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Geopolymer member and preparation method thereof

A geopolymer and component technology, applied in the field of building materials, can solve the problems of shortening the preparation time, affecting the strength of the product, increasing the economic cost, etc., and achieving the effect of shortening the delivery time, improving the mechanical properties such as strength, and reducing the economic cost.

Active Publication Date: 2020-10-02
UNIV OF JINAN
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] Therefore, the technical problem to be solved in the present invention is to overcome the need to further shorten the preparation time of geopolymers in the prior art, increase the material strength by adding fibers or organic materials and increase the economic cost, the use of organic materials will cause environmental pollution, and The use of excessive moisture will form pores in the product and affect the strength of the product and other defects, thereby providing a geopolymer component and its preparation method

Method used

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  • Geopolymer member and preparation method thereof
  • Geopolymer member and preparation method thereof
  • Geopolymer member and preparation method thereof

Examples

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Effect test

Embodiment 1

[0054] The present embodiment provides a geopolymer member, and the raw materials are weighed in the following parts by weight: 58 kg of metakaolin (the molar ratio of silicon to aluminum is 1:1, and the purity is 95%), 4.5 kg of sodium silicate with a modulus of 2.3, hydrogen 1.5kg of sodium oxide, 10kg of water, 3kg of inorganic curing agent (sodium silicate with a modulus of 3.3), and 0.3kg of polycarboxylic acid-based water reducer. Then follow the steps below to prepare:

[0055] Mix and stir sodium silicate, sodium hydroxide and water according to parts by weight, and cool for 12 hours to obtain a liquid activator;

[0056] Pour metakaolin, inorganic curing agent, and additives into the mixing tank and stir for 5 minutes to mix evenly, then add the activator solution and stir to obtain a semi-dry-wet mixture;

[0057] Place the semi-dry and wet mixture mixed in the above steps into a steel mold (shaped as figure 2 Shown) for cloth processing;

[0058] The materials p...

Embodiment 2

[0063] The present embodiment provides a geopolymer member, and the raw materials are weighed in the following parts by weight: 60 kg of metakaolin (the molar ratio of silicon to aluminum is 1:1, and the purity is 95%), sodium silicate 4 with a modulus of 2.3, hydroxide Sodium 2, water 12kg, inorganic curing agent (sodium silicate with a modulus of 3.3) 3kg, polycarboxylate water reducer 0.2kg. Then follow the steps below to prepare:

[0064] Mix and stir sodium silicate, sodium hydroxide and water according to parts by weight, and cool for 12 hours to obtain a liquid activator;

[0065] Pour metakaolin, inorganic curing agent and additives into the mixing tank and stir for 5 minutes to mix evenly, then add the activator solution and stir to obtain a semi-dry-wet mixture;

[0066] Place the semi-dry and wet mixture mixed in the above steps into a steel mold (shaped as figure 2 Shown) for cloth processing;

[0067] The material processed in the above steps is pre-compacted ...

Embodiment 3

[0072] The present embodiment provides a geopolymer member, and the raw materials are weighed in the following parts by weight: 68 kg of metakaolin (the molar ratio of silicon to aluminum is 1:1, and the purity is 95%), and 4 kg of sodium silicate with a sodium silicate modulus of 2.3 , 4kg of sodium hydroxide, 15kg of water, 5kg of inorganic curing agent (sodium silicate with a modulus of 3.3), and 0.35kg of polycarboxylic acid-based water reducer. Then follow the steps below to prepare:

[0073] Mix and stir sodium silicate, sodium hydroxide and water according to parts by weight, and cool for 12 hours to obtain a liquid activator;

[0074] Pour metakaolin, inorganic curing agent and additives into the mixing tank and stir for 5 minutes to mix evenly, then add the activator solution and stir to obtain a semi-dry-wet mixture;

[0075] Place the semi-dry and wet mixture mixed in the above steps into a steel mold (shaped as figure 2 Shown) for cloth processing;

[0076] The...

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Abstract

The invention belongs to the technical field of building materials, and particularly relates to a geopolymer component and a preparation method thereof. The component is composed of 58-74 parts of a silicon-aluminum raw material, 4-12 parts of an excitant, 3-7 parts of an inorganic curing agent, 0.2-0.5 part of an additive, and 7-20 parts of water. According to the technical scheme, the water consumption is low, generation of pores in the product due to existence of excessive moisture is avoided, and the strength and other mechanical properties of the geopolymer are improved; reinforcing materials such as fibers, resin and polyvinyl alcohol do not need to be additionally added; the chemical activity of the raw materials is fully utilized; especially, an inorganic curing agent is used; allthe raw materials are matched and used in proportion; the geopolymer component with high polymerization degree, high compactness and high strength can be rapidly generated in situ through the coordination effect of all the components, the economic cost is effectively reduced, the delivery time is greatly shortened, no free formaldehyde is released, and the geopolymer component is more environmentally friendly, better in fireproof and high-temperature-resistant performance and wide in application prospect.

Description

technical field [0001] The invention belongs to the technical field of building materials, and in particular relates to a geopolymer component and a preparation method thereof. Background technique [0002] Geopolymer (Geopolymer) is one of the green cementitious materials that has been researched very actively in the world in recent years. It is a new type of inorganic polymer material obtained by chemical reaction at a relatively low temperature with clay, industrial waste residue or slag as the main raw material, alkali or acid as the activator, and appropriate process treatment. This material is newly developed in recent years, it is possible to replace cement in many occasions, and it is a new material with better performance than cement. Geopolymers have unique properties superior to ordinary Portland cement, such as high strength, fast hardening, and acid and alkali corrosion resistance. At the same time, they have the advantages of abundant materials, low prices, an...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B28/00B28B3/02C04B111/28
CPCC04B28/006B28B3/025C04B2111/28C04B2111/763C04B2201/52C04B22/00C04B2103/302Y02P40/10
Inventor 杜鹏马玉玮徐东宇周宗辉王金邦程新
Owner UNIV OF JINAN
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