LADOTD SAMPLING AND TESTING PLASTIC CONCRETE
EXAM QUESTIONS WITH COMPLETE SOLUTIONS
The common components of concrete are ....... - CORRECT ANSWER✔✔-
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Aggregate, Cement, and Water | | |
What cement is the most common type of cement used today? - CORRECT
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ANSWER✔✔-Portland Cement |
The _______ to _______ ratio is the most important factor in producing good
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concrete. - CORRECT ANSWER✔✔-Water to Cement
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List at least three tests performed on plastic concrete - CORRECT ANSWER✔✔-
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Slump, Strength (Cylinder), Density, Volumetric Air, Pressurized Air
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List five of the pieces of equipment needed to sample fresh concrete - CORRECT
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ANSWER✔✔-Wheelbarrow, sampling shovel, scoop, Trowel, Timer, Watch, | | | | | | |
Thermometer, Identification Forms, Testing Equipment
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The sampling area should be free from any _________ and _____________ -
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CORRECT ANSWER✔✔-loose debris and contamination
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The concrete sample should only be obtained from one location in the discharge
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pile. - CORRECT ANSWER✔✔-False
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, You should avoid getting any of the subgrade into the sample - CORRECT
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ANSWER✔✔-True
A sample can be directly discharged into a wheelbarrow or other suitable
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container when sampled from a transport with a chute or a pump system. -
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CORRECT ANSWER✔✔-True |
It is not necessary to allow sufficient material to coat the chute before taking a
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sample. - CORRECT ANSWER✔✔-False
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A separate sample should be taken for every test or procedure being performed. -
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CORRECT ANSWER✔✔-False
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A _________ is a suitable container for a sampling because it allows the tester to
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transport material from the sampling are to the test area. - CORRECT
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ANSWER✔✔-Wheelbarrow
The time needed between sampling and testing should not exceed ______
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minutes - CORRECT ANSWER✔✔-15
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Samples obtained from a transport with a __________ or a ____________ system
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can be discharged directly into the holding container. - CORRECT ANSWER✔✔-
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discharge chute or a pump | | | |
EXAM QUESTIONS WITH COMPLETE SOLUTIONS
The common components of concrete are ....... - CORRECT ANSWER✔✔-
| | | | | | | | |
Aggregate, Cement, and Water | | |
What cement is the most common type of cement used today? - CORRECT
| | | | | | | | | | | | |
ANSWER✔✔-Portland Cement |
The _______ to _______ ratio is the most important factor in producing good
| | | | | | | | | | | | |
concrete. - CORRECT ANSWER✔✔-Water to Cement
| | | | |
List at least three tests performed on plastic concrete - CORRECT ANSWER✔✔-
| | | | | | | | | | |
Slump, Strength (Cylinder), Density, Volumetric Air, Pressurized Air
| | | | | | |
List five of the pieces of equipment needed to sample fresh concrete - CORRECT
| | | | | | | | | | | | | |
ANSWER✔✔-Wheelbarrow, sampling shovel, scoop, Trowel, Timer, Watch, | | | | | | |
Thermometer, Identification Forms, Testing Equipment
| | | |
The sampling area should be free from any _________ and _____________ -
| | | | | | | | | | | |
CORRECT ANSWER✔✔-loose debris and contamination
| | | |
The concrete sample should only be obtained from one location in the discharge
| | | | | | | | | | | | |
pile. - CORRECT ANSWER✔✔-False
| | |
, You should avoid getting any of the subgrade into the sample - CORRECT
| | | | | | | | | | | | |
ANSWER✔✔-True
A sample can be directly discharged into a wheelbarrow or other suitable
| | | | | | | | | | | |
container when sampled from a transport with a chute or a pump system. -
| | | | | | | | | | | | | |
CORRECT ANSWER✔✔-True |
It is not necessary to allow sufficient material to coat the chute before taking a
| | | | | | | | | | | | | | |
sample. - CORRECT ANSWER✔✔-False
| | |
A separate sample should be taken for every test or procedure being performed. -
| | | | | | | | | | | | |
CORRECT ANSWER✔✔-False
| |
A _________ is a suitable container for a sampling because it allows the tester to
| | | | | | | | | | | | | | |
transport material from the sampling are to the test area. - CORRECT
| | | | | | | | | | | |
ANSWER✔✔-Wheelbarrow
The time needed between sampling and testing should not exceed ______
| | | | | | | | | | |
minutes - CORRECT ANSWER✔✔-15
| | |
Samples obtained from a transport with a __________ or a ____________ system
| | | | | | | | | | |
can be discharged directly into the holding container. - CORRECT ANSWER✔✔-
| | | | | | | | | | |
discharge chute or a pump | | | |
