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Nucleating agent, copper tailing autoclaved aerated concrete product, preparation method and application

A concrete product, autoclaved aerated technology, applied in the field of preparation, copper tailings autoclaved aerated concrete products, crystal nucleating agent, can solve the problems of large shrinkage, high bulk density, low compressive strength, etc., to reduce product shrinkage , Low dry density, and the effect of improving compressive strength

Inactive Publication Date: 2021-01-15
江西省建筑材料工业科学研究设计院
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the embodiments of the present invention is to provide a crystal nucleating agent to solve the low compressive strength of the products produced when using copper tailings as raw materials to prepare autoclaved aerated concrete blocks in the prior art proposed in the background art , high bulk density and large shrinkage

Method used

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  • Nucleating agent, copper tailing autoclaved aerated concrete product, preparation method and application
  • Nucleating agent, copper tailing autoclaved aerated concrete product, preparation method and application

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preparation example Construction

[0027] The embodiment of the present invention also provides a preparation method of the above-mentioned crystal nucleating agent, the preparation method of the described crystal nucleating agent comprises the following steps:

[0028] 1) Weighing (grinding) blast furnace slag, nano-calcium carbonate, fly ash, polycarboxylic acid (water reducer) and triterpene saponin in proportion, and mixing them uniformly to obtain a mixture;

[0029] 2) Weighing the acicular wollastonite powder and sodium bicarbonate in proportion, adding them to the mixture obtained in step 1), and mixing evenly to obtain the crystal nucleating agent.

[0030] Preferably, the preparation method of described crystal nucleus agent comprises the following steps:

[0031] 1) Weighing (grinding) blast furnace slag, nano-calcium carbonate, fly ash, polycarboxylic acid (water reducer) and triterpene saponin in proportion, and stirring with a mixer for 2-3 minutes to obtain a mixture;

[0032] 2) Weighing the ac...

Embodiment 1

[0045] A preparation method of a crystal nucleating agent, comprising the following steps:

[0046] Weigh (ground) 10 kg of blast furnace slag, 8 kg of nano-calcium carbonate, 12 kg of fly ash, 1 kg of polycarboxylic acid (water reducer), 0.01 kg of triterpene saponin, and stir for 2 minutes with a mixer to obtain a mixture;

[0047] 2) Weigh 25 kg of acicular wollastonite powder and 1 kg of natron, add them to the mixture obtained in step 1), and continue stirring for 2 minutes to obtain the crystal nucleating agent, which can be packaged and applied.

Embodiment 2

[0049] A preparation method of a crystal nucleating agent, comprising the following steps:

[0050] Weigh (grind) 30 kilograms of blast furnace slag, 22 kilograms of nano-calcium carbonate, 36 kilograms of fly ash, 5 kilograms of polycarboxylic acid (water reducer), 0.05 kilogram of triterpene saponin, and stir for 3 minutes with a mixer to obtain a mixture;

[0051] 2) Weigh 65 kg of acicular wollastonite powder and 6 kg of natron, add them to the mixture obtained in step 1), and continue stirring for 3 minutes to obtain the crystal nucleating agent, which can be packaged and applied.

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Abstract

The invention relates to the technical field of building materials, and particularly discloses a nucleating agent, a copper tailing autoclaved aerated concrete product, a preparation method and application. The nucleating agent comprises the following raw materials: blast furnace slag, nano calcium carbonate, fly ash, acicular wollastonite powder, polycarboxylic acid, triterpenoid saponin and sodium silicate. The nucleating agent can be used for preparing autoclaved aerated concrete blocks by utilizing the characteristics of early enhancement and tobermorite crystallization induction, and by generating enough tobermorite to be inserted into CSH gel, the compressive strength is effectively improved, the shrinkage of the product is reduced, the dry density is low, and the problems that in the prior art, when copper tailings are used as raw materials for preparing autoclaved aerated concrete blocks, produced products are low in compressive strength, high in volume weight and large in shrinkage are solved. The provided preparation method is simple, can be used for rapidly and efficiently preparing the nucleating agent, and has a wide market prospect.

Description

technical field [0001] The invention relates to the technical field of building materials, in particular to a crystal nucleating agent, a copper tailing autoclaved aerated concrete product, a preparation method and an application. Background technique [0002] With the continuous development of science and technology, people pay more and more attention to environmental issues. Among them, copper tailings (waste slag), also known as copper tailings, are composed of fine powder sand left after the ore has been crushed and selected. If it is not treated in time, it will easily cause environmental problems. [0003] Usually, except for a small amount of copper tailings used as filling materials for old mines, most of the copper tailings are disposed of by stacking, which not only takes up a lot of land, but also easily pollutes the ecological environment, and the heavy metal ions contained in it are easy to Seep down into groundwater and river water, endangering people's health...

Claims

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Application Information

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IPC IPC(8): C04B24/32C04B28/04
CPCC04B40/0039C04B28/04C04B18/141C04B14/28C04B18/08C04B14/043C04B22/062C04B24/06C04B24/32C04B22/064C04B22/143C04B18/12C04B14/06
Inventor 黄高明曾兴华吴炎平张苏伊韩文祥别安涛刘红霞
Owner 江西省建筑材料工业科学研究设计院
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