Efflorescence

This is efflorescence from the concrete in an elementary school gymnasium. It was believed to be mold and was going to be remediated. It is primarily calcium sulfate dihydrate (gypsum). Light scatter makes part of the particle opaque.

Transmitted Off Crossed Circular Polarized Light

Definition/Function:

Efflorescence is a white crust or fibrous growth from cement products or bricks as a result of moisture. It tends to be dominated by sulfates and carbonates of calcium and/or sodium.

Efflorescence

This is efflorescence from the concrete in an elementary school gymnasium. It was believed to be mold and was going to be remediated. It is primarily calcium sulfate dihydrate (gypsum). Light scatter makes part of the particle opaque.

Definition/Function:

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