Soil—geotextile system

Mlynarek, j., Rollin, A. L., Lafleur, J. Bolduc, G. 1990. Microstructural analysis of a soil/geotextile system. In Peggs, 1. D. (ed.) Geosynthetics Microstructure and Performance. ASTM STP 1076, American Society for Testing and Materials, Philadelphia, 137-146. 

Filtration can be defined as a soil—geotextile system in equilibrium that allows for adequate liquid flow with hmited soil loss across the plane of the geotextile over a lifetime of service compatible with the application under consideration (Koerner, 2005). Therefore, the filter function refers to geotextile pore size distribution (PSD) or filtration opening size and to the geotextile cross-plane permeability (or permittivity). 

ASTM D5101, Standard Test Method for Measuring the Soil-Geotextile System Clogging... 

Rohde, J. R. Gribb, M. M. 1990. Biological and Particulate Clogging of Geotextile/Soil Filter Systems. In Koerner, M. (ed.) Geosynthetic Testing for Waste Containment Applications. ASTM STP 1081, American Society for Testing and Materials, Philadelphia, 299-312. 

After the test, the permeabihty of the geotextile normal to the plane, the permeability of the soil—geotextile filtering system, clogging, and blinding levels are evaluated. 

Faure, Y., Gourc, J.P., Brochier, P., RoUin, A., 1986. Soil-geotextile interaction in filter systems. In Proc. of the 3rd International Conference on Geotextiles, Wien, Austria, vol. II, 671-676. 

In gas-collector systems, either a granular soil layer or a needle-punched nonwoven geotextile is placed directly beneath the LML or clay of a composite cap system. Gas compatibility and air transmissivity are the design factors that must be considered. Methane, the most predominant gas, should be compatible with most types of geotextiles including PET, PP, and PE. 

In separation, the primary function of the geotextile is to prevent intrusion of one material into another in order to prevent contamination of either material by the other. In the case of an aggregate being placed over a firm foundation soil, the purpose is to maintain the drainage integrity of the aggregate wall application is similar. In landfill application, the purpose is to prevent intrusion of waste material into the leachette collector system. 

Polymeric stabilizer materials are a subset of a much larger recent development in civil engineering. ASTM has defined a geosynthetic as a planer product manufactured from polymeric materials used with soil, rock, or other geotechnical-related material as part of a civil engineering system. A geotextile is a permeable geosynthetic made of textile materials. 

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