asked 98.2k views
5 votes
Efflorescence that appears on the surface of a wall of brick, stone, or concrete masonry can be caused by

asked
User Dispake
by
7.7k points

1 Answer

2 votes
It can be caused by the humid air or surrounding.
Humid air makes the stones absorb water and therfore makes it soft.
answered
User SaplingPro
by
8.2k points
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