1. The severity of flexible pavement cracks is classified based on the depth of the crack2. In thick pavements with alligator cracking, the cracks most likely initiate from the tonpdown to the bottom.3. The pavement bleeding distress occurs when there is insufficient bitumen binder in theHot Mix.4. The distress usually caused by traffic (starting and stopping) called corrugation.5. The end result of the Fatigue (alligator) cracking is the Raveling distress.6. Faulting is longitudinal only and creates a "step" deformation of the rigid pavement.7. The severity of rigid pavement cracks is classified based on the width and the frequencyof the crack.8. In pavement treatments we always aim to improve ride quality, provide surfacedrainage and friction, and correct surface distresses and irregularities.9. The slab cracking is an unplanned longitudinal or diagonal structural crackis) that extendthrough the depth of the slab.10. A heavily rutted pavement can generally left untreated depending on the root ceuse offailure.True and false

1) False The severity of flexible pavement cracks are classified based on the width of the crack not…

1. The severity of flexible pavement cracks is classified based on the depth of the crack 2. In thick pavements with alligator cracking, the cracks most likely initiate from the top down to the bottom. 3. The pavement bleeding distress occurs when there is insufficient bitumen binder in the Hot Mix.

1. The severity of flexible pavement cracks is classified based on the depth of the crack 2. In thick pavements with alligator cracking, the cracks most likely initiate from the top down to the bottom. 3. The pavement bleeding distress occurs when there is insufficient bitumen binder in the Hot Mix.

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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4. The distress usually caused by traffic (starting and stopping) called corrugation. 5. The end result of the Fatigue (alligator) cracking is the Raveling distress. 6. Faulting is longitudinal only and creates a "step" deformation of the rigid pavement 7. The severity of rigid pavement cracks is classified based on the width and the frequency of the crack. 8. In pavement treatments we always aim to improve ride quality, provide surface drainage and friction, and correct surface distresses and irregularities. 9. The slab cracking is an unplanned longitudinal or diagonal structural crackis) that extend through the depth of the slab. 10. A heavily rutted pavement can generally left untreated depending on the root cause of failure. True and false
The rigid pavement (slab), due to its higher stiffness as characterized by elastic modulus, usually distributes the loading across a large pavement area. A. True B. False
An undowelled rigid pavement in a subdivision roadway has thickness equivalent to 300 mm. What should be the allowable tensile strength of concrete in MPa in order to support a wheel load equivalent to 9 kN?
The following figure shows concrete pavement with the layer thickness and elastic modulus as indicated. Assume modulus of rupture of 650 psi, load transfer coefficient of 3.2, serviceability loss from 4.5 to 2.5, and drainage coefficient of 0.9. The bedrock depth and loss of support is not considered for the subgrade. Use the design equation or monograph with 50% reliability to solve the following: 1) Determine the number of ESAL that the pavement can carry before failure. 2) If the daily traffic has 1080 single axles (20-kip), 400 single axles (24-kip), and 680 tandem axles (40-kip), and the annul traffic is the same over the design period, how many years would the concrete pavement last before failure? 8-inch Portland Cement Concrete Ec=4×106 psi 8-inch Granular Subbase Ec=30,000 psi Subgrade Mr = 5000 psi
Mark the correct statement: a) The ISC steps are: Compaction, Expansion and Simple Axial Compression b) The MR Resilience Module measures the variation in stress with permanent deformation, there is no rupture in the test c) The MR Resilience Module can be performed in a triaxial cell and dynamic loading that best represents the pavement
A rigid pavement is designed with an 11-inch slab thickness, 90% Rellability (ZR = -1.282), Es = 4 million psi, modulus of rupture of 600 psi, modulus of subgrade reaction of 150 lb/in?, a 2.8 load transfer coefficient, initial PSI = 4.8, final PSI of 2.5, overall standard deviation of 0.35, and a drainage coefficient of 0.80. The pavement has a 20-year design life. The pavement has three lanes in one direction (PDL = 0.80) and is conservatively designed for trucks that have one 20,000-lb single axle load (1.58), one 26,000-lb tandem axle (0.619), and one 34,000-b triple axle (0.593). What is the daily estimated truck traffic on the three lanes? logia (APSI) S,C¢(D@7% – 1.132) 3.0 [1.62410x10 |(D + 1)*46 | log10 (W) = Zg5, + 7.35 (log,0( D + 1)) – 0.06 +: +(4.22 - 0.327SI) log10 1+ 18.42 215.63/ De75 - 0.25
What is the primary component of a bituminous pavement? A) Cement B) Lime C) Bitumen D) Gypsum
3- What is meant by JRCP in rigid pavements? Explain its characteristics.
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