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

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What is the length tolerance for tampering rods used in air content tests?

350mm to 450mm

450mm to 600mm

The length tolerance for tampering rods used in air content tests is specified as 450mm to 600mm. This range is essential to ensure consistency and reliability in the testing process. The tampering rod must have an adequate length to effectively compact the concrete sample, facilitating accurate air content measurement. If the rod is too short, it may not adequately reach the bottom of the sample, while a rod that is too long could make it difficult to handle and may inadvertently affect the measurement results. Therefore, the specified length tolerance is designed to optimize the testing procedure, ensuring effective compaction where the air content can be accurately assessed.

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600mm to 750mm

750mm to 900mm

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