Cylinders which have been subjected only to field curing conditions prior to testing may be used to assess the quality of the concrete as delivered. OA) True B) False The specified compressive strength of a concrete mixture is 30 MPa. If C-2 is chosen
Cylinders which have been subjected only to field curing conditions prior to testing may be used to assess the quality of the concrete as delivered. OA) True B) False The specified compressive strength of a concrete mixture is 30 MPa. If C-2 is chosen
Chapter2: Loads On Structures
Section: Chapter Questions
Problem 1P
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Transcribed Image Text:Cylinders which have been subjected only to field curing conditions prior to testing
may be used to assess the quality of the concrete as delivered.
OA) True
O B) False
The specified compressive strength of a concrete mixture is 30 MPa. If C-2 is chosen
as the suitable exposure class and no statistical data on previous mixtures are
available, which one of the following would best estimate the required compressive
strength (in MPa) based on the CSA Standard?
O A) 40.5
O B) 36.5
O) 38.5
O D) 32
Which one of the following methods may be used to increase the workability of fresh
concrete?
OA All of the above
B) Adding super plasticizers
C) Using well-graded aggregates
O D) Using rounded aggregates
Determine the exposure class that would be used for concrete in a very severe
environment like that of the Confederation Bridge in Prince Edward Island (PEI) with
high durability performance expectations.
O Al S-1
O B) C-1
OD) F-1
O
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