Roles

Corrections and Solutions
When the mechanisms of the efflorescing salts have been established and the source of salts or moisture identified (usually the latter), there comes the problem of making suitable corrections. Such solutions to efflorescenc

BIA Technical Notes
on Brick Construction
Brick Institute of America 1750 Old Meadow Road. McLean. Virginia 22102

INTRODUCTION
EFFLORESCENCE, CAUSES

Efflorescence, as used in this discussion, is a deposit of water-solubl

soluble salts present in many of the units that may make up a wall assembly.



Brick. Because of the composition of the raw materials and the heat treatment used in the process of manufacturing, it is possible for soluble pha

Green Vanadium Stain

Green vanadium stains are caused by water-soluble vanadium salts that are converted to colored, acidic leaching solutions, and are usually the result of washing brickwork with acid-cleaning solutions. Vanadyl chloride, one

BIA Technical Notes
on Brick Construction
Brick Institute of America 1750 Old Meadow Road, Mclean, Virginia 22101
23A
INTRODUCTION
EFFLORESCENCE, PREVENTION AND CONTROL

An understanding of the nature and mechanisms of effl

Technical Notes on Brick & Tile Construction
© STRUCTURAL CLAY PRODUCTS INSTITUTE 1750 OLD MEADOW ROAD, MCLEAN, VIRGINIA 22101 PHONE 703 893-4010

23
REVISED
DEC.
1969

EFFLORESCENCE, CAUSES

INTRODUCTION
Ef

Soluble salts present in many of the units that may make up a wall assembly.

Brick
Because of the composition of the raw materials and the heat treatment used in the process of manufacturing, it is possible for soluble phases to result

Vanadium Stains

The chloride salts of vanadium require highly acidic leaching solutions, and are usually the result of washing brickwork with acid-cleaning solutions. Vanadyl chloride, one of the most prominent types of these stains, forms almos