ACI CONCRETE FIELD TESTING TECHNICIAN
GRADE I TEST PAPER 2026 COMPLETE
QUESTIONS WITH CORRECT ANSWERS
◉ ASTM Standard C138. Answer: Density (Unit Weight), Yield and Air
Content (Gravimetric) of Concrete
◉ ASTM Standard C173. Answer: Air Content of Freshly Mixed
Concrete by Volumetric Method
◉ ASTM Standard C231. Answer: Air Content of Freshly Mixed
Concrete by the Pressure Method
◉ ASTM Standard C143. Answer: Slump of Hydraulic-Cement
Concrete
◉ ASTM Standard C1064. Answer: Temperature of Freshly Mixed
Conrete
◉ ASTM Standard C31. Answer: Making and Curing Concrete Test
Specimens in the Field
,◉ [True or False]: The method of determining air content containing
lightweight aggregate is the pressure method. Answer: False (C231 &
C173)
◉ [True or False]: When making a test cylinder from concrete being
used in construction, the field technician must also measure the slump of
the concrete. Answer: True (C31)
◉ While the technician is checking the slump of the concrete, there is a
decided falling away or shearing off of concrete from one side of the
sample. What should the technician do?. Answer: Disregard the test and
retest on another portion of the sample
◉ Preparation of specimens for transport includes. Answer:
Determination that at least 8 hours has elapsed since final set
◉ If the aggregate correction factor for a given source of fine and coarse
aggregate is found to be 0.2% in a pressure air meter, and an air content
value of 5.0% is read on the gauge of the air meter testing that concrete,
what is the correct air content?. Answer: 4.8%
◉ Strength test specimens transported from the field to the testing
laboratory must be:. Answer: Protected from Jarring, moisture loss,
freezing
,◉ Test for slump and air content must be started within How Many
Minutes After Obtaining the Final Portion of the Composite Sample.
Answer: 5 minutes
◉ The minimum size for samples to be used for strength tests is:.
Answer: 1 Cubic Foot [28 Liters]
◉ [True of False]: After a Strike Off of the measure used to determine
density, a small quantity of concrete may be added to correct a
deficiency. Answer: False (C138)
◉ For normal strength concretes, what temperature range must be
maintained for test cylinders during initial curing?. Answer: 60 to 80 deg
F [16 - 27 C]
◉ [True or False]: When the concrete contains large aggregate, the
testing technician should wet-sieve the sample BEFORE making
Density (unit weight) tests for use in Yield Computations. Answer: False
(C172)
◉ What is the minimum amount of concrete cover in all directions
around the temperature sensor when measuring temperature?. Answer: 3
inches [75mm]
, ◉ [True or False]: The sides of the slump mold should be lightly tapped
to consolidate the concrete in the mold. Answer: False (C143)
◉ [True or False]: Unless specified otherwise, strength test specimens
molded from concrete having a slump less than 1 inch [25mm] must be
consolidated by vibration. Answer: True (C31)
◉ [True or False]: Test cylinders may be capped with a thin layer of
portland cement paste which is permitted to harden and cure with the
specimen. Answer: True (C31)
◉ Tamping rod should be (Multiple Choice). Answer: Flat, Tapered,
Pointed OR None of the above
◉ Start molding Strength Test specimens within How Many Minutes
after fabricating the composite sample. Answer: 15 minutes
◉ [True or False]: Representative samples are required for use in tests
conducted for the purpose of determining compliance with the
specifications for concrete quality. Answer: True (C172)
◉ [True or False]: Test method C173 specifies a minimum time
requirement for inverting and agitating the meter to free concrete from
the base. Answer: True - 45 seconds, no more than 5 seconds at a time
GRADE I TEST PAPER 2026 COMPLETE
QUESTIONS WITH CORRECT ANSWERS
◉ ASTM Standard C138. Answer: Density (Unit Weight), Yield and Air
Content (Gravimetric) of Concrete
◉ ASTM Standard C173. Answer: Air Content of Freshly Mixed
Concrete by Volumetric Method
◉ ASTM Standard C231. Answer: Air Content of Freshly Mixed
Concrete by the Pressure Method
◉ ASTM Standard C143. Answer: Slump of Hydraulic-Cement
Concrete
◉ ASTM Standard C1064. Answer: Temperature of Freshly Mixed
Conrete
◉ ASTM Standard C31. Answer: Making and Curing Concrete Test
Specimens in the Field
,◉ [True or False]: The method of determining air content containing
lightweight aggregate is the pressure method. Answer: False (C231 &
C173)
◉ [True or False]: When making a test cylinder from concrete being
used in construction, the field technician must also measure the slump of
the concrete. Answer: True (C31)
◉ While the technician is checking the slump of the concrete, there is a
decided falling away or shearing off of concrete from one side of the
sample. What should the technician do?. Answer: Disregard the test and
retest on another portion of the sample
◉ Preparation of specimens for transport includes. Answer:
Determination that at least 8 hours has elapsed since final set
◉ If the aggregate correction factor for a given source of fine and coarse
aggregate is found to be 0.2% in a pressure air meter, and an air content
value of 5.0% is read on the gauge of the air meter testing that concrete,
what is the correct air content?. Answer: 4.8%
◉ Strength test specimens transported from the field to the testing
laboratory must be:. Answer: Protected from Jarring, moisture loss,
freezing
,◉ Test for slump and air content must be started within How Many
Minutes After Obtaining the Final Portion of the Composite Sample.
Answer: 5 minutes
◉ The minimum size for samples to be used for strength tests is:.
Answer: 1 Cubic Foot [28 Liters]
◉ [True of False]: After a Strike Off of the measure used to determine
density, a small quantity of concrete may be added to correct a
deficiency. Answer: False (C138)
◉ For normal strength concretes, what temperature range must be
maintained for test cylinders during initial curing?. Answer: 60 to 80 deg
F [16 - 27 C]
◉ [True or False]: When the concrete contains large aggregate, the
testing technician should wet-sieve the sample BEFORE making
Density (unit weight) tests for use in Yield Computations. Answer: False
(C172)
◉ What is the minimum amount of concrete cover in all directions
around the temperature sensor when measuring temperature?. Answer: 3
inches [75mm]
, ◉ [True or False]: The sides of the slump mold should be lightly tapped
to consolidate the concrete in the mold. Answer: False (C143)
◉ [True or False]: Unless specified otherwise, strength test specimens
molded from concrete having a slump less than 1 inch [25mm] must be
consolidated by vibration. Answer: True (C31)
◉ [True or False]: Test cylinders may be capped with a thin layer of
portland cement paste which is permitted to harden and cure with the
specimen. Answer: True (C31)
◉ Tamping rod should be (Multiple Choice). Answer: Flat, Tapered,
Pointed OR None of the above
◉ Start molding Strength Test specimens within How Many Minutes
after fabricating the composite sample. Answer: 15 minutes
◉ [True or False]: Representative samples are required for use in tests
conducted for the purpose of determining compliance with the
specifications for concrete quality. Answer: True (C172)
◉ [True or False]: Test method C173 specifies a minimum time
requirement for inverting and agitating the meter to free concrete from
the base. Answer: True - 45 seconds, no more than 5 seconds at a time
