KVM International

Ventilation Bit Dispenser

Efflorescence, white areas on product surfaces, has for years been a problem for producers who make slabs and pavers. This is the reason for many complaints from the end-user.

Efflorescence is caused by a combination of circumstances: soluble salts in the material, moisture to dissolve the salts, and vapor transmission or hydrostatic pressure that moves the solution toward the surface. Water in moist, hardened concrete dissolves soluble salts. This salt-water solution migrates to the surface by vapor transmission or hydraulic pressure where the water evaporates, leaving the salt deposit at the...

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