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Pro045

Nanoscale measurements of cement hydration during the induction period



Title: Nanoscale measurements of cement hydration during the induction period
Author(s): Jeffrey S. Schweitzer, Richard A. Livingston, Claus Rolfs, Hans-Werner Becker, Stefan Kubsky, Timothy Spillane, Marta Castellote, Paloma G. de Viedma
Paper category : conference
Book title: NICOM 2: 2nd International Symposium on Nanotechnology in Construction
Editor(s): Y. de Miguel, A. Porro and P.J.M. Bartos
Print-ISBN: 2-912143-87-X
e-ISBN: 2912143888
Publisher: RILEM Publications SARL
Publication year: 2006
Pages: 125 - 132
Total Pages: 8
Nb references: 16
Language: English


Abstract: Nanoscale analyses of materials with ion beams have proven to be a valuable technique for describing the spatial distributions of specific elements in materials. We have used the 15N(p,alpha,gamma)12C reaction to study the nanoscale time dependence of the chemical reactions involved in the curing of cement. By using the Dynamitron Tandem accelerator at Ruhr Universität, Bochum, Germany, we have achieved a few nanometer spatial resolution at the surface of cement grains and have studied the hydrogen distributions to a depth of about 2 micrometers. By stopping the chemical reactions at arbitrary times, the time dependence of the chemical reactions involving specific components of cement are investigated. The effects of additives on the chemical reactions have been studied, as have materials that simulate components of concrete.


Online publication: 2005-11-17
Publication type : full_text
Public price (Euros): 0.00