Elasticity and Shrinkage MCQs

Welcome to our comprehensive collection of Multiple Choice Questions (MCQs) on Elasticity and Shrinkage, a fundamental topic in the field of Concrete Technology. Whether you're preparing for competitive exams, honing your problem-solving skills, or simply looking to enhance your abilities in this field, our Elasticity and Shrinkage MCQs are designed to help you grasp the core concepts and excel in solving problems.

In this section, you'll find a wide range of Elasticity and Shrinkage mcq questions that explore various aspects of Elasticity and Shrinkage problems. Each MCQ is crafted to challenge your understanding of Elasticity and Shrinkage principles, enabling you to refine your problem-solving techniques. Whether you're a student aiming to ace Concrete Technology tests, a job seeker preparing for interviews, or someone simply interested in sharpening their skills, our Elasticity and Shrinkage MCQs are your pathway to success in mastering this essential Concrete Technology topic.

Note: Each of the following question comes with multiple answer choices. Select the most appropriate option and test your understanding of Elasticity and Shrinkage. You can click on an option to test your knowledge before viewing the solution for a MCQ. Happy learning!

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Elasticity and Shrinkage MCQs | Page 5 of 6

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Q41.
If the concrete is placed in 100% relative humidity for a length of time then there WON’T be any shrinkage.

a.

True

b.

False

c.

May be True or False

d.

Can't say

Discuss
Answer: (a).True
Q42.
The magnitude of autogenous shrinkage is ________

a.

.001

b.

.0001

c.

.01

d.

0.1

Discuss
Answer: (c)..01
Q43.
Which aggregates have high shrinkage?

a.

Grave

b.

Sand stone

c.

Quartz

d.

Granite

Discuss
Answer: (b).Sand stone
Q44.
Which aggregates have low shrinkage?

a.

Grave

b.

Sand stone

c.

Quartz

d.

Granite

Discuss
Answer: (c).Quartz
Q45.
What is plastic shrinkage?

a.

It is not a result of any change in the concrete production process. Rather, it is a result of certain environmental conditions which occurs in the Central Missouri area

b.

It is defined as the contracting of a hardened concrete mixture due to the loss of capillary water. This shrinkage causes an increase in tensile

c.

It is an important phenomenon in young concrete. At low w/c ratios, less than about 0.42, all the water is rapidly drawn into the hydration process and the demand for more water creates very fine capillaries

d.

It occurs when the concrete is exposed to air containing carbon dioxide

Discuss
Answer: (a).It is not a result of any change in the concrete production process. Rather, it is a result of certain environmental conditions which occurs in the Central Missouri area
Q46.
What is drying shrinkage?

a.

It is not a result of any change in the concrete production process. Rather, it is a result of certain environmental conditions which frequently occur in the Central Missouri area

b.

It is defined as the contracting of a hardened concrete mixture due to the loss of capillary water. This shrinkage causes an increase in tensile

c.

It is an important phenomenon in young concrete. At low w/c ratios, less than about 0.42, all the water is rapidly drawn into the hydration process and the demand for more water creates very fine capillaries

d.

It occurs when the concrete is exposed to air containing carbon dioxide

Discuss
Answer: (b).It is defined as the contracting of a hardened concrete mixture due to the loss of capillary water. This shrinkage causes an increase in tensile
Q47.
What is autogenous shrinkage?

a.

It is not a result of any change in the concrete production process. Rather, it is a result of certain environmental conditions which frequently occur in the Central Missouri area

b.

It is defined as the contracting of a hardened concrete mixture due to the loss of capillary water. This shrinkage causes an increase in tensile

c.

It is an important phenomenon in young concrete. At low w/c ratios, less than about 0.42, all the water is rapidly drawn into the hydration process and the demand for more water creates very fine capillaries

d.

It occurs when the concrete is exposed to air containing carbon dioxide

Discuss
Answer: (c).It is an important phenomenon in young concrete. At low w/c ratios, less than about 0.42, all the water is rapidly drawn into the hydration process and the demand for more water creates very fine capillaries
Q48.
What is carbonation shrinkage?

a.

It is not a result of any change in the concrete production process. Rather, it is a result of certain environmental conditions which frequently occur in the Central Missouri area

b.

It is defined as the contracting of a hardened concrete mixture due to the loss of capillary water. This shrinkage causes an increase in tensile

c.

It is an important phenomenon in young concrete. At low w/c ratios, less than about 0.42, all the water is rapidly drawn into the hydration process and the demand for more water creates very fine capillaries

d.

It occurs when the concrete is exposed to air containing carbon dioxide

Discuss
Answer: (d).It occurs when the concrete is exposed to air containing carbon dioxide
Q49.
ACI 305.R.91 specifies Evaporation rate __ kg/hr/m² should be avoided to prevent plastic cracking.

a.

<0.5

b.

=0.5

c.

>0.5

d.

Not equal to 0.5

Discuss
Answer: (c).>0.5
Q50.
Carbonic Acid + Ca(OH)₂ ⇨ X. What is the main compound in X?

a.

CaCO₂

b.

CO₂

c.

CaCO₃

d.

H₂O

Discuss
Answer: (c).CaCO₃
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