Process for manufacturing concrete of high corrosion resistance

Details Process for manufacturing concrete of high corrosion resistance Process for manufacturing concrete of high corrosion resistance

1977-07-13

1978-10-03

Poer, James

Compositions: coating or plastic

Coating or plastic compositions

Metal-depositing composition or substrate-sensitizing...

C04B 702

Patent

active

041182421

ABSTRACT:
Concrete having high resistance to corrosion is prepared by using low aluminate (C.sub.3 A) cement, preferably having less than 5 weight per cent of aluminate, and, in addition to conventional concrete constituents, at least 10 weight per cent of finely divided, reactive silica based on the cement weight.
A highly corrosion resistant cement composition comprises, in addition to conventional cement constituents, 70 - 90 parts by weight of low aluminate cement and 10 - 30 parts by weight of reactive silica.
An additive useful for making concrete highly corrosion resistant comprises 80 - 90 weight per cent of reactive silica, 0 - 10 weight per cent of low aluminate cement, 3 - 8 weight per cent of formaldehyde condensed sodium sulfonate, 3 - 8 weight per cent of lignosulfonate.

REFERENCES:
patent: 2410954 (1946-11-01), Sharp
patent: 3135617 (1964-06-01), Newell et al.
patent: 3880664 (1975-04-01), Schulze
patent: 3969567 (1976-07-01), Occleshaw et al.

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