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Controllable clay and cement seepage-proof reinforcement paste

A reinforcement paste and clay technology, applied in the field of cement paste anti-seepage reinforcement materials, can solve the problems of difficult precise control of reaction time, toxicity of chemical grouting materials, poor durability, etc., to reduce the elastic modulus and cost of grouting materials Good irrigation performance and lower production cost

Inactive Publication Date: 2013-07-31
CHANGSHA UNIVERSITY OF SCIENCE AND TECHNOLOGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Among them, ordinary cement paste is made by adding admixtures such as fly ash to pure cement slurry to make it into a paste. Ordinary cement paste is easily washed out by water flow; quick-setting paste is added admixtures to pure cement slurry. Its setting time is sensitive to factors such as temperature, mixing uniformity, and mixing amount, and the reaction time is difficult to control accurately, and the price is relatively expensive; chemical grouting materials have certain toxicity, poor durability, and pollute the environment.

Method used

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  • Controllable clay and cement seepage-proof reinforcement paste
  • Controllable clay and cement seepage-proof reinforcement paste
  • Controllable clay and cement seepage-proof reinforcement paste

Examples

Experimental program
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Effect test

Embodiment 1

[0021] a kind of like image 3 The controllable clay cement anti-seepage reinforcement paste of the present invention is mainly prepared from clay puree, cement (P42.5 ordinary Portland cement is enough) and water, and the clay puree is mainly composed of high-quality clay (High-quality clay with low sand content) mixed with water. The controllable clay cement anti-seepage reinforcement slurry is added with modifier, and the amount of modifier (the amount of modifier is the mass of modifier accounts for The proportion of cement mass) is 2%, and the modifier is mainly composed of mineral additives (sodium metaaluminate), calcium sulfate and calcium-based bentonite with a mass ratio of a:b:c, a:b:c is selected from the following table Six groups of mass ratios in 1.

[0022] Table 1: The main material mass ratio of controllable clay cement anti-seepage reinforcement paste in Example 1

[0023] Numbering a:b:c (mineral additives: sulfate: bentonite) Clay pulp speci...

Embodiment 2

[0028] A controllable clay cement anti-seepage reinforcement paste of the present invention, which is mainly prepared from clay stock, cement (P42.5 ordinary Portland cement is enough) and water, and the clay stock is mainly composed of high-quality clay ( High-quality clay with low sand content) mixed with water, the controllable clay cement anti-seepage reinforcement paste is added with a modifier, the amount of the modifier is 1% to 3%, the modifier is mainly composed of mass The ratio is a:b:c mineral additives (sodium metaaluminate), calcium sulfate and calcium-based bentonite, and a:b:c = 5:(5~0):(0~5).

[0029] The specific gravity of clay protoplasm in this embodiment is 1.2~1.4 g / cm 3 The original slurry (can be adjusted according to actual engineering needs), the water-solid ratio of the controllable clay cement anti-seepage reinforcement slurry is (0.56-1.43): 1, and the water-cement ratio of the controllable clay cement anti-seepage reinforcement slurry Less than ...

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Abstract

The invention discloses controllable clay and cement seepage-proof reinforcement paste. The controllable clay and cement seepage-proof reinforcement paste is mainly prepared from clay raw stock, cement and water, wherein the clay raw stock is mainly obtained by stirring clay and water. A modifier is added in the controllable clay and cement seepage-proof reinforcement paste; the doping amount of the modifier is 1 to 3 percent; the modifier mainly comprises mineral additives, sulfate and bentonite in a mass ratio of a:b:c; and a:b:c is 5:(5-0):(0-5). The product has the advantages of high stability and water flow dilution resistance, controllable setting time, adjustable strength, high antiseepage performance, low cost, environment friendliness and the like.

Description

technical field [0001] The invention belongs to the field of geotechnical engineering foundation treatment grouting, in particular to a cement paste type anti-seepage reinforcement material mixed with clay. Background technique [0002] In the anti-seepage and reinforcement projects of soft and permeable rock and soil such as fully (strongly) weathered rock mass, loose soil layer, sandy gravel layer, and rock mass with densely developed joints and cracks, as well as the anti-seepage and plugging of strata with large leaks and high-velocity flowing water, Application of grout enables controlled grouting. At present, known pasty grouting materials include ordinary cement paste, quick-setting paste and chemical paste. Among them, ordinary cement paste is made by adding admixtures such as fly ash to pure cement slurry to make it into a paste. Ordinary cement paste is easily washed out by water flow; quick-setting paste is added admixtures to pure cement slurry. Its setting tim...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C04B28/04C04B22/14
Inventor 张贵金杨松林莫智铣胡荣宗盛松涛
Owner CHANGSHA UNIVERSITY OF SCIENCE AND TECHNOLOGY
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