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Seat No.: Enrolment
GUJARAT TECHNOLOGICAL UNIVERSITY
PDDC- SEMESTER-IV EXAMINATION SUMMER 2017
Subject Code: X40602 Date:29/05/2017
Subject Name: Concrete Technology
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

Enlist different types of cement. Write uses of any three types of cement.
07

Define workability. Describe compacting factor test to measure workability of fresh concrete.
07
Q.2

Why curing of concrete is necessary? Enlist various methods of curing. Explain any one method of curing.
07

Explain effect of size, shape and texture of aggregate on concrete.
07
OR

Which are the various factors affecting strength of concrete? How does water-cement ratio affect strength of concrete?
07
Q.3

Explain procedure to measure Initial Setting Time and Final Setting Time of cement.
07

Enlist various methods of transporting concrete. Explain any two methods of transporting concrete.
07
OR
Q.3

Explain various factors promoting the Alkali-Aggregate Reaction.
07

Enlist various types of chemical admixtures and write their functions.
07
Q.4

Write data required and steps involved in concrete mix design using IS method.
07

Explain carbonation of concrete? Write procedure to measure depth of carbonation in concrete structure.
07
OR
Q.4

Enlist various non-destructive tests of concrete. Explain Ultrasonic Pulse Velocity test of concrete.
07

What do you understand by 'damage assessment'? Enlist various objectives and stages of damage assessment.
07
Q.5

Write short-note (Any three)
14
Bulking of aggregate Shotcrete Under water concrete Shrinkage.
OR
Q.5

Write short-note (Any three)
14
Segregation Sulphate attack Light weight concrete Fiber reinforced concrete.