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Rapid, Robust, and Relevant (R3) Reactivity Test for Supplementary Cementitious Materials

Publications associées (38)

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Continuous high-temperature polymerization of MMA at pilot scale

Thierry Meyer, Philip Nising

The kinetic properties of the Me methacrylate (MMA) polymn. at pilot scale for a given temp. range (130-170 Deg) were detd. by differential scanning calorimetry and batch expts. reflecting initiation by MMA peroxides, depropagation of the living chains as ...

2005

Following several tragic chemical accidents that have occurred in recent years, some directives concerning chemical process safety have been issued. The Seveso directive, for example, requires a precise description of the consequences of a possible chemica ...

EPFL2004

A new tool for the study of polymerization under supercritical conditions - preliminary results

Thierry Meyer, Sophie Fortini, Philip Nising, Frédéric Lavanchy

Efficient stirring is needed to realize heat flow anal. with a thermally homogeneous medium. Because dispersion polymn. with supercrit. fluids can be destabilized under stirring, a preliminary target has been to find a compromise between synthesis and basi ...

2004

Reaction calorimetry in supercritical carbon dioxide - methodology development

Thierry Meyer, Sophie Fortini, Frédéric Lavanchy

Reaction calorimetry is an efficient tool used to obtain kinetic, thermodn. and safety data. A reaction calorimeter, RC1e-HP350, developed in collaboration with Mettler-Toledo GmbH, allows investigating chem. reactions under supercrit. conditions. The main ...

2004

Supercritical calorimetry: an emerging field

Thierry Meyer, Sophie Fortini, Frédéric Lavanchy

Calorimetry (adiabatic, isothermal, differential, oscillating or acoustic) is generally based on heat-flow measurements of the studied system. Most of its applications are dedicated to kinetic-parameter detn., safety studies and process optimization, phase ...

Schweizerische Chemische Gesellschaft2002

A unique bench-scale heat flux calorimeter is described, which is capable of detecting the low heat signal of an animal cell culture (a max. of 200 mW/l is produced with a batch culture of SF9 insect cells). After the tech. modifications that enhanced the ...

2002

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Calorimetry has shown real potential at bench-scale for chem. and biochem. processes. The aim of this work was therefore to scale-up the system by adaptation of a std. com. available 300-L pilot-scale bioreactor. To achieve this, all heat flows entering or ...

2002

Biological reaction calorimetry: development of high sensitivity bio-calorimeters

Urs von Stockar, Ian William Marison

A review, with .apprx.43 refs. A review of different types of biol. reaction calorimetry systems currently used together with the operating principles is presented. The av. resoln. of these systems is approx. 20 to 1000 mW l-1, sufficient for studies of a ...

1998

Use of reaction calorimetry to monitor and control microbial cultures producing industrially relevant secondary metabolites

Urs von Stockar, Ian William Marison

Bench-scale heat flux calorimetry is applied to monitor complex microbial systems producing secondary metabolites and having a rheol. complex behavior. With such systems, biol. metabolic activity can only be measured accurately if calorimetry is improved b ...

1998

Curing kinetics of commercial polycarbosilane have been measured using differential scanning calorimetry in air between 140 and 220 degrees C. It was found that the total heat of curing increases linearly with temperature. At constant temperature, the rate ...

1995