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Observation of Diffusion Behavior of Trace Elements in Hardened Cement Pastes by LA-ICP-MS

Published online by Cambridge University Press:  01 February 2011

Taiji Chida  and
Daisuke Sugiyama
Taiji Chida
Affiliation:
Central Research Institute of Electric Power Industry, 2-11-1, Iwado-Kita, Komae, Tokyo 201-8511, Japan
Daisuke Sugiyama
Affiliation:
Central Research Institute of Electric Power Industry, 2-11-1, Iwado-Kita, Komae, Tokyo 201-8511, Japan
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Abstract

Diffusion coefficients of iodine (I), cesium (Cs) and strontium (Sr) in solid cement blocks of ordinary portland cement (OPC) and low-heat portland cement containing 30 wt% fly ash (FAC) are measured by in-diffusion experiment. By using “laser ablation inductively coupled plasma mass spectrometry”, the penetration profiles of trace elements by diffusion were obtained quantitatively in cement solids. The apparent diffusion coefficients of the near-surface of the cement samples were estimated to be about 10-13 m2 s-1for I, Cs and Sr. Lower diffusion coefficients were observed for FAC than those obtained for OPC.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 1107: Scientific Basis for Nuclear Waste Management XXXI , 2008 , 585
Copyright
Copyright © Materials Research Society 2008

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