CCIL Quiz with Complete Solutions 100% Verified Rated A+ Between what percentages must you sample a concrete truck? - Correct Answer 10% and 90% What is grab sampling? - Correct Answer Securing at one point of the discharge as fast as possible.Tamping rod size for 100 x 200mm cylinders - Correct Answer 10 +/- 1mm in diameter, between 450 mm and 600 mm Minimum sample required for 150 x 300mm cylinder? - Correct Answer 30L How long do you have to obtain, transport and remix sample? - Correct Answer 10 mins Vibration Frequency of internal vibrator - Correct Answer 120Hz Size of internal vibrator. - Correct Answer 20 to40mm in diameter, minimum 50mm in length.weight of mallet. - Correct Answer 0.6 +- 0.3kg strike off bar size - Correct Answer 6mm x 25mm x 450mm Temp of water storage tanks - Correct Answer 23 +/- 2 Water in a storage tank must be saturated with what? - Correct Answer calcium hydroxide minimum moist room humidity - Correct Answer 95% Range of thermometer - Correct Answer 0 to 50 degrees 1 / 2
How often should a temperature recorder take a reading? - Correct Answer 15min How often should temperature recorder be checked to make sure it'd working? - Correct Answer Every 6 months If difference between temp readings is greater than 1c, temp recorder shall be adjusted to within ____ of reference measuring device. - Correct Answer 0.5 C How long after sampling must strength test specimens be completed? (Cylinders) - Correct Answer 20mins How long must cylinders sit on site? - Correct Answer 28+/- 8h If the slump is less than 40, you must use what method of concrete consolidation? - Correct Answer Vibratory How much material can be above the top of a cylinder mould that is 30MpA - Correct Answer 3mm How many insertions per lift with a vibrator on a 100 x 200mm cylinder? - Correct Answer 1 What temp can labratory test specimens be stored at when curing? - Correct Answer 23 +/- 2 C When shall cylinders be removed from the moulds. - Correct Answer 20 +/- 4h While in the mould during initial curing. What temp must cylinders be stored at? - Correct Answer 15 and 25 C The sides of the mould should be tapped ____ times smartly with a mallet - Correct Answer 10 to 15 Number of rods for a 200mm cylinder - Correct Answer 50
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