Cement slurries, unaffected by salts of magnesium, for cementing

Details Cement slurries, unaffected by salts of magnesium, for cementing Cement slurries, unaffected by salts of magnesium, for cementing

1986-06-04

1988-03-29

Capella, Steven

Compositions: coating or plastic

Coating or plastic compositions

Metal-depositing composition or substrate-sensitizing...

106314, 166293, C04B 2216

Patent

active

047341343

ABSTRACT:
The slurries according to the invention contain: >18% NaCl; Na silicate and an agent of compatibility with magnesium consisting of H.sub.3 PO.sub.4 and HEDP diphosphonate.
Thickening time is not affected by the presence or absence of salts of magnesium, up to 30% of bischofite equivalents. The rheology of the slurry and the compressive strength of the cement are also practically unaffected by magnesium contamination or the lack thereof.

REFERENCES:
patent: 3654151 (1972-04-01), King et al.
patent: 3657134 (1972-04-01), King et al.
patent: 3794506 (1974-02-01), Schmidt et al.
patent: 4225361 (1980-09-01), Joseph
Chemical Abstracts, 98:58912p, (1983); K. H. Arens et al.

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