- Standard height of Marshall sample is .......... mm. 3- Marshall hammer drop from ............ inch. 4- Maximum Gm is the unit weight of asphalt sample without 5- Asphalt and aggregates are mixing at 160 °C with tolerance of ............... °C.arrow_forward
- Define temperature susceptibility in Asphalt producrion.arrow_forwarddiscuss BRIEFLY the effects of at least 10 Deficiencies in Asphalt Mixarrow_forwardThe table below lists data used in obtaining a mix design for an asphalt paving mixture. If themaximum specific gravity of the mixture is 2.41 and the bulk specific gravity is 2.35,Determine:(a) the bulk specific gravity of aggregates in the mix(b) the asphalt absorbed (c) the effective asphalt content of the paving mixture(d) the percent voids in the mineral aggregate VMAarrow_forward
- The table below lists data used in obtaining a mix design for an asphalt paving mixture. If themaximum specific gravity of the mixture is 2.41 and the bulk specific gravity is 2.35,Determine:(a) the bulk specific gravity of aggregates in the mix (b) the asphalt absorbed (c) the effective asphalt content of the paving mixture (d) the percent voids in the mineral aggregate VMA.arrow_forwardChoose standard PG asphalt binder grade for the following condition: (show your calculation) The seven-day maximum pavement temperature has a mean of 45°C and standard deviation of 4°C The minimum pavement temperature has a mean of -26C and a standard deviation of 2.0°C. a) At reliability of 84% b) At reliability of 98%.arrow_forwardWhat 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)arrow_forward
- The table below lists data used in obtaining a mix design for an asphalt paving mixture. If the maximum specific gravity of the mixture is 2.41 and the bulk specific gravity is 2.35, Determine:(a) the bulk specific gravity of aggregates in the mix(b) the asphalt absorbed(c) the effective asphalt content of the paving mixture (d) the percent voids in the mineral aggregate VMA.arrow_forwardA 7-day average high temperature of the pavement at a ¾” depth is expected to be 138 degrees F (std. dev. 3.5 deg. F), and the average low temperature in the pavement is expected to reach 10 degrees F (std. dev. 2.5 deg. F). The pavement will be used to repave the intersection of a busy local road. Address the following: a) Determine the performance grade of the asphalt that should be used for this pavement with 98% reliability. b) Discuss the general considerations for ductility of the binder for the conditions stated. c) If a penetration test yields a penetration of 8.5 mm into the asphalt, list its penetration grade, viscosity grade, and expected flashpoint. d) Discuss the suitability of the addition of lime to the pavement mix.arrow_forwardWhat are the components of hot-mix asphalt? What is the function of each component in the mix?arrow_forward
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