1、Designation:F126503a(Reapproved 2013)Standard Test Method forResistance to Impact for Resilient Floor Tile1This standard is issued under the fixed designation F1265;the number immediately following the designation indicates the year oforiginal adoption or,in the case of revision,the year of last rev
2、ision.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 measures the resistance to impact ofresilient floor tile.1.2 The values stated in inch-pound units are to be regar
3、dedas standard.The values given in parentheses are mathematicalconversions to SI units that are provided for information onlyand are not considered standard.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 t
4、his 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:2F141 Terminology Relating to Resilient Floor Coverings3.Terminology3.1 DefinitionsFor definitions of terms used in this
5、 testmethod refer to Terminology F141.4.Significance and Use4.1 Resilient floor tile is subjected to impacts from objectsthat may be inadvertently dropped on to surfaces.It is notpossible to know all of the factors related to the droppedobjects(shape,weight,height of drop)or the condition of theenvi
6、ronment in which the tile is located(types of subfloor,degree of adhesion to subfloor,temperature).Therefore,thistest method can only provide a relative measure of resistance ofresilient floor tile to impact.5.Apparatus5.1 Impact Testing Apparatus,consisting essentially of aspecimen support,weights,
7、and a device for guiding a freelyfalling weight.A suitable apparatus is shown in Fig.1.5.1.1 Specimen Support,consisting of three steel balls,each1 in.in diameter,equally spaced over a rigid steel base so thata circle drawn through the center of the balls is 5 in.indiameter.The three balls shall be
8、firmly attached to the baseplate and the balls and the base plate shall weigh not less than10 lbs(4.5 kg).5.1.2 Steel Ball,1-in.(2.54-cm diameter)weighing 0.143 60.002 lb(0.065 6 0.001 kg)shall be used for testing18(0.317cm)and thinner floor covering;and a 1-in.(2.54 cm)diametersteel cylinder weighi
9、ng 0.350 6 0.005 lb(0.159 6 0.002 kg)shall be used and having a hemispherical end,for testing316in.(0.476 cm)and14in.(0.635 cm)material.5.1.3 Slotted Tube,graduated in14in.(0.635 cm)divisions,about 20 in.(50.8 cm)in height and of sufficient size to permitthe weight to fall through it freely,is mount
10、ed vertically overthe specimen support so as to guide the freely falling weight tothe center of the circle formed by the three balls.5.2 Zinc Oxide Paste,made by mixing powdered zinc oxidewith water to form a thin paste.6.Test Specimen6.1 The specimen shall consist of a 6-in.by 6-in.(15 cm by15 cm)p
11、ortion of the test unit.7.Conditioning7.1 Conditioning in AirCondition the specimens forphysical test in air maintained at 73.4 6 1.8F(25 6 1C)and50 6 5%relative humidity for not less than 24 h beforetesting.7.2 Conditioning in WaterMaintain the water termpera-ture at 77 6 1.8F(2 6 1C)unless otherwi
12、se specified.Immerse the specimen for not less than 15 min or more than 30min before testing.8.Procedure8.1 The height from which the weight is dropped and thenumber of times the weight is dropped shall be as specified inthe detailed specification.8.2 Spread a thin coating of zinc oxide paste over t
13、he centerof the wearing surface of the specimen so as to form a circle 3618in.(7.62 6 0.317 cm)in diameter.With the coated sidedown,immediately center the specimen over the three ballsattached to the specimen support so that the falling weight will1This test method is under jurisdiction of ASTM Comm
14、ittee F06 on ResilientFloor Coverings and is the direct responsibility of Subcommittee F06.30 on TestMethods-Performance.Current edition approved May 1,2013.Published May 2013.Originallyapproved in 1989.Last previous edition approved in 2008 as F1265 03a(2008).DOI:10.1520/F1265-03AR13.2For reference
15、d 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.Copyright ASTM International,100 Barr Harbor Drive,PO Box C700,West Conshohocken
16、,PA 19428-2959.United States1 strike the specimen at the center.Drop the required weight,5.1.2,freely through the guide tube from the specified heightthe specified number of times,8.1,so that it will strike thespecimen at the center.Carefully return the specimen to itsoriginal position after each drop.After the final drop,removethe specimen and examine for breaks or cracks that extendbeyond the coated circle.Failure is defined as a completebreakage of the tile or crack development beyond the cir
