ASTM D4595 PDF

This standard is issued under the fixed designation D ; the number immediately 1 This test method is under the jurisdiction of ASTM Committee D35 on. Designation: D – 09Standard Test Method for TE D Tensile Properties of Geotextiles by the Wide-Width Strip. ASTM D measures the tensile properties of geotextiles using a wide-width strip specimen tensile method. ASTM D is applicable to most geotextiles.

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Determine the number of specimens as follows: Centrally, draw two lines running the full width of the specimen, accurately perpendicular to the length dimension and separated by mm 4 in.

It is used with a constant rate of extension-type tension apparatus.

ASTM D – Wide-Width Geotextiles

This is particularly the case for nonwoven geotextiles. NOTE 5—Some clamping arrangements may lead to slack in the specimen within the gage area. Breaking toughness is calculated from work-to-break, gage length, and width of a specimen.

For secant modulus, state that portion of the force? 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.

Active view current version of standard. Among the options available to the purchaser and the supplier is for the purchaser to accept certi? In this case, the line extends through the d459 force axis at point B9. As a minimum, the two parties should take a group of test specimens which are as homogeneous as possible and which are from a lot of material of the type in question. NOTE 3—It is recognized that in practice, geotextile materials are frequently not weighed to determine when moisture equilibrium has been reached.

The specimen length in the machine direction and cross-machine direction tests, respectively, must be parallel to the direction of application of force.

This width, by contrast, is greater than the length of the specimen. Some fabrics used in geotextile applications have a tendency to contract neck down under a force in the gage length d45595. A superscript epsilon e indicates an editorial change since the last revision or reapproval.

ASTM D Wide Width Tensile_百度文库

At least one clamp should be supported by a free 6 Record and report the test results to three signi? While such a procedure cannot be accepted in cases of dispute, it may be sufficient in routine testing to expose the material to the standard atmosphere for testing for a reasonable period of time before the specimens are tested. On those fabrics, the contraction effect cited in 1. The test specimens should then be randomly assigned in equal numbers to each laboratory for testing. It must be long enough to extend through the full length of both clamps, as qstm for the direction of test.

The point from the zero force axis that the force?

NOTE 4—It is recognized that some tensile tests on geotextiles asstm conducted using a manually applied strain rate. Historical Version s – view previous versions of standard. Some modification of clamping techniques may be necessary for a given geotextile depending upon its structure. Special clamping adaptions may be necessary with strong geotextiles or geotextiles made from glass fibers to prevent them from slipping in the clamps or being damaged as a result of xstm gripped in the clamps.

If, however, it is merely due to randomly distributed weak places, it is a perfectly legitimate result. Specimen clamping may be modified as required at the discretion of the individual laboratory, provided a representative tensile strength is obtained.

If any of the modi?

ASTM D4595 Wide-Width Tensile Test Equipment for Geotextiles

Comparative tests as directed in 5. These measurements can be made using a sealed rule taped on a line on the upper end of the specimen, in the gage area, and recording the change in length as measured from a line spaced 3 in. The test specimens should then be randomly assigned in equal numbers to each laboratory for testing. A number in parentheses indicates the year of last d45995.

The greater width of the specimen specified in this test method minimizes the contraction effect of those fabrics and provides a closer relationship to expected geotextile behavior in the field and a standard comparison. Forces up to 50 kN 11, lbf Thickness of 0 – 30 mm 0 – 1. D Terminology for Geosynthetics3 3.

This test indicated that additional clari? Have a question about conducting the test for this standard?

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In any event, the strain rate described in Likewise, label a second point, P1 at a speci? This is extended to intersect the zero elongation axis at point B8.

It is the intent of the task group to include the above mentioned clari? To obtain thorough wetting, it may be necessary or advisable to add not more than 0. This standard is subject to revision at any time by the responsible technical committee and must be reviewed every? Measure the elongation to three signi? Force sstm of 5 kN to kN 1, lbf tolbf Adjustable test space The most popular choice for static tension astk compression tests These dual column testers are available in both tabletop and floor standing models.

It is used with a constant rate of extension type tension apparatus.