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Geopolymer injecting paste material and preparing method and application thereof

A grouting material, geopolymer technology, used in cement production, infrastructure engineering, construction, etc.

Active Publication Date: 2016-05-04
SHANDONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to solve the problem of engineering anti-seepage reinforcement often encountered in the field of civil engineering in the prior art, and propose a geopolymer grouting material and its preparation method and application

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] Zeolite powder and fly ash are added in a ratio of 1:5, and then the mass of clay added is 5% of the mass sum of zeolite powder and fly ash, the mass of activator NaOH is 10% of the above solid mass, and the accelerator hydrogen Calcium oxide is 1% of the total mass of the above-mentioned solids, and a geopolymer grouting slurry with a water-cement ratio of 1:1 is prepared. It was found that the viscosity was 18mPa·s, the initial setting time was 9h, the setting rate was 84%, and the 7-day compressive strength was 4.32MPa.

[0025] 50-80 parts of fly ash, 16-50 parts of zeolite powder, 4-10 parts of clay, 5-15 parts of alkaline activator, 0.5-2 parts of quick-setting agent, 3-8 parts of water glass, and the water-cement ratio is 0.75 -1.5.

Embodiment 2

[0027] Zeolite powder and fly ash are added in a ratio of 1:5, and then the mass of clay added is 10% of the mass sum of zeolite powder and fly ash, the mass of activator NaOH is 10% of the total mass of the above solids, and the accelerator Calcium hydroxide is 1% of the total mass of the above-mentioned solids, and a geopolymer grouting slurry with a water-cement ratio of 1:1 is prepared. It was found that the viscosity was 21mPa·s, the initial setting time was 7.5h, the setting rate was 90%, and the 7-day compressive strength was 3.51MPa.

Embodiment 3

[0029] Zeolite powder and fly ash are added in a ratio of 1:1, and then the mass of clay added is 15% of the sum of the mass of zeolite powder and fly ash, the mass of activator NaOH is 10% of the total mass of the above solids, and the accelerator Calcium hydroxide is 1% of the total mass of the above-mentioned solids, and a geopolymer grouting slurry with a water-cement ratio of 1:1 is prepared. It was found that the viscosity was 23mPa·s, the initial setting time was 6.2h, the setting rate was 95%, and the 7-day compressive strength was 1.42MPa.

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Abstract

The invention discloses a geopolymer injecting paste material and a preparing method and application thereof. The geopolymer injecting paste material is prepared from the components in proportion: 50-80 parts of coal ash, 16-50 parts of zeolite powder, 4-10 parts of clay, 5-15 parts of alkali excitant, 0.5-2 parts of accelerator, 3-8 parts of water glass and a water cement ratio is 0.75-1.5; the method comprises: (1) dissolving the alkali excitant in water to prepare an alkali excitant solution; (2) uniformly mixing the coal ash and the zeolite powder with other components to obtain a mixture; (3) mixing the alkali excitant solution with the mixture, and stirring to obtain the target geopolymer injecting paste material. The geopolymer binding material taking the coal ash, zeolite powder and clay as raw materials has the characteristics similar to but superior to those of cement, and can serve as an excellent injecting paste material, and has excellent effects on road foundation strengthening and antiseepage in engineering.

Description

technical field [0001] The invention belongs to the field of civil engineering, and in particular relates to a geopolymer grouting material and a preparation method and application thereof. technical background [0002] Grouting material is a material with filling and cementing properties. After being prepared into grout, it is injected into the cracks, pores or holes in the bottom layer by grouting equipment. After solidification and hardening, it serves the purpose of filling and reinforcement, and is widely used in roads, tunnels, water conservancy, etc. Anti-seepage and reinforcement during construction of other projects. Grouting materials can be divided into two categories: inorganic grouting materials and organic grouting materials. Among them, inorganic grouting materials are more widely used in grouting materials due to their wide source of raw materials, low cost, non-toxicity and simple construction technology. Pulp engineering. Most of the existing inorganic gr...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B7/26E02D3/12
CPCC04B7/243C04B12/005E02D3/12Y02P40/10
Inventor 崔新壮侯飞金青黄丹刘泽群汤维泽李莉楼俊杰张炯崔社强郑英杰
Owner SHANDONG UNIV
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