ACI Concrete Strength Testing Technician Test Bank
ACI - Concrete Strength Testing Technician (CSTT)
After a specimen has been ID# , maximum load , fracture pattern , three
tested, record ____#, ____
load, ____ pattern, and age C39, 10.1.1 , 10.1.4 , 10.1.7 & 10.1.9
of specimen. Report
specimen age in days for
____ days or greater.
C39
After testing a beam, across the fracture
measure dimensions ____ at as tested
three points. Depth and 0.05"
width measurements will
be oriented ____. Record C78, 8.1
measurements to the
nearest ____ inch.
Alignment of the 10%
unbonded caps can be
verified after application C39, 8.4.2
of load, up to ____ % of the
final load.
C39
Align the axis of the upper bearing
specimen with the center
of thrust of the ____ block. C39, 8.4
C39
The ____ and ____ bearing upper, lower, steel, hardened
blocks on the machine
shall be ____ with ____ C39, 6.2 & 6.2.1
bearing faces.
C39
These are avoided when a Air voids and excess paste
slight twisting motion is
applied while capping. C617, 6.1
C617
ASTM C39 is limited to 50 lb/ft³ (800 kg/m³)
concrete having a density
in excess of ____ lb/ft³ (____ C39, 1.1
kg/m³).
C39
, ACI Concrete Strength Testing Technician Test Bank
ACI - Concrete Strength Testing Technician (CSTT)
ASTM C1231 contains False
step-by-step procedures
for aligning the specimens C39, 8
in the testing machine
through initial loading.
(T/F)
ASTM C1231 establishes a False
maximum number of pad
reuses that may not be C1231, 1.1
exceeded under any
circumstances. (T/F)
C1231
Average width and depth 0.05" (1 mm)
are recorded to the
nearest ___ inch. C78, 8.1
C78
The ____ bearing face shall upper , 4°
be able to be tilted at
least __ degrees in any C39, 6.2.4.3
direction.
C39
Bearing faces shall be at 3%
least ___ % greater than the
diameter of the specimen. C39, 6.2.2
C39
Bearing faces shall not 0.001" (0.02 mm) , 6" (150 mm)
depart from a plane by
more than ___ inch ( ____ C39, 6.2.3
mm) over any ____ inch ( ____
mm) length.
C39
The bearing surfaces shall 0.01 inch (0.25 mm)
not have gouges, grooves,
protrusions, or C1231, 5.3
indentations greater than
____ inch (mm) deep.
C1231
____ ____ can be made of Capping plates
, ACI Concrete Strength Testing Technician Test Bank
ACI - Concrete Strength Testing Technician (CSTT)
Capping material to be Neat Portland Cement paste
used on freshly molded
cylinders. C617, 6.1
C617
The combination of a an unbonded cap
metal retainer fixture and
an elastomeric pad is ____ . C1231, 5.3
C1231
Compression tests are True
based on the date and
time the specimen was C39, 8.3.1
made unless the specifier
of tests directs otherwise.
(T/F)
C39
Compressive strength 10 psi (0.1 MPa)
should be expressed to
the nearest ____ psi ( ____ C39, 10.1.5
MPa).
C39
Cylinders shall be made in C31 or C192
accordance with ASTM
procedure ____ or ____ . C1231, 6.1
C1231
Depressions in the 0.20" (5 mm)
concrete cylinder shall not
exceed ____ inch (____ mm), C1231, 6.2
with grinding, sawing, or
capping being the
correction.
C1231
Determine the diameter of 0.01" (0.25 mm) , two , right , mid-height
the specimen cross
section for calculation to C39, 7.2
the nearest ___ inch ( ____
mm) by taking ____
measurements at ____
angles at ____ -height.
, ACI Concrete Strength Testing Technician Test Bank
ACI - Concrete Strength Testing Technician (CSTT)
The diameter of the pads ¹⁄₁₆" (2 mm)
shall not be more than ____
inch ( ____ mm) smaller than C1231, 5.2.1
the inside diameter of the
retaining ring.
C1231
Discard the test results in the outside middle third of the span length by
when the fracture occurs MORE than 5% of the span length.
___ .
C78 C78, 9.3
The element of a melting Peripheral Heating
pot that ensures against
accidents during the C617, 4.3.1
reheating of cooled sulfur.
C617
Every ____ months, clean six , curved , spherical
and lubricate the ____
surfaces of the socket and C39, 6.2.4.8
of the ____ portion of the
upper bearing block.
C39
Final centering of the upper
specimen shall be made
with reference to the ____ C39, Note 11
bearing block.
C39
False; apply load for
For both cylinder and
cylinders @ 35 ±7 psi/s (psi per second)
beam specimens, apply
beams @ 125 - 175 psi/min (psi per minute)
load at a rate of pounds
per second (lb/sec). (T/F)
C39, 8.5.1
C39 & C78
C78, 7.4
Forces applied to the perpendicularly
beam will be applied ____
to the face of the C78, 5.2
specimen and applied
without eccentricity.
C78
ACI - Concrete Strength Testing Technician (CSTT)
After a specimen has been ID# , maximum load , fracture pattern , three
tested, record ____#, ____
load, ____ pattern, and age C39, 10.1.1 , 10.1.4 , 10.1.7 & 10.1.9
of specimen. Report
specimen age in days for
____ days or greater.
C39
After testing a beam, across the fracture
measure dimensions ____ at as tested
three points. Depth and 0.05"
width measurements will
be oriented ____. Record C78, 8.1
measurements to the
nearest ____ inch.
Alignment of the 10%
unbonded caps can be
verified after application C39, 8.4.2
of load, up to ____ % of the
final load.
C39
Align the axis of the upper bearing
specimen with the center
of thrust of the ____ block. C39, 8.4
C39
The ____ and ____ bearing upper, lower, steel, hardened
blocks on the machine
shall be ____ with ____ C39, 6.2 & 6.2.1
bearing faces.
C39
These are avoided when a Air voids and excess paste
slight twisting motion is
applied while capping. C617, 6.1
C617
ASTM C39 is limited to 50 lb/ft³ (800 kg/m³)
concrete having a density
in excess of ____ lb/ft³ (____ C39, 1.1
kg/m³).
C39
, ACI Concrete Strength Testing Technician Test Bank
ACI - Concrete Strength Testing Technician (CSTT)
ASTM C1231 contains False
step-by-step procedures
for aligning the specimens C39, 8
in the testing machine
through initial loading.
(T/F)
ASTM C1231 establishes a False
maximum number of pad
reuses that may not be C1231, 1.1
exceeded under any
circumstances. (T/F)
C1231
Average width and depth 0.05" (1 mm)
are recorded to the
nearest ___ inch. C78, 8.1
C78
The ____ bearing face shall upper , 4°
be able to be tilted at
least __ degrees in any C39, 6.2.4.3
direction.
C39
Bearing faces shall be at 3%
least ___ % greater than the
diameter of the specimen. C39, 6.2.2
C39
Bearing faces shall not 0.001" (0.02 mm) , 6" (150 mm)
depart from a plane by
more than ___ inch ( ____ C39, 6.2.3
mm) over any ____ inch ( ____
mm) length.
C39
The bearing surfaces shall 0.01 inch (0.25 mm)
not have gouges, grooves,
protrusions, or C1231, 5.3
indentations greater than
____ inch (mm) deep.
C1231
____ ____ can be made of Capping plates
, ACI Concrete Strength Testing Technician Test Bank
ACI - Concrete Strength Testing Technician (CSTT)
Capping material to be Neat Portland Cement paste
used on freshly molded
cylinders. C617, 6.1
C617
The combination of a an unbonded cap
metal retainer fixture and
an elastomeric pad is ____ . C1231, 5.3
C1231
Compression tests are True
based on the date and
time the specimen was C39, 8.3.1
made unless the specifier
of tests directs otherwise.
(T/F)
C39
Compressive strength 10 psi (0.1 MPa)
should be expressed to
the nearest ____ psi ( ____ C39, 10.1.5
MPa).
C39
Cylinders shall be made in C31 or C192
accordance with ASTM
procedure ____ or ____ . C1231, 6.1
C1231
Depressions in the 0.20" (5 mm)
concrete cylinder shall not
exceed ____ inch (____ mm), C1231, 6.2
with grinding, sawing, or
capping being the
correction.
C1231
Determine the diameter of 0.01" (0.25 mm) , two , right , mid-height
the specimen cross
section for calculation to C39, 7.2
the nearest ___ inch ( ____
mm) by taking ____
measurements at ____
angles at ____ -height.
, ACI Concrete Strength Testing Technician Test Bank
ACI - Concrete Strength Testing Technician (CSTT)
The diameter of the pads ¹⁄₁₆" (2 mm)
shall not be more than ____
inch ( ____ mm) smaller than C1231, 5.2.1
the inside diameter of the
retaining ring.
C1231
Discard the test results in the outside middle third of the span length by
when the fracture occurs MORE than 5% of the span length.
___ .
C78 C78, 9.3
The element of a melting Peripheral Heating
pot that ensures against
accidents during the C617, 4.3.1
reheating of cooled sulfur.
C617
Every ____ months, clean six , curved , spherical
and lubricate the ____
surfaces of the socket and C39, 6.2.4.8
of the ____ portion of the
upper bearing block.
C39
Final centering of the upper
specimen shall be made
with reference to the ____ C39, Note 11
bearing block.
C39
False; apply load for
For both cylinder and
cylinders @ 35 ±7 psi/s (psi per second)
beam specimens, apply
beams @ 125 - 175 psi/min (psi per minute)
load at a rate of pounds
per second (lb/sec). (T/F)
C39, 8.5.1
C39 & C78
C78, 7.4
Forces applied to the perpendicularly
beam will be applied ____
to the face of the C78, 5.2
specimen and applied
without eccentricity.
C78
