Foamed geopolymer and preparation method and application thereof

A geopolymer and foam technology, used in applications, other household appliances, household appliances, etc., can solve the problems of unsatisfactory crack resistance and waterproof performance, short service life, etc., and achieve excellent durability, excellent waterproof performance, and crack resistance. good effect

Active Publication Date: 2018-12-11
WUHAN POLYTECHNIC UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the anti-cracking and waterproof properties of foam geopolymer materials are far fr

Method used

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  • Foamed geopolymer and preparation method and application thereof

Examples

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Comparison scheme
Effect test

Embodiment 1

[0043] This embodiment provides a foam geopolymer for tunnel composite lining. The preparation method includes: pour 2 parts by weight of paraffin wax emulsion and 0.5 parts by weight of absolute ethanol into a mixer, stir at a slow speed for 1 min; then pour 39 parts by weight of metakaolin, 2 parts by weight of fly ash, 0.5 parts by weight of modified sisal fiber and 45 parts by weight of sodium water glass, stirred at a slow speed for 6 minutes; then added 7 parts by weight of water, stirred at a slow speed for 3 minutes ; Then add 0.5 parts by weight of foam stabilizer and 3.5 parts by weight of hydrogen peroxide with a concentration of 30%, and stir at a slow speed for 2 minutes. Then stir rapidly for 3 minutes, pour, vibrate, and cure for 28 days under standard curing conditions to obtain the foam geopolymer.

Embodiment 2

[0045] This embodiment provides a foam geopolymer for tunnel composite lining. The preparation method includes: pouring 1.5 parts by weight of paraffin wax emulsion and 0.4 parts by weight of absolute ethanol into a mixer, stirring at a slow speed for 1 min; then pouring 36 parts by weight of metakaolin, 1.5 parts by weight of fly ash, 0.6 parts by weight of modified sisal fiber and 47 parts by weight of sodium water glass, stirred at a slow speed for 6 minutes; then added 7 parts by weight of water, stirred at a slow speed for 3 minutes ; Then add 0.4 parts by weight of foam stabilizer and 4 parts by weight of 30% hydrogen peroxide, and stir at a slow speed for 2 minutes. Then stir rapidly for 3 minutes, pour, vibrate, and cure for 28 days under standard curing conditions to obtain the foam geopolymer.

Embodiment 3

[0047] This embodiment provides a foamed geopolymer for tunnel composite lining. The preparation method includes: pouring 1 part by weight of paraffin wax emulsion and 0.3 parts by weight of absolute ethanol into a mixer, stirring at a slow speed for 1 min; then pouring 30 parts by weight of metakaolin, 1 part by weight of fly ash, 0.8 parts by weight of modified sisal fiber and 50 parts by weight of sodium water glass, stirred at a slow speed for 6 minutes; then added 10 parts by weight of water, stirred at a slow speed for 3 minutes ; Then add 0.3 parts by weight of foam stabilizer and 5 parts by weight of 30% hydrogen peroxide, and stir at a slow speed for 2 minutes. Then stir rapidly for 3 minutes, pour, vibrate, and cure for 28 days under standard curing conditions to obtain the foam geopolymer.

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Abstract

The invention discloses a foamed geopolymer and a preparation method and application thereof. The foamed geopolymer is prepared from the following ingredients in parts by weight: 30-50 parts of metakaolin, 40-50 parts of an alkali-activator, 1-4 parts of coal ash, 2-5 parts of a foaming agent, 0.3-0.7 part of a foam stabilizer, 0.3-0.8 part of modified sisal fiber, 1-4 parts of paraffin emulsion,5-10 parts of water and 0.3-0.7 part of absolute ethyl alcohol. Compared with a traditional anti-permeability waterproof cement base material and a cement base protection material, the foamed geopolymer has the good material crack resistance, excellent waterproof performance and the outstanding endurance quality, good using performance can be maintained for a long time, and the foamed geopolymer has the properties of acid resistance, alkaline corrosion resistance, freeze thawing resistance and carbonization resistance, and can be widely applied to the field of basic engineering such as tunnelcomposite linings.

Description

technical field [0001] The invention belongs to the technical field of geopolymer-based materials, and more specifically relates to a foam geopolymer and its preparation method and application. Background technique [0002] Geopolymer is a kind of AlO 4 and SiO 4 Inorganic polymers composed of tetrahedral structural units in a three-dimensional network structure belong to non-metallic materials and are used in building materials, high-strength materials, solid nuclear solid waste materials, sealing materials, and high-temperature resistant materials. [0003] Foam geopolymer is a new type of inorganic energy-saving and environmentally friendly material, which has the advantages of fire resistance, non-toxicity, heat preservation and heat insulation. With the vigorous development of the domestic construction industry, there is an urgent need to increase the service life of foam geopolymer products in order to reduce the construction and maintenance costs of the construction...

Claims

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Application Information

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IPC IPC(8): C04B28/00C04B7/00C04B38/02C04B111/40
CPCC04B7/00C04B28/006C04B38/02C04B2111/40C04B18/08C04B2103/48C04B18/248C04B24/36C04B24/026C04B22/04C04B22/068C04B12/005Y02P40/10
Inventor 刘杰胜李发平张荣堂董莪龚晓强伦云霞张同同朱娇
Owner WUHAN POLYTECHNIC UNIVERSITY
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