ASTM_D_6114_-_D_6114M_-_09.pdf

Designation:D6114/D6114M09Standard Specification forAsphalt-Rubber Binder1This standard is issued under the fixed designation D6114/D6114M;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 specification covers asphalt-rubber binder,consist-ing of a blend of paving grade asphalt cements,groundrecycled tire(that is,vulcanized)rubber and other additives,asneeded,for use as binder in pavement construction.The rubbershall be blended and interacted in the hot asphalt cementsufficiently to cause swelling of the rubber particles prior touse.NOTE1It has been found that at least 15%rubber by weight of thetotal blend is usually necessary to provide acceptable properties ofasphalt-rubber.1.2 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.1.3 The following precautionary caveat pertains to the testmethod portions only,Sections 4 and 5 of this Specification:This standard does not purport to address all of the safetyconcerns,if any,associated with its use.It is the responsibilityof the user of this standard to establish appropriate safety andhealth practices and determine the applicability of regulatorylimitations prior to use.Specific precautionary statements aregiven in 4.3.2.2.Referenced Documents2.1 ASTM Standards:2D5 Test Method for Penetration of Bituminous MaterialsD36 Test Method for Softening Point of Bitumen(Ring-and-Ball Apparatus)D92 Test Method for Flash and Fire Points by ClevelandOpen Cup TesterD140 Practice for Sampling Bituminous MaterialsD946 Specification for Penetration-Graded Asphalt Cementfor Use in Pavement ConstructionD1754 Test Method for Effects of Heat and Air on AsphalticMaterials(Thin-Film Oven Test)D1864 Test Method for Moisture in MineralAggregate Usedon Built-Up RoofsD2196 Test Methods for Rheological Properties of Non-Newtonian Materials by Rotational(Brookfield type)ViscometerD2872 Test Method for Effect of Heat and Air on a MovingFilm of Asphalt(Rolling Thin-Film Oven Test)D3381 Specification for Viscosity-Graded Asphalt Cementfor Use in Pavement ConstructionD5329 Test Methods for Sealants and Fillers,Hot-Applied,for Joints and Cracks in Asphaltic and Portland CementConcrete PavementsD5644 Test Methods for Rubber Compounding MaterialsDetermination of Particle Size Distribution of RecycledVulcanizate Particulate RubberD6373 Specification for Performance Graded AsphaltBinder3.Materials3.1 Asphalt CementThe asphalt cement shall meet therequirements of Specifications D946,D3381 or D6373.Ac-ceptable grades shall be able to produce the properties of Table1 of this specification when interacted with ground recycledtire rubber.3.2 Ground Recycled Tire Rubber:3.2.1 The ground recycled tire rubber shall contain less than0.75%moisture by weight and shall be free flowing.Thespecific gravity of the rubber shall be 1.15 6 0.05.The groundrecycled tire rubber shall contain no visible nonferrous metalparticles and no more than 0.01%ferrous metal particles byweight.3.2.2 For use in hot mix binders,the fiber content shall notexceed 0.5%by weight of ground recycled tire rubber.However for use in binders for spray applications,fiber contentshall not exceed 0.1%by weight.Up to 4%by weight ofmineral powder(such as talc)is permitted to prevent stickingand caking of the rubber particles.Other foreign contaminatingmaterials(see Note 2)shall be less than 0.25%by weight.1This specification is under the jurisdiction of ASTM Committee D04 on Roadand Paving Materials and is the direct responsibility of Subcommittee D04.40 onAsphalt Specifications.Current edition approved June 1,2009.Published July 2009.Originally approvedin 1997.Last previous edition approved in 2002 as D6114 97(2002).DOI:10.1520/D6114_D6114M-09.2For 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 NOTE2Other foreign contaminants include,but are not limited to,materials such as glass,sand,wood,etc.3.2.3 It is recommended that no rubber particles should beretained on the 2.36 mm No.8 sieve.Rubber gradationshould be agreed upon between purchaser and asphalt-rubbersupplier for the specific mixture applications(see Note 3).NOTE3It has been found that rubber gradiation may affect thephysical properties and performance of hot paving mixtures usingasphalt-rubber binde