In this work, analytical and numerical solutions of the condition for discontinuous bifurcation of thermodynamically consistent gradient-based poroplastic materials are obtained and evaluated. The main aim is the analysis ...

In this work, the thermodynamically consistent non-local model for concretes subjected to high temperatures originally proposed by Ripani, et al (2014) [1] is extended, in order to evaluate the failure behavior of partially ...

In this work, a thermodynamically consistent non-local poroplastic constitutive theoryfor quasi-brittle materials like concrete subjected to high temperature is presented [1]. Thereby, gradient poroplasticity and fracture ...

This work focuses on the evaluation of temperature effects on concrete failure behavior and modes by means of a realistic thermodynamically consistent non-local poroplastic constitutive model, previously developed by the ...

Concrete materials subjected to long term exposures to high temperatures suffer severe degradations in its mechanical properties (cohesion, friction, strength and stiffness) and changes in their failure mechanisms. These ...

In this paper a new finite element formulation for numerical analysis of diffused and localized failure behavior of saturated and partially saturated gradient poroplastic materials is proposed. The new finite element ...

The use of recycled aggregates in concrete to partially substitute the natural ones has strongly increased in the last decades. Due to both, environmental and economical reasons, a relevant and increasing proportion of the ...

The action of high temperature in concrete is a field of much interest and attention due to its strong influence in strength, durability and serviceability conditions. Long-term exposures to high temperature fields strongly ...