CCIL laboratory testing QUESTIONS
WITH ANSWERS
When do lab cured cylinders need to be demolded? - CORRECT
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ANSWERS ✔✔20 +/- 4 hrs after casting time
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When do field cured cylinders need to be demolded? - CORRECT
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ANSWERS ✔✔28 +/- 8 hrs after casting time
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Why can lab cured cylinders be demolded earlier than field cured
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cylinders? - CORRECT ANSWERS ✔✔This is because field cured
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cylinders will need to be transported to a lab so they need the extra
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time to ensure that the cylinders set properly before being moved
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around.
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When are cardboard moulds used? - CORRECT ANSWERS ✔✔For
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concrete <35 MPA
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What temperature should the curing tanks be kept at and how often
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should they be monitered. - CORRECT ANSWERS ✔✔Temp. should
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be at 23 +/- 2 C and temperature recorder should be kept in the
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WITH ANSWERS
When do lab cured cylinders need to be demolded? - CORRECT
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ANSWERS ✔✔20 +/- 4 hrs after casting time
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When do field cured cylinders need to be demolded? - CORRECT
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ANSWERS ✔✔28 +/- 8 hrs after casting time
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Why can lab cured cylinders be demolded earlier than field cured
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cylinders? - CORRECT ANSWERS ✔✔This is because field cured
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cylinders will need to be transported to a lab so they need the extra
|/\ |/\ |/\ |/\ |/\ |/\ |/\ |/\ |/\ |/\ |/\ |/\ |/\ |/\
time to ensure that the cylinders set properly before being moved
|/\ |/\ |/\ |/\ |/\ |/\ |/\ |/\ |/\ |/\ |/\
around.
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When are cardboard moulds used? - CORRECT ANSWERS ✔✔For
|/\ |/\ |/\ |/\ |/\ |/\ |/\ |/\
concrete <35 MPA
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What temperature should the curing tanks be kept at and how often
|/\ |/\ |/\ |/\ |/\ |/\ |/\ |/\ |/\ |/\ |/\
should they be monitered. - CORRECT ANSWERS ✔✔Temp. should
|/\ |/\ |/\ |/\ |/\ |/\ |/\ |/\ |/\
be at 23 +/- 2 C and temperature recorder should be kept in the
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1
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