Quick-setting early-strength grouting material

A technology of grouting materials and raw materials, which is applied in the direction of sustainable waste treatment, solid waste management, climate sustainability, etc., can solve the problems such as difficult control of setting time, achieve the goal of improving resistance to groundwater erosion, reducing production costs, and reducing the amount of addition Effect

Inactive Publication Date: 2016-05-11
JIAHUA SPECIAL CEMENT
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This patent mainly uses the principle of alkali excitation to stimulate the activity of mineral admixtures in an alkaline environment. The setting time is not easy to control, and there is a risk of alkali-aggregate reaction.

Method used

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  • Quick-setting early-strength grouting material

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Embodiment 1

[0021] A fast-setting early-strength grouting material, comprising the following raw materials in parts by weight: 75 parts of Portland cement clinker; 10 parts of slag; 5 parts of sulphoaluminate cement; 1 part of silica fume; 0.5 parts of bentonite; 0.05 parts of base cellulose ether; 0.25 parts of water reducing agent; 0.005 parts of lithium carbonate; 0.05 parts of defoamer.

Embodiment 2

[0023] A fast-setting early-strength grouting material, comprising the following raw materials in parts by weight: 78 parts of Portland cement clinker; 8 parts of slag; 8 parts of sulphoaluminate cement; 2 parts of silica fume; 1 part of bentonite; 0.1 part of base cellulose ether; 0.3 part of water reducing agent; 0.01 part of lithium carbonate; 0.15 part of defoamer.

[0024] In this embodiment, the specific surface area of ​​the slag is 400 kg / m3; the sulphoaluminate cement is sulphoaluminate cement with a strength grade of 42.5.

Embodiment 3

[0026] A fast-setting early-strength grouting material, comprising the following raw materials in parts by weight: 80 parts of Portland cement clinker; 6 parts of slag; 10 parts of sulphoaluminate cement; 3 parts of silica fume; 2 parts of bentonite; 0.15 parts of base cellulose ether; 0.35 parts of water reducing agent; 0.03 parts of lithium carbonate; 0.2 parts of defoamer.

[0027] In this embodiment, the specific surface area of ​​slag is 800kg / m3; the sulphoaluminate cement is the sulphoaluminate cement whose strength grade is 52.5; the specific surface area of ​​silica fume is 30000cm 2 / g; bentonite is sodium-based bentonite, its water absorption rate is greater than 300%, and the sieve residue of 80μm is less than 8%; the viscosity of hydroxyethyl cellulose ether is 50000mPa·s; The water rate is 25%.

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Abstract

The invention discloses a quick-setting early-strength grouting material, and belongs to the technical field of grouting materials. The quick-setting early-strength grouting material comprises the following raw materials in percentage by mass: 75 to 90 parts of potland clinker, 3 to 10 parts of mineral slag, 5 to 15 parts of sulphate aluminium cement, 1 to 5 parts of silica fume, 0.5 to 4 parts of bentonite, 0.05 to 0.2 part of hydroxyethyl cellulose, 0.25 to 0.5 part of water reducing agent, 0.005 to 0.1 part of lithium carbonate, and 0.05 to 0.5 part of defoaming agent. The grouting material disclosed by the invention is mainly applied to grouting leakage plugging of a rock-soil layer, and in particular to the grouting leakage plugging engineering of water burst at the positions of a dam foundation and the like, and has the advantages of short setting time, high early strength, high construction performance, and good plugging performance.

Description

technical field [0001] The invention relates to a fast-setting early-strength grouting material, which belongs to the technical field of grouting materials. Background technique [0002] The grouting material is for the purpose of improving the foundation, and plays the role of filling the cracks and pores of the formation in the foundation and consolidating it. It is a solid formed by grout after a certain chemical or physical reaction. During the grouting process, it changes from liquid phase to solid phase and then to stone body, and is used to fill the cracks or pores in the formation. [0003] During the construction of the dam foundation of the hydropower station, piping often occurs, and the water inflow is large, so the dam foundation needs to be blocked in time. The direct plugging effect of the commonly used cement slurry is not obvious, which is mainly because the cement solidification time is long, and the cement slurry is diluted by the water flow, which affect...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B28/06C04B18/14C04B14/10C04B111/70
CPCC04B28/06C04B2111/70C04B2201/50C04B7/02C04B18/141C04B18/146C04B14/104C04B24/383C04B2103/302C04B22/10C04B2103/50Y02W30/91
Inventor 林燕王田堂
Owner JIAHUA SPECIAL CEMENT
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