What is the minimum concentration of carbon dioxide or ion of carbonate that leads to occur the carbonation in concrete ? or the concentration of Ca( OH)2.
As the article (Carbonation in concrete infrastructure in the context of global climate
change – Part 1: Experimental results and model development) byS. Talukdar a,⇑, N. Banthia a, J.R. Grace
There is no simple answer to this question, because this would be influenced by the composition of the cement/concrete, the composition of the solution, the temperature, pressure etc.
The easiest way to figure out some number that might relate to the real concentrations of carbonate / bicarbonate / carbonic acid that would degrade cement/concrete is to perform thermodynamic calculations / simulations using geochemical modelling software tools like PHREEQC or GWB.
A better way still is to perform controlled experiments on the degradation carbonatation of cement/concrete.
Hi Pieter Bots
I repeat my thank to you .
Your answer based on deep experience in carbonation phenomena .
I would like to contact with about the carbonation and chloride penetration in concrete.
Please, Could I contact with about that by my Email ?
regard
Abbas AL-Ameeri
PhD student /Construction Materials
Brighton University
I thank you .
Can I get a copy soft of this chapter because there is no access of download in my University of it .
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