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Pages 112-124

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From page 112...
... 112 This appendix provides an introduction to treatments that can be used as preventive maintenance of both asphalt- and concrete-surfaced general aviation pavements. Keep in mind, however, that it is not the treatment itself that determines a preventive maintenance application, but rather the condition of the pavement when the treatment is applied.
From page 113...
... Pavement Treatments 113 CRACK SEALING/FILLING Tr ea tm en t D es cr ip tio n Crack sealing and crack filling consist of the placement of an adhesive material into and/or over cracks at the pavement surface. These treatments are primarily intended to prevent moisture from entering into the pavement structure through existing cracks, thereby reducing further crack deterioration, roughness, and rutting.
From page 114...
... 114 Preventive Maintenance at General Aviation Airports CHIP SEAL Tr ea tm en t D es cr ip tio n A chip seal is a spray application of asphalt (commonly an emulsion, although heated asphalt cement and cutbacks may be used) directly to the pavement surface (0.35 to 0.50 gal/yd2)
From page 115...
... Pavement Treatments 115 A pp lic at io ns /U se s Conditions Addressed Seal/Waterproof Pavement -- Prevent or slow the infiltration of moisture into the pavement surface Rejuvenate Surface/Inhibit Oxidation -- Enrich the hardened/oxidized existing surface and inhibit raveling Conditions Not Addressed: This spray-applied treatment does not address cracking; pavements with extensive cracking should be treated in another manner. Similarly, pavements with signs of structural deterioration are best treated in some other manner.
From page 116...
... 116 Preventive Maintenance at General Aviation Airports M isc el la ne ou s C on sid er at io ns O th er R em ar ks Cost ($ to $$$$) : Treatment Life (years)
From page 117...
... Pavement Treatments 117 Sp ec Guidance AC 150/5380-6B, Guidelines and Procedures for Maintenance of Airport Pavements ACRP Synthesis 22: Common Airport Pavement Maintenance Practices Specifications ISSA A143 FAA P-635 A pp lic at io ns /U se s Conditions Addressed Longitudinal cracking Transverse cracking Block cracking Raveling/weathering Oxidation Friction loss Moisture infiltration Bleeding Roughness Rutting Conditions Not Addressed: Microsurfacing does not add structural capacity. Limitations: Pavements undergoing high deflections or HMA pavements susceptible to stripping are not good candidates for microsurfacing.
From page 118...
... 118 Preventive Maintenance at General Aviation Airports Sp ec Guidance AC 150/5380-6B, Guidelines and Procedures for Maintenance of Airport Pavements ACRP Synthesis 22: Common Airport Pavement Maintenance Practices Specifications FAA Item P-401 A pp lic at io ns /U se s Conditions Addressed Longitudinal cracking Transverse cracking Raveling/weathering Block cracking Friction loss Bleeding Roughness Conditions Not Addressed: While thin HMA overlays should not be used to address structural deficiencies, greater structural benefit in terms of load-carrying capability is possible the thicker the overlay. Rutting can be addressed with a separate rut-fill application before overlay placement.
From page 119...
... Pavement Treatments 119 A pp lic at io ns /U se s Conditions Addressed Longitudinal cracking* Transverse cracking*
From page 120...
... 120 Preventive Maintenance at General Aviation Airports C on st ru ct io n C on sid er at io ns Aggregate type and hardness influence costs and productivity. Grinding slurry must be collected on site and disposed of in accordance with local regulations.
From page 121...
... Pavement Treatments 121 M isc el la ne ou s C on sid er at io ns Cost ($ to $$$$)
From page 122...
... 122 Preventive Maintenance at General Aviation Airports M isc el la ne ou s C on sid er at io ns O th er R em ar ks Treatment Life (years) : 10 to 15 Pavement Life Extension (years)
From page 123...
... Abbreviations and acronyms used without definitions in TRB publications: A4A Airlines for America AAAE American Association of Airport Executives AASHO American Association of State Highway Officials AASHTO American Association of State Highway and Transportation Officials ACI–NA Airports Council International–North America ACRP Airport Cooperative Research Program ADA Americans with Disabilities Act APTA American Public Transportation Association ASCE American Society of Civil Engineers ASME American Society of Mechanical Engineers ASTM American Society for Testing and Materials ATA American Trucking Associations CTAA Community Transportation Association of America CTBSSP Commercial Truck and Bus Safety Synthesis Program DHS Department of Homeland Security DOE Department of Energy EPA Environmental Protection Agency FAA Federal Aviation Administration FHWA Federal Highway Administration FMCSA Federal Motor Carrier Safety Administration FRA Federal Railroad Administration FTA Federal Transit Administration HMCRP Hazardous Materials Cooperative Research Program IEEE Institute of Electrical and Electronics Engineers ISTEA Intermodal Surface Transportation Efficiency Act of 1991 ITE Institute of Transportation Engineers MAP-21 Moving Ahead for Progress in the 21st Century Act (2012) NASA National Aeronautics and Space Administration NASAO National Association of State Aviation Officials NCFRP National Cooperative Freight Research Program NCHRP National Cooperative Highway Research Program NHTSA National Highway Traffic Safety Administration NTSB National Transportation Safety Board PHMSA Pipeline and Hazardous Materials Safety Administration RITA Research and Innovative Technology Administration SAE Society of Automotive Engineers SAFETEA-LU Safe, Accountable, Flexible, Efficient Transportation Equity Act: A Legacy for Users (2005)
From page 124...
... TRA N SPO RTATIO N RESEA RCH BO A RD 500 Fifth Street, N W W ashington, D C 20001 A D D RESS SERV ICE REQ U ESTED ISBN 978-0-309-30875-5 9 7 8 0 3 0 9 3 0 8 7 5 5 9 0 0 0 0 N O N -PR O FIT O R G .

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