ASTM_D_6932_-_D_6932M_-_08_2013.pdf

Designation:D6932/D6932M08(Reapproved 2013)Standard Guide forMaterials and Construction of Open-Graded Friction CoursePlant Mixtures1This standard is issued under the fixed designation D6932/D6932M;the number immediately following the designation indicates theyear of original adoption or,in the case of revision,the year of last revision.A number in parentheses indicates the year of lastreapproval.A superscript epsilon()indicates an editorial change since the last revision or reapproval.1.Scope1.1 This guide covers the construction of bituminous open-graded friction course plant mixtures.End-use specificationsshould be adopted to conform to job and user requirements.Where applicable,Specification D3666 should be applied as aminimum for agencies testing and inspecting road and pavingmaterials.1.2 Bituminous open-graded friction courses are placed asthe final wearing course for highways and airfields.1.3 The values stated in either SI units or inch-pound unitsare to be regarded separately as standard.The values stated ineach system may not be exact equivalents;therefore,eachsystem shall be used independently of the other.Combiningvalues from the two systems may result in non-conformancewith the standard.2.Referenced Documents2.1 ASTM Standards:2C29/C29M Test Method for Bulk Density(“Unit Weight”)and Voids in AggregateC88 Test Method for Soundness of Aggregates by Use ofSodium Sulfate or Magnesium SulfateC127 Test Method for Density,Relative Density(SpecificGravity),and Absorption of Coarse AggregateC128 Test Method for Density,Relative Density(SpecificGravity),and Absorption of Fine AggregateC131 Test Method for Resistance to Degradation of Small-Size Coarse Aggregate by Abrasion and Impact in the LosAngeles MachineC136 Test Method for Sieve Analysis of Fine and CoarseAggregatesC1252 Test Methods for Uncompacted Void Content of FineAggregate(as Influenced by Particle Shape,SurfaceTexture,and Grading)D75 Practice for Sampling AggregatesD140 Practice for Sampling Bituminous MaterialsD448 Classification for Sizes of Aggregate for Road andBridge ConstructionD946 Specification for Penetration-Graded Asphalt Cementfor Use in Pavement ConstructionD1461 Test Method for Moisture or Volatile Distillates inBituminous Paving MixturesD2419 Test Method for Sand Equivalent Value of Soils andFine AggregateD2995 Practice for Estimating Application Rate of Bitumi-nous DistributorsD3381 Specification for Viscosity-Graded Asphalt Cementfor Use in Pavement ConstructionD3666 Specification for Minimum Requirements for Agen-cies Testing and Inspecting Road and Paving MaterialsD4791 Test Method for Flat Particles,Elongated Particles,or Flat and Elongated Particles in Coarse AggregateD5821 Test Method for Determining the Percentage ofFractured Particles in Coarse AggregateD6114 Specification for Asphalt-Rubber BinderD6307 Test Method forAsphalt Content of Hot-MixAsphaltby Ignition MethodD6373 Specification for Performance Graded AsphaltBinderD6390 Test Method for Determination of Draindown Char-acteristics in Uncompacted Asphalt MixturesD7064 Practice for Open-Graded Friction Course(OGFC)Mix Design2.2 Other References:TRB NCHRP Synthesis 284 Performance Survey on Open-Graded Friction Course MixesNCAT Report No.2001-01 Design,Construction and Per-formance of New Generation Open-Graded FrictionCoursesFAA-RD-73-197FAA-RD-74-383.Terminology3.1 Definitions of Terms Specific to This Standard:1This guide is under the jurisdiction of ASTM Committee D04 on Road andPaving Materials and is the direct responsibility of Subcommittee D04.23 onPlant-Mixed Bituminous Surfaces and Bases.Current edition approved Dec.1,2013.Published February 2014.Originallyapproved in 2004.Last previous edition approved in 2008 as D6932/D6932M 08.DOI:10.1520/D6932_D6932M-08R13.2For referenced ASTM standards,visit the ASTM website,www.astm.org,orcontact ASTM Customer Service at serviceastm.org.For Annual Book of ASTMStandards volume information,refer to the standards Document Summary page onthe ASTM website.Copyright ASTM International,100 Barr Harbor Drive,PO Box C700,West Conshohocken,PA 19428-2959.United States1 3.1.1 open-graded friction course(OGFC),n special typeof hot mix asphalt surface mixture used for reducing hydro-planing and potential for skidding,where the function of themixture is to provide a free-draining layer that permits surfacewater to migrate laterally through the mixture to the edge of thepavement.3.1.1.1 DiscussionExample gradings can be found inAppendix X1.4.Significance and Use4.1 This guide provides information to assist engineers withthe design requirements and construction guidelines for pavingan Open-Graded Friction Course(OGFC)surface layer.AnOGFC is primarily used to improve the skid resistance andwear resistance of a bituminous pavement by providing anescape route for surface water beneath a moving wheel load.The mixture is typically produced with a low amount of fineaggregate particles and high air void content to provide apassageway of