Creep and relaxati
Creep and relaxation
All important mechanical properties of a geotextile are related to strength and elongation . For long-term behaviour these properties are represented more or less by stress relaxation and creep. Creep represents the long term elongation behavior (mostly under a constant stress) and stress relaxation is the long-term stress behavior ( generally at a constant elongation). Physically both phenomena are strongly interrelated .(28)
As mensioned ,creep is especially important if a construction is designed for static load. If the geotextile has a limited creep resistance, deformation will continue under the effect of constant load. After a wheel load has passed, the stresses in the material will not be completely removed and the structure will remain to some extent in pre-stressed condition.
If , however ,the geotextiles is relaxation- sensitive , the pre-stressing will be removed
