Download AKTU B-Tech 5th Sem 2018-2019 RCE 052 Concrete Technology Question Paper

Download AKTU (Dr. A.P.J. Abdul Kalam Technical University (AKTU), formerly Uttar Pradesh Technical University (UPTU) B-Tech 5th Semester (Fifth Semester) 2018-2019 RCE 052 Concrete Technology Question Paper

Printed P8025102 Sub Code: RCE 052
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B. TECH
(SEM V) THEORY EXAMlNATION 2018-19
CONCRETE TECHNOLOGY
nine: 3 Hours Total Marks: 70
Non: Attempt all Sections. If require any missing data; then choose suitably.
SECTION A
l. Attempt all questions in brief. 2 x 7 = 14
What is bulking of sand?
What are the the rmal properties of aggregate?
De?ne Plastic concrete.
What is the impact of W/C ratio on Durability?
Write the concept of mix Design.
De?ne Standard Deviation.
What is the Rhelogical representation of Creep?
WWF?QF?FT'P?
SECTION B
2. Attempt any three of the following: _ ' 7 x 3 = 21
a. What are the tales of various tngredicnts of cement? What are the harmful
compounds likely to be present in cements?
b Describe the mechanism of a_ction of plastiuzers with neat sketch Mention any
three Super plasticizers
e. Design a concrete mix of M30 grade. Take standard devmtiqn of SMPa The
speci?c gmvities?of coarse aggregate and ?ne aggregate are 2. 75 and- '7 .62
respectively. The bulk density of coarse aggregate is 1610 kg/m3 and ?neness
modulus of aggregate is 2.70. A slump of 60 mm is necessary The water
absorption of coarse aggregate is 1% and free moisture in ?ne aggregate is 2%
.Design the concrete mix using IS code method. Assume any missing data,
d. What is the relation betwccn creep and time? What is the effect of creep on
concrete?
e. Explain the following
i. Light weight aggregate concrete '
ii. SIFCON
iii, Types of polymer concrete
:SEChON C
3. Attempt any one part of thefollowing: 7 x l = 7
(a) What are the sources of Aggregate? And also classify the particles on the basis
of aggregate in tabular form.
(b) How is water used in making concrete and what is its role in the foundation and
properties ofconcrete?
4. Attempt any one part of the following: 7 x I = 7
(51) Describe gas forming agents? Give an example of a material in powder form
used as a gas forming agent.
(b) Write a note on workability agents. Give examples.

5.
Attempt any one part of the following: 7 x l = 7
(3) Explain how you would determine the various elastic moduli for concrete.
(b) What do you understand by carbonation of concrete? How is it tested?
Attempt any one part of the following: 7 x 1 = 7
(8) Write a brief note on Flexurc strength of Concrete.
(b) Discuss the in?uence of mix proportions of concretc on shrinkage?
Attempt any one part of the following: 7 x 1 = 7
(a) What is the need to study ?ber reinforced concrete and explain brie?y the
factors effecting properties of ?ber reinforced concrete?
(b) Difference between High performance concrete and high density concrete.