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| Batten strips — | |||
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Liners may be attached to new and existing concrete structures through the use of stainless steel or aluminum batten strips. These strips are attached to the concrete by inserting stainless steel anchor bolts into the concrete, placing the geomembrane over the anchor bolt, placing a strip of neoprene gasket between the liner and batten strip and securing the batten strip with washers and nuts. |
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| Calandaring — | |||
| The rolling of resin with the rollers in a series, used in the manufacture of certain geomembranes. | |||
| Carbon Black Content Test — | |||
| Geosynthetic products are exposed to UV for extended periods of time. Degradation due to exposure can be minimized by the use of carbon black. By weighing the material before and after burning it, the percentage of carbon black in the sample can be calculated. Well-dispersed carbon black in quantities of 2-3% will provide maximum protection from UV degradation. | |||
| Chemical Stability — | |||
| the stability of a geosynthetic; its ability to resist degradation from chemicals, such as acids, bases, solvents, oils and oxidation agents; and chemical reactions, including those catalyzed by light. | |||
| Creep — | |||
| The slow change in physical dimension of a material under prolonged stress. | |||
| Elongation — | |||
| The increase in length produced in a test specimen by a tensile load | |||
| Extrusion welding — | |||
| The application of a molten polyethylene welding rod to the surface of two geomembrane sheets to be joined. The molten extrudate creates a bond that seals the two pieces of geomembrane together. | |||
| Fusion welding — | |||
| In fusion welding, heat is applied directly to the geo panels by a motorized hot wedge welder. The panels are then routed through a series of rollers that fuse the material together. | |||
| Geocomposites — | |||
| Any geomembranes, geotextiles or geogrids used in laminate or composite form. | |||
| Geogrid — | |||
| An open grid structure of polymeric material used mainly for tensile reinforcement and used with soil, earth, rock and/or foundation as a requisite part of an engineered project. | |||
| Geomembrane — | |||
| An essentially impermeable membrane used with soil, earch, rock and foundation as a requisite part of an engineered project | |||
| Geosynthetic — | |||
| The general classification of all synthetic materials used in geotechnical engineering applications (it includes geotextiles, geocells, geogrids, geomembranes and geocomposites). | |||
| Geotextile — | |||
| Any permeable textile used with soil, earch, rock and foundation as a requisite part of an engineered project. | |||
| Modulus — | |||
| The slope of stress or strain curve (the stress on stretching a material to different elongations and the ratio of change in force to the change in elongation. | |||
| Mullen Burst — | |||
| The measured hydraulic bursting strength of textiles. | |||
| Needle punched — | |||
| The mechanically binding of staple or filament fibers with barbed needles to form a compact geotextile fabric. | |||
| Non-woven — | |||
| A textile produced by interlocking and/or the bonding of fibers by various means. | |||
| Permeability — | |||
| The generic term for the property that reflects the ability of a material to conduct a fluid. | |||
| Polypropylenes — | |||
| Polypropylene is a thermoplastic polyolefin. Introduced in the '70s, it is one of the fastest growing geomembranes in use today for exposed applications. | |||
| Puncture Resistance Testing — | |||
| The test that measures the material's resistance to puncture. A probe with a standard tip geometry is forced through the geomembrane at a fixed rate. The result of the test is the force required to puncture the material. | |||
| Secondary Containment — | |||
| A special application of geomembranes — this is where a geomembrane provides spill containment to a tank or other containment system. | |||
| Shearing strength — | |||
| The force required to either start or continue to propagate a tear in a fabric under specific conditions. | |||
| Specific Gravity — | |||
| The ratio of the density of a fabric to the density of water obtained by weighing both items in air. (A specific gravity less than one implies that the fabric will float.) | |||
| Stress Cracking Testing — | |||
| These tests determine the geomembrane's resistance to environmental stress cracking. A stress crack is a brittle fracture in the plastic caused by tensile stresses, which are less than the typical yield tensile strength of the mateiral applied over long periods of time. | |||
| Tear Resistance Testing — | |||
| Tear resistance tests measures the force required to initiate tearing. | |||
| Tensile Testing — | |||
| A material's tensile strength is an indication of the amount of stress, in tension, that the material can withstand before failing. | |||
| Textured geomembranes — | |||
| The use of induced textured surfaces to increases the interface friction between containment membranes and adjoining materials. | |||
| UV Stability — | |||
| The ability of a material to resist deterioration from exposure to sunlight or ultraviolet (UV) radiation. | |||
| Wicking — | |||
| Fluid conduction into the geomembrane or liner that could de-laminate plies. | |||
| Woven — | |||
| A textile produced by interlacing two or more sets of fibers, filaments or yarns at right angles. | |||
| Disclaimer: This information is provided as general information only and is not intended as a guarantee or warranty. Colorado Lining International assumes no responsibilities in connection with the use of this information. | |||