Lixian Instrument Scientific Co., Ltd

ISO 10319 Non-Contact Extensometry for Geosynthetics

Geosynthetics have a wide range of applications in civil engineering, with the most common use being to provide strength to unstable surfaces. 

One use for geosynthetics is to capture debris, such as at construction sites where explosives are used or in cities where building debris must be controlled.


Geotextiles and geosynthetics are essentially composite sheets made from a mix of traditional textiles and petroleum and bio-based plastics.


ISO 10319 is a test method for determining the tensile properties of geosynthetics using 200 mm wide strips. The strength of these materials, 

combined with the geometry of the specimen, can make them difficult to clamp using traditional methods. Lixian’s solution is a capstan-style grip that prevents

 the jaws from breaking and slipping.


Traditional contact extensometers are difficult for any type of textile, and geotextiles are no exception. In fact, due to the difficulties with contact extensometers,

 many companies testing these materials simply rely on crosshead displacement to measure strain. This method is not as accurate as dedicated strain measurement equipment.