Chapter
May 7, 2012
Assessment of Maximum Allowable Strains in Polyethylene and Polypropylene Geomembranes
Authors: Ian D. Peggs, Bruce Schmucker, and Peter CareyAuthor Affiliations
Publication: Waste Containment and Remediation
Abstract
Geomembranes used in separation liners between old and new waste in vertical expansions of landfills may be subject to strain caused by differential settlement. 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 proposed; as low as 0.25% to 1.0% for high density polyethylene (HDPE). Such low numbers are likely 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 1980s and do not reflect current conditions, nor do they address geomembranes other than HDPE. This paper presents the background and reasoning for updating the MAS values for geomembranes.
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© 2005 American Society of Civil Engineers.
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Published online: May 7, 2012
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ASCE Technical Topics:
- Construction engineering
- Construction methods
- Engineering materials (by type)
- Environmental engineering
- Geomaterials
- Geomembranes
- Geosynthetics
- Geotechnical engineering
- Landfills
- Linings
- Material mechanics
- Materials engineering
- Plastics
- Polyethylene
- Polymer
- Recycling
- Strain
- Synthetic materials
- Waste management
- Waste sites
Authors
Affiliations
Ian D. Peggs
I-CORP INTERNATIONAL, Inc., 6072 N. Ocean Blvd., Ocean Ridge, FL 33435
Bruce Schmucker
EMCON/OWT, Inc., 5050 Section Ave., Cincinnati, OH 45212
Peter Carey
P. J. Carey & Associates, 5878 Valine Way, Sugar Hill, CA 30518
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