ACI - Concrete Strength Testing
Technician (CSTT)20
Standard Practice for Capping Cylindrical Concrete Specimens - ANSWERS-ASTM C617
Procedures for capping enable concrete cylinders and cores to meet C617's practice
requirements for___ and___.
C617 - ANSWERS-perpendicularity, planeness
C617, 3.1
____ ____ can be made of glass, machined metal, polished granite, or diabase.
C617 - ANSWERS-Capping plates
C617, 4.1
Sulfur caps can be formed against ___ or___ plates.
C617 - ANSWERS-metal, stone
C617, 4.1
The working surface of a capping plate shall not depart from a plane by more than ___ inch
( ___ mm) in 6 inches (150 mm).
C617 - ANSWERS-0.002 inch (0.05 mm)
,C617, 4.1
Device used in conjunction with a capping plate to ensure perpendicularity.
C617 - ANSWERS-Alignment device
C617, 4.2
Perpendicularity requirement of the axis of a cylindrical specimen is ___° .
C617 - ANSWERS-0.5°
C617, 4.2
The element of a melting pot that ensures against accidents during the reheating of cooled
sulfur.
C617 - ANSWERS-Peripheral Heating
C617, 4.3.1
Temperature of the sulfur mortar pot / materials.
C617 - ANSWERS-265 - 290°F (130 - 145°C)
C617, 5.4.2
Capping material to be used on freshly molded cylinders.
C617 - ANSWERS-Neat Portland Cement paste
, C617, 6.1
Remove this from the end of cylinders before capping.
C617 - ANSWERS-oily or waxy materials
C617, 6.2.1
Materials that can be used to cap hardened cement concrete cylinders are ___ , ___ , ___ .
C617 - ANSWERS-Neat Portland Cement, Gypsum Cement, Sulfur mortar
C617, 1.1
Plaster of paris is an example of a high-strength plaster. (T/F)
C617 - ANSWERS-False
C617, Note: 7
Sulfur and gypsum cubes minimum compressive strength is ____ or the cylinder strength,
whichever is greater.
C617 - ANSWERS-5000 psi
C617, Table 1
Strength of the Neat Cement Paste depends on ___ , ___ , and ___ .
C617 - ANSWERS-Water cement ratio, time, type of cement
Technician (CSTT)20
Standard Practice for Capping Cylindrical Concrete Specimens - ANSWERS-ASTM C617
Procedures for capping enable concrete cylinders and cores to meet C617's practice
requirements for___ and___.
C617 - ANSWERS-perpendicularity, planeness
C617, 3.1
____ ____ can be made of glass, machined metal, polished granite, or diabase.
C617 - ANSWERS-Capping plates
C617, 4.1
Sulfur caps can be formed against ___ or___ plates.
C617 - ANSWERS-metal, stone
C617, 4.1
The working surface of a capping plate shall not depart from a plane by more than ___ inch
( ___ mm) in 6 inches (150 mm).
C617 - ANSWERS-0.002 inch (0.05 mm)
,C617, 4.1
Device used in conjunction with a capping plate to ensure perpendicularity.
C617 - ANSWERS-Alignment device
C617, 4.2
Perpendicularity requirement of the axis of a cylindrical specimen is ___° .
C617 - ANSWERS-0.5°
C617, 4.2
The element of a melting pot that ensures against accidents during the reheating of cooled
sulfur.
C617 - ANSWERS-Peripheral Heating
C617, 4.3.1
Temperature of the sulfur mortar pot / materials.
C617 - ANSWERS-265 - 290°F (130 - 145°C)
C617, 5.4.2
Capping material to be used on freshly molded cylinders.
C617 - ANSWERS-Neat Portland Cement paste
, C617, 6.1
Remove this from the end of cylinders before capping.
C617 - ANSWERS-oily or waxy materials
C617, 6.2.1
Materials that can be used to cap hardened cement concrete cylinders are ___ , ___ , ___ .
C617 - ANSWERS-Neat Portland Cement, Gypsum Cement, Sulfur mortar
C617, 1.1
Plaster of paris is an example of a high-strength plaster. (T/F)
C617 - ANSWERS-False
C617, Note: 7
Sulfur and gypsum cubes minimum compressive strength is ____ or the cylinder strength,
whichever is greater.
C617 - ANSWERS-5000 psi
C617, Table 1
Strength of the Neat Cement Paste depends on ___ , ___ , and ___ .
C617 - ANSWERS-Water cement ratio, time, type of cement
