Canadian Council of Independent Laboratories (CCIL) Practice Exam 2026 – All-in-One Comprehensive Guide to Exam Success!

The accuracy of the slump flow test results can be influenced by a variety of factors, and each of the options provided plays a role in potential inaccuracies.

Using a smaller cone may lead to variations in the spread of the sample due to changes in the geometry and the amount of concrete tested. A smaller cone could restrict the flow differently than the standard cone, thereby affecting the measurement of the slump flow.

Variability in sample temperature can significantly impact the workability of concrete. If the temperature of the concrete mixture differs from expected ranges, it may result in variations in viscosity and flow behavior, thus altering the slump flow readings.

Timing the test incorrectly, such as starting or stopping the measurement outside of recommended intervals, can lead to inaccurate results as the concrete mixture may continue to change in workability after the initial mixing.

Considering all these factors, it is clear that a combination of these conditions can collectively influence the outcome of the slump flow test, which is why recognizing that all the listed factors can affect the accuracy of the test results is essential.