ASTM_C_1243_-_93_2015e1.pdf

Designation:C124393(Reapproved 2015)1Standard Test Method forRelative Resistance to Deep Abrasive Wear of UnglazedCeramic Tile by Rotating Disc1This standard is issued under the fixed designation C1243;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 parentheses indicates the year of last reapproval.Asuperscript epsilon()indicates an editorial change since the last revision or reapproval.1NOTECorrected Eq 1 editorially in Feb.2017.1.Scope1.1 This test method covers the deep abrasive wear bymeasuring the loss of volume resulting from abrasion ofunglazed ceramic tile under given conditions by means of arotating disc and the use of abrasive material.1.2 The values stated in SI units are to be regarded asstandard.No other units of measurement are included in thisstandard.1.3 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.2.Referenced Documents2.1 ASTM Standards:2C242 Terminology of Ceramic Whitewares and RelatedProductsC448 Test Methods for Abrasion Resistance of PorcelainEnamelsC501 Test Method for Relative Resistance to Wear ofUnglazed Ceramic Tile by the Taber AbraserC1027 Test Method for Determining Visible Abrasion Re-sistance of Glazed Ceramic Tile3.Terminology3.1 Definitions:3.1.1 For definitions of terms used in this test method,seeTerminology C242.4.Significance and Use4.1 This test method provides the means to measure thepotential resistance to wear of unglazed ceramic tile intendedfor floor coverings.This test method does not consider physicalappearance but is intended to measure durability.See TestMethod C1027 for the determination of visible abrasionresistance of glazed ceramic tile.4.1.1 See Test Method C501 for an alternative method todetermine deep abrasion.5.Apparatus35.1 Abrasion apparatus(see Fig.1)consisting essentially ofa rotating disc,a storage hopper with a dispensing device forthe abrasive material,a test specimen support,and a counter-weight.The disc is made of Fe 360Asteel(ISO 630-1980)witha diameter of 200 6 0.2 mm and thickness at the edge of 10 60.1 mm,and with a rate of revolution of 75 r/min.The pressurewith which test specimens are held against the steel disc isdetermined by calibrating the apparatus against float glass(bathside).The pressure is adjusted such that,after 150revolutions,a chord of 24 6 0.5 mm is produced.NOTE1For the specification of float glass,see Test Method C448,Table A1.4.5.1.1 When the disc diameter has worn to 199 mm,the steeldisc shall be replaced.5.2 A linear measuring gage capable of measuring to 0.1mm.5.3 Abrasive MaterialWhite fused aluminum oxide ofgrain size 80(32 GB 1971)FEPA Bonded Abrasive Grain SizeStandard Grits 8-220.6.Test Specimen6.1 Types of Test SpecimensTests shall be carried outusing whole tiles or test specimens of suitable dimensions.1This test method is under the jurisdiction ofASTM Committee C21 on CeramicWhitewares and Related Productsand is the direct responsibility of SubcommitteeC21.06 on Ceramic Tile.Current edition approved Dec.15,2015.Published December 2015.Originallyapproved in 1993.Last previous edition approved in 2015 as C1243-93(2015).DOI:10.1520/C1243-93R15E01.2For 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.3The sole source of supply of the apparatus known to the committee at this timeis Gabrielli S.R.L.,Box 218,50019 Sesto Florentino,Florence,Italy,Fax:55-42-15-654.If you are aware of alternative suppliers,please provide thisinformation to ASTM International Headquarters.Your comments will receivecareful consideration at a meeting of the responsible technical committee,1whichyou may attend.Copyright ASTM International,100 Barr Harbor Drive,PO Box C700,West Conshohocken,PA 19428-2959.United StatesThis international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for theDevelopment of International Standards,Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade(TBT)Committee.1 Before testing,small specimens shall be fixed with an adhesiveonto a larger background,avoiding joints where possible.6.2 SamplingAminimum of five tiles shall be tested.Onlytile that show no visible warpage when checked with astraightedge shall be used.7.Procedure7.1 Place a test specimen in the apparatus so that it istangential against the disc.Ensure that the feed of abrasivematerial into the grinding zone is uniform at a rate of 100 g 610 g per 100 revolutions.7.2 Rotate the steel disc for 150 revolutions