1、Designation: D 6152 99 (Reapproved 2005)Standard Specification forSEBS-Modified Mopping Asphalt Used in Roofing1This standard is issued under the fixed designation D 6152; the number immediately following the designation indicates the year oforiginal adoption or, in the case of revision, the year of
2、 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 SEBS (styrene-ethylene-butylene-styrene)-modified asphalt intended for use in built-uproof
3、 construction, construction of some modified bitumensystems, construction of bituminous vapor retarder systems,and for adhering insulation boards used in various types of roofsystems.1.2 This specification is intended as a material specification.Issues regarding the suitability of specific roof cons
4、tructions orapplication techniques are beyond its scope.1.3 The specified tests and property values used to charac-terize SEBS-modified asphalt are intended to establish mini-mum properties. In place system design criteria or performanceattributes are factors beyond the scope of this specification.1
5、.4 The values stated in SI units are to be regarded as thestandard. The values given in parentheses are for informationonly.1.5 This standard does not purport to address the safetyconcerns, if any, associated with its use. It is the responsibilityof the user of this standard to establish appropriate
6、 safety andhealth practices and determine the applicability of regulatorylimitations prior to use.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 Fir
7、e Points by ClevelandOpen Cup TesterD 140 Practice for Sampling Bituminous MaterialsD 312 Specification for Asphalt Used in RoofingD 412 Test Methods for Vulcanized Rubber and Thermo-plastic ElastomersTensionD 1079 Terminology Relating to Roofing and Waterproof-ingD 2042 Test Method for Solubility o
8、f Asphalt Materials inTrichloroethyleneD 3111 Test Method for Flexibility of Hot-Melt Adhesivesby Mandrel Bend Test Method3. Terminology3.1 DefinitionsFor definitions of general terms used inthis specification, refer to Terminology D 1079.3.2 Definitions of Terms Specific to This Standard:3.2.1 elas
9、tic recovery, nthe degree to which a materialreturns to its normal dimensions after being distorted.3.2.2 low temperature flexibility, nthe ability of a materialto bend at a prescribed rate around a mandrel of a prescribeddiameter at a prescribed low temperature without cracking orbreaking.4. Materi
10、als and Manufacture4.1 The base asphalt shall be prepared from crude petro-leum.4.2 The SEBS-modified asphalt shall incorporate sufficientSEBS as the primary polymeric modifier to meet the require-ments of this specification.5. Physical Requirements5.1 The SEBS modified asphalt shall be homogeneous
11、andfree of water.5.2 The SEBS modified asphalt shall conform to the physi-cal properties prescribed in Table 1.6. Sampling6.1 Sample the material as prescribed in Practice D 140.6.2 If the material is shipped in hot filled cardboard orplastic kegs, obtain samples from the kegs in accordance withthe
12、following procedure:6.2.1 Remove the container from the block of SEBS-modified asphalt, cutting away the liner if present.1This specification is under the jurisdiction of ASTM Committee D08 onRoofing and Waterproofing and is the direct responsibility of Subcommittee D08.03on Surfacing and Bituminous
13、 Materials for Membrane Waterproofing and Built-UpRoofing.Current edition approved May 1, 2005. Published May 2005. Originallyapproved in 1997. Last previous edition approved in 1999 as D 6152 99.2For referenced ASTM standards, visit the ASTM website, www.astm.org, orcontact ASTM Customer Service at
14、 serviceastm.org. For Annual Book of ASTMStandards volume information, refer to the standards Document Summary page onthe ASTM website.1Copyright ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.6.2.2 Using a hatchet or a hot knife, cut two vert
15、ical wedgesapproximately 50 mm (2 in.) wide and 50 mm (2 in.) deepalong the entire length of the material block. Cut the wedgesinto 100-mm (4-in.) lengths.6.2.3 Place the wedges in a can with a capacity of 3.8 L (1gal). Loosely cover the can and heat in a convection oven at210 6 5C (410 6 9F) for a
16、period of 212 612 h. Stir thesample thoroughly to ensure homogeneity.7. Test Methods7.1 Determine compliance with the requirements of thisspecification in accordance with the following methods:7.1.1 Softening PointTest Method D36.7.1.2 Flash PointTest Method D92.7.1.3 PenetrationTest Method D5.7.1.4
17、 SolubilityTest Method D 2042.7.1.5 Tensile ElongationTest Method D 412.7.1.6 Low Temperature FlexibilityTest Method D 3111.7.1.7 Elastic RecoveryTest Method D 412.7.2 Specimens for tensile elongation, elastic recovery, andlow temperature flexibility shall be cut from a molded or hotpoured plaque 2.
18、00 6 0.15 mm (0.079 6 0.006 in.) thick.7.2.1 The following simple procedure may be used forpreparing a hot poured plaque. Heat the asphalt to 210 6 5C(410 6 9F) in a convection oven. While heating, place twometal strips of the thickness stated above along the sides of apiece of release paper. Pour t
19、he heated SEBS-modified asphaltonto the release paper, immediately cover with another piece ofrelease paper, then roll out with a rolling pin, piece of pipe, andso forth, using the metal strips as guides to maintain properspecimen thickness.7.3 Determine tensile elongation as prescribed by TestMetho
20、d D 412 using die C. The test shall be made at 23.0 62.0C (73.4 6 3.6F) and with a speed of 500 6 25 mm/min(20 6 1 in./min).7.4 Determine low temperature flexibility as prescribed byTest Method D 3111 using a 25 6 1-mm (1.00 6 0.04-in.)diameter mandrel. The specimens shall be 2.00 6 0.15 mm(0.079 6
21、0.006 in.) thick.7.5 Determine elastic recovery using the tensile set proce-dure as prescribed by Test Method D 412 using die C. The testshall be made at 23.0 6 2.0C (73.4 6 3.6F) and with a speedof 500 6 25 mm/min (20 6 1 in./min). Elongate the specimen300 %, then immediately release the lower jaw
22、to allowrecovery. Record elastic recovery as follows:Recovery, % 5 1004LX!/3L (1)where:L = initial length between benchmarks, andX = length between benchmarks after recovery.7.6 Determine high temperature stability by conditioningthe specimen as prescribed in Section 8. Determine thesoftening point
23、of the specimen as prescribed by Test MethodD36. The softening point of the specimen shall not change bymore than 10C. Determine the penetration of the specimen asprescribed by Test Method D5. The penetration of the speci-men shall not change by more than 12 units. The softeningpoint and penetration
24、 of the SEBS-modified asphalt shallremain within the specification limits after conditioning.8. Stability During Heat Exposure8.1 Scope:8.1.1 The stability of SEBS-modified asphalt is evaluatedby the retention of softening point and penetration after heatexposure. The heat exposure shall be conducte
25、d for8hat2606 5C (500 6 9F).8.1.2 This procedure may require heating asphalt to atemperature in excess of its flash point. Take care to provideadequate ventilation and to avoid ignition sources.8.2 Apparatus:8.2.1 CanUse a lidded can with a capacity of 0.95 L (1 qt)and capable of withstanding a temp
26、erature of 300C (572F).The can shall not be coated or lined with a material that willreact with asphalt at 300C (572F).8.3 Procedure:8.3.1 In a convection oven heat the SEBS-modified asphaltto 210 6 10C (410 6 18F) and pour 500 6 50 g into a 0.95L (1 qt) can. Place the lid loosely on the can.8.3.2 I
27、mmediately place the can in a convection ovenpreheated to 260 6 5C (500 6 9F). Maintain the convectionoven at this temperature for 8 h 6 5 min.8.3.3 Cool the SEBS-modified asphalt to a temperaturesuitable for pouring softening point and penetration test speci-mens.8.3.4 Stir the SEBS-modified asphal
28、t before pouring toensure homogeneity.9. Inspection9.1 Inspection of the material shall be agreed upon betweenthe purchaser and the supplier as part of the purchase contract.10. Rejection and Resubmittal10.1 Failure to conform to any of the requirements pre-scribed in the specification shall constit
29、ute grounds for rejec-tion. In case of rejection, the seller shall have the right toreinspect the rejected material and resubmit the lot afterremoval of those packages not conforming to the requirements.11. Packaging and Package Marking11.1 The SEBS-modified asphalt shall be packaged suitably,if not
30、 shipped in bulk, to permit acceptance by the carrier andTABLE 1 Physical Requirements of SEBS-Modified Asphalt Usedin RoofingAProperty Min MaxSoftening point, C (F) 85 (185) 116 (240)before and after heat exposureSoftening point change, C (F) 5 (9) 5 (9)after heat exposureFlash point, C (F) 260 (50
31、0) . . .Penetration, units at 25C (77F) 20 60before and after heat exposurePenetration change, units at 25C (77F) 5 12after heat exposureSolubility in trichloroethylene, % 99 . . .Tensile elongation, %, at 25C (77F) 750 . . .Elastic recovery, % 80 . . .Low temperature flexibility, pass at C (F) . .
32、. 7 (20)AThe properties in this table are “as manufactured” unless otherwise noted.D 6152 99 (2005)2to afford adequate protection from the normal hazards ofhandling and shipping.11.2 Each container (or bill of lading if shipped in bulk)shall be marked plainly with the name of the manufacturer orsell
33、er, the ASTM designation and type of product, the flashpoint, and the manufacturers recommended application tem-perature for mop and mechanical spreader application.12. Keywords12.1 asphalt; built-up roof construction; modified bitumenroof construction; mopping asphalt; SEBSASTM International takes
34、no position respecting the validity of any patent rights asserted in connection with any item mentionedin this standard. Users of this standard are expressly advised that determination of the validity of any such patent rights, and the riskof infringement of such rights, are entirely their own respo
35、nsibility.This standard is subject to revision at any time by the responsible technical committee and must be reviewed every five years andif not revised, either reapproved or withdrawn. Your comments are invited either for revision of this standard or for additional standardsand should be addressed
36、 to ASTM International Headquarters. Your comments will receive careful consideration at a meeting of theresponsible technical committee, which you may attend. If you feel that your comments have not received a fair hearing you shouldmake your views known to the ASTM Committee on Standards, at the a
37、ddress shown below.This standard is copyrighted by ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959,United States. Individual reprints (single or multiple copies) of this standard may be obtained by contacting ASTM at the aboveaddress or at 610-832-9585 (phone), 610-832-9555 (fax), or serviceastm.org (e-mail); or through the ASTM website(www.astm.org).D 6152 99 (2005)3
