JAWAHARLAL NEHRU TECHNOLOGICAL UNIVERSITY HYDERABAD

Course Objective

To evaluate the physical and mechanical properties of subgrade, and pavement

materials, and design flexible and rigid pavements subjected to wheel loads.

Course Outcome

Student should be able to understand various pavement material characterization

techniques, and able to design a suitable pavement for known wheel loading characteristics and subgrade soil conditions.

UNIT - I

Introduction: Types and component parts of pavements, Factors affecting design and performance of pavements. Highway and airport pavements, field CBR, field plate load test, modulus of subgrade reaction, resilient modulus, Suitability of soil, Compaction equipment and Compaction Control.

UNIT - II

Stresses and strains in flexible pavements: Stresses and strains in an infinite elastic half space use of Boussinesq's equations - Burmister's two layer and three layer theories; Wheel load stresses, various factors in traffic wheel loads; Equivalent single wheel load of multiple wheels. Repeated loads and EWL factors.

UNIT - III

Flexible pavement design methods for highways and airports: Empirical, semi-empirical and theoretical approaches; Development, principle, design steps of the different pavement design methods including AASHTO, Asphalt Institute, Shell Methods. IRC method of pavement design.

UNIT - IV

Stresses in rigid pavements: Types of stresses and causes; Introduction to Westergaard's equations for calculation of stresses in rigid pavement due to the influence of traffic and temperature; Considerations in rigid pavement analysis, EWL; wheel load stresses, warping stresses, frictional stresses, combined stresses.

UNIT - V

Rigid pavement design: Design of cement concrete pavement for highways and runways; Design of joints, reinforcements, tie bars, dowel bars. IRC method of design; Design of continuously reinforced concrete pavements.

TEXT BOOKS:

• 1. Atkins, N. Harold, Highway Materials, Soils and Concretes, Fourth Edition, 2002, Prentice- Hall. nd
• 2. Yang H Huang - Pavement Analysis and Design, 2 Edition, Pearson Education
• 3. Yoder. J. & Witzorac Mathew, W. Principles of Pavement Design, John Wiley & Sons Inc

REFERENCES:

• 1. Kerbs Robert D. and Richard D. Walker, Highway Materials, McGraw-Hill, Design of Functional Pavements, Nai C. Yang, McGraw Hill Publications
• 2. Concrete Pavements, AF Stock, Elsevier, Applied Science Publishers
• 3. Pavement Analysis & Design, Yang H. Huang, Prentice Hall Inc.
• 4. Pavement and Surfacing for Highway & Airports, Micheal Sargious, Applied Science Publishers Limited.
• 5. IRC: 37 & 58 Codes for Flexible and Rigid Pavements Design. M. Tech – I Year – II Sem. (Geotechnical Engineering)