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5 CHAPTER ONE INTRODUCTION This report describes the results of ACRP Project 11-03, E-C127: Implementation of an Airport Pavement Manage- S09-02, Common Airport Pavement Maintenance Practices. ment System (Tighe and Covalt 2008); Unified Facilities Cri- The objective of the synthesis is to provide information for teria on Pavement Maintenance Management (2008); Mod- airport managers and engineers on how airports implement ern Pavement Management (Hass et al. 1994); Pavement airport pavement maintenance systems (APMSs), including Management for Airports, Roads, and Parking Lots (Shahin inspection and tracking pavement condition, scheduling 1994); and the AASHTO Pavement Management Guide maintenance and rehabilitation (M&R), identifying neces- (2001). The FHWA Pavement Preservation Compendium II sary funds and treating distresses in asphalt concrete (AC) (2006) describes many practical aspects of preventive main- and portland cement concrete (PCC). tenance applied to highway pavements. The activities included for cost-effective preservation of PURPOSE airport pavements can be divided into two broad stages. The first stage includes identification and selection of future M&R There is a large amount of information available on pave- treatments and projects considering the needs of all airport ment maintenance; however, the information is dispersed pavements. The objective of the first stage is to develop a and not always current. The specific objectives of the syn- budget for a Capital Improvement Program (CIP) or for a sim- thesis include: ilar infrastructure preservation program. The second stage involves the design and construction of the M&R treatments · Documenting current pavement maintenance practices; for specific pavement sections identified during the first stage. · Synthesizing relevant information by comparing, eval- uating, and prioritizing it; and In the context of pavement management, the first stage · Identifying ongoing and recently completed research in activities represent the network-level management and the sec- the area of airport pavement maintenance programs and ond stage activities the project-level management. Although treatments. both pavement management stages are described in the syn- thesis, the emphasis is on the network-level activities (how to Pavement maintenance as discussed in this synthesis select the right M&R treatments for the right pavements) includes both maintenance treatments such as crack sealing rather than on materials and construction methods used for and rehabilitation treatments such as overlays. All types of pavement preservation (how to design and build the right treat- M&R treatments are needed for cost-effective preservation of ment). The reasons for emphasizing network-level activities airport pavements. The synthesis describes pavement M&R rather than project-level activities include: practices for AC and PCC pavements; however, such prac- tices for surface-treated and aggregate-surfaced pavements · Activities carried out at the network level, such as a sys- are not included. tematic and objective assessment of pavement network condition, have universal applicability, whereas project- level activities often depend on airport-specific and site- BACKGROUND specific conditions. · Some maintenance treatments, such as microsurfacing Airport pavement maintenance practices generally follow the and slurry seals, are constructed according to industry- objectives, principles, and methodology of highway pave- or region-wide specifications with little input by local ment management and asset management. There are several airport authorities. publications that provide useful information on pavement · Pavement maintenance management practices on the net- management procedures, including pavement condition eval- work level are the cornerstone of pavement preservation. uation, selection of maintenance and rehabilitation treat- The main challenge facing airport authorities is not which ments, priority analysis, and other pavement management pavement preservation treatment to use on a particular topics. For example, FAA Advisory Circular on Guidelines section, but to justify that M&R treatments are necessary and Procedures for Maintenance of Airport Pavements and to obtain funding for their implementation. (2007); FAA Advisory Circular on Airport Pavement Man- · Information on airport pavement maintenance practices agement Program (2006); Transportation Research Circular on the network level needs to be documented.