CCIL EXAM SCRIPT 2025/2026 QUESTIONS WITH
SOLUTION GRADED A+
✔✔Specimen/Aggregate Size - ✔✔Diameter of a cylindrical specimen, or cross-
sectional dimension of a beam shall be at least 3 times the size of the coarse aggregate
used in the concrete.
✔✔Handpicking - ✔✔Can be used to remove over-sized aggregate before casting
cylinders.
✔✔Cylinder Moulding Location - ✔✔Mould closest to where cylinders will initially cure.
Must stay in cure location for 28 +/- 8 hours.
✔✔Consolidating Test Specimens - ✔✔Rodding used with slump greater than 40,
vibration used with slump equal or less than 40.
✔✔Placing Concrete In Moulds - ✔✔2 or 3 lifts or layers.
✔✔Finishing Mould Surface - ✔✔No depressions larger than 3mm if specified strength
is less than 35 MPa, none larger than 1mm at 35 MPa or greater.
✔✔Finishing Beams - ✔✔Wood float
✔✔Rodding - 100mm cylinder - ✔✔20 strokes/lift
✔✔Rodding - 150mm cylinder - ✔✔25 strokes/lift
✔✔Rodding - 200mm cylinder - ✔✔50 strokes/lift
✔✔Rodding - 250mm cylinder - ✔✔75 strokes/lift
✔✔Self-Consolidating Concrete - ✔✔Place into mould in one lift, slightly overfilling the
top. Tap the outer sides 10 or more times with mallet to close gaps.
✔✔Filling/Vibration Moulds - ✔✔Use 2 equal lifts. Avoid overfilling more than 6mm.
After 2nd layer, add enough concrete to overfill by 3mm and strike off.
✔✔Internal Vibration - 100mm x 200mm - ✔✔1 insertion/lift.
✔✔Internal Vibration - 150mm x 300mm - ✔✔3 insertions. Penetrate til 25mm into
bottom lift.
✔✔When are specimens removed from moulds? - ✔✔20 +/- 4 hrs.
, ✔✔Initial Curing Temperature - ✔✔Between 15 and 25 degrees C.
✔✔Extended Demoulding Time - ✔✔Extended to 76hrs if strength is less than 35MPa.
✔✔How long must you wait before transporting specimens after initial curing? -
✔✔20hrs.
✔✔Flexural Test Specimen Size - ✔✔Length at least 50mm greater than 3 times the
depth formed with long axes horizontal. Ratio of width to depth as moulded should not
exceed 1.5, cross-section should not be less than 150mm x 150mm or 3x the maximum
size of aggregate, whichever is larger.
✔✔Placing concrete - Flexural Test - ✔✔Moulds 200mm or less are filled in 2 equal lifts.
More than 200mm= 3 equal lifts.
✔✔Rodding Flex Specimens - ✔✔Once for every 10cm squared or area. Rod upper
layer so strokes penetrate 25mm into layer below. Slightly overfill top layer.
✔✔Flexural Specimens - Internal Vibration - ✔✔Intervals not exceeding 150mm along
the centreline of the long dimension of the specimen. Wider than 150mm, use
alternating insertions along 2 lines.
✔✔How long do flexural test specimens initially cure before demoulding? - ✔✔48 +/- 4
hrs. Store in lime water (23 +/- 2 degrees C) for 24 +/- 4 hrs before testing.
✔✔Tampering Rod Dimensions for Air Content Test - ✔✔16mm +/- 1mm Diameter,
between 450mm and 600mm length. One end must have a hemispherical tip.
✔✔Measuring Bowl - ✔✔Sufficiently rigid to limit expansion to 0.1% of scale reading at
operating pressure. 7L bowl maximum aggregate size of 40mm, 15L bowl maximum
aggregate size of 56mm.
✔✔Air Guage Dial - ✔✔Permits direct reading to a minimum of 0.2% for air volumes in
the usual range of 0-8%.
✔✔Calibration Cylinder - ✔✔Volume in the range of 1-6% of the volume of the base
container.
✔✔Air Meter Readings - ✔✔Are to the nearest 0.1%.
✔✔How long do you have to conduct your air test from collecting your sample? - ✔✔10
minutes.
✔✔Air Meter Rodding - ✔✔15L - 25 strokes. Greater than 15L - 50 strokes.
SOLUTION GRADED A+
✔✔Specimen/Aggregate Size - ✔✔Diameter of a cylindrical specimen, or cross-
sectional dimension of a beam shall be at least 3 times the size of the coarse aggregate
used in the concrete.
✔✔Handpicking - ✔✔Can be used to remove over-sized aggregate before casting
cylinders.
✔✔Cylinder Moulding Location - ✔✔Mould closest to where cylinders will initially cure.
Must stay in cure location for 28 +/- 8 hours.
✔✔Consolidating Test Specimens - ✔✔Rodding used with slump greater than 40,
vibration used with slump equal or less than 40.
✔✔Placing Concrete In Moulds - ✔✔2 or 3 lifts or layers.
✔✔Finishing Mould Surface - ✔✔No depressions larger than 3mm if specified strength
is less than 35 MPa, none larger than 1mm at 35 MPa or greater.
✔✔Finishing Beams - ✔✔Wood float
✔✔Rodding - 100mm cylinder - ✔✔20 strokes/lift
✔✔Rodding - 150mm cylinder - ✔✔25 strokes/lift
✔✔Rodding - 200mm cylinder - ✔✔50 strokes/lift
✔✔Rodding - 250mm cylinder - ✔✔75 strokes/lift
✔✔Self-Consolidating Concrete - ✔✔Place into mould in one lift, slightly overfilling the
top. Tap the outer sides 10 or more times with mallet to close gaps.
✔✔Filling/Vibration Moulds - ✔✔Use 2 equal lifts. Avoid overfilling more than 6mm.
After 2nd layer, add enough concrete to overfill by 3mm and strike off.
✔✔Internal Vibration - 100mm x 200mm - ✔✔1 insertion/lift.
✔✔Internal Vibration - 150mm x 300mm - ✔✔3 insertions. Penetrate til 25mm into
bottom lift.
✔✔When are specimens removed from moulds? - ✔✔20 +/- 4 hrs.
, ✔✔Initial Curing Temperature - ✔✔Between 15 and 25 degrees C.
✔✔Extended Demoulding Time - ✔✔Extended to 76hrs if strength is less than 35MPa.
✔✔How long must you wait before transporting specimens after initial curing? -
✔✔20hrs.
✔✔Flexural Test Specimen Size - ✔✔Length at least 50mm greater than 3 times the
depth formed with long axes horizontal. Ratio of width to depth as moulded should not
exceed 1.5, cross-section should not be less than 150mm x 150mm or 3x the maximum
size of aggregate, whichever is larger.
✔✔Placing concrete - Flexural Test - ✔✔Moulds 200mm or less are filled in 2 equal lifts.
More than 200mm= 3 equal lifts.
✔✔Rodding Flex Specimens - ✔✔Once for every 10cm squared or area. Rod upper
layer so strokes penetrate 25mm into layer below. Slightly overfill top layer.
✔✔Flexural Specimens - Internal Vibration - ✔✔Intervals not exceeding 150mm along
the centreline of the long dimension of the specimen. Wider than 150mm, use
alternating insertions along 2 lines.
✔✔How long do flexural test specimens initially cure before demoulding? - ✔✔48 +/- 4
hrs. Store in lime water (23 +/- 2 degrees C) for 24 +/- 4 hrs before testing.
✔✔Tampering Rod Dimensions for Air Content Test - ✔✔16mm +/- 1mm Diameter,
between 450mm and 600mm length. One end must have a hemispherical tip.
✔✔Measuring Bowl - ✔✔Sufficiently rigid to limit expansion to 0.1% of scale reading at
operating pressure. 7L bowl maximum aggregate size of 40mm, 15L bowl maximum
aggregate size of 56mm.
✔✔Air Guage Dial - ✔✔Permits direct reading to a minimum of 0.2% for air volumes in
the usual range of 0-8%.
✔✔Calibration Cylinder - ✔✔Volume in the range of 1-6% of the volume of the base
container.
✔✔Air Meter Readings - ✔✔Are to the nearest 0.1%.
✔✔How long do you have to conduct your air test from collecting your sample? - ✔✔10
minutes.
✔✔Air Meter Rodding - ✔✔15L - 25 strokes. Greater than 15L - 50 strokes.
