Publications de Emmanuelle Boehm Courjault

The impact of calcite impurities in clays containing kaolinite on their reactivity in cement after calcination (vol 53, 44, 2020)

Karen Scrivener, Emmanuelle Boehm Courjault, Franco Alberto Zunino Sommariva

SPRINGER2021

The impact of calcite impurities in clays containing kaolinite on their reactivity in cement after calcination

Karen Scrivener, Emmanuelle Boehm Courjault, Franco Alberto Zunino Sommariva

The use of supplementary cementitious materials as a partial replacement for Portland cement is the most effective way to reduce the carbon footprint of the concrete industry. Raw clays containing kaolinite (kaolin) are promising substitute materials. In t ...

SPRINGER2020

Hydration reactions and stages of clinker composed mainly of stoichiometric ye'elimite

Mohsen Ben Haha, Karen Scrivener, Emmanuelle Boehm Courjault, Frank Bullerjahn

Ye'climitc (Ca4Al6O12SO4 or C(4)A(3)(S) over bar) is the main hydraulic mineral present in calcium sulfoaluminate cement (CSA). The hydration of ye'elimite is responsible for the early age cement properties. We identify 5 stages in the hydration of neat st ...

Pergamon-Elsevier Science Ltd2019

Investigation of C-A-S-H composition, morphology and density in Limestone Calcined Clay Cement (LC3)

Karen Scrivener, Emmanuelle Boehm Courjault, François Henri Avet

In this study, the C-A-S-H composition, morphology and density are characterized for Limestone Calcined Clay Cement (LC3-50) blends containing clays with various kaolinite contents. Significant incorporation of aluminium is observed for LC3-50 blends compa ...

Pergamon-Elsevier Science Ltd2019

Composition, silicate anion structure and morphology of calcium silicate hydrates (C-S-H) synthesised by silica-lime reaction and by controlled hydration of tricalcium silicate (C3S)

Emmanuelle Boehm Courjault

The main product of Portland cement hydration is C-S-H. Despite constituting more than half of the volume of hydrated pastes and having an important role in strength development, very little is known about the factors that determine its morphology. To inve ...

Maney Publishing2015

EBSD, SEM and FIB characterisation of subsurface deformation during tribocorrosion of stainless steel in sulphuric acid

Stefano Mischler, Marco Cantoni, Emmanuelle Boehm Courjault

The tribocorrosion behaviour of a 304L stainless steel/alumina contact was investigated in sulphuric acid at two imposed potentials (cathodic and passive) The metal deformation below the surface was investigated by analyzing cross sections using secondary ...

2010

EBSD: a powerful microstructure analysis technique in the field of solidification

Alain Jacot, Michel Rappaz, Christoph Niederberger, Emmanuelle Boehm Courjault, Aurèle Mariaux, Mario Alberto Salgado Ordorica

This paper presents a few examples of the application of electron back-scatter diffraction (EBSD) to solidification problems. For directionally solidified Al-Zn samples, this technique could reveal the change in dendrite growth directions from < 100 > to < ...

2009