Publications

Pro024

Nano- and microstructure of Portland cement paste



Title: Nano- and microstructure of Portland cement paste
Author(s): J. Stark, B. Möser
Paper category : conference
Book title: International RILEM Workshop on Frost Resistance of Concrete
Editor(s): M. J. Setzer, R. Auberg and H. - J. Keck
Print-ISBN: 2-912143-30-6
e-ISBN: 2351580370
Publisher: RILEM Publications SARL
Publication year: 2002
Pages: 15 - 28
Total Pages: 14
Nb references: 18
Language: English


Abstract: The visualisation of structures resulting from processes taking place at a few nanometers is immensely important when studying the properties of concrete and mortar. Electron microscopy is in principle capable to obtain images of structural constituents in this size. Unfortunately, studies with conventional electron microscopes are subject to serious limitations: the specimens must be high-vacuum-stable or correspondingly prepared and the specimen must generally be electrically conductive or be made conductive by a coating of the surface. For these reasons an Environmental Scanning Electron Microscope with Field Emission Gun (ESEM-FEG) in different operating modes has been used to investigate wet materials in their native state. These methods provide deep insights into the moist micro and nano world. It even makes it possible to carry out sophisticated observations of hydration processes in complicated multi-phase systems, such as Portland cement.


Online publication: 2010-06-28
Publication type : full_text
Public price (Euros): 0.00