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Karen Scrivener

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Related publications (271)

Microstructural development of early age hydration shells around cement grains

Karen Scrivener, Prakash Chandra Mathur, Emmanuel Gallucci

An important microstructural aspect of the early hydration of Portland cement (K) is the formation of a shell of hydration products around cement grains. There is, at present, limited information on the mechanism of formation of the shell and of the chemis ...

Pergamon-Elsevier Science Ltd2010

μic: A new platform for modelling the hydration of cements

Karen Scrivener, Shashank Bishnoi

A new modelling platform, called mu ic has been developed to model the microstructural evolution of hydrating cement paste. The platform uses the vector approach and can be used for modelling particulate reactions including the hydration of many different ...

Pergamon-Elsevier Science Ltd2009

Simulation of volume changes of cement paste at early age

Amor Guidoum, Karen Scrivener, Ines Jaouadi

The evolution of early age mechanical properties and volume change of cement paste is performed through Finite Element analysis on a 3D computer-generated cement paste. The time evolution of the hydrating microstructure is generated by μic(mike), a vectori ...

2009

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

Cyrille Dunant, Karen Scrivener, Emmanuel Gallucci, Alexandra Quennoz

2009

Nanotechnology and Cementitious Materials

Karen Scrivener

The relevance of nanotechnology and more specifically nanoscience to cementitious materials is discussed. Some examples are given of the influence of nanosciences on our understanding of cementitious materials and its impact on the applications of these ma ...

Springer-Verlag New York, Ms Ingrid Cunningham, 175 Fifth Ave, New York, Ny 10010 Usa2009

Physical and microstructural aspects of sulfate attack on ordinary and limestone blended Portland cements

Karen Scrivener, Barbara Lothenbach

The consequences of external sulfate attack were investigated by traditional test methods, i.e. length and mass change, as well as by a newly developed, surface sensitive ultrasonic method, using Leaky Rayleigh waves (1 MHz). The macroscopic changes are di ...

Pergamon-Elsevier Science Ltd2009

Quantitative distribution patterns of additives in self-leveling flooring compounds (underlayments) as function of application, formulation and climatic conditions

Karen Scrivener

The distributions of organic additives in self-leveling flooring compounds (SLCs) were investigated using laser-scanning microscopy for the selective visualization of the additives, which had been previously stained by a fluorescent dye. The distributions ...

Pergamon-Elsevier Science Ltd2009

Improved quantification of alite and belite in anhydrous Portland cements by Si-29 MAS NMR: Effects of paramagnetic ions

Karen Scrivener, Vanessa Kocaba

The applicability, reliability, and repeatability of Si-29 MAS NMR for determination of the quantities of alite (Ca3SiO5) and belite (Ca2SiO4) in anhydrous Portland cement was investigated in detail for 11 commercial Portland cements and the results compar ...

Elsevier2009

Importance of microstructural understanding for durable and sustainable concrete

Karen Scrivener

This paper presents the importance of microstructural studies for understanding concrete durability. Three examples-sulfate attack; alkali silica reaction and bacteriogenic corrosion in sewers arc used to illustrate the pitfalls which can arise from conven ...

Crc Press-Taylor & Francis Group, 6000 Broken Sound Parkway Nw, Ste 300, Boca Raton, Fl 33487-2742 Usa2009

Quantitative microstructural characterisation of cement paste submitted to different moderate temperature and loading conditions

Karen Scrivener, Emmanuel Gallucci

The temperature is known to influence the strength and durability of concrete. Temperature has also a great influence on the creep of cementitious materials. Previous investigations have not provided a complete understanding of these effects; in particular ...

2009

Studying nucleation and growth kinetics of alite hydration using μic

Karen Scrivener, Shashank Bishnoi

This paper investigates the applicability of nucleation and growth mechanisms to the hydration of alite. Various possible mechanisms of nucleation and growth were simulated using the recently-developed microstructural modelling platform mu ic. Comparison w ...

Pergamon-Elsevier Science Ltd2009

Innovation in use and research on cementitious material

Karen Scrivener

In this paper we discuss innovations in concrete technology which are currently being applied in the field-namely high and ultra high performance (strength), and self consolidating concrete. We discuss the factors which have enabled these developments and ...

2008

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

Karen Scrivener, Emmanuel Gallucci, Alexandra Quennoz

2008

Importance Of Microstructural Understanding For Durable And Sustainable Concrete

Karen Scrivener

This paper presents the importance of microstructural studies for understanding concrete durability. Three examples - sulfate attack; alkali silica reaction and bacteriogenic corrosion in sewers are used to illustrate the pitfalls which can arise from conv ...

R I L E M Publications, 91 Ave President Wilson, 94235 Cachen, France2008

Equivalency points: Predicting concrete compressive strength evolution in three days

Ian Smith, Karen Scrivener, Marco Viviani

Knowledge of the compressive strength evolution of concrete is critical for activities such as stripping formwork, construction scheduling and pre-stressing operations. Although there are several procedures for predicting concrete compressive strength, rel ...

Pergamon-Elsevier Science Ltd2008

Microstructure development of calcium aluminate cement accelerated with lithium sulphate

Karen Scrivener, Christophe Gosselin

2008

A thermodynamic and experimental study of the conditions of thaumasite formation

Karen Scrivener, Thomas Schmidt, Barbara Lothenbach

The formation of thaumasite was investigated with the progressive equilibrium approach (PEA). This approach experimentally simulates the conditions of various levels of sulfate addition in hardened cement pastes. The influence of limestone, time, C(3)A con ...

Pergamon-Elsevier Science Ltd2008

Influence of limestone on the hydration of Portland cements

Karen Scrivener, Emmanuel Gallucci, Barbara Lothenbach

The influence of the presence of limestone on the hydration of Portland cement was investigated. Blending of Portland cement with limestone was found to influence the hydrate assemblage of the hydrated cement. Thermodynamic calculations as well as experime ...

Pergamon-Elsevier Science Ltd2008

Durability Of Field Concrete Made Of Portland Cement And Supplementary Cementitious Materials Under Several European Exposure Conditions

Karen Scrivener, Emmanuel Gallucci, Aude Chabrelie

Deterioration of cementitious materials by sulfate ions is a concern for concrete in contact with ground water (and in a lesser extent sea water) in many parts of Europe, and is an important issue for underground construction identified as a major area for ...

R I L E M Publications, 91 Ave President Wilson, 94235 Cachen, France2008

Crystallisation of calcium hydroxide in early age model and ordinary cementitious systems

Karen Scrivener, Emmanuel Gallucci

The distribution and morphology of CH particles in various cementitious systems was investigated to determine which parameters influence their nucleation and growth. Morphological image analysis of SEM-BSE images of polished cross-sections was used to meas ...

Pergamon-Elsevier Science Ltd2007

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