ASTM C1230-1996(2009) Standard Test Method for Performing Tension Tests on Glass-Fiber Reinforced Concrete (GFRC) Bonding Pads《玻璃纤维增强混凝土(GFRC)结合区的拉伸试验实施用标准试验方法》.pdf

《ASTM C1230-1996(2009) Standard Test Method for Performing Tension Tests on Glass-Fiber Reinforced Concrete (GFRC) Bonding Pads《玻璃纤维增强混凝土(GFRC)结合区的拉伸试验实施用标准试验方法》.pdf》由会员分享，可在线阅读，更多相关《ASTM C1230-1996(2009) Standard Test Method for Performing Tension Tests on Glass-Fiber Reinforced Concrete (GFRC) Bonding Pads《玻璃纤维增强混凝土(GFRC)结合区的拉伸试验实施用标准试验方法》.pdf（3页珍藏版）》请在麦多课文档分享上搜索。

1、Designation: C 1230 96 (Reapproved 2009)Standard Test Method forPerforming Tension Tests on Glass-Fiber ReinforcedConcrete (GFRC) Bonding Pads1This standard is issued under the fixed designation C 1230; the number immediately following the designation indicates the year oforiginal adoption or, in th

2、e 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.1. Scope1.1 This test method covers determination of the tensile loadcapacity of glass-fiber reinf

3、orced concrete (GFRC) bondingpads used for attaching steel anchors to GFRC architecturalpanels.1.2 The values stated in inch-pound units are to be regardedas standard. The values given in parentheses are mathematicalconversions to SI units that are provided for information onlyand are not considered

4、 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 this standard to establish appro-priate safety and health practices and determine the applica-bility of regulatory limitations prior to use.2. Re

5、ferenced Documents2.1 ASTM Standards:2D76 Specification for Tensile Testing Machines for TextilesE4 Practices for Force Verification of Testing Machines3. Significance and Use3.1 Tensile loads determined by this test method are usefulfor quality control of GFRC architectural panels manufacturedusing

6、 the steel panel frame support design. In addition, testresults may be used to verify compliance with governingspecifications, research and development, and generating datafor use in product design.4. Apparatus4.1 Testing Machine, a properly calibrated testing machinethat can be operated at constant

7、 rates of crosshead motion andin which the error in the force measuring system shall notexceed 61.0 % of the maximum force expected to be mea-sured. Equip the testing machine with a deflection measuringand recording device. The stiffness of the testing machine shallbe such that the total elastic def

8、ormation of the system does notexceed 1.0 % of the total deflection of the test specimen duringthe test, or appropriate corrections shall be made. The force-indicating mechanism shall be essentially free of inertial lag atthe crosshead rate used. The accuracy of the testing machineshall be verified

9、in accordance with Practices E4and Speci-fication D76.4.2 Loading FixtureThe load fixture for applying tensileload is shown schematically in Fig. 1. It consists of a12 in.(13-mm) thick steel base plate. A suitable mechanism for testfixtures is shown in Fig. 2 and Fig. 3. The design of the loadingfix

10、ture shall be such that the specimen is rigidly attached to thebase support. In particular, the section of the specimen adjacentto the flex anchor shall not be allowed to bend while the anchoris being pulled in tension, in order to avoid force eccentricity.4.3 Gripping Device, a suitable mechanical

11、gripping deviceor jaws to grip the steel anchor. Use a universal joint betweenthe grip and crosshead of the testing machine to ensure theapplication of a tensile load for the duration of the test.5. Sampling5.1 The sampling method shall be in accordance withgoverning specifications.6. Test Specimen6

12、.1 Saw the test specimens from a test board panel preparedat the same time and in a manner identical to productionpanels. Saw the test specimens so they are nominally 12 in.square, the anchor is in the center, and the specimen edges area sufficient distance from the bonding pad to allow supportdurin

13、g loading. Fig. 4 shows the test specimen.7. Conditioning7.1 Condition specimens under the same conditions asproduction panels prior to test.8. Procedure8.1 Align the specimen in the center of the base plate orbase support.8.2 Rigidly clamp the specimen to the base plate.1This test method is under t

14、he jurisdiction of ASTM Committee C27 on PrecastConcrete Products and is the direct responsibility of Subcommittee C27.40 on GlassFiber Reinforced Concrete.Current edition approved May 1, 2009. Published May 2009. Originallyapproved in 1993. Last previous edition approved in 2004 as C 1230 96(2004).

15、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.1Copyright ASTM International, 100 Barr Harbor Drive, PO Box

16、C700, West Conshohocken, PA 19428-2959, United States.8.3 Grip the anchor and apply tensile loads to the anchor ata pull-off displacement rate of 0.2 in. (5 mm)/min until failure.8.4 Failure is defined as the maximum load, or when thereis visible distress to the GFRC bonding pad. For small diametera

17、nchors (316 in. (5 mm) or less) or for certain bonding padgeometries, local failure of the glass-fiber reinforced concretehas been observed at the anchor heel, even though the anchorcontinues to take additional load. In these instances there is ameasurable drop in load, observed on the load deflecti

18、on graph.8.5 Record the maximum force and corresponding displace-ment attained prior to failure of the bonding pad.8.6 Measure the dimensions of the bonding pad at twolocations 90 to each other, accurate to the nearest 0.1 in. (2.5mm).8.7 Measure the average thickness of bonding pad over theanchor w

19、hen wet with pin gauge or when dry with caliper.9. Report9.1 Report the following information:9.1.1 Specimen identification number,9.1.2 Age of specimen (if artificially aged, include descrip-tion of process with time, temperature, etc.),9.1.3 Specimen dimensions,9.1.4 Anchor size,9.1.5 Bonding pad

20、dimensions including thickness over thetop of the anchor,9.1.6 Maximum applied force, pounds-force (or Newtons),9.1.7 Displacement at maximum load, inches, and9.1.8 Mode of failure.10. Precision and Bias10.1 PrecisionThe precision of the procedure in TestMethod C 1230 for measuring the tensile load

21、capacity ofGFRC bonding pads is being determined.10.2 BiasSince there is no accepted reference materialsuitable for determining the bias for the procedure in TestMethod C 1230 for measuring the tensile load capacity, biashas not been determined.11. Keywords11.1 anchor; bonding pads; bonding strength

22、; tensile loadNOTE 1Manufacture test specimens to keep flex anchor legs asvertical as possible. Support the legs if necessary during curing of thematrix.FIG. 1 Tension Test FixtureFIG. 2 Suitable Test FixtureC 1230 96 (2009)2ASTM International takes no position respecting the validity of any patent

23、rights asserted in connection 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

24、any time by the responsible 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

25、 will receive careful consideration 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

26、 ASTM International, 100 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).FIG. 3 Suitable Test FixtureFIG. 4 Test SpecimenC 1230 96 (2009)3