ACI Concrete Field Testing Technician- Grade I Exam
Questions With 100% Correct Answers
.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. - ANSWER-2
in. [50 mm]
.A composite sample of concrete is required even if the only
purpose for obtaining the sample is to determine temperature.
True of False? - ANSWER-False
.A mallet weighing ____ must be used to tap the sides of the bowl
after rodding each layer. - ANSWER-1.25 +- 0.50 lb. (600 +- 200 g)
.A maximum temperature of freshly mixed concrete is specified in
ASTM C1064. True of False? - ANSWER-False
,.A plastic container can be used for the measure in this method.
True or False? - ANSWER-False, measure must be steel or another
suitable metal
.According to ASTM C1064, what is one reason to take the
temperature of concrete? - ANSWER-Verify conformance to a
specified requirement for temperature of concrete
.After completing the strike-off procedure, what must be done
before weighing the measure and sample? - ANSWER-Clean off
any excess concrete
.After consolidation of the final layer, an excess of concrete ____
above the top of the measure is considered optimum. - ANSWER-
1/8 in. [3 mm]
.After molding test specimens, you should wait two hours before
moving them to the location of initial storage. True or False? -
ANSWER-False; the specimens must be moved immediately
.After rodding each layer, what should be done to the measure
, before adding another layer of concrete? - ANSWER-Tap the sides
of the measure smartly 10 to 15 times with the mallet
.After the final rodding, the sides of the slump mold should should
be tapped lightly with the tamping rod. True or False? - ANSWER-
False
.After the temperature of the concrete is read, what is required? -
ANSWER-Reporting of temperature
.Air meter bowls used for this test must conform to ASTM _____
and be calibrated for volumee according to ASTM _____. -
ANSWER-C231, C29
.ASTM Method gives standardized requirements for _____, _____,
_____, and _____, of test specimens. - ANSWER-Making, curing,
protecting, transporting
.At the end of the procedure, the air meter is _____. - ANSWER-
Disassembled and its contents examined
.Concrete mixtures with specified strengths of 6000 psi [40 MPa]
Questions With 100% Correct Answers
.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. - ANSWER-2
in. [50 mm]
.A composite sample of concrete is required even if the only
purpose for obtaining the sample is to determine temperature.
True of False? - ANSWER-False
.A mallet weighing ____ must be used to tap the sides of the bowl
after rodding each layer. - ANSWER-1.25 +- 0.50 lb. (600 +- 200 g)
.A maximum temperature of freshly mixed concrete is specified in
ASTM C1064. True of False? - ANSWER-False
,.A plastic container can be used for the measure in this method.
True or False? - ANSWER-False, measure must be steel or another
suitable metal
.According to ASTM C1064, what is one reason to take the
temperature of concrete? - ANSWER-Verify conformance to a
specified requirement for temperature of concrete
.After completing the strike-off procedure, what must be done
before weighing the measure and sample? - ANSWER-Clean off
any excess concrete
.After consolidation of the final layer, an excess of concrete ____
above the top of the measure is considered optimum. - ANSWER-
1/8 in. [3 mm]
.After molding test specimens, you should wait two hours before
moving them to the location of initial storage. True or False? -
ANSWER-False; the specimens must be moved immediately
.After rodding each layer, what should be done to the measure
, before adding another layer of concrete? - ANSWER-Tap the sides
of the measure smartly 10 to 15 times with the mallet
.After the final rodding, the sides of the slump mold should should
be tapped lightly with the tamping rod. True or False? - ANSWER-
False
.After the temperature of the concrete is read, what is required? -
ANSWER-Reporting of temperature
.Air meter bowls used for this test must conform to ASTM _____
and be calibrated for volumee according to ASTM _____. -
ANSWER-C231, C29
.ASTM Method gives standardized requirements for _____, _____,
_____, and _____, of test specimens. - ANSWER-Making, curing,
protecting, transporting
.At the end of the procedure, the air meter is _____. - ANSWER-
Disassembled and its contents examined
.Concrete mixtures with specified strengths of 6000 psi [40 MPa]
