CCIL 2-1C - Sampling Concrete
with 100% correct
answers(verified for accuracy)
When 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.)
with 100% correct
answers(verified for accuracy)
When 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.)
