Canadian Council of Independent Laboratories (CCIL) Practice Exam 2025 – 400 Free Practice Questions to Pass the Exam

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What must be done to reused samples before casting cylinders?

Leave them to sit for a day

Remix into the batch

When working with reused samples, remixed into the batch is the appropriate step to ensure consistency and homogeneity in the resulting material. This process of remixing helps to distribute any variations in the sample composition that may have occurred during storage or transportation, thus maintaining the quality and reliability of the test results when casting cylinders.

Leaving the samples to sit for a day may not address any discrepancies in the sample mixture and could lead to separation of components. Cooling them down is typically not a relevant step in preparing concrete or similar materials for testing, and adding more water could alter the intended ratios of the mix, potentially compromising the integrity of the samples and affecting the test outcomes. Therefore, remixing the reused samples into the batch is crucial for accuracy and representativeness in testing.

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Cool them down

Add more water

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