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New GSI test method for resistance of conductive geosynthetics
| 题名： | New GSI test method for resistance of conductive geosynthetics |
| 正文语种： | eng |
| 作者： | George R. Koerner |
| 作者单位： | Geosynthetic Institute in Folsom Pa. |
| 摘要： | The Geosynthetic Institute (GSI) has a new test method for resistance measured across positions on conductive geosynthetics. Conductive geosynthetics contain an electrically charged backing (usually a thin layer of polyolefin with letdowns containing 20%-30% carbon black) that allows leaks to be detected in lined systems without the need for a conductive subgrade beneath the liner system. This test method presents a technique for determining the resistivity of conductive geosynthetics by way of a digital ohmmeter. It can be used for testing geomembranes or geotextiles that incorporate a conductive layer. The layer is generally an outer skin that is 3-10 mils (0.07-0.25 mm) thick. The test works best on smooth conductive materials. The data obtained in this method is useful for quantifying how conductive the material is from a manufacturing quality control (MQC) perspective. |
| 出版年： | 2022 |
| 期刊名称： | Geosynthetics |
| 卷： | 40 |
| 期： | 3 |
| 页码： | 40-41 |
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