Publications by Alexandra Quennoz

Interactions between alite and C(3)A-gypsum hydrations in model cements

This paper focuses on the interactions that occur between cement phases during early hydration, especially between the hydration of alite and C(3)A-gypsum. This study shows that alite reaction is accelerated in the presence of gypsum. This acceleration was ...

Pergamon-Elsevier Science Ltd2013

Hydration of C(3)A-gypsum systems

Karen Scrivener, Alexandra Quennoz

Hydration of C(3)A-gypsum systems with different gypsum additions was investigated in terms of the phase assemblage, kinetics and microstructural development. The second stage of the reaction, which begins after the depletion of gypsum, was of particular i ...

Pergamon-Elsevier Science Ltd2012

Hydration of C3A with Calcium Sulfate Alone and in the Presence of Calcium Silicate

Alexandra Quennoz

Tricalcium aluminate (C3A) is one of the main constituents of Portland cement. Even though it represents less than 10% of the total composition, its strong reaction with water can lead to a rapid setting, called flash set. Gypsum is added to regulate this ...

EPFL2011

Calciun silicate - calcium aluminate interactions and their influence on cement early hydration

Karen Scrivener, Emmanuel Gallucci, Alexandra Quennoz

2011

Influence of the gypsum conetent on the phase assemblage and the microstructure of tricalcium aluminate - gypsum pastes

Karen Scrivener, Alexandra Quennoz

2010

Decoupling method for heat evolution curves of model cements - Influence of the presence of C3A-gypsum on the alite hydration

Karen Scrivener, Emmanuel Gallucci, Alexandra Quennoz, Cyrille Dunant

2010

Influence of the gypsum amount on the hydration of tricalcium aluminate in C3A-gypsum and in alite-C3A-gypsum systems

Karen Scrivener, Emmanuel Gallucci, Alexandra Quennoz, Cyrille Dunant

2009

Hydration of tricalcium aluminate and gypsum alone and in the presence of alite

Karen Scrivener, Emmanuel Gallucci, Alexandra Quennoz

2008