ASTM C1122-1990(2004)e1 Standard Test Method for Wet Volume of Asbestos《石棉的湿体积的试验方法》.pdf

1、Designation: C 1122 90 (Reapproved 2004)e1Standard Test Method forWet Volume of Asbestos1This standard is issued under the fixed designation C 1122; the number immediately following the designation indicates the year oforiginal adoption or, in the case of revision, the year of last revision. A numbe

2、r in parentheses indicates the year of last reapproval. Asuperscript epsilon (e) indicates an editorial change since the last revision or reapproval.e1NOTEAsbestos warning was moved from 7.1 to 1.3 in September 2004.1. Scope1.1 This test method covers the appraisal of asbestos fibergroups 4 to 72in

3、terms of their occupied volumes whenimmersed in water.1.2 The values stated in SI units are to be regarded as thestandard. The values given in parentheses are for informationonly.1.3 WarningBreathing of asbestos dust is hazardous.Asbestos and asbestos products present demonstrated healthrisks for us

4、ers 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 ControlMeasu

5、res.”31.4 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 a sp

6、ecifichazard warning, see 1.3.2. Referenced Documents2.1 ASTM Standards:4D 1193 Specification for Reagent WaterD 2590 Test Method for Sampling Chrysotile AsbestosD 2946 Terminology Relating to AsbestosD 3639 Test Method for Classification of Asbestos Fibersby Quebec Standard TestD 3879 Test Method f

7、or Sampling Amphibole AsbestosE 177 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 D 2946.4. Summary of Test Method4.1 A test specimen is dispersed in wa

8、ter 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 ofloftiness and openn

9、ess of asbestos fiber.6. Apparatus6.1 Graduated Glass Cylinder6Meeting the followingspecification, as shown in Fig. 1:6.1.1Capacity 2 dm3(2000 cm3)Subdivisions 0.02 dm3(20 cm3)Inside diameter 80 cmWall thickness 3 mmTotal height 482 6 3mmHeight from inner bottom of base tothe 2000 cm3mark398 6 6mm6.

10、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.6.2 Mechanically Driven Inverter, for rotating the graduatedcylinder about a h

11、orizontal 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, or1This test method is under the jurisdiction of ASTM Committee C17 onFiber-Reinforced Cement Products and is the direct responsibility of

12、 SubcommitteeC17.03 on AsbestosCement Sheet Products and Accessories.Current edition approved June 1, 2004. Published July 2004. Originally approvedin 1989. Last previous edition approved in 1999 as C 1122 90 (1999).2Quebec Standard designation of chrysotile asbestos grades as determined byTest Meth

13、od D 3639.3Available 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.5Availabl

14、e from the Asbestos Institute, 1130 Sherbrooke St. West, Ste. 410,Montreal, QC Canada H3A 2M8.6Graduate cylinders supplied by the Scientific Glass Apparatus Co., Inc., 735Broad St., Bloomfield, NJ 07003, or their equivalent, have been found satisfactoryfor this application.1Copyright ASTM Internatio

15、nal, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.separate stoppers may be used provided the latter 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 sam

16、ple in accordance with Test MethodsD 2590, in the case of chrysotile asbestos, or D 3879 in thecase of amphibole asbestos.8.2 Test Specimens:8.2.1 Refer to Table 1 for specimen sizes required. Take twospecimens in each case.9. Procedure9.1 Fill the cylinder with distilled water7or Type IV reagentwat

17、er as defined in Specification D 1193, at 25 6 2C (77 63F) to the 1000 cm3mark of the cylinder.9.2 Pour the test specimen into the cylinder and add distilledor reagent water to the 2000 cm3mark.9.3 Clamp the cylinder on the mechanical inverter androtate through 6.3 rad (360) 30 times in one min. Let

18、 stand for10 min and then repeat the rotation cycle.9.4 Remove the cylinder and place carefully on a levelledvibration free table.7It is recognized that clean water from different locations may affect resultsslightly. Therefore, when results from one laboratory will be compared with theresults of an

19、other laboratory, distilled water should be used.FIG. 1 Graduated CylinderFIG. 2 Mechanically Driven InverterFIG. 3 Alternative Design of Mechanically Driven InverterTABLE 1 Specimen Size and Test DurationGroup2No.Specimenweight, gSedimentation timeks h4to6 306 0.1 7.2 2726 0.1 14.4 4C 1122 90 (2004

20、)e129.5 Record the wet volume of the fiber suspended in waterin cm3after 7.2 ks (2 h) for Groups 4, 5, and 6 fibers, and 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 acc

21、eptable results express-ing the wet volume in units of cm3(or mL).10.2 Fully identify the samples as to grade and origin.11. Precision and Bias811.1 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-appara

22、tus-operator-dayprecision (repeatability) is6 4 % (two sigma limits expressedin units of percentage) (2S %) as defined in Practice E 177 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 f

23、ile at ASTMHeadquarters, and a copy is available upon request.11.3 Bias:11.3.1 No justifiable statement can be made on the 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 bul

24、k; wetvolumeASTM International takes 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

25、 rights, are entirely their own responsibility.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 additi

26、onal standardsand should be addressed 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

27、ASTM Committee on Standards, at the address 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).8Supporting data is available from ASTM International Headquarters. RequestRR: C17-1001.C 1122 90 (2004)e13