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  • ASTM
    D4884-13 Standard Test Method for Strength of Sewn or Bonded Seams of Geotextiles (Redline)
    Edition: 2013
    $62.90
    Unlimited Users per year

Description of ASTM-D4884 2013

ASTM D4884 - 13

Standard Test Method for Strength of Sewn or Bonded Seams of Geotextiles

Active Standard ASTM D4884 | Developed by Subcommittee: D35.01

Book of Standards Volume: 04.13




ASTM D4884

Significance and Use

5.1 As explained in Test Method D4595 , narrow geotextile specimens demonstrate the tendency to contract (neck down) in the gage area when under stress. The wider width specimen will minimize this phenomenon in seams during strength testing. The results achieved in this test method can more accurately correlate to the seam strength values anticipated in the field.

5.2 This test method can be used to measure the seam strength of geotextiles, and may also be used for acceptance testing of commercial shipments of geotextiles. When strength is not necessarily a design consideration of seam interaction, an alternate method for determining the seam strength, such as Test Method D1683 , may be used depending on the specification requirements. Because current information about laboratory precision is incomplete, comparative tests, as described in 5.2.1 , may be advisable.

5.2.1 In case of a dispute arising from differences in reported test results when using this test method for acceptance testing of commercial shipments, the purchaser and the supplier should perform comparative tests to determine if there is a statistical bias between their laboratories. Competent statistical assistance is recommended for the investigation of bias. As a minimum, the two parties should take a group of test specimens from the same lot of geotextile, that utilize a like method of seam assembly to achieve seam interaction. The specimens should then be randomly assigned in equal number to each laboratory for testing. If a bias is found, either its cause must be determined and corrected, or the purchaser and the supplier must agree to interpret future test results in light of the known bias.

5.3 Although other methods of determining seam strength are available, this test method, that measures wide specimens, will more accurately correlate to the anticipated performance in the field.

5.4 This test method can be used to help determine seam design engineering for the geotextiles being evaluated.

1. Scope

1.1 This test method covers the seam strength of geotextiles. The primary distinction of this test method for evaluating seam strength is the width of the specimen. This is in contrast to the more narrow specimen width used in the tensile grab strength test discussed in Test Method D1683 .

1.2 This test method will provide data to indicate the seam strength that can be achieved for each particular geotextile and seam assembly construction.

1.3 The values stated in SI units are to be regarded as standard. The inch-pound units given in parentheses are provided for information only.

1.4 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use.


2. Referenced Documents (purchase separately) The documents listed below are referenced within the subject standard but are not provided as part of the standard.

Federal Standard

Fed.Std.No.751a Stitches, Seams, and Stitchings Available from Standardization Documents Order Desk, Bldg. 4 Section D, 700 Robbins Ave., Philadelphia, PA 19111-5094, Attn: NPODS.

ASTM Standards

D76 Specification for Tensile Testing Machines for Textiles

D123 Terminology Relating to Textiles

D1683 Test Method for Failure in Sewn Seams of Woven Apparel Fabrics

D1776 Practice for Conditioning and Testing Textiles

D1777 Test Method for Thickness of Textile Materials

D4439 Terminology for Geosynthetics

D4595 Test Method for Tensile Properties of Geotextiles by the Wide-Width Strip Method

E178 Practice for Dealing With Outlying Observations

E691 Practice for Conducting an Interlaboratory Study to Determine the Precision of a Test Method


Keywords

geotextile; seam weld; sewn seam; thermally bonded seam; adhesive bonded seam;


ICS Code

ICS Number Code 59.080.70 (Geotextiles)


DOI: 10.1520/D4884-13

ASTM International is a member of CrossRef.

ASTM D4884

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