Constitutive models and statistical analysis of the short-term tensile response of geosynthetics after damage

The objective of this research was to analyse the tensile response three geosynthetics, apply constitutive equations, and propose values for model parameters represent nonlinear behaviour these materials in short-term, supported by statistical analysis. Data specimens a nonwoven geotextile, woven geogrid reinforcement geocomposite previously submitted mechanical damage, abrasion damage followed were analysed. Nonlinear regressions experimental results performed fit load vs. strain curves equations. For each geosynthetic, damaged statistically compared those undamaged ones observe influence induced on material. Experimental with obtained models verify if properties properly estimated. significant changes noticed only after sequential damage. geocomposite, predominant due considerable shape curves. In general, polynomial fitted ultimate strength slightly better, while hyperbolic-based presented better approximation secant stiffness. models, estimating from applying adjustment coefficients reduction factors allowing considered promising, slight differences average median Contrary literature, parameter α not material constant, as it varied according condition curve.