College : Vardhaman College Of Engineering
Degree : B.Tech
Department :Civil Engineering
Semester : III
Subject : Concrete Technology
Document type : Question Paper
Website : vardhaman.org
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Vardhaman Concrete Technology Question Paper
B. Tech III Semester Regular Examinations,
(Civil Engineering)
Date : 4 December, 2013
Time : 3 Hours
Max. Marks : 75
Related : Vardhaman College Of Engineering Thermodynamics B.Tech Question Paper : www.pdfquestion.in/6310.html
December – 2013
Answer ONE question from each Unit
All Questions Carry Equal Marks
All parts of the question must be answered in one place only
Unit – 1 :
1. a) What are the end products of hydration? Explain. 8M
b) What is the importance of sieve analysis in concrete Technology? 7M
2. List various field and laboratory tests conducted on cement? Explain any two from each. 15M
Unit – 2 :
3. a) What are the various factors affecting the workability of concrete? Explain. 8M
b) Explain the influence of bleeding and segregation on fresh concrete. 7M
4. a) Explain the different stages of manufacture of concrete. 8M
b) What is the relation between compressive and tensile strength of concrete? 7M
Unit – 3 :
5. a) What are the factors affecting the strength of concrete? 7M
b) How do you determine the flexural strength of concrete? What is its significance? 8M
6. a) With a neat graph, explain different modulii of elasticity of concrete. 7M
b) Explain the deformations of concrete which are independent of the load. 8M
Unit – 4 :
7. a) What are the various factors affecting the mix proportion? 7M
b) Explain the procedure of BIS method of mix design. 8M
8. Calculate the quantities of all the ingredients of M20 concrete using latest IS code method for the following details:
Cement – 43 Grade,
Specific gravity-3.15,
Fine aggregate – Zone I,
Specific gravity of 2.6,
water absorption is 2%,
free moisture is 3%.
Coarse aggregate – Crushed angular, 20mm down, Specific gravity is 2.67.
Chemical Admixture: Specific gravity is 1.145, Optimum dosage is 1%, water reduction is 20%.
Type of placement is Pumpable.
Exposure condition: Mild for RCC.
Slump requirement is 100mm. Assume the missing data if any and specify clearly. 15M
Unit – 5 :
9. a) Explain the different types of fibres used for FRC 6M
b) Write short notes on HVFAC, SCC and light weight concrete 9M
10. a) Explain High density concrete and high performance concrete. 6M
b) What is polymer concrete? What are the various polymer materials used for concrete? 9M
June – 2014
Four Year B. Tech III Semester Supplementary Examinations
Regulations: VCE-R11
Concrete Technology :
(Civil Engineering)
Date: 11 June, 2014 FN
Time: 3 hours
Max Marks: 75
Answer ONE question from each Unit
All Questions Carry Equal Marks
All parts of the question must be answered in one place only
Unit – I :
1. a) What are the chemical reactions that take place when water is added to cement? How do these reactions affect the strength of the concrete? 7M
b) What is fineness modulus? Explain the method of determining fineness modulus along with its significance in making good concrete? 8M
2. a) Explain Transition Zone, heat of hydration and water requirement of concrete? 9M
b) What are the different tests conducted on wet cement? Explain any one of them? 6M
Unit – II :
3. a) What is workability? What is the effect of time and temperature on workability? 7M
b) Explain segregation, bleeding, gel space ratio and water cement ratio? 8M
4. a) Explain any two tests conducted to find the workability of fresh concrete. 8M
b) Why is curing required for concrete? What are the different ways of curing concrete? 7M
Unit – III :
5. a) Explain the procedure to conduct the split tensile strength of concrete? 8M
b) What are the applications of non-destructive testing of concrete? 7M
6. a) Why compressive strength is regarded as very significant in concrete? 8M
b) What are the factors affecting the strength of concrete? 7M
Unit – IV :
7. a) What are the factors influencing the choice of mix proportions? Explain. 8M
b) What are the different methods available to proportion the concrete mix? Explain merits and demerits of each. 7M
8. a) Design a concrete mix with following data M20 mix
43 grade OPC cement
7 days strength=33N/mm2
Workability-low
Size of aggregate-20 mm
Specific gravity for course aggregate-2.8
Specific gravity for fine aggregate-2.7 15M
Unit – V :
9. a) What are the properties of light weight concrete? 7M
b) What are the applications of fibre reinforced concrete? 8M
10. a) What are the tests conducted on self consolidating concrete? 7M
b) Where do you recommend high density concrete and why? 8M