Publications de Fabien Jacques Michel Georget

Towards a two-step assessment of the chloride ingress behaviour of new cementitious binders

Karen Scrivener, Fabien Jacques Michel Georget, William Wilson

A wide range of systems were exposed to a seawater-like chloride concentration (0.5 M Cl−) for bulk diffusion experiments over 0.5, 1 and 4 years. Combined with previously published findings on chloride binding and mini-migration testing, the results showe ...

Pergamon-Elsevier Science Ltd2024

Reconciliation of pore structure characterization methods: The simple case of PC-limestone cement pastes

Karen Scrivener, Shiyu Sui, Fabien Jacques Michel Georget, William Wilson

Almost all properties of hydrated cementitious materials depend strongly on their pore structure. Many methods to quantify porosity have been applied to cementitious materials, but there is a huge confusion in the literature about the utility of these meth ...

Pergamon-Elsevier Science Ltd2024

Advances in hydration and thermodynamics of cementitious systems

Patrick Juilland, Karen Scrivener, Aslam Kunhi Mohamed, Thomas Matschei, Fabien Jacques Michel Georget

Optimising the hydration of cementitious materials is crucial to leverage their full potential and avoid wasting resources, embodied energy and CO2. Understanding the fundamental mechanisms is key to reach these objectives. In this paper, we review progres ...

Pergamon-Elsevier Science Ltd2023

Insights on chemical and physical chloride binding in blended cement pastes

Karen Scrivener, Julien Nicolas Gonthier, Fabien Jacques Michel Georget, William Wilson

This study investigates chloride binding in blended cement pastes exposed to 0.5 M NaCl solutions (with and without pH adjustment) using X-ray diffraction and energy-dispersive X-ray spectroscopy image analysis (edxia). The aim is to better understand the ...

Pergamon-Elsevier Science Ltd2022

Simple automation of SEM-EDS spectral maps analysis with Python and the edxia framework

Karen Scrivener, Fabien Jacques Michel Georget, William Wilson

In a recent article, we described the edxia framework, a user-friendly framework to analyse the microstructure of cementitious materials using SEM-EDS hypermaps. The manual approach presented was shown to be efficient to answer the relevant scientific ques ...

WILEY2022

Unravelling chloride transport/microstructure relationships for blended-cement pastes with the mini-migration method

Karen Scrivener, Fabien Jacques Michel Georget, William Wilson

A chloride mini-migration method is proposed to estimate effective diffusion coefficients at the scale of the cement paste and to investigate mechanisms with complementary microstructure analyses on the same material. Blended-cement pastes with a wide rang ...

Pergamon-Elsevier Science Ltd2020

edxia: Microstructure characterisation from quantified SEM-EDS hypermaps

Karen Scrivener, Fabien Jacques Michel Georget, William Wilson

The characterisation of cement paste microstructure is an important step towards understanding durability mechanisms in cementitious materials. Scanning electron microscopy (SEM) coupled with energy dispersive spectroscopy (EDS) is a widely used technique ...

Pergamon-Elsevier Science Ltd2020

Evolution of microstructural changes in cement paste during environmental drying

Karen Scrivener, Hamed Maraghechi, Wioletta Soja, Fabien Jacques Michel Georget

Exposure of concrete to the atmosphere changes the microstructure of the cement paste. However, knowledge about the alteration of the porosity due to drying is typically not considered in deterioration processes of the hardened cement paste. The purpose of ...

Pergamon-Elsevier Science Ltd2020

Quantification methods for chloride binding in Portland cement and limestone systems

Karen Scrivener, Wei Sun, Hamed Maraghechi, Shiyu Sui, Fabien Jacques Michel Georget, William Wilson

This paper presents a comparison of methods to quantify the chloride binding capacity for cementitious materials composed of Ordinary Portland Cement (OPC) and Limestone (LS, 0 to 55% replacement). Physical and chemical chloride bindings were investigated ...

Pergamon-Elsevier Science Ltd2019

Impact of the microstructure model on coupled simulation of drying and accelerated carbonation

Fabien Jacques Michel Georget

During carbonation, the microstructure of a cement paste is strongly modified, which induces a dynamic feedback loop impacting the global advancement of the reaction. In this study, we investigate the effect of the microstructure model on simulations of ac ...

Pergamon-Elsevier Science Ltd2018

Reactive transport modelling of cement paste leaching in brines

Fabien Jacques Michel Georget

We propose and analyse a unified reactive transport model for leaching of cement paste in brines, with and without CO2. We investigate the impact of the boundary conditions on the rate of propagation of the reaction. In agreement with experiments, we obser ...

Pergamon-Elsevier Science Ltd2018