HEM - mortar
AS A PROTECTOR OF STEEL STRUCTURES
Concrete is a good protector against
corrosion
BECAUSE
- it is strong and durable.
- hydrated cement inhibits corrosion.
- there is adhesion between concrete and steel.
- water pH inside the moist concrete equals 12-12.5.
- coefficients of the thermal expansion of concrete and steel are almost equal.
HOWEVER
We do not use concrete as a protective coating for steel structures
BECAUSE
It is almost impossible for concrete to preserve the above-mentioned qualities, once it is sprayed onto the steel surface.
BUT, WE CAN USE HEM-mortar
BECAUSE
- it is pourable, sprayable and brushable.
- it possesses all the qualities necessary to protect steel from corrosion!
The following example clearly demonstrates the protective qualities of
HEM-mortar:
The moistened sample. The products of corrosion cover the unprotected
surface.
The sample before breaking up of protector.
The products of corrosion do not penetrate the steel surface coated with HEM-mortar.
The protective coatings made of HEM-mortar are not destroyed by the
freezing and thawing tests even after 325
cycles (thawing in fresh
water).
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