Pavement Design & Highway construction — Summer 2022

Explain the flexible pavement components and functions of its.

Write short note on: Stone Matrix Asphalt

Explain Marshall method for design of bituminous mix.

Explain the terms: WBM and WMM

Explain the desirable properties of road aggregates to be used in pavement construction.

What are the various tests carried out on bitumen? Explain any one of them.

Enlist different methods of road construction. Discuss their advantages and disadvantages.

Discuss desirable properties of Soil.

Write short note on: (a) Emulsion (b) Cut back

Explain ‘CBR’ Test in brief.

State advantages and disadvantages of earth roads.

Differentiate between Flexible and rigid pavement with neat sketch.

Explain different types of failures in flexible and rigid pavements.

Discuss the factors affecting the design of pavements.

Explain the following terms in flexible pavement construction: (a) Prime Coat (b) Tack coat (c) seal coat

Explain the procedure of design of rigid pavements as per IRC-58 guidelines.

Explain ESWL.

Discuss different software available for design of pavement.

Explain the procedure of design of flexible pavements as per IRC-37 guidelines.

Write short note on: Benkelman beam method

Explain the following: (a) Maintenance of Pavement (b) Dry Lean Concrete

What are the various types of joints in C.C. Pavements? Explain their functions with neat sketch.1

Explain IRC recommendations for design of dowel bars.

As C.C. Pavement has a thickness of 18 cm and has two lanes of 7.2 m with a longitudinal joint along the centre. Design the dimensions and spacing of the tie bar. Use of the following data: Allowable working stress in tension, Ss = 1400 kg/cm2; Unit weight of concrete, W = 2400 kg/ m3; Coefficient of friction = 1.5: Allowable bond stress in deformed bars = 24.6 kg/cm2.

Explain the terms: (a) Cold in place (b) Hot in place (c) Micro surfacing