ACI Concrete Field Testing Technician — Grade I Certification
Exam – Complete Exam with Questions and 100% Verified
Correct Answers and Explanations -2026/2027 Update with
Guaranteed Pass.
Question 1
The primary responsibility of an ACI Concrete Field Testing Technician Grade
I is to:
A. Perform standardized field tests on freshly mixed concrete
B. Design concrete mixtures
C. Manufacture cement
D. Repair concrete structures
Correct Answer: A. Perform standardized field tests on freshly mixed
concrete
Explanation:
An ACI Concrete Field Testing Technician Grade I is trained to properly
perform and record ASTM standard tests on freshly mixed concrete. These
tests help determine concrete quality, consistency, and compliance with
project specifications.
Question 2
Fresh concrete testing is performed primarily to:
A. Evaluate concrete properties before placement and acceptance
B. Determine the age of cement
C. Replace structural engineering calculations
D. Measure steel reinforcement strength
Correct Answer: A. Evaluate concrete properties before placement and
acceptance
1
,Explanation:
Field tests help determine characteristics such as slump, air content,
temperature, unit weight, and strength sample preparation before concrete is
placed.
Question 3
The standard test method for measuring concrete slump is:
A. ASTM C143
B. ASTM C231
C. ASTM C138
D. ASTM C31
Correct Answer: A. ASTM C143
Explanation:
ASTM C143 covers the slump test, which measures the consistency and
workability of freshly mixed concrete.
Question 4
The slump test measures:
A. Consistency and workability of fresh concrete
B. Compressive strength directly
C. Cement quality
D. Concrete durability only
Correct Answer: A. Consistency and workability of fresh concrete
Explanation:
Slump indicates how easily fresh concrete can be placed and consolidated. It
does not directly measure strength.
Question 5
2
,The slump cone is also called the:
A. Abrams cone
B. Proctor cone
C. Marshall cone
D. Vicat cone
Correct Answer: A. Abrams cone
Explanation:
The Abrams cone is the standard mold used for the concrete slump test.
Question 6
The height of the standard slump cone is:
A. 12 inches (300 mm)
B. 6 inches (150 mm)
C. 18 inches (450 mm)
D. 24 inches (600 mm)
Correct Answer: A. 12 inches (300 mm)
Explanation:
The standard slump cone is approximately 12 inches high with specific top
and bottom diameters required by ASTM C143.
Question 7
During the slump test, concrete is placed into the cone in:
A. Three equal layers
B. One layer
C. Two layers
D. Five layers
Correct Answer: A. Three equal layers
3
, Explanation:
The slump cone is filled in three approximately equal layers, with each layer
rodded 25 times to consolidate the concrete.
Question 8
The standard tamping rod used for slump testing has a diameter of:
A. 5/8 inch (16 mm)
B. 1 inch (25 mm)
C. 1/4 inch (6 mm)
D. 2 inches (50 mm)
Correct Answer: A. 5/8 inch (16 mm)
Explanation:
ASTM C143 requires a round, straight steel rod approximately 5/8 inch
diameter and 24 inches long with a hemispherical tip.
Question 9
A slump test should be completed within:
A. 2.5 minutes after beginning the filling operation
B. 10 minutes
C. 30 minutes
D. 1 hour
Correct Answer: A. 2.5 minutes after beginning the filling operation
Explanation:
The test must be performed quickly to minimize changes in concrete
consistency.
Question 10
4
Exam – Complete Exam with Questions and 100% Verified
Correct Answers and Explanations -2026/2027 Update with
Guaranteed Pass.
Question 1
The primary responsibility of an ACI Concrete Field Testing Technician Grade
I is to:
A. Perform standardized field tests on freshly mixed concrete
B. Design concrete mixtures
C. Manufacture cement
D. Repair concrete structures
Correct Answer: A. Perform standardized field tests on freshly mixed
concrete
Explanation:
An ACI Concrete Field Testing Technician Grade I is trained to properly
perform and record ASTM standard tests on freshly mixed concrete. These
tests help determine concrete quality, consistency, and compliance with
project specifications.
Question 2
Fresh concrete testing is performed primarily to:
A. Evaluate concrete properties before placement and acceptance
B. Determine the age of cement
C. Replace structural engineering calculations
D. Measure steel reinforcement strength
Correct Answer: A. Evaluate concrete properties before placement and
acceptance
1
,Explanation:
Field tests help determine characteristics such as slump, air content,
temperature, unit weight, and strength sample preparation before concrete is
placed.
Question 3
The standard test method for measuring concrete slump is:
A. ASTM C143
B. ASTM C231
C. ASTM C138
D. ASTM C31
Correct Answer: A. ASTM C143
Explanation:
ASTM C143 covers the slump test, which measures the consistency and
workability of freshly mixed concrete.
Question 4
The slump test measures:
A. Consistency and workability of fresh concrete
B. Compressive strength directly
C. Cement quality
D. Concrete durability only
Correct Answer: A. Consistency and workability of fresh concrete
Explanation:
Slump indicates how easily fresh concrete can be placed and consolidated. It
does not directly measure strength.
Question 5
2
,The slump cone is also called the:
A. Abrams cone
B. Proctor cone
C. Marshall cone
D. Vicat cone
Correct Answer: A. Abrams cone
Explanation:
The Abrams cone is the standard mold used for the concrete slump test.
Question 6
The height of the standard slump cone is:
A. 12 inches (300 mm)
B. 6 inches (150 mm)
C. 18 inches (450 mm)
D. 24 inches (600 mm)
Correct Answer: A. 12 inches (300 mm)
Explanation:
The standard slump cone is approximately 12 inches high with specific top
and bottom diameters required by ASTM C143.
Question 7
During the slump test, concrete is placed into the cone in:
A. Three equal layers
B. One layer
C. Two layers
D. Five layers
Correct Answer: A. Three equal layers
3
, Explanation:
The slump cone is filled in three approximately equal layers, with each layer
rodded 25 times to consolidate the concrete.
Question 8
The standard tamping rod used for slump testing has a diameter of:
A. 5/8 inch (16 mm)
B. 1 inch (25 mm)
C. 1/4 inch (6 mm)
D. 2 inches (50 mm)
Correct Answer: A. 5/8 inch (16 mm)
Explanation:
ASTM C143 requires a round, straight steel rod approximately 5/8 inch
diameter and 24 inches long with a hemispherical tip.
Question 9
A slump test should be completed within:
A. 2.5 minutes after beginning the filling operation
B. 10 minutes
C. 30 minutes
D. 1 hour
Correct Answer: A. 2.5 minutes after beginning the filling operation
Explanation:
The test must be performed quickly to minimize changes in concrete
consistency.
Question 10
4
