What is one potential consequence of improper concrete mixing?

Improper concrete mixing can lead to inconsistent quality and performance, which is a critical concern in construction. When the mixing process is not executed correctly, the proportions of cement, water, aggregates, and admixtures may become unbalanced. This can result in varied characteristics such as lower strength, increased porosity, or reduced workability of the concrete. Consequently, these inconsistencies can affect how the concrete sets, cures, and ultimately performs under load, leading to potential structural failures or a shorter lifespan for the concrete structure.

In contrast, options like increased compressive strength or enhanced durability would imply an improvement, which is not a consequence of improper mixing. Additionally, while a faster setting time could occur due to certain mixing errors or excess water, it does not address the overarching quality and performance issues that stem from incorrect mixing practices.