ASTM_C_1123_-_C_1123M_-_90_2015.pdf

Designation:C1123/C1123M90(Reapproved 2015)Standard Test Method forCompressibility and Recovery of Asbestos1This standard is issued under the fixed designation C1123/C1123M;the number immediately following the designation indicates the yearof original adoption or,in the case of revision,the year of last revision.A number in parentheses indicates the year of last reapproval.A superscript epsilon()indicates an editorial change since the last revision or reapproval.1.Scope1.1 This test method covers the determination of the bulkingfactor of spinning grade fiber.These include grade 4A andlonger.21.2 Results obtained on other grades may be considered asan evaluation of their bulk fiber resilience.1.3 The values stated in either SI units or inch-pound unitsare to be regarded separately as standard.The values stated ineach system 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.1.4 WarningBreathing of asbestos dust is hazardous.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“Safe Useof Chrysotile Asbestos:A Manual on Preventive and ControlMeasures.”31.5 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 the applica-bility of regulatory limitations prior to use.For specific hazardwarning,see 1.4.2.Referenced Documents2.1 ASTM Standards:4D2590 Test Method for Sampling Chrysotile AsbestosD2946 Terminology for Asbestos and AsbestosCementProductsD3879 Test Method for Sampling Amphibole Asbestos(Withdrawn 2009)5E177 Practice for Use of the Terms Precision and Bias inASTM Test Methods3.Terminology3.1 Definitions:Terms relating to asbestos are found inTerminology D2946.4.Summary of Test Method4.1 The height of a weighed specimen obtained in compli-ance with sampling Test Methods D2590 or D3879 is deter-mined under a heavy ram in a graduated cylinder.The ram isthen removed and the height of the specimen is again mea-sured.Measurements are repeated until no change is noted inthe readings.4.2 The heights of the specimen under pressure,and afterpressure release,are termed“compression”and“recovery,”respectively.The percentage difference is reported as“percentrecovery.”5.Significance and Use5.1 The value of compression(as described in 9.5)isproportional to the bulk under moderate pressure.5.2 The value of percent recovery is a measure of springi-ness or bulk fiber resilience.6.Apparatus6.1 Graduated Cylinder and Weighed Ram,as described inFig.1.NOTE1The scale shall be calibrated in SI units,and alternatively inother units.7.Hazards7.1 Warningsee 1.4.1This test method is under the jurisdiction of ASTM Committee C17 onFiber-Reinforced Cement Products and is the direct responsibility of SubcommitteeC17.03 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 C1123 90(2009)1.DOI:10.1520/C1123_C1123M-90R15.2QAMA standard designation of chrysolite asbestos grades.Available fromAsbestos Institute,1130 W.Sherbrooke St.,Suite 410,Montreal,QC Canada,H3A2M8.3Available 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.5The last approved version of this historical standard is referenced onwww.astm.org.Copyright ASTM International,100 Barr Harbor Drive,PO Box C700,West Conshohocken,PA 19428-2959.United States1 8.Sampling,Test Specimens,and Test Units8.1 SamplingTake samples in accordance with TestMethod D2590 in the case of chrysotile asbestos,or TestMethod D3879 in the case of amphibole asbestos.8.2 Test SpecimensTake two specimens of 113.4 6 0.1 g46 0.005 oz each.9.Procedure9.1 Pour a specimen into the graduated cylinder.NOTE2It may be advantageous to use a wide-mouth funnel forpouring the specimen.NOTE3It may be necessary to obstruct the observation slot in the wallof the graduated cylinder while pouring in the shorter fibered,and themore free-flowing grades of asbestos,to prevent specimen loss.This maybe done by wedging a wooden rod of appropriate thickness and length,into the slot.Take care that the obstruction does not project inside thecylinder.9.2 Fit the ram and cap assembly into position and simplyallow the ram to compress the specimen under the force ofgravity for 60 s(1 min).9.3 If the observation slot was obstructed during specimenadmission,remove the obstruction.Note