CCIL EXAM WITH ANSWERS
Sampling from a mixer/truck agitator- Where is sample taken? -
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CORRECT ANSWERS ✔✔Between 10% and 90% (Not when testing
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with Super P)
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How is a sample taken when sampling plastic concrete? - CORRECT
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ANSWERS ✔✔Either pass a receptacle completely through a
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discharge stream OR divert a discharge stream completely into a
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sampling container.
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How many grab samples are needed when testing for uniformity of
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samples? - CORRECT ANSWERS ✔✔3
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What size sample is needed when casting 3 100mm x 200mm
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cylinders? - CORRECT ANSWERS ✔✔Minimum 20L
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What size sample is needed when casting 150mm x 300mm
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cylinders? - CORRECT ANSWERS ✔✔Minimum 30L
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What size sample is needed when casting 150mm x 150mm x
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1
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, 535mm beams? - CORRECT ANSWERS ✔✔Minimum 55L
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How much extra sample is needed when more than 3
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cylinders/specimens are to be cast? - CORRECT ANSWERS
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✔✔Volume of the cylinders/specimens plus 10% extra
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How much time is allowed for obtaining, transporting and remixing
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the sample? - CORRECT ANSWERS ✔✔10 minutes
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A sample contains aggregate larger than that appropriate for the
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size of the moulds or equipment. - CORRECT ANSWERS ✔✔It must
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be wet-sieved prior to testing
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Information required on reports - CORRECT ANSWERS ✔✔Conc |/\ |/\ |/\ |/\ |/\ |/\ |/\
mix no, Sample source, Batch time/date, Sample time/date, Project
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site, Sample location if different, Location of conc in structure,
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Technician name, Lab name/address, Signature of test report
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reviewer, Any deviation from test procedures
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Air Content - CORRECT ANSWERS ✔✔The volume of air voids of
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plastic concrete, exclusive of pore space in aggregate particles,
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determined through observations of the change of air volume in
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2
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, concrete with a change in pressure.
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Slump - CORRECT ANSWERS ✔✔A measure of consistency of
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freshly mixed hydraulic cement concrete, equal to the subsidence,
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measured to the next 5mm, of the moulded substance immediately
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after the removal of the slump cone
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Slump Flow - CORRECT ANSWERS ✔✔The horizontal spread of
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concrete immediately upon removal of the slump cone as a
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measure of the unconfined fluidity of concrete giving a relative
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degree of indication of the degree to which concrete can travel
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How many water-to-cementing materials ratios are needed for
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concrete trial mixes? - CORRECT ANSWERS ✔✔3
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What temperature is considered stable before mixing concrete? -
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CORRECT ANSWERS ✔✔23 C +/- 2 C
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Where should cementing materials be stored? - CORRECT
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ANSWERS ✔✔In a dry place, in moisture-proof containers
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What sieve must cementing materials be passed through before use
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3
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Sampling from a mixer/truck agitator- Where is sample taken? -
|/\ |/\ |/\ |/\ |/\ |/\ |/\ |/\ |/\
CORRECT ANSWERS ✔✔Between 10% and 90% (Not when testing
|/\ |/\ |/\ |/\ |/\ |/\ |/\ |/\ |/\
with Super P)
|/\ |/\ |/\
How is a sample taken when sampling plastic concrete? - CORRECT
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ANSWERS ✔✔Either pass a receptacle completely through a
|/\ |/\ |/\ |/\ |/\ |/\ |/\ |/\
discharge stream OR divert a discharge stream completely into a
|/\ |/\ |/\ |/\ |/\ |/\ |/\ |/\ |/\ |/\
sampling container.
|/\ |/\
How many grab samples are needed when testing for uniformity of
|/\ |/\ |/\ |/\ |/\ |/\ |/\ |/\ |/\ |/\
samples? - CORRECT ANSWERS ✔✔3
|/\ |/\ |/\ |/\ |/\
What size sample is needed when casting 3 100mm x 200mm
|/\ |/\ |/\ |/\ |/\ |/\ |/\ |/\ |/\ |/\
cylinders? - CORRECT ANSWERS ✔✔Minimum 20L
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What size sample is needed when casting 150mm x 300mm
|/\ |/\ |/\ |/\ |/\ |/\ |/\ |/\ |/\
cylinders? - CORRECT ANSWERS ✔✔Minimum 30L
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What size sample is needed when casting 150mm x 150mm x
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1
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, 535mm beams? - CORRECT ANSWERS ✔✔Minimum 55L
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How much extra sample is needed when more than 3
|/\ |/\ |/\ |/\ |/\ |/\ |/\ |/\ |/\
cylinders/specimens are to be cast? - CORRECT ANSWERS
|/\ |/\ |/\ |/\ |/\ |/\ |/\ |/\
✔✔Volume of the cylinders/specimens plus 10% extra
|/\ |/\ |/\ |/\ |/\ |/\ |/\
How much time is allowed for obtaining, transporting and remixing
|/\ |/\ |/\ |/\ |/\ |/\ |/\ |/\ |/\
the sample? - CORRECT ANSWERS ✔✔10 minutes
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A sample contains aggregate larger than that appropriate for the
|/\ |/\ |/\ |/\ |/\ |/\ |/\ |/\ |/\
size of the moulds or equipment. - CORRECT ANSWERS ✔✔It must
|/\ |/\ |/\ |/\ |/\ |/\ |/\ |/\ |/\ |/\ |/\
be wet-sieved prior to testing
|/\ |/\ |/\ |/\ |/\
Information required on reports - CORRECT ANSWERS ✔✔Conc |/\ |/\ |/\ |/\ |/\ |/\ |/\
mix no, Sample source, Batch time/date, Sample time/date, Project
|/\ |/\ |/\ |/\ |/\ |/\ |/\ |/\ |/\
site, Sample location if different, Location of conc in structure,
|/\ |/\ |/\ |/\ |/\ |/\ |/\ |/\ |/\ |/\
Technician name, Lab name/address, Signature of test report
|/\ |/\ |/\ |/\ |/\ |/\ |/\ |/\
reviewer, Any deviation from test procedures
|/\ |/\ |/\ |/\ |/\ |/\
Air Content - CORRECT ANSWERS ✔✔The volume of air voids of
|/\ |/\ |/\ |/\ |/\ |/\ |/\ |/\ |/\ |/\
plastic concrete, exclusive of pore space in aggregate particles,
|/\ |/\ |/\ |/\ |/\ |/\ |/\ |/\ |/\
determined through observations of the change of air volume in
|/\ |/\ |/\ |/\ |/\ |/\ |/\ |/\ |/\ |/\
2
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, concrete with a change in pressure.
|/\ |/\ |/\ |/\ |/\ |/\
Slump - CORRECT ANSWERS ✔✔A measure of consistency of
|/\ |/\ |/\ |/\ |/\ |/\ |/\ |/\
freshly mixed hydraulic cement concrete, equal to the subsidence,
|/\ |/\ |/\ |/\ |/\ |/\ |/\ |/\ |/\
measured to the next 5mm, of the moulded substance immediately
|/\ |/\ |/\ |/\ |/\ |/\ |/\ |/\ |/\ |/\
after the removal of the slump cone
|/\ |/\ |/\ |/\ |/\ |/\ |/\
Slump Flow - CORRECT ANSWERS ✔✔The horizontal spread of
|/\ |/\ |/\ |/\ |/\ |/\ |/\ |/\
concrete immediately upon removal of the slump cone as a
|/\ |/\ |/\ |/\ |/\ |/\ |/\ |/\ |/\ |/\
measure of the unconfined fluidity of concrete giving a relative
|/\ |/\ |/\ |/\ |/\ |/\ |/\ |/\ |/\ |/\
degree of indication of the degree to which concrete can travel
|/\ |/\ |/\ |/\ |/\ |/\ |/\ |/\ |/\ |/\ |/\
How many water-to-cementing materials ratios are needed for
|/\ |/\ |/\ |/\ |/\ |/\ |/\
concrete trial mixes? - CORRECT ANSWERS ✔✔3
|/\ |/\ |/\ |/\ |/\ |/\ |/\
What temperature is considered stable before mixing concrete? -
|/\ |/\ |/\ |/\ |/\ |/\ |/\ |/\
CORRECT ANSWERS ✔✔23 C +/- 2 C
|/\ |/\ |/\ |/\ |/\ |/\ |/\
Where should cementing materials be stored? - CORRECT
|/\ |/\ |/\ |/\ |/\ |/\ |/\
ANSWERS ✔✔In a dry place, in moisture-proof containers
|/\ |/\ |/\ |/\ |/\ |/\ |/\ |/\
What sieve must cementing materials be passed through before use
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3
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