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Hi Robert,
Here is one paper that I know
Krishnamurthy RV, Schmitt D, Atekwana EA, Baskaran M (2003) Isotopic
investigations of carbonate growth on concrete structures. Appl Geochem
18:435–444

Tsigabu

On Thu, Jul 22, 2010 at 10:26 AM, Robert van Geldern <[log in to unmask]>wrote:

> Greetings,
>
> attention: this is a scientific question. :-)
>
> A group of colleagues deal with the mineralogy and synthesis of ordinary
> portland cement (opc), so cement in the sense of concrete or mortar. The
> question arose if there are some isotope studies in the field of "concrete".
> I am not aware of any isotope studies on these systems but I found a (quite
> short) chapter about this in Clark and Fritz (1997, Environmental Isotopes
> in Hydrogeology, p. 264-265) mainly dealing with the fractionation between
> H2O - hydroxide and the influence of the portlandite reaction (pH > 12) on
> the isotopic composition of groundwaters.
>
> Does anyone has some further readings on this issue?
>
> regards,
> Robert
>
> BTW: isogeochem is perfect as it is. No need to change anything. - Just my
> 2 Euro cents.
>
> --
> Dr. Robert van Geldern
> GeoZentrum Nordbayern / Applied Geosciences
> University of Erlangen-Nuremberg
> Schlossgarten 5
> 91054 Erlangen, Germany
>
> [log in to unmask]
> www.gzn.uni-erlangen.de
> fon: +49-9131-8524780
> fax: +49-9131-8529294
> room: O 0.106 (office)
>



-- 
Tsigabu A. Gebrehiwet
2775 St. Clair RD Apt- K102
Idaho Falls, ID 83404