How to prepare the substrate applied with Curing compounds:
Some of the curing compounds may be of biodegradable and may not be. Curing compounds act as a bond breakers inhibiting subsequent application to bond to the substrate. Therefore, it is necessary to make sure that surface is completely free from residue of curing compound by Bond tape test, Peel-off test method or by Pull-out test method. It is always better to do simple metal wire grinding and proceed further with o doubts at all.
How to prepare the new concrete surface:
Concrete substrates must be solid. Overwatered, frozen or
otherwise weak concrete must be removed mechanically to provide a sound base
and be free of oil, grease, wax, dirt, asphalt, curing and sealing compounds,
latex and gypsum compounds, dust, paint, or any other contaminant which might
act as a bond breaker. Allow the concrete to cure a minimum of 28 days, and
repair any cracks before proceeding further. As drying and shrinkage of green
concrete can results in telegraphing cracks in the subsequent application and
also subsequent application will not bond the substrate because of release of
moisture.
How to prepare the substrate with moisture content more than 5%:
Do not work, allow the entrapped
moisture to release or make some arrangement of heat creating light, fans
etc. Search the passage for the rising
moisture and treat it properly. If any moisture barrier / moisture resistant /
moisture tolerant coating / primer / or floor screed is specified, take the
complete instructions / guarantee / warrantee along with the well trained
applicator for the job and follow complete specification of manufacturer.
How to prepare the existing concrete surface:
Concrete substrates must be solid. Overwatered, frozen or
otherwise weak concrete must be removed mechanically to provide a sound base.
In addition, concrete should be evaluated for moisture, and be free of oil,
grease, wax, dirt, asphalt, curing and sealing compounds, latex and gypsum
compounds, dust, paint, or any other contaminant which might act as a bond
breaker.
How to prepare Sealer applied surface:
Sealers does not react / oxidize / flake off with UV rays, air,
water, stains. Some sealers contain bond-breaking oils, waxes, resins or
rubbers, it is always better to do simple metal wire grinding and proceed
further with o doubts at all.
Should you have any questions on this information, please comment below…
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