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

C - Chemistry, Metallurgy

04

B

261/66, 261/85

C04B 7/32 (2006.01) C04B 14/06 (2006.01)

Patent

CA 1088110

PROCESS FOR MANUFACTURING CONCRETE OF HIGH CORROSION RESISTANCE. Abstract of the Disclosure. Concrete having high resistance to corrosion is prepared by using low aluminate (C3A) 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.

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