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

FIELD: measuring equipment.

SUBSTANCE: when the method is carried out, a sample of the test material is drawn, before the jet grouting, chemical elements are selected for pumping them into the soil together with the cement slurry during jet grouting from the condition that the weight content of each of them does not exceed 0.1% in the soil and possibility of its quantitative determination by X-ray fluorescent method, the cement slurry is prepared by mixing the cement in water and during preparation of the cement slurry, two or more chemical elements are introduced, measurement of the weight concentration of each chemical element in the samples and the density of the sample materials are performed by the X-ray fluorescent method, the volume concentration of the cement slurry in the soil-cement pulp is determined by each chemical element, and arithmetic mean value of volume concentrations determined by each element is taken as a result. At least one chemical element or substance containing this element is in a different aggregate state than the rest.

EFFECT: improved accuracy of determination.

2 cl, 1 ex