Double-liquid process grouting material and grouting process using grouting material

Abstract

The invention discloses a double-liquid process grouting material and a grouting process of the grouting material. The grouting material consists of cement paste and an additive solution, wherein the additive is prepared by mixing 0.38 parts by weight of sodium metasilicate, 0.12 parts by weight of lithium poatassium and 0.5 parts by weight of calcium chloride; and the grouting process comprises respectively preparing paste materials and instantly mixing and grouting via a special double-liquid grouting paste plug. The grouting material disclosed by the invention satisfies the requirement on dam curtain grouting in regions with high cold, low temperature and large temperature difference day and night; the processes of adding complex components are simplified due to the adoption of the processes of randomly mixing, instantly pouring and grouting; and the additive is mixed with cement paste liquid in a hole through double-liquid grouting, so that the conflict between the pumping time and the setting time of the paste liquid is solved. Due to the preparation method, not only the diffusion of the cement paste liquid is effectively controlled and the re-grouting time is reduced, but also the problem of big control difficulty in the setting time of the paste liquid is solved, so that the investment is effectively reduced, the grouting period is shortened, and the grouting quality conforms to the engineering quality requirement.

Description

technical field [0001] The invention belongs to the technical field of reinforcement and anti-seepage of building foundations, in particular to the technical field of grouting reinforcement and anti-seepage of geological foundations of water conservancy and hydropower dams, and in particular to a construction grouting material for a hydropower dam and a grouting process thereof. Background technique [0002] Existing water conservancy and hydropower construction often needs to be carried out in high-altitude areas. The construction of dam reinforcement and anti-seepage is often due to factors such as high cold, low ambient temperature in winter, large temperature difference between day and night, and long slurry condensation time. , which seriously affects the construction progress, especially the geological rock mass in the curtain grouting area often develops wide and through cracks, and the grouting reinforcement and anti-seepage construction consumes a lot of grout and ca...

AI Technical Summary

Problems solved by technology

[0003] The existing grouting materials have a long setting time and a wide range of grout diffusion, which is not suitable for use in high-altitude areas. There are also methods to speed up setting by adding coagulants, but the composition is complex, there is no controllable method for adding, and the setting time is difficult to control. Short time, blockage of grouting pipeline and other problems

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