ACI Field Grade 1 Practice Test | 50 Questions with 100%
Correct Answers | Verified | Latest Update 2024
The temperature measuring device shall be cable of accurately measuring the temperature of
freshly mixed concrete to 1°F throught a range of____________________________. - - 30 - 120°F
It is acceptable to measure the temperature of freshly mixed concrete in the forms provided? -
- The sensor of the temperature measuring device has at least 3 in. of cover in all directions.
Composite samples are required even if the only purpose for obtaining the sample is to determine
temperature. - - False
The temperature measuring device is left in the freshly mixed concrete for at least _______________
but not more than 5 minutes. - - 2 minutes
Test Method C1064/C1064M specifies a maximum temperature of freshly mixed concrete. - -
False
The elapsed time between obtaining the first and final portions of a composite sample shall not
exceed ____________________. - - 15 minutes
Individual samples shall be combined and remixed with a shovel the minimum amount necessary
to ensure uniformity. - - True
The following test must be started within 5 minutes after obtaining the final portion of the
composite sample: - - Slump, Temperature, Air Content
The concrete sample must be protected from? - - Contamination & Evaporation
When strength specimens are to be made, the minimum sample size is __________________. -
- 1.0 ft3
, Portions of the composite should be taken from the _______________of the batch discharge. -
- Middle
A composite sample taken from a paving mixer consists of _______________ individual samples
taken from different portions of the pile. - - Five
The process of removing aggregate larger than a designated size from the fresh concrete by sieving
it on a sieve of the designated size is know as? - - Wet Sieving
The slump test is considered applicable to plastic concrete having a coarse aggregate up to
____________________. - - 1 1/2 in.
The height of the slump mold is_________________. - - 12 inches
The interior surface of the slump mold shall be relatively smooth and free from projections. -
- True
The tamping rod used for the slump test shall have a minimum length of ____________ and a
maximum length of _______________. - - 16 in. & 24 in.
The slump mold is filled in ___________ layers of _______________. - - 3, equal volume
If the concrete subsides below the top of the slump mold while rodding the top layer, the test is
invalid. - - False
Slump is determined by measuring the vertical distance between? - - The top of the mold and
the original displaced center of the top surface of the specimen.
Slump is reported to the nearest? - - 1/4 in.
Correct Answers | Verified | Latest Update 2024
The temperature measuring device shall be cable of accurately measuring the temperature of
freshly mixed concrete to 1°F throught a range of____________________________. - - 30 - 120°F
It is acceptable to measure the temperature of freshly mixed concrete in the forms provided? -
- The sensor of the temperature measuring device has at least 3 in. of cover in all directions.
Composite samples are required even if the only purpose for obtaining the sample is to determine
temperature. - - False
The temperature measuring device is left in the freshly mixed concrete for at least _______________
but not more than 5 minutes. - - 2 minutes
Test Method C1064/C1064M specifies a maximum temperature of freshly mixed concrete. - -
False
The elapsed time between obtaining the first and final portions of a composite sample shall not
exceed ____________________. - - 15 minutes
Individual samples shall be combined and remixed with a shovel the minimum amount necessary
to ensure uniformity. - - True
The following test must be started within 5 minutes after obtaining the final portion of the
composite sample: - - Slump, Temperature, Air Content
The concrete sample must be protected from? - - Contamination & Evaporation
When strength specimens are to be made, the minimum sample size is __________________. -
- 1.0 ft3
, Portions of the composite should be taken from the _______________of the batch discharge. -
- Middle
A composite sample taken from a paving mixer consists of _______________ individual samples
taken from different portions of the pile. - - Five
The process of removing aggregate larger than a designated size from the fresh concrete by sieving
it on a sieve of the designated size is know as? - - Wet Sieving
The slump test is considered applicable to plastic concrete having a coarse aggregate up to
____________________. - - 1 1/2 in.
The height of the slump mold is_________________. - - 12 inches
The interior surface of the slump mold shall be relatively smooth and free from projections. -
- True
The tamping rod used for the slump test shall have a minimum length of ____________ and a
maximum length of _______________. - - 16 in. & 24 in.
The slump mold is filled in ___________ layers of _______________. - - 3, equal volume
If the concrete subsides below the top of the slump mold while rodding the top layer, the test is
invalid. - - False
Slump is determined by measuring the vertical distance between? - - The top of the mold and
the original displaced center of the top surface of the specimen.
Slump is reported to the nearest? - - 1/4 in.
