METHOD FOR CEMENT GROUT VOLUME CONCENTRATION DETERMINATION IN SLURRY PULP DURING JET GROUTING Russian patent published in 2017 - IPC G01N33/38 G01N23/223 

FIELD: chemistry.

SUBSTANCE: method involves selection of test material samples and X-ray fluorescence method of determination of chemical element quantitative content in the selected samples. Prior to jet grouting, a chemical element is selected to be injected into the ground together with the cement grout during jet grouting, cement grout is prepared by mixing in water, and during cement grout preparation, the selected chemical element is introduced into the grout, a grout sample is taken, the grout is injected into the ground under pressure for building structure formation in the ground and slurry pulp extraction, during jet grouting, a sample of jet-grouting slurry is taken, X-ray fluorescence method is used to measure the weight concentration of chemical elements in samples and density of sample materials, volume concentration of the solution in the jet-grouting cement slurry is calculated.

EFFECT: opportunity for fast determination of solution volume concentration in the jet-grouting slurry with sufficient accuracy for monitoring, timely adjustment of the cementing process and improved quality of underground structures.

9 cl, 3 ex