Exam Details
| Subject | Concrete Technology | |
| Paper | ||
| Exam / Course | Diploma in Civil Engineering (DCLE) | |
| Department | School of Engineering & Technology (SOET) | |
| Organization | indira gandhi national open university | |
| Position | ||
| Exam Date | December, 2016 | |
| City, State | new delhi, |
Question Paper
No. ofPrinted Pages ... . IBCE..044I
DIPLOMA IN cML ENGINEERING DCLE(G) JDCLEVl Tel'm-End ExaMination 00847 December, 2016
BCE-044 CONCRETE TeCHNOLOGY
7lme: 2 hours Maximum Marks: 10
Note: Answer fiVe. q.uestions in etll. iW. 1 ts compulsory.
1. Answer any two of the following in brief: 2X2=4
Explain the factors affecting creep of concrete.
Define concrete and state the ingredients of concrete.
Enlist the properties of concrete in plastic stage.
Fill in the blanks (any four).
The property of the ingredients to separate from each other while placing the concrete is called as
The property of fresh concrete, in which the water in the mix tends to rise to the surface while placing the compacting is called as
Minimum water- cement ratio required for full hydration of cement is
Curing period required is minimum for the concrete Using
The strength of concrete after one year as compared to 28 days strength is about
Select the correct option (any four). 4x1=4
Air entrainment in the concrete increases [workability/strength/unit weight].
Admixtures which cause early setting, and hardening of concrete are called [workability/accelerators/retardersl.
Poisson's ratio for concrete [increases/decreases/does not change] with richer mixes.
The factor of safety for steel is [same/lower/higher] than that for concrete.
Increase in fineness modulus of aggregate indicates [finer/coarser/gap] grading.
2. Draw the process diagram of concrete and explain different operations of concreting. 7
Explain different chemical ingredients of cement and their functions. 7
3. Explain any one of the following with the help of a neat sketch 7
Setting time test of cement
Soundness of cement
Explain any One Of the following with the help of a neat sketch 7
Slump test .
Vee-Bee consistometer test
4. Explain the importance of quality of water used for manufacturing the concrete. List the various types of important impurities, likely to be present in water.
Describe the various methods of storing cement. Differentiate between the weigh batching. and volume batching of aggregate.
5. Discuss the methods of transportation of concrete. What are the measures to be taken during transportation of concrete?
Explain different methods of curing. What are water curing and membrane curing
6. Write short notes on any four of the following:
Screeding
Expansion and Contraction Joints
Light-weight Concrete
Advantage of Pre-cast Concrete
Ultra-tight-weight Concrete .
DIPLOMA IN cML ENGINEERING DCLE(G) JDCLEVl Tel'm-End ExaMination 00847 December, 2016
BCE-044 CONCRETE TeCHNOLOGY
7lme: 2 hours Maximum Marks: 10
Note: Answer fiVe. q.uestions in etll. iW. 1 ts compulsory.
1. Answer any two of the following in brief: 2X2=4
Explain the factors affecting creep of concrete.
Define concrete and state the ingredients of concrete.
Enlist the properties of concrete in plastic stage.
Fill in the blanks (any four).
The property of the ingredients to separate from each other while placing the concrete is called as
The property of fresh concrete, in which the water in the mix tends to rise to the surface while placing the compacting is called as
Minimum water- cement ratio required for full hydration of cement is
Curing period required is minimum for the concrete Using
The strength of concrete after one year as compared to 28 days strength is about
Select the correct option (any four). 4x1=4
Air entrainment in the concrete increases [workability/strength/unit weight].
Admixtures which cause early setting, and hardening of concrete are called [workability/accelerators/retardersl.
Poisson's ratio for concrete [increases/decreases/does not change] with richer mixes.
The factor of safety for steel is [same/lower/higher] than that for concrete.
Increase in fineness modulus of aggregate indicates [finer/coarser/gap] grading.
2. Draw the process diagram of concrete and explain different operations of concreting. 7
Explain different chemical ingredients of cement and their functions. 7
3. Explain any one of the following with the help of a neat sketch 7
Setting time test of cement
Soundness of cement
Explain any One Of the following with the help of a neat sketch 7
Slump test .
Vee-Bee consistometer test
4. Explain the importance of quality of water used for manufacturing the concrete. List the various types of important impurities, likely to be present in water.
Describe the various methods of storing cement. Differentiate between the weigh batching. and volume batching of aggregate.
5. Discuss the methods of transportation of concrete. What are the measures to be taken during transportation of concrete?
Explain different methods of curing. What are water curing and membrane curing
6. Write short notes on any four of the following:
Screeding
Expansion and Contraction Joints
Light-weight Concrete
Advantage of Pre-cast Concrete
Ultra-tight-weight Concrete .
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Subjects
- Advanced Survey
- Applied Mechanics
- Chemistry
- Computer Basics
- Concrete Technology
- Construction Drawing
- Construction Technology- I
- Construction Technology- II
- E/M Engineering
- Electrical Technology
- Electronics
- Elementary Civil Engineering
- Elements of Survey
- Engineering Drawing
- Engineering Materials
- Environmental Engineering
- Estimating & Quantity Surveying- I
- Estimating & Quantity Surveying- II
- Fluid Mechanics
- Heat Power Technology
- Industrial Management
- Machine Drawing
- Mathematics-I
- Mathematics-II
- Physics
- Refrigeration & Air-Conditioning
- Strength of Materials
- Theory of Structures- I
- Theory of Structures- II
- Workshop Technology