Construction Materials - Construction Materials and Management - Civil Engineering Previous Year Questions

1

2014 · Civil Engineering · Construction Materials and Management · Construction Materials

Civil Engineering (CE) 2014 [Session 2]

The modulus of elasticity, \(E = 5000\sqrt{f_{ck}}\) where \(f_{ck}\) is the characteristic compressive strength of concrete, specified in IS:456-2000 is based on

A

tangent modulus

B

initial tangent modulus

C

secant modulus

D

chord modulus

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2

2014 · Civil Engineering · Construction Materials and Management · Construction Materials

Civil Engineering (CE) 2014 [Session 2]

Group I contains representative stress-strain curves as shown in the figure, while Group II gives the list of materials. Match the stress-strain curves with the corresponding materials.
Group I:
P. Curve J
Q. Curve K
R. Curve L
Group II:
1. Cement paste
2. Coarse aggregate
3. Concrete

A

P - 1; Q - 3; R - 2

B

P - 2; Q - 3; R - 1

C

P - 3; Q - 1; R - 2

D

P - 3; Q - 2; R - 1

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3

2014 · Civil Engineering · Construction Materials and Management · Construction Materials

Civil Engineering (CE) 2014 [Session 2]

The target mean strength \(f_{cm}\) for concrete mix design obtained from the characteristic strength \(f_{ck}\) and standard deviation \(\sigma\), as defined in IS:456-2000, is

A

\(f_{ck} + 1.35\sigma\)

B

\(f_{ck} + 1.45\sigma\)

C

\(f_{ck} + 1.55\sigma\)

D

\(f_{ck} + 1.65\sigma\)

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4

2015 · Civil Engineering · Construction Materials and Management · Construction Materials

Civil Engineering (CE) 2015 [Session 2]

Match the information related to tests on aggregates given in Group-I with that in Group-II.

Group-I	Group-II
P. Resistance to impact	1. Hardness
Q. Resistance to wear	2. Strength
R. Resistance to weathering action	3. Toughness
S. Resistance to crushing	4. Soundness

A

P-1, Q-3, R-4, S-2

B

P-3, Q-1, R-4, S-2

C

P-4, Q-1, R-3, S-2

D

P-3, Q-4, R-2, S-1

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5

2016 · Civil Engineering · Construction Materials and Management · Construction Materials

Civil Engineering (CE) 2016 [Session 1]

Bull’s trench kiln is used in the manufacturing of

A

lime

B

cement

C

bricks

D

none of these

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6

2016 · Civil Engineering · Construction Materials and Management · Construction Materials

Civil Engineering (CE) 2016 [Session 1]

The compound which is largely responsible for initial setting and early strength gain of Ordinary Portland Cement is

A

C₃A

B

C₃S

C

C₂S

D

C₄AF

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7

2016 · Civil Engineering · Construction Materials and Management · Construction Materials

Civil Engineering (CE) 2016 [Session 2]

As per Indian standards for bricks, minimum acceptable compressive strength of any class of burnt clay bricks in dry state is

A

10.0 MPa

B

7.5 MPa

C

5.0 MPa

D

3.5 MPa

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8

2017 · Civil Engineering · Construction Materials and Management · Construction Materials

Civil Engineering (CE) 2017 [Session 2]

Let the characteristic strength be defined as that value, below which not more than 50% of the results are expected to fall. Assuming a standard deviation of 4 MPa, the target mean strength (in MPa) to be considered in the mix design of a M25 concrete would be

A

18.42

B

21.00

C

25.00

D

31.58

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9

2017 · Civil Engineering · Construction Materials and Management · Construction Materials

Civil Engineering (CE) 2017 [Session 2]

Group I gives a list of test methods and test apparatus for evaluating some of the properties of Ordinary Portland Cement (OPC) and concrete. Group II gives the list of these properties.

Group I	Group II
P. Le Chatelier test	1. Soundness of OPC
Q. Vee-Bee test	2. Consistency and setting time of OPC
R. Blaine air permeability test	3. Consistency or workability of concrete
S. The Vicat apparatus	4. Fineness of OPC

The correct match of the items in Group I with the items in Group II is

A

P-1, Q-3, R-4, S-2

B

P-2, Q-3, R-1, S-4

C

P-4, Q-2, R-4, S-1

D

P-1, Q-4, R-2, S-3

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10

2018 · Civil Engineering · Construction Materials and Management · Construction Materials

Civil Engineering (CE) 2018 [Session 2]

The setting time of cement is determined using

A

Le Chatelier apparatus

B

Briquette testing apparatus

C

Vicat apparatus

D

Casagrande’s apparatus

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11

2019 · Civil Engineering · Construction Materials and Management · Construction Materials

Civil Engineering (CE) 2019 [Session 2]

If the fineness modulus of a sample of fine aggregates is 4.3, the mean size of the particles in the sample is between

A

150 \(\mu m\) and 300 \(\mu m\)

B

300 \(\mu m\) and 600 \(\mu m\)

C

1.18 \(mm\) and 2.36 \(mm\)

D

2.36 \(mm\) and 4.75 \(mm\)

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12

2019 · Civil Engineering · Construction Materials and Management · Construction Materials

Civil Engineering (CE) 2019 [Session 2]

The characteristic compressive strength of concrete required in a project is 25 MPa and the standard deviation in the observed compressive strength expected at site is 4 MPa. The average compressive strength of cubes tested at different water-cement (w/c) ratios using the same material as is used for the project is given in the table.

w/c (%)	45	50	55	60
Average compressive strength of cubes (MPa)	35	25	20	15

The water-cement ratio (in percent, round off to the lower integer) to be used in the mix is _______

Check answer

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13

2019 · Civil Engineering · Construction Materials and Management · Construction Materials

Civil Engineering (CE) 2019 [Session 2]

In the context of provisions relating to durability of concrete, consider the following assertions: Assertion (1): As per IS 456-2000, air entrainment to the extent of 3% to 6% is required for concrete exposed to marine environment. Assertion (2): The equivalent alkali content (in terms of Na₂O equivalent) for a cement containing 1% and 0.6% of Na₂O and K₂O, respectively, is approximately 1.4% (rounded to 1 decimal place). Which one of the following statements is CORRECT?

A

Assertion (1) is FALSE and Assertion (2) is TRUE

B

Assertion (1) is TRUE and Assertion (2) is FALSE

C

Both Assertion (1) and Assertion (2) are FALSE

D

Both Assertion (1) and Assertion (2) are TRUE

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14

2020 · Civil Engineering · Construction Materials and Management · Construction Materials

Civil Engineering (CE) 2020 [Session 2]

As per IS 456:2000, the pH value of water for concrete mix shall NOT be less than

A

4.5

B

5.0

C

5.5

D

6.0

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15

2020 · Civil Engineering · Construction Materials and Management · Construction Materials

Civil Engineering (CE) 2020 [Session 2]

The maximum applied load on a cylindrical concrete specimen of diameter 150 mm and length 300 mm tested as per the split tensile strength test guidelines of IS 5816:1999 is 157 kN. The split tensile strength (in MPa, round off to one decimal place) of the specimen is __________.

Check answer

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16

2020 · Civil Engineering · Construction Materials and Management · Construction Materials

Civil Engineering (CE) 2020 [Session 2]

Group-I gives a list of test methods for evaluating properties of aggregates. Group-II gives the list of properties to be evaluated.

Group-I: Test methods	Group-II: Properties
P. Soundness test	1. Strength
Q. Crushing test	2. Resistance to weathering
R. Los Angeles abrasion test	3. Adhesion
S. Stripping value test	4. Hardness

The correct match of test methods under Group-I to properties under Group-II, is

A

P-4; Q-1; R-2; S-3

B

P-2; Q-1; R-4; S-3

C

P-3; Q-4; R-1; S-2

D

P-2; Q-4; R-3; S-1

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17

2022 · Civil Engineering · Construction Materials and Management · Construction Materials

Civil Engineering (CE) 2022 [Session 2]

Match all the possible combinations between Column X (Cement compounds) and Column Y (Cement properties):

Column X	Column Y
(i) C3S	(P) Early age strength
(ii) C2S	(Q) Later age strength
(iii) C3A	(R) Flash setting
	(S) Highest heat of hydration
	(T) Lowest heat of hydration

Which one of the following combinations is correct?

A

(i) - (P), (ii) - (Q) and (T), (iii) - (R) and (S)

B

(i) - (Q) and (T), (ii) - (P) and (S), (iii) - (R)

C

(i) - (P), (ii) - (Q) and (R), (iii) - (T)

D

(i) - (T), (ii) - (S), (iii) - (P) and (Q)

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18

2022 · Civil Engineering · Construction Materials and Management · Construction Materials

Civil Engineering (CE) 2022 [Session 2]

It is given that an aggregate mix has 260 grams of coarse aggregates and 240 grams of fine aggregates. The specific gravities of the coarse and fine aggregates are 2.6 and 2.4, respectively. The bulk specific gravity of the mix is 2.3.
The percentage air voids in the mix is __________. (round off to the nearest integer)

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19

2024 · Civil Engineering · Construction Materials and Management · Construction Materials

Civil Engineering (CE) 2024 [Session 1]

Concrete of characteristic strength 30 MPa is required. If 40 specimens of concrete cubes are to be tested, the minimum number of specimens having at least 30 MPa strength should be

A

35

B

37

C

38

D

39

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20

2024 · Civil Engineering · Construction Materials and Management · Construction Materials

Civil Engineering (CE) 2024 [Session 1]

Which one of the following statements related to bitumen is FALSE?

A

Kinematic viscosity is a measure of resistance to the flow of molten bitumen under gravity.

B

Softer grade bitumen possesses higher softening point than hard grade bitumen.

C

Flash point of bitumen is the lowest temperature at which application of a test flame causes vapours of the bitumen to catch an instant fire in the form of flash under specified test conditions.

D

Ductility test is carried out on bitumen to test its adhesive property and ability to stretch.

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