Exam (elaborations)
CCIL Exam Questions and Answers.
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CCIL Exam Questions and Answers.
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CCIL Exam Questions andAnswers
Sampling from a mixer/truck agitator - answer Sample taken
between 10% and 90%, except when testing with Super P
Sampling plastic concrete - answer Pass receptacle through
discharge stream or divert stream into sampling container
Grab samples for uniformity testing - answer 3 grab samples
required
Sample size for casting 3 100mm x 200mm cylinders - answer
Minimum 20L sample size needed
Sample size for casting 150mm x 300mm cylinders - answer
Minimum 30L sample size needed
Sample size for casting 150mm x 150mm x 535mm beams - answer
Minimum 55L sample size needed
Extra sample for more than 3 cylinders/specimens - answer Volume
of cylinders/specimens plus 10% extra needed
Time for obtaining, transporting, and remixing sample - answer
Allowed 10 minutes for the process
Aggregate larger than appropriate - answer Must be wet-sieved
before testing
, Information required on reports - answer Includes conc mix no,
sample details, project info, technician, and deviations
Air Content in concrete - answer Volume of air voids in plastic
concrete, excluding pore space in aggregate
Slump in concrete - answer Measure of consistency post-removal of
slump cone, indicating subsidence
Slump Flow in concrete - answer Horizontal spread post-removal of
slump cone, indicating fluidity
Water-to-cementing materials ratios - answer 3 ratios needed for
concrete trial mixes
Stable temperature before mixing concrete - answer 23 C +/- 2 C
considered stable
Storage of cementing materials - answer In dry, moisture-proof
containers
Surface moisture in aggregate - answer Sample size of 500g-1000g
for obtaining surface moisture
Mixing concrete time - answer Mix 3 mins, rest 3 mins, mix 2 mins
Re-usable sample for casting cylinders - answer Slump or slump
flow sample, NOT air, must be remixed first
Cylinder mould requirements - answer Nonabsorbent, rigid, coated
with mineral oil
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