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CCIL Concrete Study Material UPDATED ACTUAL Exam Questions and CORRECT Answers

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CCIL Concrete Study Material UPDATED ACTUAL Exam Questions and CORRECT Answers At what point should a sample be collected from a truck agitator or mixer? - CORRECT ANSWER - Between the 10% and the 90% points of the discharge What is grab sampling? - CORRECT ANSWER - The operation of securing at one point of the discharge the required volume of representative material in as short a period of time as possible

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CCIL Concrete Study Material UPDATED
ACTUAL Exam Questions and CORRECT
Answers
At what point should a sample be collected from a truck agitator or mixer? - CORRECT
ANSWER - Between the 10% and the 90% points of the discharge



What is grab sampling? - CORRECT ANSWER - The operation of securing at one point of
the discharge the required volume of representative material in as short a period of time as
possible


How much volume of concrete is needed to cast cylinders? - CORRECT ANSWER - 100
mm x 200 mm - 20L. 150 mm x 300 mm - 30L. Beams 150 mm x 150 mm x 535 mm - 55L.


When casting more than 3 cylinders or beams, the minimum required volume of the sample
shall: - CORRECT ANSWER - Be increased by 10%



Can the concrete used for a slump test be reused for other tests? - CORRECT ANSWER -
Yes - provided that it is recombined thoroughly with the whole sample


How long after collecting the sample do you have to transport and remix it? - CORRECT
ANSWER - 10 minutes


Can you use cardboard cylinder molds for concrete over 35 MPa? - CORRECT
ANSWER - No


What are the requirements of molds used for flexural tests (beams)? - CORRECT
ANSWER - Must be 50 mm longer than the length of span prescribed in CSA A23.2-8C.
Must be watertight and made of rigid, non-absorbent material

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