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ASTM D7179-07(2013)

(Test Method)

Standard Test Method for Determining Geonet Breaking Force

Standard Test Method for Determining Geonet Breaking Force

SIGNIFICANCE AND USE
5.1 This method evaluates tensile breaking force of geonets for the purposes of quality control and quality assurance. Testing is performed parallel to the machine direction only for that is the primary direction that geonets witnesses tensile loading. This method is an index test and is not intended for design purposes.
SCOPE
1.1 This test method is used to measure the breaking force of a Geonet.  
1.2 This test is applicable for manufacturing quality control (MQC) and construction quality assurance (CQA) testing and is not recommended as a performance test.  
1.3 The values stated in SI units are to be regarded as standard. The values given in parentheses are 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.

General Information

Status
Historical
Publication Date
31-Dec-2012
ICS
59.080.70 - Geotextiles
Technical Committee
D35 - Geosynthetics
Drafting Committee
D35.01 - Mechanical Properties
Current Stage
Ref Project

Relations

Replaces
ASTM D7179-07e1 - Standard Test Method for Determining Geonet Breaking Force
Effective Date
01-Jan-2013
Replaced By
ASTM D7179-18 - Standard Test Method for Determining Geonet Breaking Force
Effective Date
01-Jul-2018
Referred By
ASTM D7273/D7273M-08(2020) - Standard Guide for Acceptance Testing Requirements for Geonets and Geonet Drainage Geocomposites
Effective Date
01-Jan-2013

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ASTM D7179-07(2013) - Standard Test Method for Determining Geonet Breaking Force
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NOTICE: This standard has either been superseded and replaced by a new version or withdrawn.
Contact ASTM International (www.astm.org) for the latest information
Designation: D7179 − 07 (Reapproved 2013)
Standard Test Method for
Determining Geonet Breaking Force
This standard is issued under the fixed designation D7179; the number immediately following the designation indicates the year of
original adoption or, in the case of revision, the year of last revision. A number in parentheses indicates the year of last reapproval. A
superscript epsilon (´) indicates an editorial change since the last revision or reapproval.
1. Scope 3.1.4 index test, n—a test procedure which may contain a
known bias but which may be used to establish an order for a
1.1 This test method is used to measure the breaking force
set of specimens with respect to the property of interest.
of a Geonet.
3.1.5 peak load, n—maximum force recorded during a
1.2 This test is applicable for manufacturing quality control
tensile test.
(MQC) and construction quality assurance (CQA) testing and
4. Summary of Test Method
is not recommended as a performance test.
4.1 Geonet specimens are mounted between full width grips
1.3 The values stated in SI units are to be regarded as
in a load frame. Tensile load is applied longitudinally to the
standard. The values given in parentheses are for information
specimen at a constant rate of crosshead movement. The test is
only.
carried to rupture and a maximum breaking force of each
1.4 This standard does not purport to address all of the
specimen is recorded.
safety concerns, if any, associated with its use. It is the
responsibility of the user of this standard to establish appro-
5. Significance and Use
priate safety and health practices and determine the applica-
5.1 This method evaluates tensile breaking force of geonets
bility of regulatory limitations prior to use.
for the purposes of quality control and quality assurance.
Testing is performed parallel to the machine direction only for
2. Referenced Documents
that is the primary direction that geonets witnesses tensile
loading. This method is an index test and is not intended for
2.1 ASTM Standards:
design purposes.
D4354 Practice for Sampling of Geosynthetics and Rolled
Erosion Control Products (RECPs) for Testing
6. Apparatus
D4439 Terminology for Geosynthetics
6.1 Tensile Testing Machine—Constant Rate of Extension
(CRE) equipment meeting the requirements of Specification
3. Terminology
D76. The load cell shall be accurate to within 61 % of the
3.1 Definitions:
applied force.The drive mechanism shall be able to control the
3.1.1 Definitions of terms applying to this test method
rate of extension to within 61 % of the targeted rate.
appear in Terminology D4439.
6.2 Grips—One of the grips must be self aligning to
3.1.2 atmosphere for testing geosynthetics, n—air main-
compensate for uneven distribution of force across the speci-
tained at a relative humidity between 50 to 70 % and a
men. The clamping force and the clamp surfaces shall hold the
temperature of 21 6 2°C (70 6 4°F).
specimen firmly without causing damage. The clamps shall be
3.1.3 geonet, n—a geosynthetic consisting of integrally
capable of gripping a 100 mm (4 in.) by 25 mm (1 in.) area at
connected parallel sets of ribs overlying similar sets at various
a minimum.
angles for planar drainage of liquids or gases.
6.3 Recording Mechanism—The testing machine shall be
equipped with equipment capable of producing a hard copy of
the force versus displacement curve. Electronic data acquisi-
This test method is under the jurisdiction of ASTM Committee D35 on
tion with printer capabilities or direct recording devices is
Geosynthetics and is the direct responsibility of Subcommittee D35.01 on Mechani-
acceptable.
cal Properties.
Current edition approved Jan. 1, 2013. Published January 2013. Originally
7. Sampling, Test Specimens, and Test Units
approved in 2005. Last previous edition approved in 2007 as D7179–07. DOI:
10.1520/D7179-07R13.
7.1 Lot Sample—For the lot sample, take rolls of geonet per
For referenced ASTM standards, visit the ASTM website, www.astm.org, or
the applicable project specification, or as agreed upon between
contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM
purchaser and supplier. Unless otherwise specified, refer to
Standards volume information, refer to the standard’s Document Summary page on
the ASTM website. Practice D4354.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
D7179 − 07 (2013)
TABLE 1 Tensile Strength (in pounds)
7.2 Laboratory Sample—For laboratory sample, take a full-
width swatch approximately1m(3ft) long by roll width for Material Average Repeatability Reproducibility Repeatability Reproducibility
Standard Standard Limit Limit
each roll in the lot sample. Take a sample that will exclude
Deviation Deviation
material from the outer wrap of the roll or the inner wrap
xSr sR r R
around the core. In the case where the sample is taken at the Geonet 291.9 8.8 23.2 24.6 64.8
“A”
production site, material from the outer wrap may be used if it
is undamaged.
7.3 Test Specimens—Preparefivespecimenswiththelength
11. Report
ofthespecimenparalleltothemachinedirection(MD).Cutthe
specimens such that none are obtained within 150 mm (6 in.)
11.1 Report the following information:
of the roll edges.
11.1.1 Complete identification of the material tested,
11.1.2 The direction of testing (that is, MD),
7.4 Specimen Size and Shape—The specimens shall be 102
11.1.3 The breaking force of each specimen tested in units
62mm(4 6 0.08 in.) wide by 203 64mm(8 6 0.16 in.)
of k
...

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SCOPE
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4.2 This standard arose from the need for a destructive test method for evaluating seams of reinforced geomembranes. Standards written for destructive testing of nonreinforced geomembranes do not include all break codes (Fig. 1) applicable to reinforced geomembranes.
FIG. 1 Break Codes for Dual Hot Wedge and Hot Air Seams of Reinforced Geomembranes Tested for Seam Strength in Shear and Peel Modes  
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SCOPE
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1.2.5 Impulse—Clamping bars heated by wires or a ribbon melt the sheets clamped between them. A cooling period while still clamped allows the polymer to solidify before being released.  
1.3 The types of materials covered by this test method include, but are not limited to, reinforced geomembranes made from the following polymers:  
1.3.1 Very low-density polyethylene (VLDPE).  
1.3.2 Linear low-density polyethylene (LLDPE).  
1.3.3 Flexible polypropylene (fPP).  
1.3.4 Polyvinyl chloride (PVC).  
1.3.5 Chlorosulfonated polyethylene (CSPE).  
1.3.6 Ethylene interpolymer alloy (EIA).  
1.4 Units—The values stated in either SI units or inch-pound units are to be regarded separately as standard. The values stated in each system may not be exact equivalents; therefore, each system shall be used independently of the other. Combining values from the two systems may result in nonconformance with the standard.  
1.5 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 ap...

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ASTM
ASTM D5101-23(Test Method)
Standard Test Method for Measuring the Filtration Compatibility of Soil-Geotextile Systems

SIGNIFICANCE AND USE
5.1 This test method is recommended for the evaluation of the performance of water-saturated soil-geotextile systems under unidirectional flow conditions. The results obtained may be used as an indication of the compatibility of the soil-geotextile system with respect to both particle retention and flow capacity.  
5.2 This test method is intended to evaluate the performance of specific on-site soils and geotextiles at the design stage of a project, or to provide qualitative data that may help identify causes of failure (for example, clogging, particle loss). It is not appropriate for acceptance testing of geotextiles. It is also improper to utilize the results from this test for job specifications or manufacturers' certifications.  
5.3 This test method is intended for site-specific investigation therefore is not an index property of the geotextile, and thus is not intended to be requested of the manufacturer or supplier of the geotextile.
SCOPE
1.1 This test method covers performance tests applicable for determining the compatibility of geotextiles with various types of water-saturated soils under unidirectional flow conditions.  
1.2 Two evaluation methods may be used to investigate soil-geotextile filtration behavior, depending on the soil type:  
1.2.1 For soils with a plasticity index lower than 5, the systems compatibility shall be evaluated per this standard.  
1.2.2 For soils with a plasticity index of 5 or more, it is recommended to use Test Method D5567 (‘HCR,’ Hydraulic Conductivity Ratio) instead of this test method.  
1.2.3 If the plasticity index of the soil is close to 5, the involved parties shall agree on the selection of the appropriate method prior to conducting the test. This task may require comparison of the permeability of the soil-geotextile system to the detection limits of the HCR and Gradient Ratio Test (GRT) test apparatus being used.  
1.3 The values stated in SI units are to be regarded as standard. The values in parentheses are 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, health, and environmental practices and determine the applicability of regulatory limitations prior to use.  
1.5 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.

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