"SEAL-IT Defends From Freeze Thaw
Attack"
Time-Tested Performance
Concrete surfaces may be damaged by frost action
either before or aftethe concrete has set. If the temperature
falls below zero before the final set, the expansion of water
while freezing exerts a force sufficient to destroy the cohesion
between particles of the green concrete. The surface of concrete
frozen before the final set has taken place, scales badly and
becomes pitted. The imprint of frost crystals may often be seen
on the broken surface.
Disruption of set concrete by frost is caused by
the expansion of water in the pores during freezing. Pressures are
developed within the material progressively as ice formation continues.
Scaling and cracking occur when the concrete cannot withstand the
stress of the expansion and contraction associated with freeze/thaw.
As liquid changes to ice, there is an expansion
of approximately 9%. When ice changes back to liquid, stress is
released. When salt is added to the equation, the rate of expansion
is doubled.
The use of de-icing salt exceeds 10 million tons
in the US each year on roads, and about 3 million tons in Canada.**
This salt use, increases the expansion rate, thereby increasing
the damage done to concrete surfaces. SEAL-IT Concrete Sealant is
the ideal preventative solution for freeze-thaw damage. SEAL-IT
Concrete Sealant fills the voids and pores in the concrete and provides
an internal seal, which will prevent the moisture penetration, thereby
retarding deterioration, cracking, spalling and other damage caused
from the stress of freeze-thaw conditions.
*ASTM-C-666. Results:
Improved resistance to freeze-thaw damage.
*ASTM-C-666. Using 5% NaCl. Results: Improves resistance to salt
attack during freeze/thaw conditions in presence of
moisture.
Concrete exposed to damp conditions such as road
surfaces, reservoirs and dams, has a greater potential for damage
from frost and freeze-thaw conditions. SEAL-IT can significantly
reduce damage associated with freeze-thaw with their specialized
knowledge and experience.
*Concrete Material and
Practice Fifth Edition
**Salt Institute
Concrete Protection
Whether applied below, on, or above grade, SEAL-IT Concrete Sealant
is highly effective and versatile in a wide range of commercial,
industrial, agricultural, and residential applications, including
sidewalks, curbs, driveways, parking decks, basements, tunnels,
concrete bridges, concrete walls, concrete floors, gunite structures
etc.
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