Device and method for testing permeation flowing property of geopolymer slurry

Abstract

The invention discloses a device and method for testing the permeation flowing property of geopolymer slurry. The testing device is composed of a slurry storage pipe, a seepage pipe and a measuring cup, the geopolymer slurry seeps through the seepage pipe from the slurry storage pipe, the original volume of the geopolymer slurry is ensured through the slurry storage pipe, the seepage pipe is filled with a filler to simulate a seepage environment of the geopolymer slurry, the slurry storage pipe communicates with the seepage pipe through a connecting pipe, and the geopolymer slurry flowing property difference caused by different materials, mating ratios, admixtures and the like can be tested through the slurry storage pipe and the seepage pipe. By adopting the mass loss ratio r and the seepage speed v obtained through the device and the method, the permeation flowing property of the geopolymer slurry in the gravel filler can be accurately evaluated, the testing device is simple and easyto operate and suitable for being widely applied to determination and evaluation of the permeation flowing property of the geopolymer slurry, and the geopolymer slurry is applied and promoted in permeation grouting engineering advantageously.

Description

technical field [0001] The invention belongs to the innovation field of grouting material test equipment, and in particular relates to a test device and method for seepage flow performance of geopolymer slurry. Background technique [0002] Infiltration grouting, as one of pressure grouting methods, uses lower grouting pressure to infiltrate rock formations or soils without causing structural damage to the injected body. Since grouting is carried out in a permeable manner, the fluidity and permeability of the grouting material are required to be excellent. At present, there is no special test device and method for seepage flow performance of infiltration grouting materials, and only the concept of good fluidity means good permeability is used to evaluate the flow performance of grout materials. Most fluidity tests usually refer to the MarsH measuring tube fluidity test method (GB / T 0505-2005 "Test method for fluidity of cement paste (inverted cone method)"), but due to the ...

AI Technical Summary

Problems solved by technology

Most fluidity tests usually refer to the MarsH measuring tube fluidity test method (GB / T 0505-2005 "Cement slurry fluidity test method (inverted cone method)"), but due to the fluidity and particle size of different polymer slurries There are large differences in diameter and other aspects, resulting in great differences in the effect of grouting with the same fluidity in infiltration grouting

The flow time of the conventional inverted cone method can only be used to investigate its flow performance, and cannot be used to evaluate the seepage flow performance of geopolymer grout in the injected body. At present, there are no test methods and methods for the seepage flow performance of geopolymer grouting materials. Corresponding indicators

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