Question 1

What is high- strength concrete?

Accepted Answer

A concrete whose com

Question 2

Name the types of hydrated lime and the differences between them. Which one is more commonly used and why?

Accepted Answer

Hydrated lime is of two types: Type N an

Question 3

What is consolidation of concrete, why is it necessary, and how is it done?

Accepted Answer

Consolidation of concrete impl

Question 4

What are the size and shape of the test specimen used in determining the strength of concrete?

Accepted Answer

6- in. dia

Question 5

Explain where air- entrained concrete is required.

Accepted Answer

Air- entrainment in concrete increases i

Question 6

The aggregate for concrete is generally subdivided into coarse aggregate and fine aggregate. The distinction between the two types of aggregate is based on the

Accepted Answer

A) aggregate's surface texture. 
B) aggregate's particle size. 
C) aggregate's parent rock. 
D) aggregate's strength. 
E) aggregate's density. 
A) aggregate's surface texture. 
B) aggregate's particle size. 
C) aggregate's parent rock. 
D) aggregate's strength. 
E) aggregate's density.

Question 7

How does lime mortar (mixture of lime + sand + water)set, harden, and gain strength?

Accepted Answer

The lime in mortar reacts with

Question 8

When concrete test specimens are broken to determine the strength of concrete, which type of strength are we measuring-compressive strength, tensile strength, bending strength, or shear strength?

Accepted Answer

Compressiv

Question 9

Epoxy- coated bars are generally used in

Accepted Answer

A) high- rise buildings built in warm climates. 
B) parking garages built in cold climates. 
C) high- rise buildings built in cold climates. 
D) parking garages built in warm climates. 
E) none of the above. 
A) high- rise buildings built in warm climates. 
B) parking garages built in cold climates. 
C) high- rise buildings built in cold climates. 
D) parking garages built in warm climates. 
E) none of the above.

Question 10

Using sketches, explain how the compressive strength of concrete is determined.

Accepted Answer

To determine the compressive strength of

Question 11

What is the maximum size of coarse aggregate (CA)in concrete.

Accepted Answer

The maximum size of CA is a function of

Question 12

The consolidation of concrete on a construction site are generally done

Accepted Answer

A) manually using a 2- in.- diameter, 3- ft- long steel rod. 
B) using a power- driven rod vibrator. 
C) manually using a 1- in.- diameter, 3- ft- long steel rod. 
D) using a power- driven plate vibrator. 
A) manually using a 2- in.- diameter, 3- ft- long steel rod. 
B) using a power- driven rod vibrator. 
C) manually using a 1- in.- diameter, 3- ft- long steel rod. 
D) using a power- driven plate vibrator.

Question 13

What is water cement ratio (w- c ratio)and why is it important?

Accepted Answer

Water- cement ratio is the wei

Question 14

What is meant by "well- graded" aggregate?

Accepted Answer

A well- graded aggregate is one which co

Question 15

Lime is made by

Accepted Answer

A) mixing crushed limestone with nitric acid and then pulverizing the mixture. 
B) heating crushed limestone and then pulverizing it. 
C) mixing crushed limestone with water and then pulverizing the mixture. 
D) mixing crushed limestone with sulfuric acid and then pulverizing the mixture. 
A) mixing crushed limestone with nitric acid and then pulverizing the mixture. 
B) heating crushed limestone and then pulverizing it. 
C) mixing crushed limestone with water and then pulverizing the mixture. 
D) mixing crushed limestone with sulfuric acid and then pulverizing the mixture.

Question 16

What is air- entrained Portland cement? Where is it typically specified?

Accepted Answer

Air-entrained Portland cement is a type

Question 17

What does the acronym "WWR" stand for?

Accepted Answer

Welded wir

Question 18

A #8 reinforcing bar has a diameter of

Accepted Answer

A) 8 in. 
B) 1/8 in. 
C) 1 in. 
D) none of the above. 
A) 8 in. 
B) 1/8 in. 
C) 1 in. 
D) none of the above.

Question 19

One of the important cementitious ingredients in making Roman concrete was

Accepted Answer

A) clay. 
B) volcanic ash. 
C) Portland cement. 
D) sand. 
E) none of the above. 
A) clay. 
B) volcanic ash. 
C) Portland cement. 
D) sand. 
E) none of the above.

Question 20

Quicklime reacts readily with water.

Accepted Answer

A) True 
 B)False

Exam 21: Lime, Portland Cement, and Concrete

What is high- strength concrete?

Name the types of hydrated lime and the differences between them. Which one is more commonly used and why?

What is consolidation of concrete, why is it necessary, and how is it done?

What are the size and shape of the test specimen used in determining the strength of concrete?

Explain where air- entrained concrete is required.

The aggregate for concrete is generally subdivided into coarse aggregate and fine aggregate. The distinction between the two types of aggregate is based on the

How does lime mortar (mixture of lime + sand + water)set, harden, and gain strength?

When concrete test specimens are broken to determine the strength of concrete, which type of strength are we measuring-compressive strength, tensile strength, bending strength, or shear strength?

Epoxy- coated bars are generally used in

Using sketches, explain how the compressive strength of concrete is determined.

What is the maximum size of coarse aggregate (CA)in concrete.

The consolidation of concrete on a construction site are generally done

What is water cement ratio (w- c ratio)and why is it important?

What is meant by "well- graded" aggregate?

Lime is made by

What is air- entrained Portland cement? Where is it typically specified?

What does the acronym "WWR" stand for?

A #8 reinforcing bar has a diameter of

One of the important cementitious ingredients in making Roman concrete was

Quicklime reacts readily with water.

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