DATE: March 15, 2016
TO: Mayor and City Council
FROM: Director of Public Works
SUBJECT
Title
FY 2016 Pavement Preventative Maintenance & Resurfacing Project: Approval of Plans and Specifications and Call for Bids
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RECOMMENDATION
Recommendation
That Council adopts the attached resolution (Attachment I) approving the plans and specifications for the FY 2016 Pavement Preventative Maintenance & Resurfacing project, calling for bids to be received on April 26, 2016.
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BACKGROUND
The City's Street Preventative Maintenance (PM) & Resurfacing Program involves streets in relatively good condition where the application of the low cost slurry seal treatment is used to prolong the life of the pavement, and protect the city's original investment in rehabilitating or reconstructing the street. The PM treatment reduces the amount of water that can infiltrate the pavement structure, protect the pavement system, and slow the rate of deterioration.
Slurry seal is a mixture of water, asphalt emulsion, aggregate, chemical additives and polymer. The polymer provides better mixture properties. This year staff will be using a special slurry seal called Micro-Surfacing. The primary difference between micro surfacing and the slurry seal used in prior years is in how the emulsions harden. The asphalt emulsion used in micro surfacing contains chemical additives, which allow it to break without relying on the sun or heat for evaporation to occur. Thus, micro surfacing is an application that hardens or cures quicker than ordinary slurry seals. This will allow the street to be returned to traffic use much sooner than using the ordinary slurry seal. The micro-surfacing application will be made after any localized pavement section failure has been repaired.
The PM treatment is typically made every six to seven years after a street has received a new Hot Mix Asphalt Concrete and before the street begins ...
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