A kind of high-strength and high-toughness geopolymer material and preparation method thereof

A geopolymer, high-strength and high-toughness technology, used in cement production and other directions, can solve the problems of limited application and development, easy cracking, large shrinkage, etc., and achieve excellent mechanical strength, small early shrinkage, and improved toughness and strength.

Active Publication Date: 2021-02-19
ZHEJIANG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Due to the problems of large early shrinkage, easy cracking, and strong brittleness of geopolymer materials, its application and development are limited. It is urgent to develop a new type of geopolymer material with small early shrinkage, toughness and strength. key issues

Method used

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  • A kind of high-strength and high-toughness geopolymer material and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021]1) Mix and grind 200g metakaolin, 150g fly ash, 50g red mud, 40g slag, 40g silica fume and 20g Portland cement in proportion to obtain silicoaluminous mineral raw materials;

[0022]2) Mix 20g of condensed phosphate, 20g of nano silica, 20g of nano alumina, and 10g of zeolite in proportion to mix, stir and grind to obtain a nano-level high-efficiency modifier;

[0023]3) Put 2g of super absorbent resin into 100g of deionized water and let stand for 10 minutes to obtain a pre-absorbent super absorbent resin:

[0024]4) Pour 50g of sodium hydroxide into 600g of liquid sodium silicate in proportion, stir evenly, cool and stand at room temperature for 24 hours to obtain an alkali stimulant;

[0025]5) Mix 1g 5mm long and short cut carbon fibers, 1g 5mm long polypropylene fibers, 1g 5mm long and short cut basalt fibers, 3g calcium lignosulfonate, 1g sodium lauryl sulfate and the alkali stimulant obtained in step 4) , 50Hz ultrasonic dispersion for 60 minutes to form a uniform mixed fiber dispe...

Embodiment 2

[0028]1) Mix and grind 300g metakaolin, 200g fly ash, 50g red mud, 50g slag, 60g silica fume and 40g Portland cement in proportion to obtain silicoaluminous mineral raw materials;

[0029]2) Mix 50g condensed phosphate, 40g nano-silica, 40g nano-alumina, and 20g zeolite in proportion to mix, stir and grind to obtain a nano-level high-efficiency modifier;

[0030]3) Put 3g of super absorbent resin into 150g of deionized water and let stand for 15 minutes to obtain a pre-absorbent super absorbent resin:

[0031]4) Pour 130g of sodium hydroxide into 650g of liquid sodium silicate in proportion, stir evenly, cool and stand at room temperature for 24 hours to obtain an alkali stimulant;

[0032]5) Mix 3g 5mm long and short cut carbon fiber, 2g 5mm long polypropylene fiber, 1g 5mm long and short cut basalt fiber, 5g calcium lignosulfonate, 5g sodium lauryl sulfate and the alkali stimulant obtained in step 4) , 50Hz ultrasonic dispersion for 60 minutes to form a uniform mixed fiber dispersion alkali e...

Embodiment 3

[0035]1) Mix, stir and grind 250g metakaolin, 180g fly ash, 70g red mud, 50g slag, 50g silica fume and 30g Portland cement in proportion to obtain silicoaluminous mineral raw materials;

[0036]2) Mix 35g condensed phosphate, 30g nano-silica, 30g nano-alumina, and 15g zeolite in proportions to obtain nano-level high-efficiency modifier;

[0037]3) Put 4g of super absorbent resin into 150g of deionized water and let stand for 20 minutes to obtain a pre-absorbent super absorbent resin:

[0038]4) Pour 100g of sodium hydroxide into 650g of liquid sodium silicate in proportion, stir evenly, cool and stand for 24 hours at room temperature to obtain an alkali stimulant;

[0039]5) Combine 2g 5mm long and short cut carbon fiber, 1.5g 5mm long polypropylene fiber, 1g 5mm long and short cut basalt fiber, 3g calcium lignosulfonate, 3g sodium lauryl sulfate and the alkali stimulant obtained in step 4) Mix, 50Hz ultrasonic dispersion for 60 minutes to form a homogeneous mixed fiber dispersion alkali excita...

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Abstract

The invention discloses a high-strength and high-toughness geopolymer material. The high-strength and high-toughness geopolymer material comprises, by weight, 500-700 parts of silicon-aluminum mineralraw materials, 600-800 parts of an alkali activator, 70-150 parts of a nanoscale efficient modifier, 2-5 parts of super absorbent resin, 2-6 parts of a hybrid fiber, 4-10 parts of a surfactant, 700-1000 parts of fine aggregates and 100-150 parts of deionized water, the silicon-aluminum mineral raw materials comprise 200-300 parts of metakaolin, 150-200 parts of fly ash, 50-100 parts of red mud, 40-60 parts of mineral slag, 40-60 parts of silica fume and 20-40 parts of Portland cement, and the nanoscale efficient modifier comprises 20-50 parts of condensed phosphate, 20-40 parts of nano-silica, 20-40 parts of nano-alumina and 10-20 parts of zeolite. The invention further discloses a preparation method of the high-strength and high-toughness geopolymer material. The problems of large earlyself-shrinkage and easy cracking of the geopolymer are solved, and the obtained geopolymer has strong toughness and high strength.

Description

Technical field[0001]The invention belongs to the field of building materials, and particularly relates to a high-strength and high-toughness polymer material and a preparation method thereof.Background technique[0002]Geopolymer material is a new type of material with a special inorganic polycondensation three-dimensional oxide network structure. This material uses minerals rich in silicon and aluminum as raw materials, and is formed by alkali-induced reaction with liquid sodium silicate, sodium hydroxide and other solutions. , Geopolymer materials have more excellent properties than traditional silicate materials, including: fast hardening and early strength, good acid and alkali resistance, fire resistance, high temperature resistance, and high efficiency of solid heavy metal ions. In addition, the raw materials of geopolymers mostly come from industrial wastes such as fly ash, blast furnace slag, and mine waste. The carbon emissions and energy consumption in the production proces...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C04B28/04C04B12/00
CPCC04B28/04C04B2201/50C04B2201/52C04B12/005C04B14/106C04B18/08C04B18/0409C04B18/141C04B18/146C04B22/16C04B14/062C04B14/303C04B14/047C04B24/2641C04B12/04C04B22/062C04B14/386C04B16/0633C04B14/4656C04B24/18C04B24/16C04B14/22C04B14/06Y02P40/10
Inventor 闫东明刘毅张亚军陈士堃
Owner ZHEJIANG UNIV
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