1
ACI Certification- Concrete Field
Testing Technician Grade 1 CP-1 (12)
Questions and Correct Answers. 2026-
2027 Rated A
A 6 by 12 in. [150 mm by 300 mm] cylinder mold can be used for concrete
containing aggregate with particles not exceeding _____ in size, without
the need for wet sieving the concrete. - ANS2 in. [50 mm]
A mallet weighing _____ must be used to tap the sides of the bowl after
rodding each layer. - ANS1.25 ± 0.50 lb. (600 ± 200 g)
A maximum temperature of freshly mixed concrete is specified in ASTM
C1064. True or False? - ANSFalse
A plastic container can be used for the measure in this method. True or
False? - ANSFalse, measure must be steel or other suitable metal
After completing the strike-off procedure, what must be done before
weighing the measure and sample? - ANSClean off any excess concrete
After consolidation of the final layer, an excess of concrete _____ above
the top of the measure is considered optimum. - ANS⅛ in. [3 mm]
1
, 2
After molding test specimens, you should wait two hours before moving
them to the location of initial storage. True or False? - ANSFalse; the
specimens must be moved immediately
After rodding each layer, what should be done to the measure before
adding another layer of concrete? - ANSTap the sides of the measure
smartly 10 to 15 times with the mallet
After the final rodding, the sides of the slump mold should be tapped lightly
with the tamping rod. True or False? - ANSFalse
Air Content Calculation
Your air meter has been damaged in transit to the job site. You do,
however, possess the theoretical density that was determined in the lab; it
is 151.4 lb/ft3 (2425 kg/m3). Using the density calculated in Question 21,
calculate the air content of the batch (in percentage). - ANS5.0% = [(151.4
lb/ft3 - 143.9 lb/ft3) / 151.4 lb/ft3] × 100
5.0% = [(2425 kg/m3 - 2305 kg/m3) / 2425 kg/m3] × 100
Air meter bowls used for this test must conform to ASTM _____ and be
calibrated for volume according
to ASTM _____. - ANSC231, C29
ASTM C1064 - ANSStandard Test Method For Temperature of Freshly
Mixed Hydraulic-Cement Concrete
ASTM C138 - ANSStandard Test Method for Density (Unit Weight),
2
, 3
Yield, and Air Content (Gravimetric) of Concrete
ASTM C143 - ANSStandard Test Method for Slump of Hydraulic-Cement
Concrete
ASTM C172 - ANSStandard Practice for Sampling Freshly Mixed Concrete
ASTM C173 - ANSStandard Test Method For Air Content of Freshly Mixed
Concrete by the Volumetric Method
ASTM C231 -
ANSStandardTestMethodforAirContentofFreshlyMixedConcretebythePress
ureMethod
ASTM C31 - ANSStandard Practice for Making and Curing
Concrete Test Specimens in the Field
ASTM Method C31 gives standardized requirements for _____, _____,
_____, and _____, of test specimens. - ANSMaking, curing, protecting,
transporting
At the end of the procedure, the air meter is _______. - ANSDisassembled
and its contents examined
Concrete mixtures with specified strengths of 6000 psi [40 MPa] or greater
shall have an initial curing temperature between ___________. - ANS68
and 78 ºF [20 and 26 ºC]
3
ACI Certification- Concrete Field
Testing Technician Grade 1 CP-1 (12)
Questions and Correct Answers. 2026-
2027 Rated A
A 6 by 12 in. [150 mm by 300 mm] cylinder mold can be used for concrete
containing aggregate with particles not exceeding _____ in size, without
the need for wet sieving the concrete. - ANS2 in. [50 mm]
A mallet weighing _____ must be used to tap the sides of the bowl after
rodding each layer. - ANS1.25 ± 0.50 lb. (600 ± 200 g)
A maximum temperature of freshly mixed concrete is specified in ASTM
C1064. True or False? - ANSFalse
A plastic container can be used for the measure in this method. True or
False? - ANSFalse, measure must be steel or other suitable metal
After completing the strike-off procedure, what must be done before
weighing the measure and sample? - ANSClean off any excess concrete
After consolidation of the final layer, an excess of concrete _____ above
the top of the measure is considered optimum. - ANS⅛ in. [3 mm]
1
, 2
After molding test specimens, you should wait two hours before moving
them to the location of initial storage. True or False? - ANSFalse; the
specimens must be moved immediately
After rodding each layer, what should be done to the measure before
adding another layer of concrete? - ANSTap the sides of the measure
smartly 10 to 15 times with the mallet
After the final rodding, the sides of the slump mold should be tapped lightly
with the tamping rod. True or False? - ANSFalse
Air Content Calculation
Your air meter has been damaged in transit to the job site. You do,
however, possess the theoretical density that was determined in the lab; it
is 151.4 lb/ft3 (2425 kg/m3). Using the density calculated in Question 21,
calculate the air content of the batch (in percentage). - ANS5.0% = [(151.4
lb/ft3 - 143.9 lb/ft3) / 151.4 lb/ft3] × 100
5.0% = [(2425 kg/m3 - 2305 kg/m3) / 2425 kg/m3] × 100
Air meter bowls used for this test must conform to ASTM _____ and be
calibrated for volume according
to ASTM _____. - ANSC231, C29
ASTM C1064 - ANSStandard Test Method For Temperature of Freshly
Mixed Hydraulic-Cement Concrete
ASTM C138 - ANSStandard Test Method for Density (Unit Weight),
2
, 3
Yield, and Air Content (Gravimetric) of Concrete
ASTM C143 - ANSStandard Test Method for Slump of Hydraulic-Cement
Concrete
ASTM C172 - ANSStandard Practice for Sampling Freshly Mixed Concrete
ASTM C173 - ANSStandard Test Method For Air Content of Freshly Mixed
Concrete by the Volumetric Method
ASTM C231 -
ANSStandardTestMethodforAirContentofFreshlyMixedConcretebythePress
ureMethod
ASTM C31 - ANSStandard Practice for Making and Curing
Concrete Test Specimens in the Field
ASTM Method C31 gives standardized requirements for _____, _____,
_____, and _____, of test specimens. - ANSMaking, curing, protecting,
transporting
At the end of the procedure, the air meter is _______. - ANSDisassembled
and its contents examined
Concrete mixtures with specified strengths of 6000 psi [40 MPa] or greater
shall have an initial curing temperature between ___________. - ANS68
and 78 ºF [20 and 26 ºC]
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