Objective

The project objective is the development of geotextile grid structures made of regionally available raw sheep's wool, sea grass or hay in combination with other natural fibres. This includes also the compact processing technology with automated devices and machinery components for the manufacture, cutting, packaging and mounting. A cost-efficient technology for placement is in focus as well. Therefore, the cooperation with manufacturers and end-users is important. The prototypes shall combine an appropriate textile design for steep slopes and contain a barrier function for water and soil against erosion.

Goals

  • Develop requirement-oriented textile structures for erosion protection
  • Develop and integrate an installation system for the specific applications
  • Develop improved test methods for evaluating the relevant parameters

Background

Motivation for this project are the natural catastrophes such as the floodings in June 2013 and August 2002. Besides the needed improvements in catastrophe management, the protection of embankments and stabilisation by natural vegetation and greening should be the main objective of each national authority. Geotextiles play an important role for this task. They can be made of woven, nonwoven, and warp knitted structures which all have to be adapted to the usage specifications. Currently, the processing of products for erosion protection and the high manual efforts for installation generate high costs. Therefore, an effective in-line processing is needed.

Innovation

The innovative aspect of this project approach is that the super coarse geogrid to be developed will be especially suitable for stony, steep slopes and embankments. The combination of high tensile tenacity in lengthwise and crosswise directions will allow keeping high amounts of topsoil even in humid conditions. Additionally, the retaining function for water storage and fertiliser and/or seeds integration will enforce the vegetation growth.

Methodology

For the solution of the modular processing of the super coarse geogrid, a special construction for a warp knitting lab machine will be investigated. The selection of regional raw materials considers hay, wool, hemp and flax as well as textile production waste. The rope-like structures used for the geogrid allow combining the functions of drainage and erosion protection. The installation technology will be developed in a dedicated work package.

Expected results

  • Innovative, competitive and expandable solution principle for super coarse geogrid
  • Reliable testing methods for super coarse structures to characterise properties
  • Technical and technological processing conditions are accessible via lab machine
  • Testing installation technology which allows an analysis of vegetation growth & soil stability
  • Dissemination of research via conferences, fairs, homepages and flyers
  • Active involvement of SMEs via the user committee in Germany and Poland

ProGeo

Erosion protection by geotextiles made from renewable resources

Call Identifier:

16th Cornet Call

Project Start Date:

May, 1st 2014

Project Duration

24 months

 

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