Cement slurries, unaffected by salts of magnesium, for...

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

E - Fixed Constructions

21

B

31/28

E21B 33/14 (2006.01) C04B 24/00 (2006.01) C04B 28/02 (2006.01)

Patent

CA 1272374

ABSTRACT The slurries according to the invention contain: >18% NaCl; Na silicate and an agent of compatibility with magnesium consisting of H3PO4 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.

511086

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