1、Designation:C112589(Reapproved 2015)Standard Test Method forPenetration Index of Asbestos1This standard is issued under the fixed designation C1125;the number immediately following the designation indicates the year oforiginal adoption or,in the case of revision,the year of last revision.A number in
2、 parentheses indicates the year of last reapproval.Asuperscript epsilon()indicates an editorial change since the last revision or reapproval.1.Scope1.1 To determine the efficiency with which asbestos fibersincrease the consistency when mixed into a liquid asphalticvehicle,relative to fibers chosen a
3、s standard.1.2 This test method is applicable to Quebec StandardGroup 7 asbestos fibers as determined by Test Method D3639/D3639M.1.3 The values stated in SI units are to be regarded asstandard.No other units of measurement are included in thisstandard.1.4 WarningBreathing of asbestos dust is hazard
4、ous.Asbestos 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“Sa
5、fe Useof Chrysotile Asbestos:A Manual on Preventive and ControlMeasures.”21.5 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 th
6、e applica-bility of regulatory limitations prior to use.For a specifichazard warning,see 1.4.2.Referenced Documents2.1 ASTM Standards:3D217 Test Methods for Cone Penetration of LubricatingGreaseD396 Specification for Fuel OilsD2026/D2026M Specification for Cutback Asphalt(Slow-Curing Type)D2027/D202
7、7M SpecificationforCutbackAsphalt(Medium-Curing Type)D2590/D2590M Test Method for Sampling Chrysotile As-bestosD2946 Terminology for Asbestos and AsbestosCementProductsD3639/D3639M Test Method for Classification of Asbestosby Quebec Standard TestD3879 Test Method for Sampling Amphibole Asbestos(With
8、drawn 2009)4E177 Practice for Use of the Terms Precision and Bias inASTM Test Methods2.2 Other Standard:Qubec Standard Designation of Chrysotile Asbestos FiberGrades53.Terminology3.1 DefinitionsRefer to Terminology D2946.4.Significance and Use4.1 The objective of the test is to determine what quanti
9、ty ofthe fiber under evaluation must be mixed with 100 g of cutbackasphalt to give the same penetration as a target penetration.4.2 The target penetration is determined with the samecutback asphalt as used for the test using standard calibratedasbestos fiber.4.3 This test method determines the effic
10、iency with whichthe asbestos tested will increase the consistency when mixedwith a liquid asphalt.5.Apparatus5.1 PenetrometerCalibrated in 0.1 mm divisions and fittedwith a 102.5 6 0.05 g grease penetration cone conforming torequirements(see Note 1)stated in Test Method D217.NOTE1An automatic clutch
11、 is a permissible optional accessory.5.2 Asphalt Sample Cups55 mm in diameter and 35 mmin height,made of seamless tin plate as described in TestMethod D217.1This test method is under the jurisdiction of ASTM Committee C17 onFiber-Reinforced Cement Products and is the direct responsibility of Subcomm
12、itteeC17.03 on Asbestos-Cement Sheet Products and Accessories.Current edition approved July 1,2015.Published July 2015.Originally approvedin 1989.Last previous edition approved in 2009 as C1125 89(2009).DOI:10.1520/C1125-89R15.2Available from The Asbestos Institute,http:/ referenced ASTM standards,v
13、isit 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.4The last approved version of this historical standard is referenced onwww.astm.org.5Available fro
14、m the Asbestos Institute,1130 Sherbrooke St.West,Suite 410,Montreal,QC Canada H3A 2M8.Copyright ASTM International,100 Barr Harbor Drive,PO Box C700,West Conshohocken,PA 19428-2959.United States1 6.Reagents and Materials6.1 Cutback AsphaltContaining non-volatile solvent.NOTE2Cutback asphalt SC-70 sp
15、ecified in Specification D2026/D2026M,or MC-0 cutback asphalt specified in Specification D2027/D2027M,have been found satisfactory.NOTE3The workability of the above cutback asphalts can beimproved by dilution with No.2 fuel oil as specified in SpecificationD396,up to a proportion of13with SC-70 or15
16、with MC-0,by weight.6.2 Standardized Asbestos FiberOf known penetrationindex.67.Hazards7.1 Warning1.4.8.Sampling,Test Specimens and Test Units8.1 SamplingTake samples in accordance with Test Meth-ods D2590/D2590M in the case of chrysotile asbestos or TestMethod D3879 in the case of amphibole asbestos.8.2 Test SpecimensThe quantity of asbestos required is afunction of its penetration index.The quantity required willusually range between 20 to 100 g for each trial.The numberof trials required is g