JAWAHARLAL NEHRU TECHNOLOGICAL UNIVERSITY HYDERABAD

Course Objectives:

• 1. Being able to recognize and use current common pavement design procedures.
• 2. Understanding common design and construction features important to the performance of both asphalt and concrete pavements.
• 3. The ability to design and recognize specification and construction activities that can improve the performance of pavements.
• 4. Evaluating the condition of pavements through surface condition surveys, smoothness, friction, load/deflection and other evaluation techniques.

Course Outcomes

At the end of the course, students will be able to

• 1. Design & Evaluate the pavements based on the functional and structural characteristics.
• 2. Prepare quality assurance and quality control plans in an attempt to construct better performing pavements.
• 3. Understand construction of flexible & rigid pavements.
• 4. Understand the maintenance of bitumen and cement concrete pavement.

UNIT - I

Stresses In flexible Pavement: Vehicle-Pavement Interaction: Transient, Random & Damping Vibrations, Steady State of Vibration, Experiments on Vibration, Stress Inducing Factors in Flexible and Rigid pavements; Stress In Flexible Pavements: Visco-Elastic Theory and Assumptions, Layered Systems Concepts, Stress Solutions for One, Two and Three Layered Systems, Fundamental Design Concepts. Stresses in Rigid Pavements: Westergaard’s Theory and Assumptions, Stresses due to Curling, Stresses and Deflections due to Loading, Frictional Stresses, and Stresses in Dowel Bars & Tie Bars.

UNIT - II

Design of Flexible Pavements: Factors effecting Design. Deflection studies in Flexible Pavements. Present Serviceability Index. IRC guidelines for Flexible Pavements. Pavement Performance and methods- AASHTO and Asphalt Institute Method. Need for Overlays, Overlays design methods for Flexible and Rigid pavements. Design of Rigid Pavements: Factors effecting Design - Wheel load & its repetition, subgrade strength & proportion, strength of concrete- modulus of elasticity. Reinforcement in slab. Design of joints. Design of Dowel bars. Design of Tie bars. IRC and AASHTO methods of Rigid Pavement design.

UNIT - III

Pavement Inventories, Quality Control and Evaluation: Serviceability Concepts; Visual Rating; Pavement Serviceability Index; Roughness Measurements; Distress Modes – Cracking Rutting Etc; Pavement Deflection – Different Methods and BBD, Skid Resistance, Roughness, Safety – Aspects; Inventory System. Causes of Deterioration, Traffic and Environmental Factors, Pavement Performance Modeling Approaches and Methods of Maintaining WBM, Bitumen and Cement Concrete Roads, Quality Assurance; Quality Control – ISO 9000, Sampling Techniques – Tolerances and Controls related to Profile and Compaction

R19 M.TECH TRANSPORTATION ENGG.

UNIT - IV

Construction of Base, Subbase, Shoulders and Drain: Roadway and Drain Excavation, Excavation and Blasting, Embankment Construction, Construction of Gravel Base, Cement Stabilised Sub- Bases, WBM Bases, Wet Mix Construction; Crushed Cement Bases, Shoulder Construction; Drainage Surface, Turfing Sand Drains; Sand Wicks; Rope Drains, Geo- Textile Drainage; Preloading Techniques

UNIT - V

Bituminous Construction and Maintenance: Preparation and Laying of Tack Coat; Bituminous Macadam, Penetration Macadam, built up Spray Grout, Open Graded Premix, Mix Seal, Semi-Dense Asphalt Concrete-Interface Treatments and Overlay Construction, IRC Specifications, Cement Concrete pavement Construction and Maintenance: Cement Concrete Pavement Analysis - Construction of Cement Roads, Manual and Mechanical Methods, Joints in Concrete and Reinforced Concrete Pavement and Overlay Construction.

REFERENCE BOOKS:

• 1. Principles of Pavement Design, Yoder.J. & Witzorac Mathew, W. John Wiley & Sons Inc.
• 2. Pavement Analysis & Design, Yang H. Huang, Prentice Hall Inc.
• 3. IRC: 37 & 58 Codes for Flexible and Rigid Pavements Design.
• 4. Sargious, M. A. – Pavements and surfacing for highways and airports – Applied Science Publishers ltd.
• 5. Bridge and Pavement maintenance- Transportation Research Record no.800, TRB.
• 6. Shahin M.Y, 1994- Pavement management for airports, roads and parking lots.
• 7. Bent Thagesan, 1996- Highway and Traffic engineering for developing countries.
• 8. MORTH - Specifications. R19 M.TECH TRANSPORTATION ENGG. M.TECH.- II YEAR- I SEMESTER TRANSPORTATION ENGINEERING