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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By means of our geotextile testing expertise and modular product design, we will help find the testing solution that is right for you. The point from the zero force axis that the force? Competent statistical assistance is recommended for the investigation of bias. Further use of this table is de? 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.
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. Referenced Documents purchase separately The documents listed below are referenced within the subject standard but are not provided as part of the standard.
ASTM D Wide Width Tensile_百度文库
In this case, the line extends through the zero force axis at point B9. The greater width of the specimen speci? Determine the number of specimens as follows: The sample may be taken from the end portion of a roll provided there is qstm evidence it is distorted or different from other portions of the roll.
The following procedural interpretations with respect to this method are suggested: This d4559 does not purport to address all of the safety concerns, if any, associated with its use.
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In any event, the procedure described in Section 10 of this test method for obtaining wide-width strip tensile strength must be maintained. In some cases, it may also be caused by a concentration of stress in the area adjacent to the d495 because they prevent the specimen from contracting in width as the force is applied.
Specimen clamping may be modified as required at the discretion of the individual laboratory, provided a representative tensile strength is obtained.
The wide-width strip technique has been explored by the industry and is recommended in these cases for geotextile applications. D4559 comparing, it can be determined if slippage is occuring in the clamps.
In any event, the strain rate described in This region is considered when determining the initial geotextile modulus.
ASTM D – Wide-Width Geotextiles
When this is known, a preconditioning cycle, as described in Practice Dmay be agreed upon between contractural parties. 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 light of the asym bias. Individual reprints single or multiple copies of this standard may be obtained by astn ASTM at the above address or at phonefaxor service astm.
Do this by having the two lines, which were previously drawn 6 3 mm 4. NOTE 4—It is recognized that some tensile tests on geotextiles are conducted using a manually applied strain rate. At 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. Apparatus and Reagents 6. Describe the material or product sampled and the method of sampling used. Take specimens at random from the laboratory sample, with those for the measurement of the machine direction tensile properties from different positions FIG.
ASTM D measures the tensile properties of geotextiles using a wide-width strip specimen tensile method. Report the method of calculation. If you feel that your comments have not received a fair hearing you should make your views known to the ASTM Committee on Standards, at the address shown below.
Number each asym and then cut it crosswise into two parts, one for determining the conditioned tensile strength and the other for determining the wet tensile strength; each portion shall bear the specimen number. Record and report the test results to three signi? For secant modulus, state that portion of the force?
Test 2 Method D for the determination of the wide-width strip tensile properties of geotextiles may be used for the acceptance testing of commercial shipments of geotextiles but caution is advised since information about between-laboratory precision is incomplete Note 6.
Have a d495 about conducting the test for this standard?
ASTM D4595 Wide-Width Tensile Test Equipment for Geotextiles
Draw a straight line secant through both points P1 and P2 intersecting the zero force axis. Some fabrics used astmm geotextile applications have a tendency to contract neck down under a force in the gage length area. This value for v is somewhat larger than usually found in practice.
The task group is continuing further interlaboratory testing. In astmm cases, mm 4-in. The secant geotextile tensile modulus can be determined by dividing the force at any point along line Q9R9 or its extension by the elongation at the same point measured from point B9, de? Your comments will receive careful consideration at a meeting of the responsible technical committee, which you may attend.
Measure the force and the corresponding elongation with respect to the force axis. This test indicated that additional clari? Other portions of the force?