Civil Engineering Materials – BE (PU) Question Paper 2010 | Semester : Spring

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Civil EngineeringPokhara University | Old Question Paper
Bachelor of Engineering (BE)
Civil Engineering Materials – Level: Bachelor
Year: 2010 | Semester : Spring

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Question Paper is Given Below:

Full Marks: 100 | Pass Marks: 45 | Time: 3 Hrs
Candidates are required to give their answers in their own words as far as practicable. The figures in the margin indicate full marks.

Attempt all the questions.

1. a) “Knowledge of Civil Engineering Material is always beneficial in civil engineering construction for civil engineers.” Use specific reasons and example to support the above statement. [5]
b) Draw the typical stress-strain diagram for mild steel showing all the salient features. [5]
c) What do you know about brittle fracture of metals? [5]

2. a) Explain the methods adopted to control the corrosion of metals. [7]
b) Alloys are used as structural material. Justify with reasons. [4]
c) A mild steel bar of diameter 16mm and length 200mm is applied to both ends with a force of 100KN in tensile test machine. Determine the change in diameter of the bar if modulus of elasticity of mild steel is 2 × 105 N/mm2 and poison’s ratio is 0.3 [4]

3. a) What are the characteristics of good timber? [8]
b) How mild steel is different from wrought iron? Explain operation involved in manufacture of wrought iron from pig iron? [7]

4. a) What are the reactions of hydration of the main compounds in the Portland cement? [7]
b) List out and descinge the different types of defects in timber with suitable figures. [8]

5. a) Describe workability of fresh concrete? Explain one of the methods for measuring workability of cement concrete. [7]
b) Describe the process of manufacturing clay tiles. What are the different types of tiles used in building? [8]

6. a) Explain about ACI concrete mix design method. [7]
b) What are the importance of admixture. Plastic is used in building construction. Justify with reasons. [8]

7. Write short notes on any two: [2 X 5]

a) Bulking of sand
b) Properties of tiles
c) Polymer concrete

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