Download GTU BE/B.Tech 2019 Summer 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) 2019 Summer 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 ? SUMMER 2019
Subject Code:2180607 Date:13/05/2019

Subject Name:Repairs & Rehabilitation Of Concrete Structures

Time:10:30 AM TO 01:00 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) Define the terms Thermal Conductivity, Thermal Diffusivity and Coefficient of
Thermal Expansion with reference to concrete.
03
(b) Explain the process of durable concrete repair. 04
(c) Explain deterioration of concrete due to Weathering and Sulphate attack in detail. 07

Q.2 (a) Enlist the essential parameters for good repair material. 03
(b) Write short note on Plate Bonding technique. 04
(c) List various test used for assessment of concrete. Explain Pull-Out test method
for assessment of concrete.
07
OR
(c) Explain structural health monitoring for bridges. 07
Q.3 (a) Define carbonation. State and explain the factor affecting rate of carbonation.
Also explain how carbonation deteriorates concrete.
07
(b) State the objectives of condition survey. Explain various stages of condition
survey in detail.
07
OR
Q.3 (a) Define (i) Repair (ii) Rehabilitation (iii) Retrofitting. 03
(b) Discuss Epoxy as a repair material. 04
(c) Differentiate between porosity and permeability of concrete. Explain in brief factors
affecting permeability of concrete.
07
Q.4 (a) Explain differential thermal analysis technique for fire damage assessment. 03
(b) Explain the process of Alkali aggregate Reaction. Enlist the factors promoting
Alkali aggregate Reaction.
04
(c) Explain the mechanism of corrosion of steel embedded in concrete. Enlist the
methods to control corrosion of steel reinforcement in RCC. Explain any one
method.
07

OR
Q.4 (a) Enlist different crack repair techniques. Explain any three in detail. 07
(b)
Define the term jacketing. Discuss strengthening of beams by jacketing technique.
07
Q.5 (a) Enlist various causes of damage in Masonry buildings. 03
(b) Write short note on Ferro Cement. 04
(c) Discuss Underpinning for foundation rehabilitation in detail. 07
OR

Q.5 (a) Define the term ?Building Maintenance?. Enlist various activities to be performed
for maintenance of building.
03
(b) Discuss Temperature effect on concrete. 04
(c) Discuss various types of maintenance. Also explain importance of building
maintenance.
07

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