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Identify the FALSE statement from the following options:

1. The compressive strength of a concrete test specimen can vary depending on its shape and size
2. Air-dried and saturated test specimens show the same compressive strength for concrete
3. Curing conditions, such as temperature and relative humidity, can influence the compressive strength of concrete
4. Compressive strength depends on the water-to-binder ratio used in the concrete mixture

Correct answer: Air-dried and saturated test specimens show the same compressive strength for concrete

Solution

Air-dried and saturated test specimens do not exhibit the same compressive strength because the moisture content significantly affects the concrete's properties; saturated specimens generally demonstrate higher strength due to better hydration of the cement.

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