In the land use plan of the Nieder-Olm district, with the local municipality of Stadecken-Elsheim, a residential development area is designated there at the northwestern edge of the village. The area covers a surface of approx. 3.1 ha. The accruing surface water is to be collected or temporarily stored via drainage ditches in a rainwater retention basin to delay runoff. In this case, the stormwater retention basin was constructed using earthworks. The advantages are the low construction costs compared to other construction methods and the possibility of a near-natural, landscape-oriented design. The earth basin was first modeled. EUROBENT 3700 was used to seal the bottom and slope of the basin. This was followed by a layer of sand approx. 30 cm thick and topsoil. Extensive grass is planned for planting.
The design of EUROBENT clay liners - full-surface needling of the geosynthetics, fiber anchoring by fusing the threads into knots on the underside, secure encapsulation of the bentonite - results in uniform, full-surface shear force transmission and a high sealing effect.
The high swelling capacity of the bentonite and the pasty consistency in the wet state also mean that, in the event of mechanical damage and/or rewetting after drying out, the sealing effect is maintained or restored by a self-healing process. EUROBENT clay liners are therefore ideally suited for the high safety requirements in groundwater and flood protection.
GCL used in dyke construction and hydraulic engineering have to meet special safety requirements, as their functionality is crucial for e.g. flood protection e.g. the flood protection of entire regions can depend on their functionality. In dyke construction, the use of GBR-C as an alternative to a conventional mineral liner to be produced by earthworks technology has led to the development of a new geosynthetic clay liner.