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1757 Freezing Water Spalls Bricks - House Exterior - Masonry
1757 Freezing Water Spalls Bricks - House Exterior - Masonry -

Image Text: Cross section > freezing temperatures, saturated brick and a susceptible type of brick are required for spalling to occur > A > ice lens develops > water > B > ice lens absorbs more water and enlarges > water > C > because bricks are poor in tension, the front face cracks off > Note: brick spalling is often a problem with bricks that have a tough glazed finish and a soft permeable core

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