ASTM C1124-1990(2004)e1 Standard Test Method for Kerosene Retention of Asbestos《石棉煤油保存的试验方法》.pdf

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1、Designation: C 1124 90 (Reapproved 2004)e1Standard Test Method forKerosene Retention of Asbestos1This standard is issued under the fixed designation C 1124; the number immediately following the designation indicates the year oforiginal adoption or, in the case of revision, the year of last revision.

2、 A number 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 8.1 to 1.3 in September 2004.1. Scope1.1 This test method covers the determination of the kero-sene reten

3、tion capacity of asbestos fiber by filtering aftermixing and measuring the volume of liquid retained bydifference.1.2 The values stated in inch-pound units are to be regardedas the standard. The values given in parentheses are forinformation only.1.3 WarningBreathing of asbestos dust is hazardous.As

4、bestos and asbestos products present demonstrated healthrisks for 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 “Saf

5、e Useof Chrysotile Asbestos: A Manual on Preventive and ControlMeasures.”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

6、 the applica-bility of regulatory limitations prior to use. For a specifichazard warning, see 1.3.2. Referenced Documents2.1 ASTM Standards:3D 1655 Specification for Aviation Turbine FuelsD 2590 Test Method for Sampling Chrysotile AsbestosD 2946 Terminology Relating to AsbestosD 3879 Test Method for

7、 Sampling Amphibole AsbestosE 11 Specification for Wire-Cloth Sieves for Testing Pur-posesE 177 Practice for Use of the Terms Precision and Bias inASTM Test Methods2.2 Other Standards:US Federal Specifications, VV-K-211 d, Kerosene4Canadian Government Specifications Board CAN 2-3.3-M85 Kerosene5Unit

8、ed Kingdom, Ministry of Defense Specification DEF-2403-A63. Terminology3.1 DefinitionsRefer to Terminology D 2946.4. Summary of Test Method4.1 A slurry of asbestos fiber is formed by mixing in aknown volume of kerosene. The slurry is then drained on astandard 177 m (U.S. No. 80) screen as defined in

9、 Specifica-tion E 11, and the kerosene that drains out in 15 min ismeasured. The quantity of kerosene retained is obtained bydifference.5. Significance and Use5.1 The kerosene retention value is an indication of thedegree of fiberization and of the absorptivity of a given gradeof asbestos.5.2 Since

10、the retention of the fibrous fractions is muchgreater than that of the non-fibrous fractions, this test methodmay be used to compare the fibrous content of otherwisesimilar grades of asbestos.6. Apparatus6.1 Kerosene Drainage ApparatusDescribed in Fig. 1 andFig. 2.7. Reagents and Materials7.1 Kerose

11、ne, meeting one of the following specifications:7.1.1 US Federal Specifications, VV-K-211 d, Kerosene.1This test method is under the jurisdiction of ASTM Committee C17 onFiber-Reinforced Cement Products and is the direct responsibility of SubcommitteeC17.03 on AsbestosCement Sheet Products and Acces

12、sories.Current edition approved June 1, 2004. Published July 2004. Originally approvedin 1989. Last previous edition approved in 1999 as C 1124 90 (1999).2Available from The Asbestos Institute, http:/ referenced ASTM standards, visit the ASTM website, www.astm.org, orcontact ASTM Customer Service at

13、 serviceastm.org. For Annual Book of ASTMStandards volume information, refer to the standards Document Summary page onthe ASTM website.4Available from the Superintendent of Documents, U.S. Government PrintingOffice, Washington, DC 20402.5Available from The Secretary, Canadian General Standard Board,

14、 Ottawa,ONT, Canada K1A 1G6.6Available from Her Majestys Stationery Office, London, England.1Copyright ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.7.1.2 Jet A Kerosine specified in Specification D 1655.7.1.3 United Kingdom, Ministry of Defe

15、nse SpecificationDEF-2403-A.7.1.4 Kerosine CGSB Spec CAN 2-3.3-M85.8. Hazards8.1 Warningsee 1.3.9. Sampling, Test Specimens, and Test Units9.1 Sampling:9.1.1 Take samples in accordance with Test MethodsD 2590 in the case of chrysotile asbestos or Test MethodD 3879 in the case of amphibole asbestos.9

16、.2 Test Specimens:9.2.1 Two specimens each of 50 6 0.05 g are required.10. Procedure10.1 Put a 50 g specimen into a 400 cm3beaker and add 3256 1cm3of kerosene.10.2 Mix with a spatula for 120 s (2 min).10.3 Wet the drainage cylinder and screen with keroseneand drain 1 min.10.4 Place a 250-cm3graduate

17、d cylinder beneath the drain-age cylinder outlet.10.5 Immediately transfer the slurry in one continuousmotion to the drainage cylinder.10.6 Start a stopwatch simultaneously.10.7 After draining for 900 s (15 min), read the volume ofkerosene drained into the graduate, and record this value to theneare

18、st cm3.10.8 Discard the asbestos retained on the screen, rinse cleanwith running hot water, and dry the apparatus.7Thus it will beready for the next test.10.9 Repeat this procedure with the second specimen.11. Calculation11.1 For each of the two readings, subtract the valueobtained, in cm3, from the

19、 initial quantity of kerosene (325 cm3). Multiply these differences by two to obtain the keroseneretention values per 100 g of asbestos fiber.11.2 ExampleIf the reading on the graduated cylinder was215 cm3, then the kerosene retentionvalue = (325215) 3 2 = 220 cm3/100 g.12. Report12.1 Report the ave

20、rage of two kerosene retention values incm3/100 g.12.2 Fully identify the sample tested as to designation andorigin.7A jet of clean dry compressed air may be used to accelerate the drying.FIG. 1 Kerosene Retention Apparatus AssemblyFIG. 2 Retention Apparatus DetailC 1124 90 (2004)e1213. Precision an

21、d Bias13.1 Acceptance of Results:13.1.1 Results on two specimens must agree within 2 % ofthe average. If this is not attained, repeat the test until tworesults within 2 % from the average are obtained.13.2 Precision:13.2.1 The single-laboratory, multi-operator-apparatusdayprecision (repeatability) i

22、s 62 % (two sigma limits expressedin units of percentage) as defined in Practice E 177 over therange of 200 to 400 cm3/100 g.13.3 Bias:13.3.1 No justifiable statement on the bias of this testmethod can be made since the true values cannot be establishedby an accepted referee method.13.3.2 A partial

23、verification of the repeatability that con-firmed the above data is on file. A copy is available uponrequest.814. Keywords14.1 absorption; asbestos; kerosene; kerosene retention; oil;oil absorption; retention capacityASTM International takes no position respecting the validity of any patent rights a

24、sserted 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 responsibility.This standard is subject to revision at any time

25、 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 to ASTM International Headquarters. Your comments will re

26、ceive 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 address shown below.This standard is copyrighted by ASTM In

27、ternational, 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: C17-1002.C 1124 90 (2004)e13