Geotextiles tensile strength

High performance fibers are generally characterized by remarkable unit tensile strength and resistance to heat, flame, and chemical agents that normally degrade conventional fibers. Applications include uses in the aerospace, biomedical, civil engineering, constmction, protective apparel, geotextiles, and electronic areas. 

Geotextile function Tensile strength Elongation Chemical resistance Biode- gradability Flexibility Friction property Interlock Tear resistance Penetration Puncture resistance... 

The positive effect of the use of geotextile is documented by many field studies as well as comprehensive researches, namely. Potter and Currer (1981) and Robnett and Lai (1982). The measured surface deformation on the unbound layer laid over a subgrade with CBR 2% was much lower when a 450 g/m polypropylene geotextile with a tensile strength of 10.5 kN/m was used (Potter and Currer 1981). 

Geogrids have a much higher tensile strength than geotextiles values usually range from 35 to 100 kN/m. 

For the geotextile to provide an effective reinforcement function, it should have not only a high tensile strength, but also a high tensile modulus so that its resistance to tensile loads generated within the soil occurs at sufficiently small strains to prevent excessive movement of the reinforced soil structure. It is self-evident that decreases in these properties with time (i.e. creep behaviour) must be low, and that the polymers used should have resistance to degradation by the soil. An estimate of the anticipated reduction in strength can be determined from an analysis of creep strain versus time plots for various stress levels and a suitable reduction factor applied. 

Geosynthetic properties required for reinforced slopes are similar to those for other reinforcements. Allowable tensile strength, soil and geosynthetic friction, Eg and ga, and creep strength are the most important.The anticipated half-life of geotextile reinforcements is between 500 and 5000 years ... 

EN ISO 10319 1996 Geotextiles - Wide-width Tensile Test or EN 29073-3 1992, Textiles - Test Methods for Nonwovens - Part 3 Determination of Tensile Strength and Elongation... 

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