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

Question: 1 / 400

In a slump test, how long should the test be conducted?

1 minute or less

2 minutes or less

In a slump test, the duration of the test is crucial because it allows for proper observation and measurement of the concrete's workability. The slump test typically should be conducted within 2 minutes or less after the concrete is placed into the mold. This time frame is critical to ensure the test accurately reflects the concrete's consistency and flow properties.

If too much time passes before the measurement is taken, the concrete may begin to lose workability due to initial setting, leading to misleading results that do not accurately represent its behavior in practical applications. Maintaining the 2-minute time limit ensures that any changes in workability due to environmental factors or the concrete's hydration process are minimized, thereby providing a reliable assessment of the mixture's performance.

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3 minutes or less

4 minutes or less

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