1、Designation:F191407(Reapproved 2011)Standard Test Methods forShort-Term Indentation and Residual Indentation ofResilient Floor Covering1This standard is issued under the fixed designation F1914;the number immediately following the designation indicates the year oforiginal adoption or,in the case of
2、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.1.Scope1.1 This test method covers procedures to determine short-term indentation and residual indentation of res
3、ilient flooring,when subjected to concentrated loads.1.2 The test methods appear in the following order:SectionIndentation by McBurney2Test4 to 10Indentation and Residual Indentation11 to 151.3 There are two procedures with their respective appara-tus.The first(McBurney Test)is described in Sections
4、 4 to 10and is restricted to a spherical foot.It is only used for initialindentation measurements of VCT.The second is described inSections 11 to 15 and has interchangeable feet with variablegeometry.It is used to measure initial and residual indentation.1.4 The values stated in inch-pound units are
5、 to be regardedas standard.The values given in parentheses are mathematicalconversions to SI units that are provided for information onlyand are not considered standard.1.5 This standard does not purport to address all of thesafety concerns,if any,associated with its use.It is theresponsibility of t
6、he 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:3E691 Practice for Conducting an Interlaboratory Study toDetermine the Precision of a Test MethodE2251 Speci
7、fication for Liquid-in-Glass ASTM Thermom-eters with Low-Hazard Precision LiquidsF141 Terminology Relating to Resilient Floor CoveringsF1066 Specification for Vinyl Composition Floor TileF1303 Specification for Sheet Vinyl Floor Covering withBackingF1700 Specification for Solid Vinyl Floor TileF1913
8、 Specification for Vinyl Sheet Floor Covering WithoutBacking3.Terminology3.1 DefinitionsFor definitions of terms used in this testmethod,refer to Terminology F141.INITIAL INDENTATION MEASUREMENTS OF VCT(MCBURNEY TEST)24.Significance and Use4.1 This test method measures short-term indentation ofresil
9、ient flooring and is useful as a predictor of performance inactual installations over time.4.2 The slope,m,of a log-log plot indentation(I)versustime(T),is related to the indentation of tile in service.The115F(46C)indentation is a measure of the tendency of thetile to indent at temperatures above 77
10、F(25C).5.Apparatus5.1 Apparatus2The indentation tester is a spherical footdevice consisting essentially of a rigidly mounted indentoracting under an initial load of 2.00 6 0.02 lbf(8.90 6 0.09 N)and a total deadweight load of 30.00 lbf 6 0.25 lbf(133.45 61.11 N)with a suitable dial indicator,calibra
11、ted in 0.0005 in.(0.01 mm)increments.The spherical foot shall be 0.250 60.0005 in.(6.35 6 0.01 mm)in diameter.A suitable apparatusis shown in Fig.1.5.2 Flat Glass Plate,of 0.25 in.(6.35 mm)minimumthickness for supporting the specimen and tester during test.5.3 Timing Device that will indicate the ti
12、me in seconds.5.4 Thermometer,calibrated as in Specification E2251.1This test method is under the jurisdiction ofASTM Committee F06 on ResilientFloor Coverings and is the direct responsibility of Subcommittee F06.30 on TestMethods-Performance.Current edition approved Nov.1,2011.Published November 20
13、11.Originallyapproved in 1998.Last previous edition approved in 2007 as F191407.DOI:10.1520/F1914-07R11.2The sole source of supply of the McBurney Indentation Tester known to thecommittee at this time is Frazier Precision Co,Gaithersburg,MD.If you are awareof alternative suppliers,please provide thi
14、s information to ASTM InternationalHeadquarters.Your comments will receive careful consideration at a meeting of theresponsible technical committee1,which you may attend.3For referenced ASTM standards,visit the ASTM website,www.astm.org,orcontact ASTM Customer Service at serviceastm.org.For Annual B
15、ook of ASTMStandards volume information,refer to the standards Document Summary page onthe ASTM website.Copyright ASTM International,100 Barr Harbor Drive,PO Box C700,West Conshohocken,PA 19428-2959.United States1 5.5 Circular Plexiglas Template,3.50 in.(88.9 mm)indiameter,0.25 in.(6.35 mm)thick and
16、 having a 0.3125 in.(7.94 mm)diameter hole drilled in the center and a 0.75 in.(19.05 mm)diameter concentric circle etched on the face.5.6 Water Baths,or air atmosphere maintained at 77 60.9F(25 6 0.5C)or 115 6 1F(46 6 0.5C).6.Test Specimens6.1 The test specimen shall be a full tile,usually 12 by 12 in.(approximately 305 by 305 mm)or 9 by 9 in.(approximately230 by 230 mm).Larger tiles shall be cut to one of the abovesizes.7.Conditioning7.1 For testing in air,condition the specimen(s)for 1 h at t
