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XYPEX Concentrate is a unique chemical treatment for the
waterproofing and protection of concrete. Manufactured in
the form of a dry powder compound, Xypex consists of Portland
cement, very fine treated silica sand and various active
proprietary chemicals.
When mixed with water and applied as a cementitious coating,
the active chemicals in Xypex cause a catalytic reaction which
generates a non-soluble crystalline formation of
dendritic…fibres within the pores and capillary tracts of
concrete. This process permanently seals the concrete
against the penetration of water or liquids from any direction.
Advantages of XYPEX
Waterproofs underground structures from the
inside against hydrostatic pressure.
By the process
of osmosis and because the chemicals in Xypex have an affinity
with water, the crystalline formation migrates throughout the
pores and capillary tracts of concrete even against strong
hydrostatic pressure.
Protects concrete and reinforcing steel
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The Xypex
treatment is highly resistant to most aggressive substances (pH
3-11 constant contact, pH 2-12 periodic contact). By
preventing the intrusion of chemicals, salt water, sewage and
other harmful materials, Xypex protects concrete and reinforcing
steel from deterioration and oxidation. The concrete is
also protected against spalling, efflorescence, popouts and
other damages caused by weathering, bleeding of the salts and
internal expansion and contraction during the freeze-thaw cycle.
Permits concrete to “breathe’
The Xypex
crystalline formation has “fixed size” air spaces so small that
water molecules cannot pass through. However, it does
allow the passage of air, thus the concrete is able to “breathe”
and become thoroughly dry, preventing water vapor buildup.
Non-toxic
Xypex products have been approved by the U.S. Environmental
Protection Agency, Agriculture Canada, Water Research Council,
NSF International, Mairie de Paris and many other government
health agencies throughout the world for use on concrete
structures that hold potable water or foodstuffs.
Can be applied to moist or “green” concrete
Xypex coatings require moisture to produce the crystalline
formation. Therefore, concrete that is moist or “green” is
ideal for the Xypex treatment. If the concrete is dry, it
must be pre-dampened prior to application.
Some other advantages
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Xypex is not just a coating.
Because the crystalline formation becomes an integral part
of the concrete, Xypex does not rely on its surface coating
to waterproof concrete.
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Xypex will seal hairline
cracks up to 0.4mm (1/64”).
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Xypex does not require costly
surface priming or leveling prior to application.
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Xypex cannot puncture, tear
or come apart at the seams.
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Xypex does not require
protection during backfilling or during placement of steel,
wire mesh or other materials.
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Xypex is less costly to apply
than most other methods.
Typical XYPEX Projects
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