Q.1
14 Marks(a)
What is the effect of water cement ratio on strength of concrete?
(b)
What is gap grading? Explain briefly.
(c)
Explain Indian Standard Mix design method as per IS:10262 with its salient features
Gujarat Technological UniversitySummer 2023 examination
GTU 3150610 Concrete Technology Summer 2023 Question Paper & PDF
B.E. · Civil Engineering · Semester 5 · Subject code 3150610
- Total
- 70 marks
- To pass
- 23 marks (33%)
- Duration
- 2.5 Hours 2:30 PM – 5:00 PM
- Questions
- 5 with internal choice
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Q.2
14 Marks(a)
Enlist different types of Cement.
(b)
Write down Bouge’s compounds of cement. Explain their role in the hydration process.
(c)
State the advantages of concrete as a construction material.
OR
(c)
Explain wet process for manufacturing of cement.
Q.3
14 Marks(a)
Briefly explain Gel-space ratio.
(b)
What is workability of fresh concrete. Enlist factors affecting workability.
(c)
Write importance of curing of concrete. Explain different methods of curing procedure.
OR
(a)
Explain different types of slump with
(b)
Define:
1Standard Consistency 2. Initial Setting Time
3Final Setting Time 4. Soundness of Cement.
(c)
What is permeability of concrete? Enlist factors affecting the permeability of concrete. Explain any three of them in detail.
Q.4
14 Marks(a)
What is compaction of concrete? What is the significance of compaction in concrete?
(b)
Enlist the different admixtures used in concrete construction. Explain the function of accelerator and retarders types of admixtures.
(c)
State factors affecting compressive strength of concrete and explain any one in detail.
OR
(a)
Define Ferro cement briefly.
(b)
Explain Bleeding in detail.
(c)
Explain the test for the determination of aggregate crushing value.
Q.5
14 Marks(a)
Distinguish between the grade of cement and grade of concrete.
(b)
State the different types of special concrete techniques. Explain the ready mixed concrete with its classification.
(c)
Enlist the types of NDT tests for concrete. Explain the rebound hammer test in detail.
OR
(a)
State the essential characteristics of water that can be used for mixing and curing of concrete.
(b)
How fly ash concrete gain strength in later age?
(c)
Explain the basic principle on which schmidt rebound hammer works. What are its limitations?
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About this paper
Official Gujarat Technological University (GTU) examination paper for Concrete Technology (Summer 2023, B.E. · Civil Engineering, Sem 5). Features complete 70-mark regular & remedial examination pattern, official marking distribution across all 5 questions, and direct 1-click official PDF download.
Transcribed for student exam preparation from Gujarat Technological University official examination archives. Questions, syllabus guidelines, and curriculum marking schemes remain the intellectual property of Gujarat Technological University.