Details:

Creators:
Marquis, Brian
Corporate Creators:
Maine. Dept. of Transportation. Transportation Research Division
Subject/TRT Terms:
[+]
Pavement Maintenance Preservation Preventive Maintenance Rehabilitation (Maintenance) Service Life Superpave
Publication/ Report Number:
42769
Resource Type:
Tech Report
Geographical Coverage:
Maine
Corporate Publisher:
Maine. Dept. of Transportation
Abstract:
The Maine Department of Transportation (MaineDOT) is responsible for maintaining approximately 8300

miles of public highways. Maintenance of these highways consists of rehabilitation or reconstruction

when the road has deteriorated to an unacceptable level. With economic fluctuations and ever increasing

traffic levels, this policy does not effectively address the needs of the highway system when maintenance

is necessary and creates a backlog of deficient highways.

To reduce this trend, many states have adopted the policy of Pavement Preservation. This policy consists

of applying preventative maintenance to the roadway before it has deteriorated to an undesirable level,

which maintains structural integrity and extends service life of the pavement. Length of time between

costly rehabilitation is increased, reducing the cost of maintaining the highway system. Several states

have reported that they were able to improve the overall condition of their highway system after

implementing this approach and that every dollar spent using preventative maintenance could save up to

six dollars in future spending.

Maine has two types of roads: “A” roads, which are built to state standards and “B” roads, which are not.

Pavement Preventive Maintenance (PPM) can be used effectively on “A” roads to extend service life.

Examples of PPM treatments include Crack Sealing, Hot Maintenance Mulch, Thin Overlays, and Micro-Surfacing. Crack Sealing prevents water and debris from entering cracks in the pavement by sealing them

with a rubberized material. Hot Maintenance Mulch is a hot mix asphalt pavement with little or no

crushed aggregate and is typically used on “B” roads. Thin Overlays are dense - open graded Superpave

mixes, with or without recycled asphalt pavement incorporated into the mix, that are typically used on

“A” roads. Micro-Surfacing is a thin layer of a mixture of polymer-modified asphalt emulsion, mineral

aggregate, mineral filler, and water.

This report will examine the application of Micro-Surfacing to extend the service life of two projects in

Aroostook County.


Format:
PDF
Collection(s):
US Transportation Collection
Main Document Checksum:
[+]
urn:sha256:4a13d96bf3caae746e4a886f836264d6d48564265c53a3ed8e13aeed6ed281c5
Download URL:
https://rosap.ntl.bts.gov/view/dot/28457/dot_28457_DS1.pdf
File Type:

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