Technical Specifications IFB0660-040617
2017 Pavement Preservation
Revised per Addendum #1
materials to be used may be acceptable provided they were made during the same calendar year.
The documentation shall include the individual calibration of each material at various settings,
which can be related to the machine metering devices.
E. WEATHER LIMITATIONS
The material shall be spread only when the road surface and atmospheric temperatures are at
least 45 degrees F and rising, the weather is not rainy, and there is no forecast of temperatures
below 32 degrees F within 48 hours from the time of placement of the mixture.
F. SURFACE PREPARATION
General
The area to be resurfaced shall be thoroughly cleaned of vegetation, loose aggregate and soil,
particularly soil that is bound to the surface. Manholes, valve boxes and other service entrances
will be protected from the surfacing material with polyethylene sheeting. All services will be
uncovered upon completion of work.
Cracks in Surface
If required by the Engineer, pre-treat the cracks in the surface with a fiberized crack sealer prior
to the application of the micro-surfacing. Crack sealer shall be a polymer and crumb rubber
modified asphalt cement including not less than 3% polymers, 7% recycled tire crumb rubber (80
mesh), and 8% polyester fibers (PCRM + fibers). The modified asphalt cement incorporated in
the PCRM + fibers material must meet PG 64-28E MSCR testing requirements.
Tack Coat
The contractor shall be required to apply a tack coat on any heavily oxidized pavements, and on
high traffic roadways as directed by the Engineer. The tack coat shall consist of one part
emulsified asphalt (CSS-1H) and three parts water, and be applied with a distributor at a rate of
0.05-0.10 gallons per square yard.
G. CONSTRUCTION
Stockpile
Precautions shall be taken to insure that aggregate stockpiles do not become contaminated. The
mineral aggregate shall be re-screened prior to being directly loaded onto micro-surfacing
equipment.
General
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