Anti-corrosive composition for iron and steel surfaces and...

C - Chemistry – Metallurgy – 09 – D

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25/110, 400/1617

C09D 5/08 (2006.01) C04B 32/02 (2006.01) C04B 38/02 (2006.01) E04C 5/01 (2006.01)

Patent

CA 1280526

ABSTRACT OF THE DISCLOSURE There is provided an anti-corrosive mixture for iron and steel surfaces which comprises (a) a mixture composed of 5 to 25 % by weight (solid basis) of one or more kinds of aqueous emul- sions or aqueous latices of styrene resin and 5 to 15 % by weight (solid basis) of aqueous emulsion of asphalt, and (b) 60 to 90 % by weight of at least one kind of inorganic pow- der selected from the group consisting of silica stone, silica sand, granite, andesite, shale, kaolin, feldspar, talc, mica, fly ash, slag, iron oxide and graphite. The in- organic powder may also contain 1 to 10 % by weight of lime- stone powder. There is also provided a process for the manu- facture of steam-cured aerated light-weight concrete while applying the above anti-corrosive mixture to the reinfor- cing steel bars used in that process.

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