1、Designation: D 7274 06aStandard Test Method forMineral Stabilizer Content of Prefabricated BituminousGeomembranes (BGM)1This standard is issued under the fixed designation D 7274; the number immediately following the designation indicates the year oforiginal adoption or, in the case of revision, the
2、 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 test method covers the procedure for the determi-nation of mineral stabilizer content in prefabricated
3、bituminousgeomembranes (BGM) by calcination.1.2 The values stated in SI units are to be regarded as thestandard. The values given in parentheses are for informationonly.1.3 This standard does not purport to address all of thesafety concerns, if any, associated with its use. It is theresponsibility o
4、f 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:2D 4354 Practice for Sampling of Geosynthetics for TestingD 4439 Terminology for GeosyntheticsD 6455 Gui
5、de for the Selection of Test Methods for Prefab-ricated Bituminous Geomembranes (PBGM)3. Terminology3.1 Definitions of Terms Specific to This Standard:3.1.1 prefabricated bituminous geomembrane (BGM), namaterial fabricated in a plant and consisting principally ofnon-woven polyester textile, impregna
6、ted by a blend of oxi-dized or polymer-modified bitumen incorporating filler.3.1.2 mineral stabilizer, na fine, water-insoluble inor-ganic material, used in admixture with solid or semisolidbituminous materials.3.2 For definitions of other terms used in this test method,refer to Terminology D 4439.4
7、. Significance and Use4.1 Bituminous geomembranes, whether made from oxi-dized or polymer-modified bitumen, may contain a significantamount of mineral stabilizer. The amount of mineral stabilizerused in a bituminous geomembrane has an effect on severalphysical properties, including but not limited t
8、o cold tempera-ture, flexibility, and asphalt penetration (see Guide D 6455 fora list of BGM properites).5. Apparatus5.1 Porcelain Crucible,30cm3capacity, or equivalent.5.2 Analytical Balance, capable of weighing to within6 0.001 g.5.3 Bunsen Burner.5.4 Muffle Furnace, capable of maintaining a tempe
9、rature of600 6 25C (1110 6 45F).6. Hazards6.1 Calcination of BGM involves the use of open flame andwill produce black smoke. This procedure should be carriedout under a fume hood, away from any flammable material.7. Sampling and Conditioning7.1 Sampling shall be conducted according to PracticeD 4354
10、.7.2 Remove any surface material from the sample at thelocation where the test specimen will be taken. This operationwill be easier when location is chosen on the side of the BGMwith film surfacing or on the film-covered lap. In that case, theBGM may be cooled to about 30C for 2 hours and the filmma
11、y be peeled off.7.3 Using a hot spatula or knife, sample 5 6 1 g of bitumenfrom the BGM, taking care of not scraping down to thereinforcing geotextile.7.4 Condition samples for a minimum of4hat236 3C(73.4 6 5.4F) and 50 6 5 % relative humidity before testing.8. Procedure8.1 Preheat the muffle furnac
12、e at 600 6 25C (1110 645F).8.2 Weigh the porcelain crucible to the nearest 0.001 g (C1).1This test method is under the jurisdiction of ASTM Committee D35 onGeosynthetics and is the direct responsibility of Subcommittee D35.10 on Geomem-branes.Current edition approved Nov. 15, 2006. Published Decembe
13、r 2006. Originallyapproved in 2006. Last previous edition approved in 2006 as D 727406.2For 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 Summar
14、y page onthe ASTM website.1Copyright ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.8.3 Place the sample obtained in 7.3 in the crucible andweigh to the nearest 0.001 g (C2).8.4 Under the fume hood, place the crucible over theBunsen burner fla
15、me until combustion is completed.8.5 Using adequate holding device, place the crucible in themuffle furnace set at 600 6 25C (1110 6 45F) for 60 6 5minutes. Verify that the crucible is free of any black combus-tion residue. If any are present, place the crucible in the furnacefor an additional 30 6
16、5 minutes.8.6 Let the crucible and its contents cool in a dessicator for15 6 1 minutes.8.7 Weigh the crucible to the nearest 0.001 g (C3).9. Calculation9.1 Calculate the mineral stabilizer content of the bitumen(SC) using the following equation:SC5C3 C1C2 C13 100 (1)10. Report10.1 Report the followi
17、ng information:10.1.1 Complete identification of the material tested,10.1.2 Test temperature,10.1.3 Any deviation of the specified test procedure, as wellas any possible incident.10.1.4 Specimen mineral stabilizer content (SC).11. Precision and Bias11.1 The precision and bias of this test method hav
18、e notbeen established. Round robin test should be conducted toestablish these values.12. Keywords12.1 BGM; bituminous; calcination; destructive; geomem-branes; mineral stabilizerASTM International takes no position respecting the validity of any patent rights asserted in connection with any item men
19、tionedin 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 responsibility.This standard is subject to revision at any time by the responsible technical committee
20、 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 to ASTM International Headquarters. Your comments will receive careful consideration at a meetin
21、g 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 address shown below.This standard is copyrighted by ASTM International, 100 Barr Harbor Drive, PO
22、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 7274 06a2
