It is common to design slopes as steep as possible to optimise land use. This can lead to a larger crest area or a reduction of the embankment area. If the frictional and strength characteristics of the soil cannot provide a stable structure, special reinforcing measures are required. Secugrid® geogrids are an economical alternative to modifying the slope geometry. Made from extruded high strength monolithic flat polyester PET or polypropylene PP bars, Secugrid® reinforces the soil structure by carrying excess slope forces.
With the optimised Secugrid® product design, the flat Secugrid® bars have maximum interlocking with the surrounding soil. The junction stiffness and negligible product construction elongation of Secugrid® allows immediate force absorption when confining stress is applied. Compared to other geosynthetic reinforcement products, Secugrid® geogrids show a steeper increase in the force-elongation diagram. Higher stress absorption and lower product elongation result in more economical construction methods.
Different national guidelines for slope stability calculations can be used. The NAUE Secugrid® Design Manual also contains design and product selection guidelines for proper use of the Secugrid® geogrid products. These include guidelines for the application of geotextiles and geogrids in the construction of roads, and recommendations for geosynthetic reinforcement.
The PET and PP resin used in Secugrid® provides excellent physical characteristics and helps to allow more economical product selections. Secugrid® can withstand higher long-term creep stresses than other polyolefin products due to the unique manufacturing process.