CCIL Certification EXAM Questions And Answers 100% Verified.

CCIL Certification EXAM Questions And Answers 100% Verified. What standard is A23.2-1C? - answerSampling plastic concrete - a test method that specifies the procedures, location, and sample size required to obtain a representative sample of fresh concrete and to assess its traceability to the structure it represents (how to obtain a representative sample of fresh concrete from a truck agitator or mixer At what discharge points should a fresh concrete sample be taken from a truck agitator or truck mixer? - answerBetween the 10% and 90% points of discharge. When should a fresh concrete sample not be taken from the 10% and 90% points of discharge from a truck or agitator? - answer1) When it is required that concrete be tested for slump immediately prior to the addition of superplasticizer 2) When precast concrete is produced in a stationary precast mixer What is a grab sample and when is it used for concrete testing? - answerGrab sampling is the operation of securing at one point of the discharge the required volume of representative material in as short a period of time as possible. To evaluate for quality (strength and corresponding related plastic concrete properties) - single grab sample in specific location To evaluate for uniformity - three grab samples When sampling for uniformity of mixed concrete, how many sample should be taken and where? - answerThree grab samples (not to be formed into a composite sample). Take them from widely separated portions of the batch while the mixer is being completely emptied. When collecting samples for uniformity testing in concrete, how should the mixer be operating? - answer- Discharge the concrete at the normal operating rate for the mixer - Do not obstruct or retard discharge with an incompletely opened gate or seal - Do not allow the mixer to turn in the mixing direction between samples - Do not add water to the batch once sampling has started If you will be casting three 100mm x 200mm cylinders for strength or uniformity testing, how much sample must be collected? - answerA minimum of 20 L of mixed concrete.