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Informationen zum Autor Dr. John Scheirs is a polymer technologist with ExcelPlas Geomembrane Testing Services. He specializes in geomembrane properties, polymer selection, failure analysis and testing and evaluation of geomembrane materials. He has extensive experience in durability testing of many polymeric geomembranes, in addition to routine mechanical analysis, forensic investigation and weld testing of geomembranes and polymeric liners. He has worked widely with HDPE, fPP and PVC membranes. Previously he worked with Exxon-Mobil on the stabilization and long-term durability of HDPE polymers. Klappentext Geomembranes are flexible polymeric sheets which are used as relatively impermeable liners to contain liquid and vapour. With uses ranging from canal liners to hazard waste landfills, they are used extensively in a range of industries such as water conservation, mining, construction and waste management. A Guide to Polymeric Geomembranes: A Practical Approach offers an informed overview of the developments in this field and includes:* Detailed discussion of the major geomembrane types* Manufacturing methods* Key performance properties* Industrial applications* Testing and chemical resistance of geomembranes* Failure analysis methodologyWritten by a polymer research specialist with more than fifteen years experience in industry, this practical handbook covers the manufacture, use, installation, durability, lifespan and performance of geomembranes. It covers all the information required to enable the reader to select the most suitable geomembrane material for the job.This book is a useful reference for engineers and professionals in industry, environmental consultants, polymer and materials scientists, and government agencies and policy makers. It is of particular interest to those designing, commissioning and operating waste management sites, landfills, mine leachate ponds and water containment facilities. Zusammenfassung Geomembranes are flexible polymeric sheets which are used as relatively impermeable liners to contain liquid and vapour. With uses ranging from canal liners to hazard waste landfills, they are used extensively in a range of industries such as water conservation, mining, construction and waste management. Inhaltsverzeichnis Series Preface xvii Preface xix About the Author xxi Acknowledgments xxiii 1 Introduction to Polymeric Geomembranes 1 1.1 Introduction 1 1.2 Viscoelastic Behaviour 2 1.3 Polymer Structure 4 1.4 Molecular Weight 5 1.5 Molecular Weight Distribution 7 1.6 Crystallinity 8 1.7 Properties of Polyethylenes 14 1.8 Stress-Strain Behaviour of Polymers 16 1.9 Melting Points 20 References 20 2 Geomembrane Manufacturing Methods 21 2.1 Blown Film (Round Die) 22 2.2 Flat Sheet Extrusion (Flat Die) 23 2.3 Coextrusion 25 2.4 Calendering 28 2.5 Spread Coating 29 2.6 Extrusion Coated Geomembranes 30 2.7 Pin-Hole Detection 30 2.8 Texturing 30 2.9 Additives for Geomembranes 40 References 51 3 HDPE Geomembranes 53 3.1 Introduction 53 3.2 Structure-Property Relationships 59 3.3 Comparison of HDPE Geomembranes with Other Geomembranes 60 3.4 Durability and Survivability of HDPE 60 3.5 Selection of Quality HDPE Geomembranes 63 3.6 Common Failure Modes of HDPE Geomembranes 75 3.7 Multilayer HDPE Geomembranes 77 3.8 Fluorinated HDPE (F-HDPE) 82 References 88 4 Linear Low-Density Polyethylene Geomembranes 91 4.1 Introduction 91 4.2 Attributes of LLDPE Geomembranes 92 4.3 Limitations of LLDPE Geomembranes 92 4.4 Mechanical Properties 92 4.5 LLDPE Geomembrane Resins 94 4.6 Speciality Flexible Polyethylene Geomembranes 95 4.7 Very Low-D...
