Red Seal Concrete Finisher Practice Exam 2025 – Your All-in-One Guide to Exam Success!

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What are the consequences of excessive water in a concrete mix?

It makes the concrete lighter

It enhances durability and strength

It dilutes strength and increases porosity

Excessive water in a concrete mix can significantly affect its performance and long-term durability. When too much water is added, it leads to a dilution of the cement paste. This dilution adversely affects the hydration process, which is crucial for achieving the desired strength and bonding characteristics of the concrete.

As the water-cement ratio increases, the concrete becomes more porous, making it less dense. This increase in porosity allows for greater water infiltration and potentially leads to issues such as freeze-thaw damage and increased susceptibility to chemical attacks. The end result is a concrete mix that has reduced compressive strength and overall structural integrity.

In summary, the presence of excessive water leads to a weaker concrete that is more prone to deterioration over time, confirming the statement about diluting strength and increasing porosity.

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It has no effect on the structural integrity

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