原文传递
Testing for tensile properties of geosynthetic straps
| 题名： | Testing for tensile properties of geosynthetic straps |
| 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) now has a revised test method for determining the tensile properties of geosynthetic straps. They are an extremely strong reinforcement element for mechanically stabilized structures. These soil reinforcing elements consist of high-strength extensible geosynthetic reinforcing straps that are connected through a sleeve or embedded connector to precast concrete facing panels. Such structures are ideal for construction in or near water and other aggressive environments. Geosynthetic strap reinforcements are suitable for mechanically stabilized structures such as walls, steep slopes and reinforced embankments. A typical retaining wall installation using geosynthetic straps is shown in Figure 1. These reinforcement geosynthetics are typically 2 to 4 inch (51 to 102 mm) wide straps that consist of high-tenacity polyester fibers encased in a polyethylene jacket. A photograph of a typical geosynthetic strap is shown in Figure 2. The high-tenacity polyester is the load-bearing element, while the jacket protects the yarns from installation damage and degradation. They exhibit the following properties compared to geogrid or geotextile reinforcement: 1. High-strength geosynthetic strap reinforcement exhibits less extensibility (strain at failure ＜ 11%) than typical geogrid or geotextile reinforcement. 2. Geosynthetic straps are suitable for highly aggressive and corrosive environmental conditions. The polyester yarns within the geosynthetic straps are comprised of high-tenacity polyester filament yarns with high tensile strength and modulus, low creep and high molecular weight (＞25,000 g/mol) and carboxyl end groups (＞30 mmol/kg) to ensure excellent performance and durability. 3. Geosynthetic strap connections to precast facing panels are secure, simple, quick and easy. 4.• The composition and geometry of geosynthetic straps are dimensionally stable, weather resistant and resistant to installation damage. |
| 出版年： | 2023 |
| 期刊名称： | Geosynthetics |
| 卷： | 41 |
| 期： | 2 |
| 页码： | 40-42 |
检索历史
应用推荐
