Ignacio Segura

TL;DR: In this article, the early age hydration mechanisms of accelerated CEM I pastes were evaluated using liquid phase analysis, conductimetry, isothermal calorimetry and in situ XRD and SEM.

TL;DR: In this paper, a diffusion-reaction numerical model is proposed to simulate the response of concrete exposed to external sulfate attack, where diffusion properties are modified based on the strain reached and the ratio of porosity filled by ettringite.

TL;DR: MPC mortar with moderate porosity and roughness appears to be the most feasible material to be used for the development of green concrete walls, based on the assessment of the different bioreceptivities of such material.

TL;DR: In this paper, the role of porosity in the resistance of concrete and mortar to external sulphate attack was evaluated and it was shown that porosity could also have a positive effect on durability by generating additional space to accommodate the expansive phases.

TL;DR: In this paper, a simplified chemo-mechanical methodology is proposed to assess the potential damage in concrete elements exposed to sulfate rich environments, which is derived from a numerical model taking into account sulfate consumption, acceleration of the penetration induced by cracking and decrease in diffusivity caused by pore filling.