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Basalt fiber reinforced regenerated micro-powder geopolymer and preparation method thereof

A basalt fiber and geopolymer technology, applied in the field of materials science, can solve the problems of rising material prices and increasing the cost of preparing geopolymers, and achieve the effects of reducing prices, facilitating popularization and application, and achieving high toughness.

Active Publication Date: 2020-09-11
YANGZHOU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] In recent years, with the expansion of the utilization of fly ash, slag and other materials, the price of such materials has risen, which has increased the cost of preparing geopolymers.

Method used

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  • Basalt fiber reinforced regenerated micro-powder geopolymer and preparation method thereof
  • Basalt fiber reinforced regenerated micro-powder geopolymer and preparation method thereof

Examples

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preparation example Construction

[0031] The present invention proposes a method for preparing a basalt fiber-reinforced regenerated micropowder geopolymer, which includes:

[0032] 1) taking each reaction material component according to parts by weight;

[0033] 2) Put the regenerated micropowder, metakaolin and high-efficiency activator into a sealed bag and mix evenly, set aside;

[0034] 3) Mix the basalt fiber and fiber dispersant evenly, set aside;

[0035] 4) mix the alkali activator and deionized water in the reaction vessel evenly, and set aside;

[0036] 5) Add the raw materials obtained in step 2) and step 3) into the stirring pot, start the blender and add all the alkali activators into the stirring pot within 1 minute, stir for 3-5 minutes, and obtain the basalt fiber reinforced regenerated micro-powder geopolymer .

[0037] The method for preparing a basalt fiber-reinforced geopolymer provided by the embodiment of the present invention makes full use of large and cheap construction solid waste...

Embodiment 1

[0040] This embodiment provides a basalt fiber reinforced regenerated micropowder geopolymer, the preparation steps of which are as follows:

[0041] S101, material preparation: prepare 300 parts of recycled micropowder, 700 parts of metakaolin, 750 parts of water glass, 100 parts of sodium hydroxide, 7 parts of activator, 150 parts of deionized water, 5 parts of basalt fiber, and 3 parts of fiber dispersant. Among them, the specific surface area of ​​metakaolin is 600m 2 / kg, basalt fiber length 3mm.

[0042] S102. Prepare powder: mix and grind 300g of regenerated micropowder and 7g of activator to obtain a specific surface area of ​​900m 2 / kg, the regenerated micropowder with a particle size of 20 μm, and then mix it with 700g metakaolin evenly to obtain a powder.

[0043] S103. Prepare fiber: mix basalt fiber and fiber dispersant evenly.

[0044] S104. Preparation of an alkali activator: uniformly mix 750 g of water glass, 100 g of sodium hydroxide and 150 g of deionize...

Embodiment 2

[0047]This embodiment provides a basalt fiber reinforced regenerated micropowder geopolymer, the preparation steps of which are as follows:

[0048] S201. Preparation of materials: Prepare 300 parts of recycled micropowder, 700 parts of metakaolin, 750 parts of water glass, 100 parts of sodium hydroxide, 7 parts of activator, 150 parts of deionized water, 10 parts of basalt fiber, and 3 parts of fiber dispersant. Among them, the specific surface area of ​​metakaolin is 600m 2 / kg, basalt fiber length 3mm.

[0049] S202, powder preparation: 300g of regenerated micropowder and 7g of activator are mixed and ground to obtain a specific surface area of ​​900m 2 / kg, the regenerated micropowder with a particle size of 20 μm, and then mix it with 700g metakaolin evenly to obtain a powder.

[0050] S203. Prepare fiber: mix the basalt fiber and fiber dispersant evenly.

[0051] S204, preparing an alkali activator: uniformly mix 750g of water glass, 100g of sodium hydroxide and 150g ...

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Abstract

The invention relates to a basalt fiber reinforced regenerated micro-powder geopolymer and a preparation method thereof. The regenerated micro-powder comprises the following components in parts by weight: 100-500 parts of regenerated micro-powder, 500-900 parts of metakaolin, 700-1000 parts of an alkali activator, 5-10 parts of a high-efficiency activator, 3-18 parts of basalt fiber, 1-5 parts ofa fiber dispersing agent and 150-200 parts of deionized water. According to the invention, cement is replaced by building solid wastes, so that the resource cyclic utilization rate is improved, the environmental burden is reduced, the cost is reduced, and the resource consumption is reduced; in the invention, the basalt fiber reinforced regenerated micro-powder geopolymer is utilized to solve theproblems of poor toughness, high early shrinkage rate and high cracking tendency of the geopolymer, so that the geopolymer with high strength and high toughness is obtained, thereby being beneficial to popularization and application of the geopolymer in the engineering field of our country.

Description

technical field [0001] The invention relates to the field of material science, and in particular to a basalt fiber-reinforced regenerated micropowder geopolymer and a preparation method thereof. Background technique [0002] Geopolymer is a new type of green cementitious material. Compared with traditional cement-based materials, geopolymer raw materials have a wide range of sources, and the preparation process is simple, low energy consumption, and CO2. 2 Low emissions. Basalt fiber has excellent properties such as high strength, high modulus, high temperature resistance and low temperature resistance, acid and alkali resistance, oxidation resistance, radiation resistance, heat insulation and sound insulation, fire retardant, and good filterability. Due to the inherent weaknesses of geopolymers such as low tensile strength and high brittleness, adding basalt fibers can effectively improve the performance of geopolymers and prepare high-performance geopolymer materials. Thi...

Claims

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Application Information

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IPC IPC(8): C04B7/24C04B7/36
CPCC04B12/005C04B7/246C04B7/36Y02P40/10
Inventor 康爱红徐俊肖鹏吴正光李波寇长江吴帮伟娄可可
Owner YANGZHOU UNIV
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