Download GTU BE/B.Tech 2018 Winter 8th Sem New 2180607 Repairs And Rehabilitation Of Concrete Structures Question Paper

Download GTU (Gujarat Technological University) BE/BTech (Bachelor of Engineering / Bachelor of Technology) 2018 Winter 8th Sem New 2180607 Repairs And Rehabilitation Of Concrete Structures Previous Question Paper

1
Seat No.: ________ Enrolment No.___________

GUJARAT TECHNOLOGICAL UNIVERSITY

BE - SEMESTER ?VIII (NEW) EXAMINATION ? WINTER 2018
Subject Code: 2180607 Date: 19/11/2018

Subject Name: Repairs & Rehabilitation Of Concrete Structures

Time: 02:30 PM TO 05:00 PM Total Marks: 70

Instructions:

1. Attempt all questions.

2. Make suitable assumptions wherever necessary.

3. Figures to the right indicate full marks.

Q.1 (a) Give various construction errors leads to the cracking and detoriation of concrete. 03
(b) Discuss Epoxy as a repair material 04
(c) How corrosion occurs in RCC Structures. Discuss various corrosion mitigation
techniques?
07

Q.2 (a)
How we can improve durability of concrete in sea water?
03
(b) How corrosion of reinforcement prevent in RCC? 04
(c) Explain carbonation in concrete.? How it is determined in concrete. What are the
limitation associated with it.
07
OR
(c) What are the causes of distress in concrete. 07

Q.3 (a) How repairing of small crack carried out structures? 03
(b) Explain methodology to repair earthquake deficient structure. 04
(c) Explain rebound hammer test with neat sketch. 07
OR
Q.3 (a) Which are the parameters required for selection of repair material. 03
(b) Write short note on fiber wrap technique. 04
(c) Enlist factors affecting on permeability. Explain in details. 07

Q.4 (a) How to carry out repairs of leakage from terrace?. 03
(b) Explain crack due to overloading with sketch. 04
(c) What do u mean by jacating ? Explain column jacating with neat sketch. 07
OR
Q.4 (a) Distinguish between Rea=habilitation and Retrofitting. 03
(b) EWhat are the facors affecting on pulse velocity measurement. 04
(c) Write short note on vacuum concrete and ferorcement 07

Q.5 (a) What is durability ? Enlist factors affecting on durability 03
(b) Write short note on temperature effect on concrete. 04
(c) Explain alkali silica reaction in details. 07
OR

Q.5 (a) Give advantage of utilize Portland slag cement. Where it used? 03
(b) Write short note in visual inspection to asses fire damaged structures. 04
(c) Write short note on effect freezing and thawing. 07

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