ACI Concrete Field Testing
Quiz_________________?
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]
Quiz_________________?
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
Quiz_________________?
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)
1
, Quiz_________________?
A maximum temperature of freshly mixed concrete is specified in ASTM C1064. True of
False? -
Answer✅
False
Quiz_________________?
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
Quiz_________________?
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
Quiz_________________?
After completing the strike-off procedure, what must be done before weighing the measure
and sample? -
Answer✅
Clean off any excess concrete
Quiz_________________?
2
, 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]
Quiz_________________?
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
Quiz_________________?
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
Quiz_________________?
After the final rodding, the sides of the slump mold should should be tapped lightly with the
tamping rod. True or False? -
Answer✅
False
Quiz_________________?
After the temperature of the concrete is read, what is required? -
Answer✅
3
, Reporting of temperature
Quiz_________________?
Air meter bowls used for this test must conform to ASTM _____ and be calibrated for
volumee according to ASTM _____. -
Answer✅
C231, C29
Quiz_________________?
ASTM Method gives standardized requirements for _____, _____, _____, and _____, of
test specimens. -
Answer✅
Making, curing, protecting, transporting
Quiz_________________?
At the end of the procedure, the air meter is _____. -
Answer✅
Disassembled and its contents examined
Quiz_________________?
Concrete mixtures with specified strengths of 6000 psi [40 MPa] or greater shall have an
initial curing temperature between __________. -
Answer✅
68 and 78 degrees F [20 and 26 C]
4
Quiz_________________?
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]
Quiz_________________?
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
Quiz_________________?
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)
1
, Quiz_________________?
A maximum temperature of freshly mixed concrete is specified in ASTM C1064. True of
False? -
Answer✅
False
Quiz_________________?
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
Quiz_________________?
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
Quiz_________________?
After completing the strike-off procedure, what must be done before weighing the measure
and sample? -
Answer✅
Clean off any excess concrete
Quiz_________________?
2
, 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]
Quiz_________________?
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
Quiz_________________?
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
Quiz_________________?
After the final rodding, the sides of the slump mold should should be tapped lightly with the
tamping rod. True or False? -
Answer✅
False
Quiz_________________?
After the temperature of the concrete is read, what is required? -
Answer✅
3
, Reporting of temperature
Quiz_________________?
Air meter bowls used for this test must conform to ASTM _____ and be calibrated for
volumee according to ASTM _____. -
Answer✅
C231, C29
Quiz_________________?
ASTM Method gives standardized requirements for _____, _____, _____, and _____, of
test specimens. -
Answer✅
Making, curing, protecting, transporting
Quiz_________________?
At the end of the procedure, the air meter is _____. -
Answer✅
Disassembled and its contents examined
Quiz_________________?
Concrete mixtures with specified strengths of 6000 psi [40 MPa] or greater shall have an
initial curing temperature between __________. -
Answer✅
68 and 78 degrees F [20 and 26 C]
4
