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46 AASHTO: American Association of State Highway and Transportation Officials AFT: apparent film thickness ALF: Accelerated Loading Facility ARZ: above restricted zone ASTM: American Society for Testing and Materials BRZ: below restricted zone CAM: ChristensenâAndersonâMarasteanu Model DOT: Department of Transportation ESALs: equivalent single axle loads FHWA: Federal Highway Administration FM300: fineness modulus 300 μm basis HMA: hot mix asphalt IDT: indirect tensile JMF: job mix formula LTPP: Long-Term Pavement Performance (Program) LVE: linear viscoelastic MAAT: mean annual air temperature MnRoad: Minnesota Road Research Project MPSS: maximum permanent shear strain NCAT: National Center for Asphalt Technology NCHRP: National Cooperative Highway Research Program Ndesign: design number of gyrations NMAS: nominal maximum aggregate size PG: performance grade PI: penetration index PVN: penetration-viscosity number QC/QA: quality controlâquality assurance RAP: recycled asphalt pavement RPS: research project statement RSCH: repeated shear at constant height SBR: styrene-butadiene rubber SBS: styrene-butadiene-styrene rubber SHRP: Strategic Highway Research Program SMA: stone matrix asphalt TRB: Transportation Research Board TRZ: through the restricted zone VBE: effective asphalt content by volume VFA: voids filled with asphalt VMA: voids in mineral aggregate VTM: total voids in mix GLOSSARY