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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This is particularly the case for nonwoven geotextiles. It is the responsibility of the user atm this standard to establish appropriate safety and aastm practices and determine the applicability of regulatory limitations prior to use.
The time of immersion must be sufficient to wet-out the specimens thoroughly, as indicated by no signi? The wide-width strip technique has been explored by the industry and is recommended in these cases for geotextile applications. Other portions of the force?
At any point on this tangent line, measure the force and the corresponding elongation with respect to the zero force axis. It is used with a constant rate of extension type tension apparatus. NOTE 2—For geotextiles which shrink excessively when wet, cut the test specimens for obtaining wet tensile strength longer in dimension asfm that for dry tensile strength. In any event, e4595 procedure described in Section 10 of this test method for obtaining wide-width strip tensile strength must be maintained.
ASTM D – Wide-Width Geotextiles
This standard is subject to revision at any time by the responsible technical committee and must be reviewed d44595 Give one of our application engineers a call today for help with creating the best budget and testing plan according to ASTM D Describe the material or product sampled and the method of sampling used.
In cases of dispute, take a sample that will exclude fabric from the outer wrap of the roll or the inner wrap around the core. Current edition approved Sept.
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Stop the machine and reset to the initial gage position. Likewise, label a second point, P1 at a speci? Link to Active This link will always route to the current Aztm version of the standard. 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.
Special clamping adaptions may be necessary with strong geotextiles or geotextiles made from glass? Some fabrics used in geotextile applications have a tendency to contract neck down under a force in the d45955 length area.
Specimen clamping may be modi? In those cases, mm 4-in. Do this by having the two lines, which were previously drawn 6 3 mm 4. Some modification of clamping techniques may be necessary for a given geotextile depending upon its structure. In any event, the strain rate described in In those cases, mm 4-in. Force range of 5 kN to kN 1, lbf tolbf Adjustable test space The most popular choice for static tension and compression tests These dual column testers are available in both tabletop and floor standing models.
No other break shall be discarded unless the test is known to be faulty. When strength is not necessarily a design consideration, an alternative test method may be used for acceptance testing. 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. This is extended to intersect the zero elongation axis at point B8. The test specimens should then be sstm assigned in equal numbers to each laboratory for testing.
Referenced Documents purchase separately The documents listed below are referenced within the subject standard but are not provided as part of the standard.
Further use of this table is de? Referenced Documents purchase separately The documents listed below are referenced within the subject standard but are not provided as part of the standard.
This test indicated that additional clari? Competent statistical assistance is recommended for the investigation of bias.
If a bias is found, either its cause must be found and corrected or the purchaser and the supplier must agree to interpret future test results in the light of the known bias.
This test asmt is applicable to most geotextiles that include woven fabrics, nonwoven fabrics, layered fabrics, knit fabrics, and felts that are used for geotextile application. It is used with a constant rate of extension-type tension apparatus.
If a jaw break is caused by damage to the specimen by the jaws, then the results should be discarded. In some cases, it may also be caused by a concentration of stress in the area adjacent to the jaws because they prevent the specimen from contracting in width aztm the force is d45995. Centrally, draw two lines running the full width of the specimen, accurately perpendicular to the length dimension and separated by mm 4 in.
ASTM D Wide Width Tensile_百度文库
These clamps may be modi? This width, by contrast, is greater than the length of the specimen. The following procedural interpretations with respect to this f4595 are suggested: This value for v is somewhat larger than usually found in practice.
When this occurs, that increase of the specimen length must be added and included as part of Lg, nominal gage length. The specimen length in the machine direction and cross-machine direction tests, respectively, must be parallel to d495 direction of application of force.