Please solve all the questions asked Q3: What are the purposes of the following:1. Tie bars2. Reinforcement in rigid pavements3. Inclined joints in rigid pavements.4. Low tire pressure5. Resilient ModulusQ4: What are the reasons behind the following asphalt pavement failures?2. Potholes 3. Block Cracking1. Stripping4. Depression5. Slippage Cracking

**Q3: Purposes**1. **Tie Bars**: In concrete pavements, tie bars serve as connectors between…

Answered: Q3: What are the purposes of the…

Traffic and Highway Engineering

5th Edition

ISBN:9781305156241

Author:Garber, Nicholas J.

Publisher:Garber, Nicholas J.

Chapter21: Pavement Management

Section: Chapter Questions

Problem 15P

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Question 18 A rigid pavement has a wheel load capacity of 53.96 kN. The allowable tensile stress of concrete is 1.37 MPa. Determine the thickness (cm) of the pavement if dowels are negligible. Express your answer in 1 decimal place.
Q, Discuss the following terms briefly: a, Emulsion breaking and Cutback curing, b, Water bound and aggregate base, c, Flexible pavement and Rigid pavements,
The thickness of a concrete pavement slab is 20 cm. It has a modulus of elasticity and Poisson's ratio of 3x105 kg/cm? and 0.15, respectively. Compute the radius of relative stiffness of the slab if it is resting on a sub grade of 5 kg/cm³ modulus.
18. Refer to Tables 2-1.1 and 2-1.2 and Figure 18.9 attached. What would be the thickness of asphalt concrete according to the Asphalt Institute required to support 950,000 ESAL over a 4-inch granular base? Use the resilient modulus data provided in Table 2-1.2 to perform your calculations. Select the best answer.a. 4.0 inchesb. 5.0 inchesc. 7.0 inchesd. 12.0 inches
Q=What is the primary function of the pavement structure? Why do we use high quality materials as we go from bottom to top of the pavement structure? Answer in word format
A rigid pavement has a wheel load capacity of 53.96 kN. The allowable tensile stress of concrete is 1.37 MPa. Determine the thickness (cm) of the pavement if dowels are negligible. Express your answer in 1 decimal place.
3. a) What is meant by dowel bar? Why it is used in the rigid pavement? b) Design the Dowel Bars for the following parameters: i) Design wheel load = 5100 kg ii) Design load transfer 40% iii) Slab thickness 30 cm iv) Joint width = 2.0 cm v) Modulus of dowel support = 42000 kg/em3 vi) Modulus of elasticity of dowel bar = 2x106 kg/cm2 vii) Modulus of subgrade reaction = 8 %3D viii) Grade of concrete = M 50
9.14 As a materials engineer working for a highway department, what standard PG asphalt binder grade would you specify for each of the conditions shown in Table P9.14 (show all calculations and fill in the table)? Table P9.14 Seven-Day Pavement Maximum Minimum Pavement Temperature, °C Temperature, °C Recommended PG Grade 50% 98% Case Mean, °C Std. Dev., °C Mean, °C Std. Dev., °C Reliability Reliability 1 43 1.5 - 29 2.5 2 51 -18 4 3 62 2.5 10 2
Every information is correct. Please do it correctly or let other experts do it. Don't reject A tyre with 230 kPa air pressure distributes a load over an area with circular contact radius of 200 mm. The pavement was constructed with a material that has a modulus of elasticity of 450 MPa and a Poisson's ratio of 0.40. 1.1 Calculate the radial-horizo talking stress and deflection at a point on the pavement surface under the center of the tyre load. [Function values table: A 1 B-0 C-O R-0.5 H=2]
Discuss the following terms briefly: Emulsion breaking and Cutback curing, Water bound and aggregate base, Flexible pavement and Rigid pavements Cross slope and side slope of road,
Q#3. Discuss root causes and remedial measures of the following distresses occurring in flexible pavements: Slippage failure, Potholes, Rutting and its types, Bitumen bleeding Answer in word format
As a materials engineer working for a highway department, what standard PG asphalt binder grade would you specify for each of the conditions shown in Table P9.14 (show all calculations and fill in the table)? TABLE P9.14 Seven-Day Maximum Pavement Temperature Minimum Pavement Recommended Temperature PG Grade Standard 98% Mean, °C Deviation, °C Reliability Reliability Standard 50% Case Mean, °C Deviation, °C 1 43 1.5 -29 2.5 2 51 -18 4 62 2.5 10

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