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A geopolymer prepared from industrial waste residue and its preparation method

A technology of geopolymers and industrial waste, which is applied in the field of new building gelling materials - geopolymers, can solve the problems of complex preparation process and limited available quantity, and achieve simple production process, easy industrialization and green production Effect

Inactive Publication Date: 2016-09-28
AIR FORCE UNIV PLA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The building cementitious materials prepared by using industrial waste residues have the following problems: 1. The preparation process is complicated; 2. Portland cement is required in the preparation of raw materials, and industrial waste residues are only used as mineral admixtures, and the available amount is limited; 3. The used The fly ash is ground

Method used

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  • A geopolymer prepared from industrial waste residue and its preparation method
  • A geopolymer prepared from industrial waste residue and its preparation method
  • A geopolymer prepared from industrial waste residue and its preparation method

Examples

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Embodiment 1

[0024]This embodiment is a geopolymer prepared from industrial waste residue. The geopolymer includes 40.00% to 75.00% granular water-quenched blast furnace slag, 20.00% to 55.00% fly ash, 2.00% to 5.00% caustic soda, 1. 50% to 4.00% of soda ash and 0.25% to 0.60% of sodium tripolyphosphate; the stated proportions are percentages by weight. Wherein, both caustic soda and soda ash are stimulators, and their purity is more than or equal to 95%. The sodium tripolyphosphate is an additive, and its purity is more than or equal to 90%. In this embodiment, the weight ratio of granular water-quenched blast furnace slag is 42.27%, the weight ratio of fly ash is 50.72%, the weight ratio of caustic soda is 3.67%, and the weight ratio of soda ash is 2.84%. %, the weight ratio of sodium tripolyphosphate is 0.50%. The chemical compositions of the granular water-quenched blast furnace slag and fly ash used are shown in Table 1.

[0025] This embodiment also proposes a method for preparin...

Embodiment 2

[0032] This embodiment is a geopolymer prepared from industrial waste residue. The geopolymer includes 40.00% to 75.00% granular water-quenched blast furnace slag, 20.00% to 55.00% fly ash, 2.00% to 5.00% caustic soda, 1. 50% to 4.00% of soda ash and 0.25% to 0.60% of sodium tripolyphosphate; the stated proportions are percentages by weight. Wherein, both caustic soda and soda ash are stimulators, and their purity is more than or equal to 95%. The sodium tripolyphosphate is an additive, and its purity is more than or equal to 90%. In this embodiment, the weight ratio of granular water-quenched blast furnace slag is 58.73%, the weight ratio of fly ash is 35.24%, the weight ratio of caustic soda is 3.19%, and the weight ratio of soda ash is 2.45%. %, the weight ratio of sodium tripolyphosphate is 0.39%. The chemical compositions of the granular water-quenched blast furnace slag and fly ash used are shown in Table 1. In this example, the chemical compositions of the granular ...

Embodiment 3

[0040] This embodiment is a geopolymer prepared from industrial waste residue. The geopolymer includes 40.00%-75.00% granular water-quenched blast furnace slag, 20.00%-55.00% fly ash, 2.00%-5.00% caustic soda, 1. 50% to 4.00% of soda ash and 0.25% to 0.60% of sodium tripolyphosphate; the stated proportions are percentages by weight. Wherein, both caustic soda and soda ash are stimulators, and their purity is more than or equal to 95%. The sodium tripolyphosphate is an additive, and its purity is more than or equal to 90%. In this embodiment, the weight ratio of granular water-quenched blast furnace slag is 73.04%, the weight ratio of fly ash is 21.91%, the weight ratio of caustic soda is 2.77%, and the weight ratio of soda ash is 1.98% %, the weight ratio of sodium tripolyphosphate is 0.30%. The chemical compositions of the granular water-quenched blast furnace slag and fly ash used are shown in Table 1.

[0041] This embodiment also proposes a method for preparing the geo...

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Abstract

The invention relates to a geopolymer prepared from industrial waste residue and its preparation method. The geopolymer comprises, by weight: 40.00%-75.00% of granular water-quenched blast furnace slag, 20.00%-55.00% of fly ash, 2.00%-5.00% of caustic soda, 1.50%-4.00% of soda ash and 0.25%-0.60% of sodium tripolyphosphate. According to the invention, fly ash and granular water-quenched blast furnace slag are utilized to prepare a mixture of fly ash, granular water-quenched blast furnace slag and sodium tripolyphosphate, and then a compound alkali activator is added, thus obtaining the geopolymer. The geopolymer provided by the invention basically all uses industrial waste residue, has the characteristics of high performance cost ratio, simple production process and easy realization of industrialization, and can meet the technical requirements of the national standard for ordinary portland cement with strength grades of 32.5, 42.5 and 52.5. Experiments show that, the geopolymer involved in the invention has good ductility, excellent interface adhesion and excellent anti-permeability performance.

Description

technical field [0001] The invention relates to a new type of building gelling material-geopolymer, in particular to the preparation and industrial production of a geopolymer with industrial waste residue as the main raw material, and belongs to the fields of industrial solid waste utilization and green gelling materials. Background technique [0002] In today's economic development system, on the one hand, for a long time, China's economic development model has been a resource-consuming model, which has resulted in a large amount of industrial waste, of which fly ash and slag account for the vast majority. With the development of the national economy With rapid development, the output of industrial waste residues has increased year by year. In 1999, it was about 780 million tons, in 2004 it was about 1.2 billion tons, and by 2009 it had reached 1.8 billion tons. The way out is: storage, disposal and comprehensive utilization, and most of them rarely carry out harmless dispo...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C04B7/26
CPCY02P40/10
Inventor 许金余罗鑫白二雷李为民高志刚苏灏扬任韦波刘石范飞林战策李志武
Owner AIR FORCE UNIV PLA