LOUISIANA PCC FIELD TESTER
EXAMINATION WITH ACTUAL QUESTIONS
AND VERIFIED ANSWERS, PLUS
EXPLAINED RATIONALES/EXPERT
VERIFIED FOR GUARANTEED 100% PASS
2026/LATEST UPDATE/INSTANT
DOWNLOAD PDF
1. During PCC placement, a field tester is asked to determine
whether the freshly delivered concrete has the required consistency.
Which test is primarily used to evaluate concrete consistency?
A. Air-content test
B. Slump test
C. Unit-weight test
D. Concrete temperature test
Answer: B. Slump test
Rationale: The slump test is used to evaluate the consistency and
relative workability of freshly mixed concrete. A properly performed
slump test can indicate whether the concrete has a consistency
reasonably consistent with the specified mixture. It does not directly
measure strength, air content, or temperature.
2. A field tester is preparing to perform a slump test. Which
procedure is most appropriate?
A. Fill the cone in one lift and strike it off
B. Fill the cone in two lifts and rod each lift 10 times
C. Fill the cone in three approximately equal layers and rod each layer as
1
,prescribed
D. Fill the cone continuously while vibrating it
Answer: C. Fill the cone in three approximately equal layers and
rod each layer as prescribed
Rationale: The conventional slump test uses a slump cone filled in
three approximately equal layers, with each layer rodded according to
the applicable test procedure. Proper layering and consolidation are
essential because inadequate or excessive consolidation can produce a
misleading slump value.
3. What is the primary purpose of rodding each layer during the
slump test?
A. To increase the concrete temperature
B. To remove entrained air intentionally
C. To consolidate the concrete uniformly within the mold
D. To increase the cement content
Answer: C. To consolidate the concrete uniformly within the mold
Rationale: Rodding provides standardized consolidation of the
concrete inside the slump cone. The objective is to make the test
reproducible. The tester should follow the prescribed number and
distribution of strokes rather than using arbitrary force or additional
strokes.
4. After the slump cone is filled and struck off, the tester should
remove the mold by:
A. Slowly rotating it while lifting
B. Lifting it vertically and steadily
2
,C. Pulling it sideways
D. Tapping it with a hammer
Answer: B. Lifting it vertically and steadily
Rationale: The cone should be lifted vertically without twisting or
lateral movement that could disturb the concrete. Improper removal
can cause the concrete to shear or collapse and can invalidate or
distort the measured slump.
5. A concrete sample produces a slump that is significantly higher
than the specified range. What should the field tester do first?
A. Automatically add cement
B. Automatically add water
C. Document the result and follow the applicable project procedure
D. Discard the concrete without testing anything else
Answer: C. Document the result and follow the applicable project
procedure
Rationale: A field tester should not independently alter a concrete
mixture simply because a test result is outside the specification. The
result should be properly documented and communicated, and any
permitted adjustment or disposition should follow the governing
specification and authorized procedure.
6. Which test is used to determine the temperature of freshly mixed
concrete?
A. Slump test
B. Pressure test
C. Concrete temperature test
D. Unit-weight test
3
, Answer: C. Concrete temperature test
Rationale: Fresh concrete temperature is measured using an
appropriate concrete thermometer or temperature-measuring device.
Temperature can significantly affect setting, workability, strength
development, and durability, making it an important field-control
measurement.
7. Why is the temperature of freshly mixed concrete important
during placement?
A. It determines the color of hardened concrete
B. It can influence setting time, workability, strength development, and
durability
C. It determines the aggregate gradation
D. It determines the cement brand
Answer: B. It can influence setting time, workability, strength
development, and durability
Rationale: Concrete temperature affects hydration and the rate at
which concrete loses workability and sets. Excessively high
temperatures can accelerate hydration and increase the risk of
problems associated with rapid setting and thermal effects, while
excessively low temperatures can delay setting and strength
development.
8. Which test is commonly used to determine the air content of
normal-weight freshly mixed concrete?
A. Slump test
B. Pressure method
C. Rebound hammer test
D. Core test
4
EXAMINATION WITH ACTUAL QUESTIONS
AND VERIFIED ANSWERS, PLUS
EXPLAINED RATIONALES/EXPERT
VERIFIED FOR GUARANTEED 100% PASS
2026/LATEST UPDATE/INSTANT
DOWNLOAD PDF
1. During PCC placement, a field tester is asked to determine
whether the freshly delivered concrete has the required consistency.
Which test is primarily used to evaluate concrete consistency?
A. Air-content test
B. Slump test
C. Unit-weight test
D. Concrete temperature test
Answer: B. Slump test
Rationale: The slump test is used to evaluate the consistency and
relative workability of freshly mixed concrete. A properly performed
slump test can indicate whether the concrete has a consistency
reasonably consistent with the specified mixture. It does not directly
measure strength, air content, or temperature.
2. A field tester is preparing to perform a slump test. Which
procedure is most appropriate?
A. Fill the cone in one lift and strike it off
B. Fill the cone in two lifts and rod each lift 10 times
C. Fill the cone in three approximately equal layers and rod each layer as
1
,prescribed
D. Fill the cone continuously while vibrating it
Answer: C. Fill the cone in three approximately equal layers and
rod each layer as prescribed
Rationale: The conventional slump test uses a slump cone filled in
three approximately equal layers, with each layer rodded according to
the applicable test procedure. Proper layering and consolidation are
essential because inadequate or excessive consolidation can produce a
misleading slump value.
3. What is the primary purpose of rodding each layer during the
slump test?
A. To increase the concrete temperature
B. To remove entrained air intentionally
C. To consolidate the concrete uniformly within the mold
D. To increase the cement content
Answer: C. To consolidate the concrete uniformly within the mold
Rationale: Rodding provides standardized consolidation of the
concrete inside the slump cone. The objective is to make the test
reproducible. The tester should follow the prescribed number and
distribution of strokes rather than using arbitrary force or additional
strokes.
4. After the slump cone is filled and struck off, the tester should
remove the mold by:
A. Slowly rotating it while lifting
B. Lifting it vertically and steadily
2
,C. Pulling it sideways
D. Tapping it with a hammer
Answer: B. Lifting it vertically and steadily
Rationale: The cone should be lifted vertically without twisting or
lateral movement that could disturb the concrete. Improper removal
can cause the concrete to shear or collapse and can invalidate or
distort the measured slump.
5. A concrete sample produces a slump that is significantly higher
than the specified range. What should the field tester do first?
A. Automatically add cement
B. Automatically add water
C. Document the result and follow the applicable project procedure
D. Discard the concrete without testing anything else
Answer: C. Document the result and follow the applicable project
procedure
Rationale: A field tester should not independently alter a concrete
mixture simply because a test result is outside the specification. The
result should be properly documented and communicated, and any
permitted adjustment or disposition should follow the governing
specification and authorized procedure.
6. Which test is used to determine the temperature of freshly mixed
concrete?
A. Slump test
B. Pressure test
C. Concrete temperature test
D. Unit-weight test
3
, Answer: C. Concrete temperature test
Rationale: Fresh concrete temperature is measured using an
appropriate concrete thermometer or temperature-measuring device.
Temperature can significantly affect setting, workability, strength
development, and durability, making it an important field-control
measurement.
7. Why is the temperature of freshly mixed concrete important
during placement?
A. It determines the color of hardened concrete
B. It can influence setting time, workability, strength development, and
durability
C. It determines the aggregate gradation
D. It determines the cement brand
Answer: B. It can influence setting time, workability, strength
development, and durability
Rationale: Concrete temperature affects hydration and the rate at
which concrete loses workability and sets. Excessively high
temperatures can accelerate hydration and increase the risk of
problems associated with rapid setting and thermal effects, while
excessively low temperatures can delay setting and strength
development.
8. Which test is commonly used to determine the air content of
normal-weight freshly mixed concrete?
A. Slump test
B. Pressure method
C. Rebound hammer test
D. Core test
4
