Technical Specifications 2020 Pavement Preservation
Preparation and Placement of Sealant
The hot-poured sealant shall be maintained in the kettle and applied at the temperature range
specified by the manufacture.
The hot poured sealant shall be applied to the cracks by wand applicator within 2 minutes
following hot-air lance cleaning. The diameter of the applicator shoe is not to exceed 3.5 inches.
All cracks to be treated shall be filled to 1/16” to 1/8” below the pavement surface and have 1.5”
band on either side of the crack with hot-poured sealant with the sealant left slightly concave.
Filling flush, overfilling, and over banding of cracks will not be allowed. Sealant shall tightly
bond to the pavement. The sealant bond to the pavement shall be checked after it had sufficiently
cooled. If the sealant does not bond to the pavement, sealant shall be removed and crack sealing
operations discontinued until debonding problem is corrected.
No hot-air lance cleaning or crack sealing shall be performed when the pavement and cracks are
wet or the ambient temperature is below 50°F.
The contractor must have a full 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 kettle, crack sealing operations will cease for the remainder of the day. No
new materials will be allowed to be added to the kettle during the work day under any
circumstances.
The contents of the kettle shall be emptied at the end of each day and shall not be reused.
The sealant shall be allowed to cool sufficiently to prevent lifting, sticking, and tracking prior to
returning the pavement segment to traffic. 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.
E. PERFORMANCE
The contractor must submit the manufacture and product specifications to the Engineer certifying
conformance to this specification and preform a 200 foot test strip in the field prior to the
commencing work under the contract.
Manufacturer’s certificate of material compliance shall be furnished to the Engineer certifying
conformance to the above material specifications.
D. TRAFFIC CONTROL — Flaggers, Uniformed Officer, & Maintenance of Traffic
Traffic control shall be included in the lump sum price per street.
Page 2 of 3
