Modified double-liquid paste injection material

Abstract

The invention discloses a modified double-liquid paste injection material and relates to soft stratum reinforcement of underground construction and anti-seepage water plugging paste injection. The modified double-liquid paste injection material comprises a liquid A and a liquid B, wherein the liquid A is sodium silicate which has a modus of 2.0-3.5 and a baume degree of 20-45Be'; the liquid B is modified cement slurry which consists of the following components in parts by weight: 500-900 parts of cement, 50-200 parts of zeolite powder, 50-300 parts of ore slag powder, 0-50 parts of phosphoricacid, 1-10 parts of a naphthalene water reducer and 700-1500 parts of water; when being used, the liquid A and the liquid B are uniformly mixed in a volume ratio of (0.5-1.5):1, and the modified double-liquid paste injection material is prepared. As a part of cement is replaced by the zeolite powder and the ore slag powder to react with the sodium silicate, the zeolite powder is of a micro porousstructure and is capable of improving the peaceability and the stability of the cement slurry, water energy adsorbed into pores of the zeolite powder can be released at a later hydration reaction stage, then a solid can be sufficiently hydrated, and the compactness and the strength can be improved.

Description

technical field [0001] The invention relates to the technical field of soft ground reinforcement and anti-seepage and water blocking grouting in underground engineering, in particular to a modified double-liquid grouting material. Background technique [0002] Grouting is to prepare a certain material into slurry, and use pressure feeding equipment to pour it into the formation or gap to make it diffuse, gel or solidify, so as to achieve the purpose of strengthening the formation or preventing seepage and plugging. During the construction of underground tunnels such as subways, if the geological conditions are poor, the groundwater is abundant, and the water level is high, emergencies such as mud gushing and water gushing, primary branch deformation and cracking are prone to occur, which poses a great safety risk in tunnel construction. The excavation surface is stable and does not collapse, and the soil needs to be reinforced by grouting and water blocking to reduce ground ...

AI Technical Summary

Problems solved by technology

However, there are still many deficiencies in the traditional water glass double-liquid grouting materials, such as unstable solid structure, poor durability, and poor corrosion resistance.

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