Abstract
Abstract: Confining granular materials still a very benefic practice to achieve civil different engineering works. In this paper, the design and analysis of a wall shaped structure made of technical fabric-confined sand will be exposed. This composite structure, made of local materials, where, Polyvinyl Chloride (PVC) technical fabric constitutes a containing envelope and sand a filler material. Designed wall represents a good sustainable development project (idea) to build single story buildings in hot and humid inaccessible areas (Sahara); alternatively, it may provide many other geotechnical applications as retaining walls etc. An experimental campaign to identify the mechanical and physical properties of the studied structure was conducted. Earlier, and not exposed here, a design and analysis of a 1/5 scale model is achieved to evaluate a bearing ability of the wall under vertical compressive and horizontal flexural loads is done. Test to evaluate energy dissipative power of the wall under impact has been also conducted and discussed. DOI: http://dx.doi.org/10.5755/j01.sace.6.1.4691
Highlights
IntroductionGeoconteners, according French standards and definitions of the company “International Geosynthetic Society”, can describe all alveolar structures obtained by alternative connection of flexible or rigid textile bands
Idea of soil confining, applied in Civil Engineering, is relatively older: we can refer to classical used in practice gabion retaining walls, where the material is confined within steel net
The model made with a thickness e = 20 cm and spacing s = 20 cm gives an index of dissipation close to 40.1 %. This value is in the neighborhood of to the median test results; this case can be considered, as early, as an ideal model to design dissipative and protection structures against impact
Summary
Geoconteners, according French standards and definitions of the company “International Geosynthetic Society”, can describe all alveolar structures obtained by alternative connection of flexible or rigid textile bands. In this context, Reiffsteck (1998) had developed an experimental model analyzing a three-dimensional honeycomb structure made of geotextile for use in slope stabilization. Of studies have identified the most influential parameters on the behavior of the designed structural cell, it is mainly geometrical and mechanical parameters (Shimizu and Inui 1990; Rajagopal, Krishnaswany and Madhavi, 1999) This confirms previously published work results, showing that the confinement leads to an improvement of the strength for materials with lower cohesion. As example, Reiffsteck (1996) find out that apparent cohesion for composites made with two different aggregates varies from 156 to 190 kPa
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