I know the pH has a big impact on the bacteria and there are some types of bacteria that can stand the high alkali. However, I just want to know what are the other factors that prevent self-healing concrete?
Dear Abdurahim,
what activates bacteria isn't properly pH, because as you write well they can sleep into alkaline medium with no problem for long time. By the way ,bacteria when water (humidity) enters in the concrete, throw a creep for example, awake consuming that water to live and start producing calcium carbonate, as waste of their digestion, that will close the damaged surfaces.
It's amazing to see, but those bacteria can close all gaps within 3 weeks from their activation. I think that if costs can be managed , this technology could save or prolong the life of several types of concrete buildings, specially when maintenance can't be done regularly.
Best,
Alex Reggiani
The more common question is: what are the parameters that are conducive to self-healing (You seem to refer to bacteria based but there are other types of self-healing). If your concern is chemicals that can halt the bacteria activity, then you need to spell out the exact chemicals that you think will be present in your mix. There is an enormous number of chemicals, many of which have even not been tested for bacteria longevity and growth.
Alex Reggiani,
Thanks for your reply, but I am looking for the factors that can affect the bacteria activity such as pH, calcium ions which is too important for the bacteria. My question what is the other factors that I have to figure them for the precipitation of bacteria.
Andi Yusra
Hi sorry as you might not get my point, but I was meaning the factors that can affect the bacteria based on self-healing concrete.
Not as you said prevent concrete.
Best wishes
Abdurahim
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