Model Question Papers with Answers - 2

Model Question Paper - 2

B.E./B.Tech DEGREE EXAMINATION.,

CE3302-CONSTRUCTION MATERIALS AND TECHNOLOGY

 

Answer ALL Questions

 

1. Define the term Efflorescence.

Efflorescence is defined as the presence of grey or white layer on brick surface by absorbing moisture. It is formed due to the presence of alkalies in bricks. In the efflorescence test, if the presence of alkalies is over 50% then the brick is severely affected by alkalies. Hence more deposits will be visible over the brick surface.

2. What is a lime mortar?

Lime mortar is formed by mixing of lime, sand, and water. The required amount of lime and sand is placed on the ground or tray. The lime and sand are mixed evenly by turning the spades up and down. The water is added till the uniform color and consistency of the mortar area unit is obtained and also the mixture is persistent with spades.

3. How will you define the term water seasoning?

Removal of wood sap by immersing logs into water flow is called water seasoning. It is carried out on the river banks while thicker ends are kept towards upstream. After that, the logs are allowed to dry. This process is time consuming such as 2 to 4 weeks generally.

4. Define FRP

Fiber-reinforced plastic (FRP) composites have transformed the manufacturing sector. FRP composites offer high-end performance at a fraction of the weight and cost of comparable metal materials. Construction, energy,aerospace, and other critical sectors are realizing the benefits of FRP for producing reliable parts and components.

5. What is brick masonry?

Brick masonry is built with bricks bonded together with mortar. It is a structural technique in which the bricks are laid out in a systematic pattern and the joints are filled with mortar to make a solid structure. Brick masonry strength depends on the type of bond and materials used for construction. They ho play an important role in providing strength, stability, and durability to the brick masorry.

6. Write about Shoring.

Shoring is a temporary structure used to prevent the collapse of the main under-construction structure. The most commonly shoring support is required during the early stage of construction which is excavation. It is a momentary support, which is used during the repair or original construction of buildings and in excavations.

7. Name some of the equipments used for earthwork excavation."

The equipments used for earthwork excavation are:

❖ Excavators

❖ Loaders

❖ Scrappers

❖ Graders

❖ Dozers

❖ Trenchers

8. Briefly write about concrete batching plant.

Concrete batching plant, mixes various materials to form concrete. These materials include sand, aggregate, slag, cement, fly ash, and water among others. The batching plant comprises of adequate capacity gravel & sand hoppers, weighing conveyor suspended on electronic load cells, reversible drum type mixer unit, cement bin with screw conveyor, rubber belt type charging conveyor, cement batcher, PLC based control panel.

9. Define Construction planning.

Construction planning is a primary and demanding activity in the construction management and execution of construction projects. It involves the selection of technology, the definition of work tasks, the estimation of the required resources and durations for individual tasks, and the identification of any relations among the different work tasks.

10. What is a critical activity?

The activities with zero total float are known as critical activities. In other words an activity is said to be critical if a delay in its start will cause a further delay in the completion date of the entire project.

 

 

PART-B (5 x 13 = 65 Marks)

11. (a) What are the different tests conducted on stones? Explain any two tests.

Ans. Refer Section No: 1.5,

Page No. 1.9

[OR]

(b) Explain in detail about manufacturing process of conventional bricks.

Ans. Refer Section No: 1.9,

12. (a) Discuss in detail about the defects in timber.

Page No. 1.17

Ans. Refer Section No: 2.1.16,

Page No. 2.11

[OR]

(b) Explain in detail about various market forms of aluminium.

Ans. Refer Section No: 2.6.3,

Page No. 2.32

13. (a) Explain the different types of roof with neat sketches.

Ans. Refer Section No: 3.13.2,

Page No. 3.47

ao [OR]

(b) Elaborate in detail joints in concrete.

Ans. Refer Section No: 3.15,

Page No. 3.58

14. (a) Enumerate in detail about different types of loaders.

Ans. Refer Section No: 4.2,

Page No. 4.8

[OR]

(b) With neat sketches explain the different types of cranes.

Ans. Refer Section No: 4.4,

Page No. 4.28

15. (a) Explain the various types and stages in construction planning.

Ans. Refer Section No: 5.1.6, 5.1.7

Page No. 5.5 & 5.6

[OR]

(b) Discuss in detail about PERT in network analysis.

Ans. Refer Section No: 5.3.6,

Page No. 5.36

 

PART-C (1 x 15 = 15 Marks)

16. (a) Discuss different types of concreting equipments with neat sketches

Ans. Refer Section No: 4.4,

Page No. 4.28

[OR]

(b) A project has the following times schedule

Construct the network and compute:

(i) T_E and T_L for each event

(ii) Float for each activity

(iii) Critical path and its duration

Ans. Refer Example No.3,

Page No. 5.32