A 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.
A 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.
Chapter2: Loads On Structures
Section: Chapter Questions
Problem 1P
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A 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.
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