Geopolymer gel material for rush repairs and rush constructions

A technology of geopolymer and cementitious materials, applied in the field of geopolymer cementitious materials, can solve the complex ratio of cementitious materials and functional additives, no geopolymer cementitious materials, and extremely high requirements for storage environment, etc. problems, to achieve the effect of adjustable setting time, controllable setting time and easy construction

Active Publication Date: 2010-01-20
深圳市航天新材科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Double-fast cement has the characteristics of fast setting and early strength, but there are still several major disadvantages at present. One is that a large amount of heat is released during the condensation process, and it is easy to cause cracks during large-scale construction, and the adhesion to the original matrix is ​​not strong, and it is easy to Second, the price is high, the storage time is short, and there are extremely high requirements for the storage environment; the third is that Shuangkuai cement has extremely high requirements for engineering construction, and the ratio of cementitious materials and functional additives is very complicated. , often fail to achieve the purpose of quick repair
Fourth, cement production is a high-energy-consuming and high-polluting industry, which does not conform to the national advocacy of building a sustainable energy-saving society
[0006] Geopolymers have achieved good development in my country in recent years, but there are no reports on geopolymer cementitious materials with fast setting and fast hardening characteristics for emergency repair and construction projects

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] The blast furnace slag is 98%. After drying, add 1% gypsum and 1% grinding aid to grind together to obtain slag powder. The surface area of ​​the final slag powder is 420m 2 / Kg, the average particle size is 16.04 μm. The weight percent of each component in the composite activator is: SiO 2 Accounted for 62%, Na 2 O accounts for 37%, CaO accounts for 0.6%, SO 3 0.4%. Get 83 parts by weight of slag powder and 17 parts by weight of composite activator to prepare geopolymer gelling material for emergency repair and emergency construction, wherein the method of adding the composite activator is: dissolve in stirring water to form a 40wt% concentration solution, and then mix with Slag powder mixing. According to GB / T1346-2001, the water consumption for standard consistency (the water here refers to the sum of compound activator and stirring water) is 49%, the initial setting time is 20 minutes, the final setting is 40 minutes, and the stability is qualified. According ...

Embodiment 2

[0028] 57% of blast furnace slag, 40% of fly ash, 2% of gypsum, and 1% of grinding aid are used as the slag material; SiO is used as the composite activator 2 35%, K 2O65%, take 84 parts by weight of slag and 16 parts by weight of composite activator and grind together to obtain geopolymer cementitious material for rush repair and rush construction. The specific surface area of ​​the final gelled material is 460m 2 / Kg, the average particle size is 14.04μm. According to GB / T1346-2001, the water consumption for standard consistency (the water here refers to the sum of compound activator and stirring water) is 42%, the initial setting time is 13 minutes, the final setting is 30 minutes, and the stability is qualified. According to GB / T17671-1999, the mortar strength test was carried out on this material. No wet curing was carried out during the test. The test environment temperature was 20-25°C, the 4h flexural strength was 3.5-4.0MPa, and the compressive strength was 25.0-29...

Embodiment 3

[0030] 60% of blast furnace slag, 25% of steel slag and 13% of fly ash are dried and then added with 1% of gypsum and 1% of grinding aid to grind together to obtain slag powder. The surface area of ​​the final slag powder is 460m 2 / Kg, the average particle size is 14.04μm. The weight percent of each component in the composite activator is: SiO 2 59%, K 2 O accounted for 21%, Na 2 O accounts for 19%, CaO accounts for 0.1%, SO 3 Accounted for 0.9%. Get 87 parts by weight of slag powder and 13 parts by weight of composite activator to prepare geopolymer cementitious material for emergency repair and emergency construction, wherein the method of adding the composite activator is: dissolve in stirring water to form a 40wt% concentration solution, and then mix with Slag powder mixing. According to GB / T1346-2001, the standard consistency water consumption (the water here refers to the sum of compound activator and stirring water) is 45%, the initial setting time is 15 minutes,...

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Abstract

The invention provides a geopolymer gel material for rush repairs and rush constructions, which is prepared by adding water to 13-17 percent by weight of exciting agent and 82-87 percent by weight of slag containing aluminosilicate. The slag comprises one or the combination of more of blast furnace slag, steel slag, coal ash and coal gangue, and the exciting agent comprises the following components in percentage by weight: 35-75 percent of SiO2, 0-55 percent of Na2O, 0-65 percent of K2O, 0-1 percent of CaO and 0-1 percent of SO3. The geopolymer gel material which has the characteristic of quick setting and hardening is prepared by using the industrial waste slag as a main raw material and matching the exciting agent, and the geopolymer gel material has excellent mechanical property and controllable setting time and can replace gel materials such as fast setting and hardening cement, and the like in the processes of rush repairs and rush constructions. The industrial solid wastes such as the blast furnace slag, the steel slag, the coal ash, the coal gangue, and the like containing the aluminosilicate series are used as main raw materials, metakaolin is not added and the raw materials do not need to be calcined, thus the invention has low energy consumption, less pollution, simple process, low cost, environmental protection and energy saving.

Description

【Technical field】 [0001] The invention relates to building materials, in particular to a geological polymer cementitious material with the characteristics of quick setting and quick hardening by using industrial waste residue. 【Background technique】 [0002] At present, the materials used for emergency repair and construction of cement concrete projects mainly include organic materials and inorganic materials. Among them, organic materials include high molecular polymers such as epoxy resin and methyl methacrylate, which are mainly suitable for repairing cracks in concrete components such as bridges, docks, houses, and dams. It is not suitable for large-scale rush repair and rush construction projects, such as airport runways, highways and other large-scale rush repair and rush construction operations. Another type of inorganic material is mainly double-fast cement, including sulphoaluminate, phosphate and fluoroaluminate cement. Double-fast cement has the characteristics ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B7/14C04B7/147C04B7/26
CPCC04B20/026C04B2111/0075C04B28/006C04B2111/00215Y02P40/10Y02W30/91C04B18/06C04B18/08C04B18/141C04B18/142C04B22/143C04B2103/10C04B2103/52
Inventor 曹海琳李国学翁履谦
Owner 深圳市航天新材科技有限公司
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