Industrial Maintenance Technician Practice Test 2025 – 400 Free Practice Questions to Pass the Exam

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What happens if freshly poured concrete is exposed to freezing temperatures for several hours?

It hardens more quickly

It has a chance of being permanently damaged

When freshly poured concrete is exposed to freezing temperatures for several hours, it has a chance of being permanently damaged. This is due to the fact that concrete needs to cure properly to achieve its intended strength and durability. Curing involves hydration, a chemical reaction between the water and cement particles. If the temperature drops below freezing, it can impede this process and lead to the formation of ice within the concrete mix.

The formation of ice disrupts the hydration process, preventing the concrete from developing adequate strength. In severe cases, the expansion of frozen water can cause cracking and scaling, which compromises the integrity of the concrete. Once damaged by freezing, the concrete may not be able to reach its full strength potential, leading to long-term issues such as reduced durability and increased maintenance costs.

Understanding these effects highlights the importance of ensuring that concrete is protected from freezing conditions during its initial setting and curing phases.

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It will dry out faster

It becomes easier to work with

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