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CCIL 2-1C Exam Questions and Answers - Sampling Concrete
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CCIL 2-1C Exam Questions and Answers - Sampling Concrete
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CCIL 2-1C - Sampling ConcreteWhen should you grab the sample? - Answer -between 10% to 90% discharge
When does that range not apply? - Answer -If super-plasticizer is going to be added, then take an initial
sample
How many litres do you need to mould 3 100mm x 200mm cylinders? 150mm x 300mm? - Answer -20L
and 30L
When testing for uniformity, when should you obtain samples? - Answer -From three widely separated
points.
You need to obtain, transport, and remix the samples within how long? - Answer -10 minutes
You should place the sample to ensure it's protected from what? - Answer -Sun, wind, and other sources
of rapid evaporation, and contamination
When does concrete need to be sieved? - Answer -When it contains aggregate larger than is appropriate
for the size of the mould, and before remixing.
What information is required in the report? (10 items) - Answer -- Concrete mix I.D.
- Source of the sample (bill no., batch no., plant I.D.)
- Date and time of sampling
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