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Publications associées (27)

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Microstructural development of early age hydration shells around cement grains

Karen Scrivener, Prakash Chandra Mathur

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

A Novel Method for the Encapsulation of Biomolecules into Polymersomes via Direct Hydration

Jeffrey Alan Hubbell, Davide Demurtas, Andrija Finka

One of the major engineering challenges for the implementation of block copolymer vesicles, or polymersomes, as therapeutic drug carriers is obtaining high encapsulation efficiencies for biomolecules. Here we present it novel method for encapsulation of pr ...

2009

Early hydration of cementitious systems

Underground job sites such as tunnels and mines rely on the quality of recently sprayed concrete to secure freshly excavated zones. Rapid setting and early high strength development are required for safety as well as for the rapid progression of the constr ...

EPFL2009

Novel applications of poly(ethylene glycol)-bl-poly(propylene sulfide) block copolymers

Block copolymers are comprised of repeating chemical groups (blocks) which commonly contain at least one hydrophilic block coupled to at least one hydrophobic block, forming an amphipathic macromolecule. This molecular arrangement drives the self assembly ...

EPFL2008

Study of cementitious materials using transmission electron microscopy

Prakash Chandra Mathur

An important mode of hydration of Ordinary Portland cement (OPC) is via the formation of a shell of hydration products around cement grains. It has been shown so far that shells form not only in OPC but also around C3A grains in a mixture of alite, C3A and ...

EPFL2007

Infrared photofragment spectroscopy of charged amino acid water clusters in the gas phase

Anthi Kamariotou

We present in this work a new technique, which combines laser photofragmentation spectroscopy with tandem mass spectrometry, for structural investigations of biomolecular ions in the gas phase. A novel apparatus was designed and built for the implementatio ...

EPFL2006

Low-profile mechanisms in composites with thermoplastic/polyester blend matrices

Xavier Bulliard

Unsaturated Polyester (UP) resins are extensively used as a matrix for the production of composites due to their low cost and versatility. Their significant polymerization shrinkage has however a negative impact on the dimensional stability of the molded p ...

EPFL2004