Question 1

Clay was the first material to be used for mortar.

Accepted Answer

A) True 
 B)False

Question 2

Mortar performance is greatly influenced by the choice and amount of cement materials in the mix.

Accepted Answer

A) True 
 B)False

Question 3

ASTM C150 covers _____ types of portland cement, but only _____ are recommended for use in masonry mortars.

Accepted Answer

A)   four; two
B)   five; four
C)   seven; five
D)   eight; three

Question 4

Lime-based mortar is high in _____, which means that the mortar resists drying effects when combined with the masonry Chapters to build a wall.

Accepted Answer

A)   water retentivity
B)   bond strength
C)   workability
D)   tensile strength

Question 5

_____ portland cement is used in masonry when moderate sulfate resistance or moderate heat of hydration is desired.

Accepted Answer

A)   Type A
B)   Type B
C)   Type I
D)   Type II

Question 6

Although not as strong as previous cements, portland cement is less expensive and therefore more widely used.

Accepted Answer

A) True 
 B)False  False

Question 7

Portland cement is a _____ cement, which means that it sets and hardens by a chemical reaction with water.

Accepted Answer

A)   hydraulic
B)   natural
C)   hydrated
D)   lime-sand

Question 8

Good quality sand is available in only one type: manufactured.

Accepted Answer

A) True 
 B)False  False

Question 9

_____ is formed by calcining pieces of limestone under controlled heat.

Accepted Answer

A)   Slaked lime
B)   Quicklime
C)   Hydrated lime
D)   Hydraulic lime

Question 10

A _____ will usually be classified as Type M, Type S, or Type N.

Accepted Answer

A)   blended hydraulic cement
B)   mortar cement
C)   masonry cement
D)   portland cement

Question 11

Which of the following statements is true regarding water used in mortar?

Accepted Answer

A)   It should be high in alkalis but low in salts.
B)   It should be high in both salts and acids.
C)   Purifying chemicals in city water supplies have an adverse effect on mortar.
D)   Water fit to drink is acceptable for use in mortar.

Question 12

The ability of mortar to reknit or reseal itself if hairline cracks occur is called _____ .

Accepted Answer

A)   flexibility
B)   autogenous healing
C)   compressive strength
D)   adhesion

Question 13

The production of portland cement involves only one simple process.

Accepted Answer

A) True 
 B)False

Question 14

ASTM C1329 applies to ______, a hydraulic cement similar with the added requirement of meeting a minimum bond strength.

Accepted Answer

A)   blended hydraulic cement
B)   mortar cement
C)   masonry cement
D)   portland cement

Question 15

Which of the following statements is true about sand?

Accepted Answer

A)   Manufactured sand is smoother than natural sand.
B)   Natural sand has a sharp, angular grain shape.
C)   Natural sand is rounder than manufactured sand.
D)   Manufactured sand is very high in salt content. C

Exam 12: The Development of Mortar

Clay was the first material to be used for mortar.

Correct Answer
verified

Mortar performance is greatly influenced by the choice and amount of cement materials in the mix.

Correct Answer
verified

ASTM C150 covers _ types of portland cement, but only _ are recommended for use in masonry mortars.

Correct Answer
verified

Lime-based mortar is high in _____, which means that the mortar resists drying effects when combined with the masonry Chapters to build a wall.

Correct Answer
verified

_____ portland cement is used in masonry when moderate sulfate resistance or moderate heat of hydration is desired.

Correct Answer
verified

Although not as strong as previous cements, portland cement is less expensive and therefore more widely used.

Correct Answer
verified
False

Portland cement is a _____ cement, which means that it sets and hardens by a chemical reaction with water.

Correct Answer
verified

Good quality sand is available in only one type: manufactured.

Correct Answer
verified
False

_____ is formed by calcining pieces of limestone under controlled heat.

Correct Answer
verified

A _____ will usually be classified as Type M, Type S, or Type N.

Correct Answer
verified

Which of the following statements is true regarding water used in mortar?

Correct Answer
verified

The ability of mortar to reknit or reseal itself if hairline cracks occur is called _____ .

Correct Answer
verified

The production of portland cement involves only one simple process.

Correct Answer
verified

ASTM C1329 applies to ______, a hydraulic cement similar with the added requirement of meeting a minimum bond strength.

Correct Answer
verified

Which of the following statements is true about sand?

Correct Answer
verified
C

Exam 12: The Development of Mortar

Clay was the first material to be used for mortar.

Correct AnswerverifiedShow Answer

Mortar performance is greatly influenced by the choice and amount of cement materials in the mix.

Correct AnswerverifiedShow Answer

ASTM C150 covers _____ types of portland cement, but only _____ are recommended for use in masonry mortars.

Correct AnswerverifiedShow Answer

Lime-based mortar is high in _____, which means that the mortar resists drying effects when combined with the masonry Chapters to build a wall.

Correct AnswerverifiedShow Answer

_____ portland cement is used in masonry when moderate sulfate resistance or moderate heat of hydration is desired.

Correct AnswerverifiedShow Answer

Although not as strong as previous cements, portland cement is less expensive and therefore more widely used.

Correct AnswerverifiedFalse

Portland cement is a _____ cement, which means that it sets and hardens by a chemical reaction with water.

Correct AnswerverifiedShow Answer

Good quality sand is available in only one type: manufactured.

Correct AnswerverifiedFalse

_____ is formed by calcining pieces of limestone under controlled heat.

Correct AnswerverifiedShow Answer

A _____ will usually be classified as Type M, Type S, or Type N.

Correct AnswerverifiedShow Answer

Which of the following statements is true regarding water used in mortar?

Correct AnswerverifiedShow Answer

The ability of mortar to reknit or reseal itself if hairline cracks occur is called _____ .

Correct AnswerverifiedShow Answer

The production of portland cement involves only one simple process.

Correct AnswerverifiedShow Answer

ASTM C1329 applies to ______, a hydraulic cement similar with the added requirement of meeting a minimum bond strength.

Correct AnswerverifiedShow Answer

Which of the following statements is true about sand?

Correct AnswerverifiedC

Correct Answer
verified

Correct Answer
verified

ASTM C150 covers _ types of portland cement, but only _ are recommended for use in masonry mortars.

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified
False

Correct Answer
verified

Correct Answer
verified
False

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified
C