ASTM D7173-2014 5857 Standard Practice for Determining the Separation Tendency of Polymer from Polymer Modified Asphalt《测定聚合物与聚合物改性沥青分离倾向的标准实施规程》.pdf
《ASTM D7173-2014 5857 Standard Practice for Determining the Separation Tendency of Polymer from Polymer Modified Asphalt《测定聚合物与聚合物改性沥青分离倾向的标准实施规程》.pdf》由会员分享,可在线阅读,更多相关《ASTM D7173-2014 5857 Standard Practice for Determining the Separation Tendency of Polymer from Polymer Modified Asphalt《测定聚合物与聚合物改性沥青分离倾向的标准实施规程》.pdf(2页珍藏版)》请在麦多课文档分享上搜索。
1、Designation: D7173 14Standard Practice forDetermining the Separation Tendency of Polymer fromPolymer Modified Asphalt1This standard is issued under the fixed designation D7173; 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 () indicates an editorial change since the last revision or reapproval.1. Scope1.1 This practice describes a laboratory procedure for de-termining the tendency of polymer to separate from polymer
3、modified asphalt under static heated storage conditions. Theresults of testing on material prepared according to this practicemay be used as a guideline when formulating products or toestablish field handling procedures. Large differences in testresults between top and bottom specimens indicate that
4、 there isa degree of incompatibility between the polymer and the baseasphalt.1.2 The values stated in SI units are to be regarded as thestandard. No other units of measurement are included in thisstandard.1.3 This standard does not purport to address all of thesafety concerns, if any, associated wit
5、h its use. It is theresponsibility of the user of this standard to establish appro-priate safety and health practices and to determine theapplicability of regulatory limitations prior to use.2. Referenced Documents2.1 ASTM Standards:2D36 Test Method for Softening Point of Bitumen (Ring-and-Ball Appa
6、ratus)D7175 Test Method for Determining the Rheological Prop-erties of Asphalt Binder Using a Dynamic Shear Rheom-eter3. Summary of Practice3.1 A measured quantity of polymer modified asphalt in asealed aluminum tube is conditioned in a vertical position for48 h at a temperature of 163 6 5C. At the
7、end of theconditioning period, top and bottom portions are separated andsubjected to further testing to determine the degree of separa-tion. Tests chosen for this purpose depend on the polymermodification system being evaluated and the type of informa-tion desired by the user. Softening Point (Test
8、Method D36)and DSR (Test Method D7175) are the most common testsused for this purpose.4. Significance and Use4.1 Purchasers of polymer modified asphalt need to be givenguidelines on proper storage and handling procedures tomaintain the integrity of material they have purchased. Thispractice provides
9、 a significant tool for understanding thecharacteristics of these materials as well as comparing varioussources of supply.5. Apparatus5.1 Aluminum Tubes25-mm diameter by 125-mm to140-mm length aluminum separation tubes, used to hold thetest sample during conditioning.35.2 BalanceCapable of being rea
10、d to the nearest 0.1 g.5.3 OvenCapable of maintaining a temperature of 163 65C.5.4 FreezerCapable of maintaining a temperature of -106 10C.5.5 RackCapable of supporting the aluminum tubes in avertical position in the oven and freezer.5.6 ContainersMetal or glass, 100 6 20-mL capacity.5.7 Hammer and
11、Cutting ToolThe cutting tool must berigid and sharp to allow cutting of the tube containing thesample when at a low temperature.NOTE 1A tool known as a 6-in-1 painters tool has been found idealfor this purpose.1This practice is under the jurisdiction of ASTM Committee D04 on Road andPaving Materials
12、 and is the direct responsibility of Subcommittee D04.47 onMiscellaneous Asphalt Tests.Current edition approved June 1, 2014. Published July 2014. Originally approvedin 2005. Last previous edition approved in 2011 as D7173 11. DOI: 10.1520/D7173-14.2For referenced ASTM standards, visit the ASTM webs
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