Maintenance and Surface Preparation Activities Prior to Pavement Preservation Treatments (2021) / Chapter Skim
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From page 17... ...
17 Overview To better understand the current pavement maintenance and surface preparation practices that state transportation agencies employ, a survey of practice was developed, pre-tested, revised, and then distributed to each of the 50 state DOT voting members of the AASHTO Committee on Maintenance. The survey materials asked recipients to forward the survey to the appropriate person if the voting member was not the best person to represent and describe the agency's relevant practices.
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18 Maintenance and Surface Preparation Activities Prior to Pavement Preservation Treatments in the bar or pie sections of each of the graphic. If the sum of the responses exceeds N, then the question gave agencies the option to select multiple answers.
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State of the Practice 19 A description of the current state of the practice also necessitated knowledge about how decisions are made within the agencies to implement maintenance and pavement surface preparation strategies prior to preservation treatments. As illustrated in Figure 5, a nearly even split occurred between those agencies that developed the scope of repairs and surface preparation during the scoping session for the pavement preservation project and those agencies that relied on local assessments by each maintenance office and acted on those assessments before the preservation project.
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20 Maintenance and Surface Preparation Activities Prior to Pavement Preservation Treatments that its specification requires crack sealing and filling before any preservation project, but other activities may be scoped ahead of the preservation project. As decisions are made to conduct maintenance and surface preparation, the planned timing of the activities is important to consider.
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State of the Practice 21 that review each project to determine the best approach. In some agencies, maintenance activities are directed locally while surface preparation activities may be guided more by central office policy or design procedures.
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22 Maintenance and Surface Preparation Activities Prior to Pavement Preservation Treatments work for certain types of preservation projects. For example, surface preparation for a mill and inlay preservation project may be financed by federal funds while this might not be the case for a treatment such as a slurry seal.
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State of the Practice 23 Preservation Treatment Installed by Agency Forces As depicted in Figure 11, nearly half of the agencies indicated that in-house forces would conduct surface preparation and maintenance work if they also implemented the final preservation project. Several agencies reported that the question did not apply or that the work would be completed under a different preservation contract.
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24 Maintenance and Surface Preparation Activities Prior to Pavement Preservation Treatments treatment being applied -- or that either option could be used to deliver the work. For example, a few agencies mentioned the method for conducting the crack sealing activity.
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State of the Practice 25 factors that prevented maintenance work or surface preparation, with available budget for the work topping the list. Regardless of whether planned maintenance work or surface preparation is performed, any work that is completed should be captured and incorporated into pavement models and future maintenance planning.
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26 Maintenance and Surface Preparation Activities Prior to Pavement Preservation Treatments that the information in the systems is not always timely. Pavement condition data from the most recent survey may be relatively old, so the maintenance forces may be responding to identified needs while other personnel are planning to make the repairs as part of a preservation contract.
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