ASTM D6566-2017 red 7221 Standard Test Method for Measuring Mass per Unit Area of Turf Reinforcement Mats《测量泥碳钢筋网单位面积质量的标准试验方法》.pdf
《ASTM D6566-2017 red 7221 Standard Test Method for Measuring Mass per Unit Area of Turf Reinforcement Mats《测量泥碳钢筋网单位面积质量的标准试验方法》.pdf》由会员分享,可在线阅读,更多相关《ASTM D6566-2017 red 7221 Standard Test Method for Measuring Mass per Unit Area of Turf Reinforcement Mats《测量泥碳钢筋网单位面积质量的标准试验方法》.pdf(4页珍藏版)》请在麦多课文档分享上搜索。
1、Designation: D6566 14D6566 17Standard Test Method forMeasuring Mass per Unit Area of Turf Reinforcement Mats1This standard is issued under the fixed designation D6566; the number immediately following the designation indicates the year oforiginal adoption or, in the case of revision, the year of las
2、t 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 an index to the determination of mass per unit area of all turf reinforcement mats.1.2 The values
3、 stated in SI units are to be regarded as standard. The values given in parentheses are for information only.1.3 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibilityof the user of this standard to establish appropriate safety
4、 and health practices and determine the applicability of regulatorylimitations prior to use.2. Referenced Documents2.1 ASTM Standards:2D123 Terminology Relating to TextilesD1776 Practice for Conditioning and Testing TextilesD4354 Practice for Sampling of Geosynthetics and Rolled Erosion Control Prod
5、ucts(RECPs) for TestingD4439 Terminology for GeosyntheticsE177 Practice for Use of the Terms Precision and Bias in ASTM Test MethodsE691 Practice for Conducting an Interlaboratory Study to Determine the Precision of a Test Method2.2 ISO/DIS Document:9864-1990 Mass per Unit Area of Geotextiles33. Ter
6、minology3.1 For definitions of textile terms used in this test method, refer to Terminology D123.3.2 For definitions of terms relating to geotextiles used in this test method, refer to Terminology D4439.4. Summary of Test Method4.1 The mass per unit area of a turf reinforcement mat is determined by
7、weighing test specimens of known dimensions, cut fromequally spaced distances over the full width of the laboratory sample. The calculated values are then averaged to obtain the meanmass per unit area of the laboratory sample.5. Significance and Use5.1 This test method is used to determine if the tu
8、rf reinforcement mat meets specifications for mass per unit area. This testmethod can be used for quality control to determine specimen conformance. This measurement allows for a simple control of thedelivered material by a comparison of the mass per unit area of the delivered material and the speci
9、fied mass per unit area.5.2 The procedure in this test method may be used for acceptance testing of commercial shipments, but caution is advised sinceinformation about between-laboratory precision is incomplete. Comparative tests in accordance with 5.2.1 are advisable.5.2.1 In case of a dispute aris
10、ing from differences in reported test results when using the procedures in this test method foracceptance testing of commercial shipments, the purchaser and the manufacturer should conduct comparative tests to determineif there is a statistical bias between their laboratories. Competent statistical
11、assistance is recommended for the investigation of bias.1 This test method is under the jurisdiction of ASTM Committee D35 on Geosynthetics and is the direct responsibility of Subcommittee D35.05 on Geosynthetic ErosionControl.Current edition approved May 1, 2014Jan. 1, 2017. Published June 2014Janu
12、ary 2017. Originally approved in 2000. Last previous edition approved in 20122014 asD6566 12.D6566 14. DOI: 10.1520/D6566-14.10.1520/D6566-17.2 For referencedASTM standards, visit theASTM website, www.astm.org, or contactASTM Customer Service at serviceastm.org. For Annual Book of ASTM Standardsvolu
13、me information, refer to the standards Document Summary page on the ASTM website.3 Available from American National Standards Institute (ANSI), 25 W. 43rd St., 4th Floor, New York, NY 10036, http:/www.ansi.org.This document is not an ASTM standard and is intended only to provide the user of an ASTM
14、standard an indication of what changes have been made to the previous version. Becauseit may not be technically possible to adequately depict all changes accurately, ASTM recommends that users consult prior editions as appropriate. In all cases only the current versionof the standard as published by
15、 ASTM is to be considered the official document.Copyright ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States1As a minimum, the two parties should take a group of test specimens that are as homogeneous as possible and which are from alot of materia
16、l of the type in question. The test specimen should then be randomly assigned in equal numbers to each laboratoryfor testing. The average results from the two laboratories should be compared using the appropriate studentsStudents t-testt-testand an acceptable probability level chosen by the two part
17、ies before testing is begun. If a bias is found, either its cause must befound and corrected or the purchaser and the manufacturer must agree to interpret future test results in light of the known bias.6. Apparatus6.1 Balance, calibrated, with an accuracy of 0.01 g.7. Sampling7.1 Lot SampleDivide th
18、e test specimens into lots, and for the lot to be tested, take the lot sampleIn the absence of otherguidelines, divide the product into lots and take lot samples in accordance with Practice D4354.7.2 Laboratory SampleConsider the units in the lot sample as the units in the laboratory sample. For the
19、 laboratory sample,take a full width swatch full-width sample of sufficient length alongin the selvage machine direction so that the requirementsrequired size and number of 7.3 can be met.specimens can be obtained. Exclude the inner and outer layers or wraps of the roll orany material containing fol
20、ds, crushed areas, or other distortions not representative of the sampled lot.7.2.1 The laboratory sample should be free from imperfections or other areas not representative of the material sampled.7.3 Remove test specimens from the laboratory sample so that each specimen will contain different mach
21、ine and cross-machineelements with no specimen taken nearer than 100 mm 4 in. from the roll sides or ends, unless otherwise specified.7.4 The number of test specimens shall be a minimum of five, cut Cut specimens such that they are representative of the entireroll width and with a combined total min
22、imum area of 230 000 mm2 (356 356 in.2). Each test specimen shall be equal in area(not less than 23 000 mm2 (35.635.6 in.2).). Cut each test specimen with an accuracy of 60.5 % of its area.NOTE 1For test specimens prepared in the field, larger than minimum-sized test specimens will be required to st
23、ay within the cutting accuracy (0.5 %).Field experience has shown that a test specimen with an area not less than 207 000 mm2 (320.4 in.2) will be necessary to achieve the required accuracy.7.4.1 Cut the test specimens at least one tenth the width of the turf reinforcement mat from any selvage, unle
24、ss otherwisespecified.7.4.2 If the structure of the turf reinforcement mat is such that the specified test specimen size is not representative of thelaboratory sample, a larger size shall be agreed upon between the purchaser and the supplier.7.5 Number of SpecimensUnless otherwise agreed upon, as wh
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