Maryland Concrete Testing Technician
Grade I Exam Practice Questions And
Correct Answers (Verified Answers) Plus
Rationale 2026 Q&A| Instant Download
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1. Which ASTM standard is primarily used for sampling freshly mixed
concrete in the field?
A. ASTM C143
B. ASTM C172
C. ASTM C1064
D. ASTM C31
B. ASTM C172
This standard governs the correct procedures for obtaining
representative samples of freshly mixed concrete, ensuring test
results accurately reflect the batch quality before other field tests are
conducted.
2. What is the main purpose of ASTM C1064 in concrete field testing?
A. Measuring air content
B. Determining compressive strength
C. Measuring temperature of fresh concrete
D. Determining slump consistency
C. Measuring temperature of fresh concrete
ASTM C1064 is used to determine the temperature of freshly mixed
, hydraulic-cement concrete, which is critical for assessing hydration
rate and workability.
3. Which test method is used to determine slump of concrete in the
field?
A. ASTM C138
B. ASTM C143
C. ASTM C231
D. ASTM C172
B. ASTM C143
ASTM C143 measures the slump of fresh concrete, providing an
indication of its workability and consistency for placement.
4. Which ASTM standard is used for making and curing concrete test
specimens in the field?
A. ASTM C31
B. ASTM C173
C. ASTM C1064
D. ASTM C138
A. ASTM C31
ASTM C31 outlines procedures for molding and curing concrete
cylinders or beams in the field to ensure reliable strength testing
results later.
5. What property is primarily determined using ASTM C138?
A. Air content by pressure method
B. Slump and flow
C. Unit weight, yield, and gravimetric air content
D. Flexural strength
C. Unit weight, yield, and gravimetric air content
ASTM C138 is used to determine the density (unit weight) of concrete
and can also provide yield and air content through gravimetric
measurement.
6. Which method is covered by ASTM C231?
A. Volumetric air content test
B. Pressure method air content test
C. Temperature test
D. Compressive strength test
, B. Pressure method air content test
ASTM C231 measures the air content in fresh concrete using a
pressure meter, which is commonly used for normal-weight concrete.
7. ASTM C173 is used to determine which property?
A. Air content using volumetric method
B. Slump resistance
C. Aggregate gradation
D. Cement content
A. Air content using volumetric method
ASTM C173 determines air content in fresh concrete using a
volumetric method, typically used for lightweight or highly porous
aggregate mixes.
8. What is the primary focus of a Grade I Concrete Field Testing
Technician certification?
A. Designing concrete mix proportions
B. Supervising structural concrete placement
C. Performing and recording field tests on fresh concrete
D. Laboratory compressive strength analysis only
C. Performing and recording field tests on fresh concrete
The certification ensures technicians can correctly sample, test, and
document fresh concrete properties according to standardized ASTM
methods.
9. How many basic field tests are typically associated with Grade I
concrete technician certification?
A. Five
B. Six
C. Seven
D. Ten
C. Seven
The Grade I program centers on seven core ASTM test methods that
collectively evaluate the key properties of freshly mixed concrete.
10. What is the minimum overall passing score commonly required
on the written exam?
A. 50%
B. 60%
Grade I Exam Practice Questions And
Correct Answers (Verified Answers) Plus
Rationale 2026 Q&A| Instant Download
1. Which ASTM standard is primarily used for sampling freshly mixed
concrete in the field?
A. ASTM C143
B. ASTM C172
C. ASTM C1064
D. ASTM C31
B. ASTM C172
This standard governs the correct procedures for obtaining
representative samples of freshly mixed concrete, ensuring test
results accurately reflect the batch quality before other field tests are
conducted.
2. What is the main purpose of ASTM C1064 in concrete field testing?
A. Measuring air content
B. Determining compressive strength
C. Measuring temperature of fresh concrete
D. Determining slump consistency
C. Measuring temperature of fresh concrete
ASTM C1064 is used to determine the temperature of freshly mixed
, hydraulic-cement concrete, which is critical for assessing hydration
rate and workability.
3. Which test method is used to determine slump of concrete in the
field?
A. ASTM C138
B. ASTM C143
C. ASTM C231
D. ASTM C172
B. ASTM C143
ASTM C143 measures the slump of fresh concrete, providing an
indication of its workability and consistency for placement.
4. Which ASTM standard is used for making and curing concrete test
specimens in the field?
A. ASTM C31
B. ASTM C173
C. ASTM C1064
D. ASTM C138
A. ASTM C31
ASTM C31 outlines procedures for molding and curing concrete
cylinders or beams in the field to ensure reliable strength testing
results later.
5. What property is primarily determined using ASTM C138?
A. Air content by pressure method
B. Slump and flow
C. Unit weight, yield, and gravimetric air content
D. Flexural strength
C. Unit weight, yield, and gravimetric air content
ASTM C138 is used to determine the density (unit weight) of concrete
and can also provide yield and air content through gravimetric
measurement.
6. Which method is covered by ASTM C231?
A. Volumetric air content test
B. Pressure method air content test
C. Temperature test
D. Compressive strength test
, B. Pressure method air content test
ASTM C231 measures the air content in fresh concrete using a
pressure meter, which is commonly used for normal-weight concrete.
7. ASTM C173 is used to determine which property?
A. Air content using volumetric method
B. Slump resistance
C. Aggregate gradation
D. Cement content
A. Air content using volumetric method
ASTM C173 determines air content in fresh concrete using a
volumetric method, typically used for lightweight or highly porous
aggregate mixes.
8. What is the primary focus of a Grade I Concrete Field Testing
Technician certification?
A. Designing concrete mix proportions
B. Supervising structural concrete placement
C. Performing and recording field tests on fresh concrete
D. Laboratory compressive strength analysis only
C. Performing and recording field tests on fresh concrete
The certification ensures technicians can correctly sample, test, and
document fresh concrete properties according to standardized ASTM
methods.
9. How many basic field tests are typically associated with Grade I
concrete technician certification?
A. Five
B. Six
C. Seven
D. Ten
C. Seven
The Grade I program centers on seven core ASTM test methods that
collectively evaluate the key properties of freshly mixed concrete.
10. What is the minimum overall passing score commonly required
on the written exam?
A. 50%
B. 60%
