ACI Concrete Field Testing Exam | Questions with
100% Correct Answers | Verified | Latest Update
2026/2027
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Terms in this set (162)
ASTM 172 Describes procedures for obtaining samples of
fresh concrete for plastic properties testing and
casting strength specimens
QA Program Testing performed by the owner, verifies QC
QC Programs Testing performed by the contractor
ASTM 172 includes sampling from Stationary Mixers (central mixers)
Paving and truck mixers
Agitating and non-agitating equipment
Continuous mixers (volumetric)
Composite sample Two or more portions of concrete obtained
generally from the middle portion of the batch
The portions of concrete should be spaced or
timed separating them at equal intervals
If casting strength specimens, need 1 cubic foot or roughly half a wheel barrow
this much concrete
, What must be done when an Wet sieve
aggregate is too large for testing
equipment?
Nominal Maximum Aggregate Size Smallest specified sieve in which 100% of the
material is allowed to pass
Composite sampling time limit Time between the first and final portion of the
composite sample shall not exceed 15 minutes
Cover the sample To protect it from
Sun, wind, contamination and rapid evaporation
Plasticity testing time limit Begin tests for temp, slump and air within 5 minutes
after obtaining the final portion of the composite
sample
Compressive strength testing time Begin casting strength test specimens within 15
limit minutes after fabricating the composite sample
Cylinders
Beams
Prisms
Sampling should normally be on concrete as it is delivered to the project site and
performed after all water and admixtures have been added
Some spec may require sampling from other points
such as the point of discharge of a pump
100% Correct Answers | Verified | Latest Update
2026/2027
Save
Terms in this set (162)
ASTM 172 Describes procedures for obtaining samples of
fresh concrete for plastic properties testing and
casting strength specimens
QA Program Testing performed by the owner, verifies QC
QC Programs Testing performed by the contractor
ASTM 172 includes sampling from Stationary Mixers (central mixers)
Paving and truck mixers
Agitating and non-agitating equipment
Continuous mixers (volumetric)
Composite sample Two or more portions of concrete obtained
generally from the middle portion of the batch
The portions of concrete should be spaced or
timed separating them at equal intervals
If casting strength specimens, need 1 cubic foot or roughly half a wheel barrow
this much concrete
, What must be done when an Wet sieve
aggregate is too large for testing
equipment?
Nominal Maximum Aggregate Size Smallest specified sieve in which 100% of the
material is allowed to pass
Composite sampling time limit Time between the first and final portion of the
composite sample shall not exceed 15 minutes
Cover the sample To protect it from
Sun, wind, contamination and rapid evaporation
Plasticity testing time limit Begin tests for temp, slump and air within 5 minutes
after obtaining the final portion of the composite
sample
Compressive strength testing time Begin casting strength test specimens within 15
limit minutes after fabricating the composite sample
Cylinders
Beams
Prisms
Sampling should normally be on concrete as it is delivered to the project site and
performed after all water and admixtures have been added
Some spec may require sampling from other points
such as the point of discharge of a pump
