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A contractor discovers that freshly laid brick work shows white deposits on the surface after several days. What is this condition called and what likely caused it?

Correct Answer

A) Efflorescence caused by water-soluble salts

Efflorescence appears as white, chalky deposits on masonry surfaces. It occurs when water-soluble salts in the brick, mortar, or surrounding materials migrate to the surface and crystallize as water evaporates.

Answer Options
A
Efflorescence caused by water-soluble salts
B
Spalling caused by freeze-thaw cycles
C
Crazing caused by rapid drying
D
Scaling caused by chemical attack

Why This Is the Correct Answer

Efflorescence appears as white, chalky deposits on masonry surfaces. It occurs when water-soluble salts in the brick, mortar, or surrounding materials migrate to the surface and crystallize as water evaporates.

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