ASTM_D_5976_-_00.pdf

Designation:D 5976 00Standard Specification forType I Polymer Modified Asphalt Cement for Use inPavement Construction1This standard is issued under the fixed designation D 5976;the number immediately following the designation indicates the year oforiginal adoption or,in the case of revision,the year of last revision.A number in parentheses indicates the year of last reapproval.Asuperscript epsilon(e)indicates an editorial change since the last revision or reapproval.1.Scope1.1 This specification covers asphalt cements that have beenmodified by the addition of an appropriate polymer for use inpavement construction.It was developed to provide a referencefor specifying polymer-modified asphalt and reflects the prop-erties of currently available commercial products.This is notintended to be a performance-based specification.1.2 Type I polymer-modified asphalts are typically madewith styrene-butadiene or styrene-butadiene-styrene block co-polymers.However,any polymer may be used that will givethe required test results when blended with the desired asphalt.1.3 The values stated in SI units are to be regarded as thestandard.The values given in parentheses are for informationonly.1.4 This standard does not purport to address all of thesafety concerns,if any,associated with its use.It is theresponsibility of the user of this standard to establish appro-priate safety and health practices and determine the applica-bility of regulatory limitations prior to use.2.Referenced Documents2.1 ASTM Standards:D 5 Test Method for Penetration of Bituminous Materials2D 36 Test Method for Softening Point of Bitumen(Ring-and-Ball Apparatus)3D 92 Test Method for Flash and Fire Points by ClevelandOpen Cup4D 113 Test Method for Ductility of Bituminous Materials2D 140 Practice for Sampling Bituminous Materials2D 1754 Test Method for Effect of Heat andAir onAsphalticMaterials(Thin-Film Oven Test)2D 2042 Test Method for Solubility of Asphalt Materials inTrichloroethylene2D 2170 Test Method for Kinematic Viscosity of Asphalts(Bitumens)2D 2872 Test Method for Effect of Heat andAir on a MovingFilm of Asphalt(Rolling Thin-Film Oven Test)2D 4957 Test Method for Apparent Viscosity of AsphaltEmulsion Residues2and Non-Newtonian Bitumens byVacuum Capillary Viscometer2D 6084 Test Method for Elastic Recovery of BituminousMaterials by Ductilometer2E 11 Specification for Wire-Cloth and Sieves for TestingPurposes53.Manufacture3.1 The asphalt used to prepare the polymer-modified as-phalt cement shall be prepared by the refining of crudepetroleum by suitable means.4.Physical Requirements4.1 The polymer-modified asphalt cement shall be homoge-neous and free from water and shall not foam when heated to175C(347F).4.2 The polymer-modified asphalt cement shall conform tothe requirements of Table 1.4.3 The polymer modifier and asphalt cement shall becompatible and pre-blended prior to use.5.Methods of Sampling and Testing5.1 Sample and test the polymer-modified asphalt cement inaccordance with the following test methods or practice:5.1.1 SamplingPractice D 140.5.1.2 PenetrationTest Method D 5.5.1.3 Viscosity at 60C(140F)Test Method D 4957.5.1.4 Viscosity at 135C(275F)Test Method D 2170.5.1.5 Ring and Ball Softening PointTest Method D 36.5.1.6 Flash Point,Cleveland Open CupTest MethodD 92.5.1.7 Rolling Thin Film Oven TestTest Method D 2872.5.1.8 Thin Film Oven TestTest Method D 1754.5.1.9 SolubilityTest Method D 2042.5.2 Elastic RecoveryTest Method D 6084.6.Test Methods for Type I Polymer-Modified AsphaltBinder6.1 Summary of Separation Test:6.1.1 ScopeThe separation of polymer and asphalt during1This specification is under the jurisdiction of ASTM Committee D04 on Roadand Paving Materials and is the direct responsibility of Subcommittee D04.45 onModified Asphalt Specifications.Current edition approved Dec.10,2000.Published February 2001.Originallypublished as D 597696.Last previous edition D 597696.2Annual Book of ASTM Standards,Vol 04.03.3Annual Book of ASTM Standards,Vol 04.04.4Annual Book of ASTM Standards,Vol 05.01.5Annual Book of ASTM Standards,Vol 14.02.1Copyright ASTM,100 Barr Harbor Drive,West Conshohocken,PA 19428-2959,United States.hot storage is evaluated by comparing the ring and ballsoftening point of the top and bottom portions taken from aconditioned,sealed tube of polymer-modified asphalt.Theconditioning consists of placing a sealed tube of polymer-modified asphalt in a vertical position in a 1636 5C(325 610F)oven for a 48-h period.6.1.2 Referenced DocumentsTest Method D 36 andSpecification E 11.6.1.3 Apparatus:6.1.3.1 Aluminum Tubes625.4-mm(1-in.)diameter by139.7-mm(5.5-in.)length blind aluminum tubes used to holdthe test sample during the conditioning.6.1.3.2 Oven,capable of maintaining 163 6 5C(325 610F).6.1.3.3 Freezer,capable of maintaining 6.7 6 5C(20 610F).6.1.3.4 Rack,capable of supporting the aluminum tubes in avertical position in the oven and freezer.6.1.3.5 Spatula and HammerThe spatula must be rigidand sharp to allow cutting of the