Technical Specifications IFB0660-040617
2017 Pavement Preservation
Revised per Addendum #1
Preparation and Placement of Sealant
No crack sealant material shall be applied in wet cracks or where frost, snow or ice is present, or
when the ambient temperature is below 25 degrees F.
The asphalt-fiber compound shall be thoroughly mixed for a minimum of one hour before
application can begin. To ensure a uniform fiber distribution in the sealant, and also to limit
fluctuations in the application temperature of the blended material, the contractor must have a
full melter kettle of sealant mixed, heated to the proper application temperature, and ready for
testing at the start of each work day. Once that batch of sealant is emptied from the melter kettle,
crack sealing operations will cease for the remainder of the day. No new materials will be
allowed to be added to the melter kettle during the work day under any circumstances. Minimum
application temperature shall be 320 degrees F.
Sealant shall be delivered to the pavement cracks through a high pressure hose line and
applicator shoe. Diameter of the applicator shoe is not to exceed 3.5 inches. Once the pavement
cracks are sealed, the width of the sealant on the pavement (overbanding) shall be no greater than
3 inches. When traffic requires immediate use of the roadway, a boiler slag aggregate shall be
broadcast over the cracks to prevent the sealant from being picked up.
All workmanship shall be of the highest quality, and any excess of spilled sealant shall be
removed from the pavement by approved methods and discarded. Any workmanship determined
to be below the high standards of the particular craft involved will not be accepted, and will be
corrected and/or replaced as required by the Owner.
E. PERFORMANCE
Properly formulated and mixed asphalt fiber compound overbanding shall not be greater than
three inches (3”) in width. Penalties will be imposed upon the contractor for overbanding
beyond three inches (3”).
The contractor must submit the following with his bid proposal:
= The trade name of the crack sealant the bidder intends to use.
=" The manufacturer of the crack sealant the bidder intends to use.
The Engineer will require the contractor to successfully perform a 200 foot test strip in the field
prior to commencing work under the contract.
Manufacturer’s certificate of material compliance will be furnished to the Engineer certifying
conformance to the above material specifications, including the following:
" Performance Grade of Modified Asphalt: PG 64-28E (able to withstand
“extremely heavy” traffic loads)
« 7% chemically-modified crumb rubber (CMCR) composed of 100% 80-mesh
recycled tire rubber
« 3-4% specially formulated polymer package
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