Chapter 07 - Concrete Plant Supervisor and b b b b b b
Operations Questions with CorrectAnswers 2025 b b b b b
What chemical reaction occurs when water and cement are combined?
b b b b b b b b b
A. Emulsification
B. Hydration
C. Solidification
D. Hydraulicfusion - CORRECT ANSWER -Hydration
b b b b b
What process mustbe minimized when stockpiling aggregates?
b b b b b b b
A. Segregation
B. Separation
C. Solidification
D. Disintegration - CORRECT ANSWER -Segregation b b b b
When a specificweight of aggregate isEcalled for, what type of scale is used?
b b b b b b b b b b b b b
A. Dial
B. Beam
C. Pressure
D. Balance - CORRECT ANSWER -Beam b b b b
Concrete mixed in a transit mixer should be delivered and discharged within 1 1/2 hours orbefor e the
b b b b b b b b b b b b b b b b b b
drum has revolved what maximum number of times?
b b b b b b b b
A. 100
B. 200
C. 300
D. 400 - CORRECT ANSWER -300
b b b b
, Portland cement is manufactured from finely ground limestone mixed with which materials?
b b b b b b b b b b b
1. Clay
2. Shale
3. Marl
4. All of the above - CORRECT ANSWER -All of the above
b b b b b b b b b b
Thechemical reaction between cementand waterthat producesconcrete is known
b b b b b b b b b b b
b by what term?
b b
1. Concrete
2. Hydraulics
3. Hydration
4. Evaporation - CORRECT ANSWER -Hydration b b b b
How is laitance produced in concrete?
b b b b b
1. Water collects under the surface of the cement.
b b b b b b b
2. Cementis hydrated with saltwater. b b b b
3. Cementis hydrated with minimum water. b b b b b
4. Cementishydratedwithexcess water. - CORRECT ANSWER -
b b b b b b b b b
Cement is hydrated with excess water.
b b b b b b
(Trueor False) Aggregateis thematerial combinedwith cement and water to make
b b b b b b b b b b b b b
b concrete. - CORRECT ANSWER -True b b b b
Aggregates used in concrete occupy what percentage of the mixEbyweight?
b b b b b b b b b b
1. Between 90% to 95% b b b
Operations Questions with CorrectAnswers 2025 b b b b b
What chemical reaction occurs when water and cement are combined?
b b b b b b b b b
A. Emulsification
B. Hydration
C. Solidification
D. Hydraulicfusion - CORRECT ANSWER -Hydration
b b b b b
What process mustbe minimized when stockpiling aggregates?
b b b b b b b
A. Segregation
B. Separation
C. Solidification
D. Disintegration - CORRECT ANSWER -Segregation b b b b
When a specificweight of aggregate isEcalled for, what type of scale is used?
b b b b b b b b b b b b b
A. Dial
B. Beam
C. Pressure
D. Balance - CORRECT ANSWER -Beam b b b b
Concrete mixed in a transit mixer should be delivered and discharged within 1 1/2 hours orbefor e the
b b b b b b b b b b b b b b b b b b
drum has revolved what maximum number of times?
b b b b b b b b
A. 100
B. 200
C. 300
D. 400 - CORRECT ANSWER -300
b b b b
, Portland cement is manufactured from finely ground limestone mixed with which materials?
b b b b b b b b b b b
1. Clay
2. Shale
3. Marl
4. All of the above - CORRECT ANSWER -All of the above
b b b b b b b b b b
Thechemical reaction between cementand waterthat producesconcrete is known
b b b b b b b b b b b
b by what term?
b b
1. Concrete
2. Hydraulics
3. Hydration
4. Evaporation - CORRECT ANSWER -Hydration b b b b
How is laitance produced in concrete?
b b b b b
1. Water collects under the surface of the cement.
b b b b b b b
2. Cementis hydrated with saltwater. b b b b
3. Cementis hydrated with minimum water. b b b b b
4. Cementishydratedwithexcess water. - CORRECT ANSWER -
b b b b b b b b b
Cement is hydrated with excess water.
b b b b b b
(Trueor False) Aggregateis thematerial combinedwith cement and water to make
b b b b b b b b b b b b b
b concrete. - CORRECT ANSWER -True b b b b
Aggregates used in concrete occupy what percentage of the mixEbyweight?
b b b b b b b b b b
1. Between 90% to 95% b b b
