Which outcome occurs when moisture freezes within porous concrete during rapid cooling?

💡 Explanation

When moisture freezes in porous concrete, ice crystal formation causes volumetric expansion because water expands upon freezing creating internal pressure that exceeds the tensile strength, leading to fracturing. Therefore internal pressure buildup and cracking results, rather than strength increase, heat generation, or reduced chloride resistance which require different hydration/chemical processes.

• Which failure mode results when electrons fill a band at high temperatures in a semiconductor strain gauge?
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• Which outcome occurs when a Josephson junction connecting two superconductors has a thin insulating barrier?