PROCEDURE FOR THE ADMIXTURE OF SILCON OXIDE TO A HYDRAULIC CEMENT SLURRY

摘要

The invention relates to a procedure for the admixture of silicon oxide to a hydraulic cement slurry, particularly for well cementing, and is characterized by amorphus silica with particles smaller than 1 micro-metre being mixed with water to a liquid micro-silica, silica flour with particles from 2 to 200 micro-metres being mixed in said liquid micro-silica and the thereby obtained silica mixture being added to cement slurry directly in a mixing tank. In addition the invention relates to a hydraulic cement slurry produced according to the procedure.