What is NUVO?
Nuvo Hot Pour Crack Sealants have been formulated with customer satisfaction and superior performance in mind. Every step of the way, we put ease of use and overall value at the forefront of our efforts. With the addition of PolySkin Packaging, intelibond technology, superior crack penetration, quick setup times, wide application temperature ranges and fast melt times, Nuvo Brand sealants address the needs of our customers as well as the industry standards. With such a high level of performance, longevity and ease of use, Nuvo sealants have set a new standard of quality and value in the crack seal industry.
Nuvo™ Elite Application Instructions
Description:
Nuvo™ Sealants are high quality, single component, hot applied joint and
crack sealants formulated with the latest sealant technologies. These sealants
are supplied in a solid state and are self-leveling at application temperatures.
When properly applied according to the manufacturer’s recommendations,
the in-place sealant forms a resilient and adhesive bond that seals joints and
cracks against the intrusion of water and foreign materials reducing pavement
and sub-base deterioration.
Melting:
Nuvo EliteTM may be melted using a direct-fired melting unit or a melter with
an indirect heating system. The melter should be equipped with an agitator
and the sealant should be agitated regularly during both the melting process
and the pouring process. CAUTION: The agitator should be stopped when
loading blocks of sealant into the melter to avoid splashing hot sealant on
the operator.
Application Temperatures:
Application Temperature 380o F
Safe Heating Temperature 400o F
Pavement Temperatures:
At the time of placing sealant, the pavement temperature should be a
minimum of 40°F. Application at lower temperatures may result in less
adhesion due to the possible presence of excess moisture. If the surface
temperature is less than 40°F, and the sealant must be applied (asphalt
pavements only), a heat lance or other appropriate means can be used to
warm and dry the asphalt crack. If it is necessary to apply the sealant at lower
than 40°F, care should be taken to insure the cracks are clean and dry and that
the necessary adhesion is obtained.
Asphalt Crack Preparation:
Cracks should be opened to a minimum width of 3/8 inch, which is necessary
to provide an adequate reservoir for the sealant, allowing for expansion and
contraction of the surface and crack. A variety of equipment including routers,
random crack saws, and power brushes can be used to open up and clean
cracks. Care should be taken to insure that bonding surfaces are free from
oil, dirt, dust, moisture and any other contaminants that would inhibit good
bonding of the sealant to the asphalt. All weeds should be removed and cracks
sterilized, if necessary, to prevent weed growth through the sealant. The above
specifications should be viewed as a guideline and may be modified according
to specific project specifications.
In areas that do not have a build-up of oil, dirt or other residue, preparation
may be accomplished by using high-powered, oil-free compressed air or a heat
lance. When using a heat lance, care should be taken that the asphalt is not
overheated, causing a separation of the asphalt and aggregate.
Concrete Joint Preparation:
Concrete joints shall be sawn, sandblasted or water blasted on each side
of the bonding surface to remove all foreign material and moisture. On old
construction, all of the old joint sealant should be removed by sawing, plowing
or other means acceptable to the project engineer. The joints and cracks must
be free of water, dust, residue and any other contamination.
A closed cell, non-absorbing, heat resistant bond breaker, at least 1/8 inch
larger in diameter than the joint width shall be installed. The bond breaker
should be placed such that a recess of at least 1/8 inch shall exist below
the surface of the concrete after installation of the sealant or as specified
by the joint design. Oil-free compressed air shall be used to clean the joint
immediately prior to sealant installation.
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