ASTM C1122 C1122M-1990(2009)e1 Standard Test Method for Wet Volume of Asbestos《石棉的湿体积的标准试验方法》.pdf

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1、Designation: C1122/C1122M 90 (Reapproved 2009)1Standard Test Method forWet Volume of Asbestos1This standard is issued under the fixed designation C1122/C1122M; the number immediately following the designation indicates the yearof original adoption or, in the case of revision, the year of last revisi

2、on. A number in parentheses indicates the year of last reapproval.A superscript epsilon () indicates an editorial change since the last revision or reapproval.1NOTEUnits information was corrected editorially in March 2010.1. Scope1.1 This test method covers the appraisal of asbestos fibergroups 4 to

3、 7 (see Note 1) in terms of their occupied volumeswhen immersed in water.NOTE 1Quebec Standard designation of chrysotile asbestos grades asdetermined by Test Method D3639.1.2 The values stated in either SI units or inch-pound unitsare to be regarded separately as standard. The values stated ineach s

4、ystem may not be exact equivalents; therefore, eachsystem shall be used independently of the other. Combiningvalues from the two systems may result in non-conformancewith the standard.1.3 WarningBreathing of asbestos dust is hazardous.Asbestos and asbestos products present demonstrated healthrisks f

5、or users and for those with whom they come into contact.In addition to other precautions, when working with asbestos-cement products, minimize the dust that results. For informa-tion on the safe use of chrysoltile asbestos, refer to “Safe Useof Chrysotile Asbestos: A Manual on Preventive and Control

6、Measures.”21.4 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. For

7、 a specifichazard warning, see 1.3.2. Referenced Documents2.1 ASTM Standards:3D1193 Specification for Reagent WaterD2590 Test Method for Sampling Chrysotile AsbestosD2946 Terminology for Asbestos and AsbestosCementProductsD3639 Test Method for Classification of Asbestos by Que-bec Standard TestD3879

8、 Test Method for Sampling Amphibole Asbestos4E177 Practice for Use of the Terms Precision and Bias inASTM Test Methods2.2 Other Standard:Quebec Standard Designation of Chrysotile AsbestosGrades53. Terminology3.1 DefinitionsRefer to Terminology D2946.4. Summary of Test Method4.1 A test specimen is di

9、spersed in water by means of amechanically driven inverter. The resulting suspension is thenallowed to stand for a fixed period, and the volume occupied bythe fiber, as defined by the solid-liquid interface, is recorded.5. Significance and Use5.1 Wet volume gives an indication of the degree ofloftin

10、ess and openness of asbestos fiber.6. Apparatus6.1 Graduated Glass CylinderMeeting the followingspecification, as shown in Fig. 1:6.1.1Capacity 2 dm32000 cm3Subdivisions 0.02 dm320 cm3Inside diameter 80 cmWall thickness 3 mmTotal height 482 6 3mmHeight from inner bottom of base tothe 2000 cm3mark398

11、 6 6mm6.1.2 The cylinder must have a full-width mouth reinforcedwith an exterior beaded rim, without any spout.6.1.3 The bottom of the graduated cylinder must be flat andmust form a clean right angle with the wall of the graduate.1This test method is under the jurisdiction of ASTM Committee C17 onFi

12、ber-Reinforced Cement Products and is the direct responsibility of SubcommitteeC17.03 on Asbestos - Cement Sheet Products and Accessories.Current edition approved Nov. 1, 2009. Published March 2010. Originallyapproved in 1989. Last previous edition approved in 2004 as C1122 90(2004)1.DOI: 10.1520/C1

13、122_C1122M-90R09E01.2Available from The Asbestos Institute, http:/ 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 Summary page onthe ASTM website

14、.4Withdrawn. The last approved version of this historical standard is referencedon www.astm.org.5Available from the Asbestos Institute, 1130 Sherbrooke St. West, Ste. 410,Montreal, QC Canada H3A 2M8.1Copyright ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959,

15、United States.6.2 Mechanically Driven Inverter, for rotating the graduatedcylinder about a horizontal axis at the center of the graduatedcylinder at 30 rpm for 30 complete rotations. The inverter mayclamp the cylinder in such a way as to seal the mouth, orseparate stoppers may be used provided the l

16、atter do not projectinside the cylinder (see Fig. 2 and Fig. 3).7. Hazards7.1 Warningsee 1.3.8. Sampling, Test Specimens, and Test Units8.1 Sampling:8.1.1 Select a sample in accordance with Test MethodsD2590, in the case of chrysotile asbestos, or D3879 in the caseof amphibole asbestos.8.2 Test Spec

17、imens:8.2.1 Refer to Table 1 for specimen sizes required. Take twospecimens in each case.9. Procedure9.1 Fill the cylinder with distilled water (see Note 2) orTypeIV reagent water as defined in Specification D1193,at2562C 77 6 3F to the 1000 cm3mark of the cylinder.NOTE 2It is recognized that clean

18、water from different locations mayaffect results slightly. Therefore, when results from one laboratory will becompared with the results of another laboratory, distilled water should beused.9.2 Pour the test specimen into the cylinder and add distilledor reagent water to the 2000 cm3mark.9.3 Clamp th

19、e cylinder on the mechanical inverter androtate through 6.3 rad (360) 30 times in one min. Let stand for10 min and then repeat the rotation cycle.FIG. 1 Graduated CylinderFIG. 2 Mechanically Driven InverterFIG. 3 Alternative Design of Mechanically Driven InverterTABLE 1 Specimen Size and Test Durati

20、onGroup2No.Specimenweight, gSedimentation timeks h4to6 306 0.1 7.2 2726 0.1 14.4 4C1122/C1122M 90 (2009)129.4 Remove the cylinder and place carefully on a levelledvibration free table.9.5 Record the wet volume of the fiber suspended in waterin cm3after 7.2 ks (2 h) for Groups 4, 5, and 6 fibers, and

21、 after14.4 ks (4 h) for Group 7 fibers.9.6 Repeat the test until two concordant volumes are ob-served on the sample as required in 11.1.10. Report10.1 Report the average of two acceptable results express-ing the wet volume in units of cm3(or mL).10.2 Fully identify the samples as to grade and origin

22、.11. Precision and Bias611.1 Results are acceptable if the difference in wet volumeof the two specimens does not exceed 65%.11.2 Precision:11.2.1 The single-laboratory multi-apparatus-operator-dayprecision (repeatability) is6 4 % (two sigma limits expressedin units of percentage) (2S %) as defined i

23、n Practice E177 overthe wet volume range from 306 to approximately 1700 cm3.11.2.2 A partial verification of the repeatability that con-firmed the above data, RR:C17-1001 is on file at ASTMHeadquarters, and a copy is available upon request.11.3 Bias:11.3.1 No justifiable statement can be made on the

24、 bias ofthis test method since the true value of the wet volume cannotbe established by an accepted referee test method.12. Keywords12.1 asbestos; bulk; buoyancy; volume; wet bulk; wetvolumeASTM International takes no position respecting the validity of any patent rights asserted in connection with

25、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 responsibility.This standard is subject to revision at any time by the responsible technic

26、al 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 to ASTM International Headquarters. Your comments will receive careful consideration

27、 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 address shown below.This standard is copyrighted by ASTM International, 100 Barr Harbo

28、r 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). Permission rights to photocopy the standard may also be secured from the ASTM website (www.astm.org/COPYRIGHT/).6Supporting data is available from ASTM International Headquarters. RequestRR:C17-1001.C1122/C1122M 90 (2009)13