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Photocatalytic Concrete Admixture?

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Asked: September 19, 20202020-09-19T23:07:27-07:00 2020-09-19T23:07:27-07:00In: Concrete
Justin R
Justin R

Justin R

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Justin R User

I am looking for expert advice with regard to the use of photocatalytic concrete and the admixture TiO2.  I have never used this material, my design/build team has never used it, and most tilt-up subs that we speak with laugh when we ask about it.

My client is interested in it because of the “self-cleaning” qualities and the low maintenance aspect of it.

Also, I am trying to figure out if it is supposed to be sealed somehow?  This is for a commercial office building, so obviously we do not want to allow any moisture within the wall cavity.  Also, IF we want to introduce color (paint) anywhere, can the material be painted?  I realize that defeats the purpose, but it would be in small areas for design purposes only.

Any help would be much appreciated!

Thanks,

Justin Rogers, AIA

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  1. AdityaBhandakkar

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    AdityaBhandakkar User
    2020-09-24T21:39:53-07:00Added an answer on September 24, 2020 at 9:39 pm

    Hi Justin R.

    I am researcher  in field of Nanotechnology, so I am a eligible person for answering your question.

    The photocatalytic activity is tested in air purification after NOx removal. Also the self cleaning properties are tested during dye removal.

    TiO2 effects the hydrated Cement: It is a stable , during hydrated process.

    TiO2 makes C-S-H bond more compact , which increase the compressive strength.

     

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