Long-term allowable tensile stresses for polyethylene geomembranes

Berg, Ryan R.; Bonaparte, Rudolph

doi:10.1016/0266-1144(93)90006-a

Cited by 12 publications

(5 citation statements)

References 3 publications

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“…This is a realistic behaviour present in real geomembranes as well and is attributed to creep (stress relaxation) in the geomembrane and also to creep at the interfaces. The geomembranes creep at constant stress (Berg and Bonaparte, 1993;Merry and Bray, 1997). In other words, the stress in a geomembrane deceases with time if strain is fixed.…”

Section: Results From Test It04-a Completed Landfillmentioning

confidence: 99%

Tension in geomembranes on landfill slopes under static and earthquake loading—Centrifuge study

Thusyanthan

Madabhushi

Singh

2007

Geotextiles and Geomembranes

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Section: Results From Test It04-a Completed Landfillmentioning

confidence: 99%

Tension in geomembranes on landfill slopes under static and earthquake loading—Centrifuge study

Thusyanthan

Madabhushi

Singh

2007

Geotextiles and Geomembranes

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“…Also recollect that Duvall specifically mentions that his test results may not be applicable to geomembranes made with other HDPE resins. And in their paper Berg and Bonaparte (1993) also specifically state:…”

Section: Discussionmentioning

confidence: 96%

“…After 1000 hr they projected that maximum arch strains would be about 2% and 1 to 2% respectively. They then calculated an allowable long term stress that would "prevent rupture" using the approach of Berg and Bonaparte (1993):…”

Section: Discussionmentioning

confidence: 99%

“…Clearly, the most appropriate experimental data for multiaxial creep testing of HDPE geomembranes has been generated by Duvall (1993). Both Smolkin and Chevrier (1997) and Berg and Bonaparte (1993) used Duvall's data to generate a maximum allowable long term stress at 23 o C for design lives of 50 and 100 years, respectively. Both identified a rupture stress of about 7 MPa.…”

Section: Discussionmentioning

confidence: 99%

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Assessment of Maximum Allowable Strains in Polyethylene and Polypropylene Geomembranes

Peggs¹,

Schmucker²,

Carey³

2005

Waste Containment and Remediation

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Geomembranes used in separation liners between old and new waste in vertical expansions of landfills may be subject to differential settlement strains. Therefore, it is important to define a maximum allowable strain (MAS) that any given geomembrane can tolerate without compromising its required service life. In a number of instances some very low values have been proposedas low as 0.25% and 1.0%for high density polyethylene (HDPE). Such low numbers are probably based on German regulations for HDPE landfill liners that require a maximum allowable global strain of 3% and a limiting local strain due, for example, to protruding drainage stones, of 0.25%. The low allowable strain values adopted by the German regulators have been based on products and practices utilized in the 1980's and do not reflect current conditions, nor do they address membranes other than HDPE. In this paper we present the background and reasoning for updating MAS values.

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“…The geogrid junctions are typically thicker than the ribs. The physical characteristics of the geogrid, such as creep, tensile modulus, junction strength, and flexural rigidity (ASTM D7748) are also of interest to meet the design and serviceability requirements [ 12 , 13 ]. Higher geogrid tensile modulus becomes more critical when loading conditions are more instantaneous [ 14 ].…”

Section: Physical and Geometric Characteristicsmentioning

confidence: 99%

Polymer Geogrids: A Review of Material, Design and Structure Relationships

Al-Barqawi

Aqel

Wayne³

et al. 2021

Materials

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Geogrids are a class of geosynthetic materials made of polymer materials with widespread transportation, infrastructure, and structural applications. Geogrids are now routinely used in soil stabilization applications ranging from reinforcing walls to soil reinforcement below grade or embankments with increased potential for remote-sensing applications. Developments in manufacturing procedures have allowed new geogrid designs to be fabricated in various forms of uniaxial, biaxial, and triaxial configurations. The design flexibility allows deployments based on the load-carrying capacity desired, where biaxial geogrids may be incorporated when loads are applied in both the principal directions. On the other hand, uniaxial geogrids provide higher strength in one direction and are used for mechanically stabilized earth walls. More recently, triaxial geogrids that offer a more quasi-isotropic load capacity in multiple directions have been proposed for base course reinforcement. The variety of structures, polymers, and the geometry of the geogrid materials provide engineers and designers many options for new applications. Still, they also create complexity in terms of selection, characterization, and long-term durability. In this review, advances and current understanding of geogrid materials and their applications to date are presented. A critical analysis of the various geogrid systems, their physical and chemical characteristics are presented with an eye on how these properties impact the short- and long-term properties. The review investigates the approaches to mechanical behavior characterization and how computational methods have been more recently applied to advance our understanding of how these materials perform in the field. Finally, recent applications are presented for remote sensing sub-grade conditions and incorporation of geogrids in composite materials.

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Long-term allowable tensile stresses for polyethylene geomembranes

Cited by 12 publications

References 3 publications

Tension in geomembranes on landfill slopes under static and earthquake loading—Centrifuge study

Tension in geomembranes on landfill slopes under static and earthquake loading—Centrifuge study

Assessment of Maximum Allowable Strains in Polyethylene and Polypropylene Geomembranes

Polymer Geogrids: A Review of Material, Design and Structure Relationships

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