ASTM D7005-2003 Standard Test Method for Determining the Bond Strength (Ply Adhesion) of Geocomposites《土工合成物粘结强度(层间附着力)测定的标准试验方法》.pdf
《ASTM D7005-2003 Standard Test Method for Determining the Bond Strength (Ply Adhesion) of Geocomposites《土工合成物粘结强度(层间附着力)测定的标准试验方法》.pdf》由会员分享,可在线阅读,更多相关《ASTM D7005-2003 Standard Test Method for Determining the Bond Strength (Ply Adhesion) of Geocomposites《土工合成物粘结强度(层间附着力)测定的标准试验方法》.pdf(3页珍藏版)》请在麦多课文档分享上搜索。
1、Designation: D 7005 03Standard Test Method forDetermining the Bond Strength (Ply Adhesion) ofGeocomposites1This standard is issued under the fixed designation D 7005; the number immediately following the designation indicates the year oforiginal adoption or, in the case of revision, the year of last
2、 revision. A number in parentheses indicates the year of last reapproval. Asuperscript epsilon (e) indicates an editorial change since the last revision or reapproval.1. Scope1.1 It has been widely discussed in the literature that bondstrength of flexible multi-ply materials is difficult to measurew
3、ith current technology. The above is recognized and accepted,since all known methods of measurement include the forcerequired to bend the separated layers, in addition to thatrequired to separate them. However, useful information can beobtained when one realizes that the bending force is includedand
4、 that direct comparison between different materials, or evenbetween the same materials of different thickness, cannot bemade. Also, conditioning that affects the moduli of the plieswill be reflected in the bond strength measurement.1.2 This index test method defines a procedure for compar-ing the bo
5、nd strength or ply adhesion of geocomposites. Thefocus is on geotextiles bonded to geonets or other types ofdrainage cores; for example, geomats, geospacers, etc. Otherpossible uses are geotextiles adhered or bonded to themselves,geomembranes, geogrids, or other dissimilar materials. Variousprocesse
6、s can make such laminates: adhesives, thermal bond-ing, stitch bonding, needling, spread coating, etc.1.3 The values stated in SI units are to be regarded as thestandard. The values given in parentheses are provided forinformation purposes only.1.4 This standard does not purport to address all of th
7、esafety 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. Specific precau-tionary statements are given in 7.1.1.2. Referenced D
8、ocuments2.1 ASTM Standards:2D 76 Specification for Tensile Testing Machines for TextilesD 413 Test Methods for Rubber PropertyAdhesion toFlexible SubstratesD 2905 Practice for Statements on Number of Specimensfor TextilesD 4354 Practice for Sampling of Geosynthetics for TestingD 4439 Terminology for
9、 GeosyntheticsE 4 Practices for Force Verification of Testing MachinesE 691 Practice for Conducting an Interlaboratory Study toDetermine the Precision of a Test MethodF 904 Test Method for Comparison of Bond Strength or PlyAdhesion of Similar Laminates from Flexible Materials3. Terminology3.1 Defini
10、tions:3.1.1 bond strength (ply adhesion)amount of force re-quired (per unit width) to separate plies of material or materialsin peeling mode plus the force to bend the plies.3.1.2 neckinglocalized reduction in cross section, whichmay occur in a material under tensile stress.3.1.3 geocompositea produ
11、ct composed of two or morematerials, at least one of which is a geosynthetic.3.1.4 geosynthetica planar product manufactured frompolymeric material used with soil, rock, earth, or other geo-technical engineering related material as an integral part of aman-made project structure, or system.3.1.5 geo
12、textilea permeable geosynthetic comprisedsolely of textiles.3.1.6 geoneta geosynthetic consisting of integrally con-nected parallel sets of ribs overlying similar sets at variousangles for planar drainage of liquids or gases.3.1.7 geomat/geospacerany three dimensional, polymericmaterial used with so
13、il, rock, or other geotechnical engineeringrelated material as an integral part of a man-made project,structure, or system.3.1.8 index testa test procedure, which may contain aknown bias but may be used to establish an order for a set ofspecimens with respect to the property of interest.3.1.9 machin
14、e directionthe direction in the plane of thefabric parallel to the direction of manufacture.1This test method is under the jurisdiction of ASTM Committee D35 onGeosynthetics and is the direct responsibility of Subcommittee D35.01 on Mechani-cal Properties.Current edition approved Dec. 1, 2003. Publi
15、shed December 2003.2For 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 Ha
16、rbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.3.1.10 atmosphere for testing geosyntheticsair maintainedat a relative humidity between 50 to 70 % and a temperature of21 6 2C (70 6 4F).4. Summary of Test Method4.1 Initially the geotextile is separated from its associatedmate
17、rial with care. The separated plies of the test specimen areplaced into the grips of a tensile testing machine. The grips arethen separated and the force required to further separate theplies is defined as bond strength.NOTE 1The force to bend the separated plies is included in themeasured force.5.
18、Significance and Use5.1 This test method is to be used as a quality control orquality assurance test. As a manufacturing quality control(MQC) test, it would generally be used by the geocompositeproduct manufacturer or fabricator. As a construction qualityassurance (CQA) test, it would be used by cer
19、tification orinspection organizations.5.2 This test method can also be used to verify if theadhesion or bond strength varies after exposure to variousincubation media in durability and/or chemical resistancetesting.5.3 Whatever use is to be associated with the test, it shouldbe understood that this
20、is an index test.NOTE 2There have been numerous attempts to relate the results ofthis test to the interface shearing resistance of the respective materialsdetermined per ASTM D 5321. To date, no relationships have beenestablished between the two properties.5.4 Test Method D XXXX for determining the
21、bondstrength (ply adhesion) strength may be used as an acceptancetest of commercial shipments of geocomposites, but caution isadvised since information about between-laboratory precisionis incomplete. Comparative tests as directed in 5.4.1 areadvisable.5.4.1 In the case of a dispute arising from dif
22、ferences inreported test results when using the procedure in Test MethodD XXXX for acceptance of commercial shipments, the pur-chaser and the supplier should first confirm that the tests wereconducted using comparable test parameters including speci-men conditioning, grip faces, grip size, etc. Comp
23、arative testsshould then be conducted to determine if there is a statisticalbias between their laboratories. Competent statistical assis-tance is recommended for the investigation of bias. As aminimum, the two parties should take a group of test speci-mens that are as homogeneous as possible and tha
24、t are from alot of the material in question. The test specimens should berandomly assigned to each laboratory for testing. The averageresults from the two laboratories should be compared to theStudents t-test for unpaired data and an acceptable probabilitylevel chosen by the two parties before the t
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