ACI - Concrete Strength Testing Technician (CSTT), Questions and Correct Answers. With Complete Solution.
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ACI
ACI - Concrete Strength Testing Technician (CSTT), Questions and Correct Answers. With Complete Solution.
Standard Practice for Capping Cylindrical Concrete Specimens
ASTM C617
Procedures for capping enable concrete cylinders and cores to meet C617's practice requirements for___ and___.
C617
...
ACI - Concrete Strength Testing Technician
(CSTT), Questions and Correct Answers. With
Complete Solution.
Standard Practice for Capping Cylindrical Concrete Specimens
ASTM C617
Procedures for capping enable concrete cylinders and cores to meet C617's
practice requirements for___ and___.
C617
perpendicularity, planeness
C617, 3.1
____ ____ can be made of glass, machined metal, polished granite, or diabase.
C617
Capping plates
C617, 4.1
Sulfur caps can be formed against ___ or___ plates.
C617
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
0.002 inch (0.05 mm)
C617, 4.1
Device used in conjunction with a capping plate to ensure perpendicularity.
C617
Alignment device
C617, 4.2
Perpendicularity requirement of the axis of a cylindrical specimen is ___° .
C617
0.5°
C617, 4.2
The element of a melting pot that ensures against accidents during the reheating
of cooled sulfur.
C617
, Peripheral Heating
C617, 4.3.1
Temperature of the sulfur mortar pot / materials.
C617
265 - 290°F (130 - 145°C)
C617, 5.4.2
Capping material to be used on freshly molded cylinders.
C617
Neat Portland Cement paste
C617, 6.1
Remove this from the end of cylinders before capping.
C617
oily or waxy materials
C617, 6.2.1
Materials that can be used to cap hardened cement concrete cylinders are ___ ,
___ , ___ .
C617
Neat Portland Cement, Gypsum Cement, Sulfur mortar
C617, 1.1
Plaster of paris is an example of a high-strength plaster. (T/F)
C617
False
C617, Note: 7
Sulfur and gypsum cubes minimum compressive strength is ____ or the cylinder
strength, whichever is greater.
C617
5000 psi
C617, Table 1
Strength of the Neat Cement Paste depends on ___ , ___ , and ___ .
C617
Water cement ratio, time, type of cement
C617, 5.2.1 & Note: 4
These are avoided when a slight twisting motion is applied while capping.
C617
Air voids and excess paste
C617, 6.1
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