Encapsulate contaminated concrete
of pollution can be expensive and technically difficult. Now many state and
local pollution control agencies have found that encapsulating contaminated
concrete is the most economical and long-lasting solution for existing
contamination. 100%-solids epoxy can seal contaminants into the concrete with
layers of 10 to 100 mils thick. In effect, the encapsulation works like an
insect trapped in amber. Solids, gasses, and liquids are all trapped inside a
solid hard capsule. Contaminants can thus be left in place, with no danger to
crews that might have had to work in close proximity to remove them.
It is advisable to choose a white, yellow, or red color for the first coat, or
"seal coat." Subsequent topcoats are a contrasting color like gray or brown. In
this way, workers moving around the contaminated surfaces are alerted when wear
has made re-coating necessary. The contrasting colors thus provide a "wear
100% epoxy has no odor, can go on as thick as needed, and comes in colors as
well as clear. When applying floor seals that can be 20 to 500 mils thick in
repairing and levelling imperfect floor surfaces, it is critical to consider the
height of the coating in addition to the length and width issues of normal
roll-on applications. When water is poured on glass, it protrudes above the
surface at the edges. Pulling a finger though the water, one sees flattening at
the entry and exit points due to its surface tension. When leveling floors,
these same effects of the epoxy's surface tension must be dealt with. In other
words "self-leveling," which is incomplete even for liquids like water, will not
produce a flat top layer of epoxy.
100% epoxy coatings do not shrink and will harden at any height they are left at
after being catalyzed. But special procedures are needed in order to assure a
flat surface while filling uneven anomalies in the substrate. Experience has
determined that using a squeegee-like motion with a very short nap roller
(3/16") creates a pool of epoxy that can be pulled towards you to leak into low
spots while keeping the surface flat. Care must be used to apply an even coat at
the surface, and too much rolling can cause the surface to try to contour along
the floor's imperfections.
A good source of 100% epoxy floor coatings is Durall Industrial Flooring of
Minneapolis, MN. Durall provides customized kits specially constructed to
include every item needed for the specific project of the customer. Durall
delivers these kits directly to the job site and provides factory-direct support
during the application process. Web visitors can obtain free, job-specific
quotes on materials or nationwide turnkey installations by completing a simple
www.concrete-floor-coatings.com/costanalysis.aspx. This full-service concept
allows anyone to enjoy the benefits of industrial strength floors.
For more information, contact Chris Biesanz at
firstname.lastname@example.org or phone 1-800-466-8910 or 952-888-1488
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