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Background
Many Transportation
agencies have formal Pavement Preventive Maintenance Programs. Overall,
these programs have proven very beneficial in preserving the pavement infra-structure.
However, there have been some instances where pavement evaluations prior to
application of preventive treatments have not been thorough enough to select
the most appropriate treatment and/or the window of opportunity for use of
the particular treatment has been missed. Several treatments to consider
in a Preventive Maintenance Program include the following:
Problem
Statement
Many transportation
agency streets and roads, particularly in cities and towns, have severe flexible
pavement problems. This is due to extreme temperatures, environmental
conditions, traffic impacts, and frequent stopping and turning maneuvers.
State and country roads with a low volume of traffic are similarly affected
by extreme environmental conditions, as well as heavy agricultural and mineral
development traffic. Most agencies cannot afford the up front cost of
doing the necessary engineering required to implement technology capable of
mitigating these problems, nor do they have the necessary technical expertise
and equipment.
Implementation
of a Preventative Maintenance program offers significant potential for mitigating
these pavement performance problems. A coordinated, step by step approach
needs to be organized and implemented for such road systems. The potential
cost savings, improvement in service levels and the extension of pavement
service life are great.
Objectives
The objective of this project is to
increase awareness of the need for Preventative Maintenance at the local and
state levels.
Activities include:
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Select experimental pavement sections
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Perform condition survey prior to use of preventative maintenance technique
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Organize the use of preventative maintenance procedures on experimental
sections
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Coordinate post construction condition survey and periodic condition
surveys
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Prepare condition survey and performance reports
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Prepare final reports
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The targeted
benefits from this study are major cost savings at the local and state level
and better service to the traveling public. These are due to the extended
remaining service life of flexible pavements.
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