1、Designation:D 5841 00Standard Specification forType III Polymer Modified Asphalt Cement for Use inPavement Construction1This standard is issued under the fixed designation D 5841;the number immediately following the designation indicates the year oforiginal adoption or,in the case of revision,the ye
2、ar 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 the appropriate polymer for use
3、inpavement construction.It was developed to provide a referencefor specifying polymer modified asphalt and reflects theproperties of currently available commercial products.Thetests are intended to measure compatibility and degree ofmodification,not performance characteristics.This is notintended to
4、 be a performance based specification.1.2 Type III polymer-modified asphalts are typically madewith ethyl vinyl acetate.However any polymer may be usedthat will give the required test results when blended with thedesired asphalt.1.3 This standard does not purport to address all of thesafety concerns
5、,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 Ma
6、terials2D 36 Test Method for Softening Point of Bitumen(Ring-and-Ball Apparatus)3D 92 Test Method for Flash and Fire Point by ClevelandOpen Cup4D 140 Practice for Sampling Bituminous Materials2D 1754 Test Method for Effect of Heat andAir onAsphalticMaterials(Thin-Film Oven Test)2D 2042 Test Method f
7、or 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)23.Physical Requirements3.1 The polymer modified asphalt cement shall be homoge-
8、neous,free from water and shall not foam when heated to347F(175C).3.2 The polymer modified asphalt cement shall conform tothe requirements of Table 1.3.3 The polymer modifier and the asphalt cement shall becompatible and pre-blended prior to use.4.Sampling and Test Methods4.1 Sample and test the pol
9、ymer modified asphalt cement inaccordance with the following test methods and practices:4.1.1 SamplingPractice D 140.4.1.2 Penetration Test Method D 5.4.1.3 Viscosity at 275F(135C)Test Method D 2170.4.1.4 Softening Point Test Method D 36.4.1.5 Flash Point,Cleveland Open CupTest MethodD 92.4.1.6 Solu
10、bility in TrichloroethyleneTest Method D 2042.4.1.7 Rolling Thin-Film Oven TestTest Method D 2872.4.1.8 Thin-Film Oven TestTest Method D 1754.5.Test Method for Type III Polymer Modified Asphalt5.1 Separation Test for Type III Polymer Modified Asphalt:5.1.1 Scope:5.1.1.1 This test is a simple qualita
11、tive test for compatibilityof low density polymers in asphalt.5.2 Apparatus:5.2.1 ContainersStandard 6 oz metal sample cups(1.875in.high by 2.75 in.inside diameter).5.2.2 OvenAn oven capable of maintaining 275 6 10F(135 6 5C).5.3 Procedure:5.3.1 After a blend of polymer in asphalt has been prepareda
12、nd is still at elevated temperature,pour enough of the mix intoa clean 6 oz metal test cup to fill it to the formed roll on the cup(approximately14in.from the top).Place the sample in acontrolled temperature oven at 275F(135C)for 15 to 18 h.Remove carefully from the oven without disturbing the surfa
13、ceand observe the sample.After the initial observation,a spatulacan be used to gently probe the sample and check consistencyof any surface layer and checkfor sludge on the bottom.Theseobservations and tests should be done while the sample is still1This specification is under the jurisdiction of ASTM
14、 Committee D04 on Roadand Paving Materials and is under the direct responsibility of SubcommitteeD04.45on Modified Asphalt Specifications.Current edition approved Dec.10,2000.Published February 2001.Originallypublished as D 584195.Last previous edition D 584195.2Annual Book of ASTM Standards,Vol 04.
15、03.3Annual Book of ASTM Standards,Vol 04.04.4Annual Book of ASTM Standards,Vol 05.01.1Copyright ASTM,100 Barr Harbor Drive,West Conshohocken,PA 19428-2959,United States.hot,within 5 min after removal from the oven.5.3.2 Depending on the physical characteristics of the poly-mer and compatibility of t
16、he particular asphalt/polymer sys-tem,varying conditions will be noted.These are described andshould be reported as follows:DescriptionReportHomogeneous,no skinning or sludgeHomogeneousSlight polymeric skin at edges of cupSlight edge skinningThin polymeric skin on entire surfaceThin total skinningThick polymeric skin(132in.+)on entire sur-faceThick total skinningNo surface skinning but thin sludge at bottomof containerThin bottom skinningNo surface skinning but thick(14in.+)sludgeat bottom of co
