Framework for a Pavement-Maintenance Database System (2016) / Chapter Skim
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5 C H A P T E R 2 The framework for the PMDb system developed under this project was designed to capture the factors that influence the performance of maintenance treatments, including climate conditions, traffic levels, existing pavement conditions, material properties, and workmanship, or the factors pertaining to pavement performance, and establish a common framework that is compatible with the many existing maintenance data collection practices at state DOTs. A review of the existing practices examined the type and scope of activities in pavement maintenance and identified areas where data collection practices exist to populate a national framework.
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6 Framework for a Pavement-Maintenance Database System and SPS-4 studies (Morian, Epps, and Gibson, 1997) , and optimal timing (Peshkin, Hoerner, and Zimmerman, 2004)
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Background on Pavement-Maintenance Practices 7 diamond grinding) applied during the operation.
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8 Framework for a Pavement-Maintenance Database System Table 3. Maintenance treatments for asphalt-surfaced pavements.
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Background on Pavement-Maintenance Practices 9 Concrete-Surface Pavements Concrete-surface pavements are pavements surfaced with concrete, and include jointed plain concrete pavements (JPCP) , jointed reinforced concrete pavements (JRCP)
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10 Framework for a Pavement-Maintenance Database System Composite Pavements Composite pavements are pavement structures consisting of a combination of asphalt and concrete layers. Most commonly these are asphalt overlays of concrete pavements (concrete overlays of asphalt pavements are discussed in the section on concrete pavements)
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Background on Pavement-Maintenance Practices 11 commonly, maintenance activity data is stored centrally within the agency, although many detailed aspects of the maintenance operation, activity, and cost remains decentralized in districts or regional offices. The following sections highlight some of the state DOT practices related to pavement-maintenance data collection.
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12 Framework for a Pavement-Maintenance Database System significant differences in the type of information collected and the level of details reported if the work is done by contract or in-house. Regarding cost data, while reporting a single unit cost may appear to be straightforward, agencies do not use a consistent unit measure for any given treatment.
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Background on Pavement-Maintenance Practices 13 • Anticipated level of service, and • Other project-specific requirements. Many of these factors must be collected in order to make appropriate pavement-maintenance decisions.
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14 Framework for a Pavement-Maintenance Database System Pavement Inventory Terms Pavement is defined as the structure constructed above the existing subgrade soil, typically placed in distinct layers and including compacted/natural subgrade, subbase, base, and the riding surface (Figure 3)
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Background on Pavement-Maintenance Practices 15 used. Levels of service are also frequently used by maintenance.
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16 Framework for a Pavement-Maintenance Database System Integrating Pavement Management and Pavement Maintenance The integration of pavement maintenance into pavement management requires a concentrated effort on the part of transportation agencies to re-evaluate their existing data collection activities, to revise and update performance modeling approaches, and to improve overall program development activities. The desired outcome is that the need for pavement-maintenance treatments, the timing of application, and their performance (and effectiveness)
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