Canadian Council of Independent Laboratories (CCIL) Practice Exam 2025 – All-in-One Comprehensive Guide to Exam Success!

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Which of the following is NOT a requirement for flexural moulds?

Must be watertight

Must have a specified cross-section variation of 5mm

The requirement regarding the specified cross-section variation of 5mm is not a standard criterion for flexural moulds. Flexural moulds are designed primarily to ensure that the samples are tested under controlled and defined conditions, but they do not typically require a cross-section variation to be maintained within a specific measurement like 5mm.

In contrast, flexural moulds must be watertight to prevent leakage of the concrete mixture during the curing process, they must have a rectangular shape to provide uniform distribution of stress during testing, and they are often coated with mineral oil to facilitate the removal of the hardened sample and to prevent adhesion between the concrete and the mould. Each of these requirements serves a specific purpose in ensuring that the moulds perform effectively during testing and produce reliable results.

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Must be rectangular

Must be coated with mineral oil

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