ACI Test Sample Questions
According to ASTM C138, what is the air content (in percentage) of the following concrete
batch? The theoretical density computed on an air-loose foundation is 168 lb/toes^3 The density
is 158 lb/feet^3 - ANS-6.Zero%= [(168 - 158)/168] x one hundred
After strike off of the degree used to determine density, a small quantity of concrete may be
introduced to correct a deficiency. True or False - ANS-False
ASTM C173 specifies a minimal time requirement for inverting and agitating the meter to free
concrete from the base. True or False - ANS-True
For regular strength concretes, what temperature range have to be maintained for test cylinders
during initial curing? - ANS-60-eighty levels
If the combination correction aspect for a given supply of fine and coarse aggregate is
determined to be .2% in a strain air meter, and an air content material price of five.Zero% is
examine on the gage of the same air meter containing concrete with the same aggregate, what
is the right air content material in %. - ANS-4.Eight
Is it acceptable to fabricate a take a look at specimen from the equal concrete used for the air
content material take a look at. True or False - ANS-False
Preparation of specimens for delivery consists of - ANS-Determination that at least 8 h has
elapsed for the reason that very last set
Representative samples are required for use in assessments conducted for the purpose of
determining compliance with the specs for concrete great. True or False - ANS-True
Start molding power test specimens inside __ after fabricating the composite pattern. - ANS-15
mins
Strength test specimens transported from the sphere to the checking out laboratory have to be -
ANS-Protecting from freezing
Strength check specimens transported from the sector to the checking out laboratory ought to
be - ANS-Protecting from jarring
Strength check specimens transported from the field to the checking out laboratory have to be -
ANS-Protecting from moisture loss
According to ASTM C138, what is the air content (in percentage) of the following concrete
batch? The theoretical density computed on an air-loose foundation is 168 lb/toes^3 The density
is 158 lb/feet^3 - ANS-6.Zero%= [(168 - 158)/168] x one hundred
After strike off of the degree used to determine density, a small quantity of concrete may be
introduced to correct a deficiency. True or False - ANS-False
ASTM C173 specifies a minimal time requirement for inverting and agitating the meter to free
concrete from the base. True or False - ANS-True
For regular strength concretes, what temperature range have to be maintained for test cylinders
during initial curing? - ANS-60-eighty levels
If the combination correction aspect for a given supply of fine and coarse aggregate is
determined to be .2% in a strain air meter, and an air content material price of five.Zero% is
examine on the gage of the same air meter containing concrete with the same aggregate, what
is the right air content material in %. - ANS-4.Eight
Is it acceptable to fabricate a take a look at specimen from the equal concrete used for the air
content material take a look at. True or False - ANS-False
Preparation of specimens for delivery consists of - ANS-Determination that at least 8 h has
elapsed for the reason that very last set
Representative samples are required for use in assessments conducted for the purpose of
determining compliance with the specs for concrete great. True or False - ANS-True
Start molding power test specimens inside __ after fabricating the composite pattern. - ANS-15
mins
Strength test specimens transported from the sphere to the checking out laboratory have to be -
ANS-Protecting from freezing
Strength check specimens transported from the sector to the checking out laboratory ought to
be - ANS-Protecting from jarring
Strength check specimens transported from the field to the checking out laboratory have to be -
ANS-Protecting from moisture loss
