ACI Concrete Field-Testing
Technician Grade I
Certification Exam
Latest Update 2026/2027
Questions & Answers | Grade A | 100% Correct
Total Questions: 120
Passing Score: 70%
Testing Time: 120 minutes
Alignment: ACI CP-1 (2026-2027)
ASTM Standards: C172, C143, C1064, C138, C31, C231, C173
Cognitive Levels: 30% Recall, 50% Application, 20% Analysis
Exam Sections Overview
Section Topic Questions
Section 1 Safety Practices & Technician Responsibilities Q1-8
Section 2 Sampling Fresh Concrete (ASTM C172) Q9-20
Section 3 Slump Testing (ASTM C143) Q21-35
Section 4 Temperature Measurement (ASTM C1064) Q36-48
,Section 5 Density, Unit Weight, Yield & Air Content (ASTM C138) Q49-70
Section 6 Making and Curing Test Specimens (ASTM C31) Q71-88
Section 7 Compressive Strength Testing Fundamentals Q89-98
Section 8 Air Content by Pressure Method (ASTM C231) Q99-110
Section 9 Documentation & Reporting Requirements Q111-120
,ACI Concrete Field-Testing Technician Grade I Certification Exam (2026-2027) Questions & Answers | Grade A
Section 1: Safety Practices & Technician Responsibilities
(Questions 1-8)
Q1: Before beginning concrete field testing at an active construction site, what is the
technician's PRIMARY responsibility?
A. Start testing immediately to meet project deadlines
B. Collect all required testing equipment from the laboratory
C. Assess site hazards including moving equipment, pump booms, and active
operations before testing begins [CORRECT]
D. Contact the project engineer to request testing authorization
Correct Answer: C
Rationale: According to ACI CP-1 and safety protocols, the technician's primary safety
responsibility is to assess hazards associated with moving equipment, pump booms, and
active construction operations before testing begins. Starting testing without hazard
assessment (Option A) jeopardizes safety. Collecting equipment (Option B) and contacting
the engineer (Option D) are important but do not address the immediate need for hazard
assessment at the work site.
Q2: A certified ACI Grade I Field-Testing Technician's primary role is to:
A. Design concrete mix proportions for the project
B. Perform standardized tests according to ASTM procedures [CORRECT]
C. Authorize change orders for concrete placement specifications
D. Perform structural design evaluations of concrete elements
Correct Answer: B
Rationale: The ACI Grade I certification specifically demonstrates competence in
performing standardized tests according to ASTM procedures. Grade I certification does
NOT include mix design (Option A), structural design (Option D), or change order
authorization (Option C). These responsibilities fall outside the scope of a Grade I
technician and require higher-level certifications or professional engineering licensure
per ACI CP-1 2026-2027 requirements.
Q3: Before sampling concrete from a truck mixer at a construction site, the technician
must first verify:
A. That the concrete truck has been dispatched from the batch plant
B. That safe access is available and hazard controls are in place [CORRECT]
C. That the project specifications allow for field testing
D. That the concrete supplier has provided a delivery ticket
Correct Answer: B
Rationale: ACI safety protocols require the technician to verify safe access and hazard
controls before sampling. While a delivery ticket (Option D) and project specifications
(Option C) are important for documentation, they do not address safety. Dispatch
confirmation (Option A) is operational information, not a safety prerequisite. The
technician must ensure safe working conditions before approaching the mixer or discharge
point per ACI CP-1 safety guidelines.
3
, ACI Concrete Field-Testing Technician Grade I Certification Exam (2026-2027) Questions & Answers | Grade A
Q4: ACI Grade I certification demonstrates:
A. Authority to modify ASTM test procedures when field conditions require adaptation
B. Competence in standardized testing procedures and does not replace project
specifications or eliminate oversight responsibilities [CORRECT]
C. Ability to reject concrete deliveries based on personal judgment
D. Qualification to supervise other field-testing technicians on construction sites
Correct Answer: B
Rationale: ACI Grade I certification demonstrates competence in standardized testing
procedures but explicitly does NOT replace project specifications or eliminate oversight
responsibilities. The certified technician must still follow project specifications and
remain subject to oversight. Modifying ASTM procedures (Option A), rejecting concrete on
personal judgment (Option C), or supervising others (Option D) are outside Grade I scope
per ACI CP-1 2026-2027 certification requirements.
Q5: During concrete sampling at a site with an active concrete pump, the technician
notices the pump boom is swinging near the sampling area. What should the
technician do?
A. Continue sampling but work quickly to minimize exposure time
B. Relocate to a safe area and wait until the pump boom is stabilized before resuming
sampling [CORRECT]
C. Ask the pump operator to stop pumping while sampling occurs
D. Stand behind the truck mixer for protection while sampling
Correct Answer: B
Rationale: Safety protocols require the technician to relocate to a safe area and avoid
working near moving pump booms. Working quickly (Option A) still exposes the technician
to hazard. Asking the operator to stop pumping (Option C) may not be practical and
disrupts operations. Standing behind the mixer (Option D) does not guarantee safety from
the boom swing radius. ACI safety guidelines prioritize hazard avoidance over convenience
or schedule demands.
Q6: Which of the following activities falls OUTSIDE the scope of an ACI Grade I certified
field-testing technician?
A. Performing slump testing per ASTM C143
B. Measuring concrete temperature per ASTM C1064
C. Modifying the water-cement ratio of a concrete mix to improve workability
[CORRECT]
D. Determining air content by the pressure method per ASTM C231
Correct Answer: C
Rationale: Modifying the water-cement ratio (Option C) is a mix design decision that
falls outside the scope of a Grade I technician. Grade I certification covers performing
standardized tests: slump testing (Option A, ASTM C143), temperature measurement (Option
B, ASTM C1064), and air content determination (Option D, ASTM C231). Adjusting mix
proportions requires authority beyond Grade I certification per ACI CP-1.
Q7: A technician arrives at a bridge construction site to perform density testing. The
discharge point is on an elevated deck with no guardrails. According to ACI safety
4
Technician Grade I
Certification Exam
Latest Update 2026/2027
Questions & Answers | Grade A | 100% Correct
Total Questions: 120
Passing Score: 70%
Testing Time: 120 minutes
Alignment: ACI CP-1 (2026-2027)
ASTM Standards: C172, C143, C1064, C138, C31, C231, C173
Cognitive Levels: 30% Recall, 50% Application, 20% Analysis
Exam Sections Overview
Section Topic Questions
Section 1 Safety Practices & Technician Responsibilities Q1-8
Section 2 Sampling Fresh Concrete (ASTM C172) Q9-20
Section 3 Slump Testing (ASTM C143) Q21-35
Section 4 Temperature Measurement (ASTM C1064) Q36-48
,Section 5 Density, Unit Weight, Yield & Air Content (ASTM C138) Q49-70
Section 6 Making and Curing Test Specimens (ASTM C31) Q71-88
Section 7 Compressive Strength Testing Fundamentals Q89-98
Section 8 Air Content by Pressure Method (ASTM C231) Q99-110
Section 9 Documentation & Reporting Requirements Q111-120
,ACI Concrete Field-Testing Technician Grade I Certification Exam (2026-2027) Questions & Answers | Grade A
Section 1: Safety Practices & Technician Responsibilities
(Questions 1-8)
Q1: Before beginning concrete field testing at an active construction site, what is the
technician's PRIMARY responsibility?
A. Start testing immediately to meet project deadlines
B. Collect all required testing equipment from the laboratory
C. Assess site hazards including moving equipment, pump booms, and active
operations before testing begins [CORRECT]
D. Contact the project engineer to request testing authorization
Correct Answer: C
Rationale: According to ACI CP-1 and safety protocols, the technician's primary safety
responsibility is to assess hazards associated with moving equipment, pump booms, and
active construction operations before testing begins. Starting testing without hazard
assessment (Option A) jeopardizes safety. Collecting equipment (Option B) and contacting
the engineer (Option D) are important but do not address the immediate need for hazard
assessment at the work site.
Q2: A certified ACI Grade I Field-Testing Technician's primary role is to:
A. Design concrete mix proportions for the project
B. Perform standardized tests according to ASTM procedures [CORRECT]
C. Authorize change orders for concrete placement specifications
D. Perform structural design evaluations of concrete elements
Correct Answer: B
Rationale: The ACI Grade I certification specifically demonstrates competence in
performing standardized tests according to ASTM procedures. Grade I certification does
NOT include mix design (Option A), structural design (Option D), or change order
authorization (Option C). These responsibilities fall outside the scope of a Grade I
technician and require higher-level certifications or professional engineering licensure
per ACI CP-1 2026-2027 requirements.
Q3: Before sampling concrete from a truck mixer at a construction site, the technician
must first verify:
A. That the concrete truck has been dispatched from the batch plant
B. That safe access is available and hazard controls are in place [CORRECT]
C. That the project specifications allow for field testing
D. That the concrete supplier has provided a delivery ticket
Correct Answer: B
Rationale: ACI safety protocols require the technician to verify safe access and hazard
controls before sampling. While a delivery ticket (Option D) and project specifications
(Option C) are important for documentation, they do not address safety. Dispatch
confirmation (Option A) is operational information, not a safety prerequisite. The
technician must ensure safe working conditions before approaching the mixer or discharge
point per ACI CP-1 safety guidelines.
3
, ACI Concrete Field-Testing Technician Grade I Certification Exam (2026-2027) Questions & Answers | Grade A
Q4: ACI Grade I certification demonstrates:
A. Authority to modify ASTM test procedures when field conditions require adaptation
B. Competence in standardized testing procedures and does not replace project
specifications or eliminate oversight responsibilities [CORRECT]
C. Ability to reject concrete deliveries based on personal judgment
D. Qualification to supervise other field-testing technicians on construction sites
Correct Answer: B
Rationale: ACI Grade I certification demonstrates competence in standardized testing
procedures but explicitly does NOT replace project specifications or eliminate oversight
responsibilities. The certified technician must still follow project specifications and
remain subject to oversight. Modifying ASTM procedures (Option A), rejecting concrete on
personal judgment (Option C), or supervising others (Option D) are outside Grade I scope
per ACI CP-1 2026-2027 certification requirements.
Q5: During concrete sampling at a site with an active concrete pump, the technician
notices the pump boom is swinging near the sampling area. What should the
technician do?
A. Continue sampling but work quickly to minimize exposure time
B. Relocate to a safe area and wait until the pump boom is stabilized before resuming
sampling [CORRECT]
C. Ask the pump operator to stop pumping while sampling occurs
D. Stand behind the truck mixer for protection while sampling
Correct Answer: B
Rationale: Safety protocols require the technician to relocate to a safe area and avoid
working near moving pump booms. Working quickly (Option A) still exposes the technician
to hazard. Asking the operator to stop pumping (Option C) may not be practical and
disrupts operations. Standing behind the mixer (Option D) does not guarantee safety from
the boom swing radius. ACI safety guidelines prioritize hazard avoidance over convenience
or schedule demands.
Q6: Which of the following activities falls OUTSIDE the scope of an ACI Grade I certified
field-testing technician?
A. Performing slump testing per ASTM C143
B. Measuring concrete temperature per ASTM C1064
C. Modifying the water-cement ratio of a concrete mix to improve workability
[CORRECT]
D. Determining air content by the pressure method per ASTM C231
Correct Answer: C
Rationale: Modifying the water-cement ratio (Option C) is a mix design decision that
falls outside the scope of a Grade I technician. Grade I certification covers performing
standardized tests: slump testing (Option A, ASTM C143), temperature measurement (Option
B, ASTM C1064), and air content determination (Option D, ASTM C231). Adjusting mix
proportions requires authority beyond Grade I certification per ACI CP-1.
Q7: A technician arrives at a bridge construction site to perform density testing. The
discharge point is on an elevated deck with no guardrails. According to ACI safety
4
