1、Designation: F 1265 03aStandard Test Method forResistance to Impact for Resilient Floor Tile1This standard is issued under the fixed designation F 1265; the number immediately following the designation indicates the year oforiginal adoption or, in the case of revision, the year of last revision. A n
2、umber in parentheses indicates the year of last reapproval. Asuperscript epsilon (e) 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 regardeda
3、s the standard. The values in parentheses are for informationonly.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 app
4、lica-bility of regulatory limitaions prior to use.2. Referenced Documents2.1 ASTM Standards:F 141 Terminology Relating to Resilient Floor Coverings2F 1066 Specification for Vinyl Composition Floor Tile23. Terminology3.1 DefinitionsFor definitions of terms used in this testmethod refer to Terminology
5、 F 141.4. 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 theenvironment in which the tile
6、 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, and a device for
7、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 firmly at
8、tached 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 weig
9、hing 0.350 6 0.005 lb (0.159 6 0.002 kg)shall be used and having a hemispherical end, for testing316 in.(0.476 cm) and14 in. (0.635 cm) material.5.1.3 Slotted Tube, graduated in14 in. (0.635 cm) divisions,about 20 in. (50.8 cm) in height and of sufficient size to permitthe weight to fall through it
10、freely, is mounted 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-
11、in. (15 cm by15 cm) portion 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
12、1.8F (2 6 1C) unless otherwise 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 coati
13、ng of zinc oxide paste over the centerof the wearing surface of the specimen so as to form a circle 3618 in. (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 willstrike the specime
14、n 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 its1This test method is under jurisdiction of ASTM F06 Committee on Resilient
15、Floor Coverings and is the direct responsibility of Subcommittee F06.30 on TestMethodsPerformance.Current edition approved Sept. 10, 2003. Published November 2003. Originallyapproved in 1989. Last previous edition approved in 2003 as F 1265 03.2Annual Book of ASTM Standards, Vol 15.04.1Copyright AST
16、M International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.original 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
17、or crack development beyond the circle.Examine the coated surface under good illumination withoutflexing the specimen. Test a second specimen by placing thespecimen at 90 to that of the first sequence.8.3 When the specimen is conditioned in water, remove itfrom the water, immediately wipe dry, and,
18、within 15 s, coatwith zinc oxide paste as described in 8.2. Immediately test asdescribed in 8.2.9. Report9.1 Unless otherwise specified in the detailed specification,two specimens from each test unit shall be tested. Specimensshall be positioned 90 from each other.9.2 The weight used, the height fro
19、m which the weight wasdropped, and the number of drops shall be recorded.9.3 Record number of specimens with number that passedand failed. If specimen failed, note number of drops to failure,8.2.FIG. 1 Impact TesterF 1265 03a210. Precision and Bias10.1 No statement is made about either the precision
20、 or biasof this test method since the results merely state whether thereis conformance to the criteria for success specified in theprocedure.311. Keywords11.1 crack; impact; resilient; steel ball; tileASTM International takes no position respecting the validity of any patent rights asserted in conne
21、ction with any item mentionedin this standard. Users of this standard are expressly advised that determination of the validity of any such patent rights, and the riskof infringement of such rights, are entirely their own responsibility.This standard is subject to revision at any time by the responsi
22、ble technical committee and must be reviewed every five years andif not revised, either reapproved or withdrawn. Your comments are invited either for revision of this standard or for additional standardsand should be addressed to ASTM International Headquarters. Your comments will receive careful co
23、nsideration at a meeting of theresponsible technical committee, which you may attend. If you feel that your comments have not received a fair hearing you shouldmake your views known to the ASTM Committee on Standards, at the address shown below.This standard is copyrighted by ASTM International, 100
24、 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959,United States. Individual reprints (single or multiple copies) of this standard may be obtained by contacting ASTM at the aboveaddress or at 610-832-9585 (phone), 610-832-9555 (fax), or serviceastm.org (e-mail); or through the ASTM website(www.astm.org).3A synopsis of the round robin test data is available from ASTM Headquarters.Request RR:F06-1000.F 1265 03a3
