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Karen Scrivener
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office(s):
MXG232
phone(s): [+41 21 69] 35843,32843
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MISSION
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Research activities at the Laboratory of Construction Materials (LMC) are focused on cementitious materials and on the micro-mechanics and processing of wood.The complexity and heterogeneity of cementitious materials make difficult the establishment of microstructure-property relationships. Within the LMC, quantitative microstructural characterisation and microstructural modelling provide a unique capability to study, understand and improve cementitious materials and their applications, ranging from mixing and placing to long-term performance (durability). Two principal techniques are used : Scanning Electron Microscopy (SEM) and X-ray Diffraction coupled with Rietveld type analysis to quantify the development of crystalline hydration products (and by difference amorphous products). These techniques are complemented by the use of other classic and new techniques (e.g. TEM, TGA, NMR) available within EPFL or through international collaborations.The LMC studies also special cementitious materials which respond to severe environments thanks to properties such as increased resistance to chemical attack or mechanical abrasion, rapid hardening or shrinkage compensation. Moreover, the LMC carries out testing and contract work related to its competence.
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BIOGRAPHY
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De nationalité anglaise, Karen Scrivener est née en 1958. Au cours de sa carrière, ses travaux et sa recherche traitaient des domaines suivants: Identification du développement microstucturale pendant l'hydratation du ciment. Elaboration d'une approche multitechnique pour étudier la microstucture des ciments et bétons, avec accent sur la quantification par analyse des images d'électrons retrodiffusés. Caractérisation de l'auréole de transition de la pâte de ciment autour des granulats. Compréhension des processus de dégardation des bétons, en particulier le gonflement lié à la formation de l'éttringite retardée dans les bétons étuvés.
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MAIN PUBLICATIONS
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Studying nucleation and growth kinetics of alite hydration using μic, Bishnoi S., Scrivener, K.L., Cement and Concrete Research, 39, (), 2009,
µic: A new platform for modelling the hydration of cements, Shashank Bishnoi, Karen L. Scrivener, Cement and Concrete Research, Volume 39, Issue 4, April 2009, Pages 266-274
Innovation in use and research on cementitious material, Karen L. Scrivener, R. James Kirkpatrick (University Illinois, USA), Cem. Concr. Res. (2007), doi:10.1016/j.
cemconres.2007.09.025
Backscattered electron imaging of cementitious microstructures: understanding and quantification
, Scrivener KL, CEMENT & CONCRETE COMPOSITES 26 (8): 935-945 NOV 2004
The interfacial transition zone (ITZ) between cement paste and aggregate in concrete , Scrivener KL, Crumbie AK, Laugesen P, INTERFACE SCIENCE 12 (4): 411-421 OCT 2004
Influence of limestone on the hydration of Portland cements
, Lothenbach, B; Le Saout, G; Gallucci, E; Scrivener, K , Cement and Concrete Research 38 (6):848-860
A thermodynamic and experimental study of the conditions of thaumasite formation, Schmidt, T; Lothenbach, B; Romer, M; Scrivener, K; Rentsch, D; Figi, R, Cement and Concrete Research 38 (3):337-349
Relation of expansion due to alkali silica reaction to the degree of reaction measured by SEM image analysis
, Ben Haha M, Gallucci E, Guidoum A, Scrivener KL., CEMENT AND CONCRETE RESEARCH 37 (8): 1206-1214 AUG 2007
What causes differences of C-S-H gel grey levels in backscattered electron images?, Famy, C., K. L. Scrivener, et al. , Cement and Concrete Research 32(9): 1465-1471., 2002
Si-29 and Al-27 NMR study of alkali-activated slag., Wang, S. D. and K. L. Scrivener , Cement and Concrete Research 33(5): 769-774., 2003
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