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solve question 3 please

solve question 3 please

Structural Analysis
Structural Analysis
6th Edition
ISBN:9781337630931
Author:KASSIMALI, Aslam.
Publisher:KASSIMALI, Aslam.
Chapter2: Loads On Structures
Section: Chapter Questions
Problem 1P
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solve question 3 please
Q1) A rural 4-lane highway is to be built between two towns. Select the binder performance grade to meet the Superpave criteria for a reliability level of 98%, given the following information about the project: Latitude = 46.77 Tair (max) (Seven-day average high air temperature) = 33.1 °C Standard deviation of the seven-day high air temperature = 1.8 °C Tair(min) (1-day minimum air temperature) = -21.3 °C Standard deviation of the 1-day minimum air temperature = 3.3 °C Q2) The following results were obtained from testing a certain asphalt binder: Original Asphalt RTFO aged PAV aged | asphalt asphalt DSR G' (kPa) | 8 (*) BBR S@ 60-sec (MPa) 0.98 2.1 6000 75 70 60 300 450 650 m @ 60-sec 0.6 0.5 0.4 DTT Failure Strain (%) | 2.5 % 2 % 1.2% Determine if the asphalt meets the Superpave specification requirements to resist the following distresses: (a) Rutting (b) Fatigue cracking (c) Low temperature cracking Q3) You are required to determine if a certain asphalt can be graded as PG 58 - 28. What aging 1 equipment 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.
Transcribed Image Text:Q1) A rural 4-lane highway is to be built between two towns. Select the binder performance grade to meet the Superpave criteria for a reliability level of 98%, given the following information about the project: Latitude = 46.77 Tair (max) (Seven-day average high air temperature) = 33.1 °C Standard deviation of the seven-day high air temperature = 1.8 °C Tair(min) (1-day minimum air temperature) = -21.3 °C Standard deviation of the 1-day minimum air temperature = 3.3 °C Q2) The following results were obtained from testing a certain asphalt binder: Original Asphalt RTFO aged PAV aged | asphalt asphalt DSR G' (kPa) | 8 (*) BBR S@ 60-sec (MPa) 0.98 2.1 6000 75 70 60 300 450 650 m @ 60-sec 0.6 0.5 0.4 DTT Failure Strain (%) | 2.5 % 2 % 1.2% Determine if the asphalt meets the Superpave specification requirements to resist the following distresses: (a) Rutting (b) Fatigue cracking (c) Low temperature cracking Q3) You are required to determine if a certain asphalt can be graded as PG 58 - 28. What aging 1 equipment 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.
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