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CCIL EXAM | QUESTIONS & 100% CORRECT ANSWERS (VERIFIED) | LATEST UPDATE | GRADEA+ $11.49   Add to cart

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CCIL EXAM | QUESTIONS & 100% CORRECT ANSWERS (VERIFIED) | LATEST UPDATE | GRADEA+

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  • CCIL CONCRETE
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  • CCIL CONCRETE

CCIL EXAM | QUESTIONS & 100% CORRECT ANSWERS (VERIFIED) | LATEST UPDATE | GRADEA+ Sampling from a mixer/truck agitator- Where is sample taken? Correct Answer: Between 10% and 90% (Not when testing with Super P) How is a sample taken when sampling plastic concrete? Correct Answer: Either pa...

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  • March 20, 2024
  • 17
  • 2023/2024
  • Exam (elaborations)
  • Questions & answers
  • CCIL CONCRETE
  • CCIL CONCRETE
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CCIL EXAM | QUESTIONS & 100%
CORRECT ANSWERS (VERIFIED) | LATEST
UPDATE | GRADE A+



Sampling from a mixer/truck agitator- Where is sample taken?

Correct Answer: Between 10% and 90% (Not when testing with Super P)



How is a sample taken when sampling plastic concrete?

Correct Answer: 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 Answer: 3



What size sample is needed when casting 3 100mm x 200mm cylinders?

Correct Answer: Minimum 20L



What size sample is needed when casting 150mm x 300mm cylinders?

Correct Answer: Minimum 30L



What size sample is needed when casting 150mm x 150mm x 535mm beams?

,Correct Answer: Minimum 55L



How much extra sample is needed when more than 3 cylinders/specimens are to be

cast?

Correct Answer: Volume of the cylinders/specimens plus 10% extra



How much time is allowed for obtaining, transporting and remixing the sample?

Correct Answer: 10 minutes



A sample contains aggregate larger than that appropriate for the size of the moulds or

equipment.

Correct Answer: It must be wet-sieved prior to testing



Information required on reports

Correct Answer: 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 Answer: 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

concrete with a change in pressure.

, Slump

Correct Answer: 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 Answer: 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 Answer: 3



What temperature is considered stable before mixing concrete?

Correct Answer: 23 C +/- 2 C



Where should cementing materials be stored?

Correct Answer: In a dry place, in moisture-proof containers



What sieve must cementing materials be passed through before use to reject lumps?

Correct Answer: 1.25mm or finer

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