3. Rheological tests under mono-loading

Although tensile testing is very useful, because it is easy to perform and interpret, its field of application is limited by the phenomenon of striction on the high-strain side. Moreover, precise measurement of specimen deformation in the small-strain range requires the use of extensometers or strain gauges.

We won't discuss the compression test here; its mechanical analysis is very similar to that of the tensile test. However, while it enables greater deformations to be achieved, since the cross-sectional area on which the force is exerted increases constantly, its implementation requires precautions to minimize the influence of material friction on the tools [8] and [26] .