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re: Muriatic acid Alternatives for masonry



The City of Chicago is using a high pressure water and baking soda solution to surface clean concrete and brick. This is obviously an abrasive rather than chemical cleaning technique, but ther's no hazardous chemical worries, and it can be washed away so the clean-up is more sound than using grit. I don't know if it will give the same color restoration effect that muriatic acid does.

Try:

http://egov.cityofchicago.org/StreetsAndSan/StreetOperations/GraffitiRemoval.html

for a contact 

DRI
NORBIC
Chicago
===============================================================================================
 >>  Hello folks,

 >>  Does anyone know if there are any environmentally friendly cleaning
 >>  products
 >>  available to replace the use of muriatic acid on stone and brick surfaces?

 >>  Thanks
 >>  Denise Bechdel


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,

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