CCIL EXAM QUESTIONS WITH COMPLETE
SOLUTIONS
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
SOLUTIONS
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
