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Modified double-liquid paste injection material

A two-liquid grouting and modification technology, which is applied in the field of soft ground reinforcement and anti-seepage water plugging grouting in underground engineering, can solve the problems of poor durability, poor corrosion resistance, and unstable structure, and achieve good durability and improved compactness. degree and strength, porosity reduction effect

Inactive Publication Date: 2018-11-20
建发合诚工程咨询股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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.

Method used

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  • Modified double-liquid paste injection material
  • Modified double-liquid paste injection material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1～6

[0016] A liquid preparation: choose the required concentration of water glass solution. Preparation of liquid B: Measure according to the required parts by mass, first add phosphoric acid, naphthalene-based water reducer, zeolite powder and slag powder to the water, stir well, then add cement, continue stirring evenly. Mix liquid A and liquid B uniformly according to the required volume ratio to obtain the finished grouting material. The distribution ratio of each group in Examples 1-6 is shown in Table 1.

[0017] Table 1 The distribution ratio of each component of the modified two-liquid grouting material

[0018]

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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 ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B28/26C04B111/70
CPCC04B28/26C04B2111/70C04B2201/50C04B7/02C04B14/047C04B18/141C04B22/165C04B2103/302
Inventor 孟龑程棋锋陈天培刘德全康明旭黄从增陈茜江子龙陈培栋林毅郑万皮湘榕宫小斌杨文浩吴晚霞黄乙纯
Owner 建发合诚工程咨询股份有限公司
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