Geopolymeric material and preparation method thereof

A geopolymer cement and hydraulic technology, applied in the field of road engineering materials, can solve the problem of single raw material of geopolymer cement, achieve good economic benefits, improve early strength, and reduce impurities.

Active Publication Date: 2017-03-29
CHANGAN UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] In view of the deficiencies in the prior art, the purpose of the present invention is to provide a geopolymer cement material and its preparation method, to solve the problem of single raw materials of geopolymer cement in my country, and to promote the popularization and application of energy-saving and environmentally friendly cement in China

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  • Geopolymeric material and preparation method thereof

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Effect test

Embodiment 1

[0031] This embodiment provides a geopolymer cement material, which is made of the following raw materials in parts by weight: 100 parts of diaspore, 20 parts of phillips, 80 parts of slag, and 95 parts of soaking liquid. 4 parts of structural template agent, 4 parts of sodium hydroxide solution, and 5 parts of synergistic activator. in:

[0032] The soaking solution is a tert-butylamine prepolymer solution, the structural template agent is a sodium silicate solution, and the synergistic activator is a tert-butylamine prepolymer solution.

[0033] The tert-butylamine prepolymer is prepared from tert-butyl alcohol and urea through the following process: First, add urea, adjust the pH=7 with a sulfuric acid solution with a mass concentration of 30%, and add urea and tert-butylamine in a molar ratio of 1:1, Add tert-butanol according to the molar ratio between urea and tert-butanol as 2:1, heat to 45°C, and keep it warm for 15 minutes, then add concentrated sulfuric acid with a ...

Embodiment 2

[0046] This embodiment provides a geopolymer cement material, which is made of the following raw materials in parts by weight: 100 parts of diaspore, 80 parts of phillips, 20 parts of slag, and 140 parts of soaking liquid. 10 parts of structural template agent, 10 parts of sodium hydroxide solution, and 10 parts of synergistic activator.

[0047] The selection and specification of raw material in the present embodiment are identical with embodiment 1.

[0048] The preparation method of the geopolymer cement material in this embodiment is the same as that in Embodiment 1.

[0049] The performance test method of this embodiment is the same as that of Example 1, and the performance test results are shown in Table 1.

Embodiment 3

[0051]This embodiment provides a geopolymer cement material, which is made of the following raw materials in parts by weight: 100 parts of diaspore, 60 parts of phillips, 60 parts of slag, and 120 parts of soaking liquid. 7 parts of structural template agent, 7 parts of sodium hydroxide solution, and 10 parts of synergistic activator.

[0052] The selection and specification of raw material in the present embodiment are identical with embodiment 1.

[0053] The preparation method of the geopolymer cement material in this embodiment is the same as that in Embodiment 1.

[0054] The performance test method of this embodiment is the same as that of Example 1, and the performance test results are shown in Table 1.

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Abstract

The invention provides a geopolymeric material and a preparation method thereof. The geopolymeric material comprises diaspore, grenatite, slag, soaking solution, structure template, sodium hydroxide solution and synergistic activator. The preparation method comprises the steps of at first soaking the diaspore in the soaking solution, taking out and roasting the soaked diaspore, using the structure template for leaching out the roasted diaspore by the Bayer process to acquire modified alumina, at last adding the modified alumina, grenatite and slag into an alkaline solution mixed by the sodium hydroxide solution and the synergistic activator, stirring for reaction to acquire a resultant of reaction, namely, the geopolymeric material. The preparation method makes certain aluminium silicates in the diaspore to go through a thermal decomposition reaction, to generate an amorphous silica which is soluble in tertiary butyl prepolymer solution under certain temperature, thus the purpose of desilicication is achieved, and the use rate of the diaspore is enhanced.

Description

technical field [0001] The invention belongs to the field of road engineering materials, and relates to a geopolymeric cement material, in particular to a geopolymeric cement material and a preparation method thereof. Background technique [0002] At present, geopolymer cement has become an important part of the material field due to its excellent performance. The finished products of geopolymer cement in bags have been sold in foreign countries, and construction parties have gradually begun to favor this high-performance material; while the research and application of geopolymer cement in China is still in its infancy, and construction units use it in the construction process. Most of the cement is Portland cement. Although Portland cement is widely used, it has insurmountable defects such as high energy consumption for preparation and serious environmental pollution, which is contrary to the concept of "sustainable development" in my country. The use of cement in our coun...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B12/00C04B7/153
CPCC04B7/1535C04B12/005Y02P40/10
Inventor 王朝辉赵建雄杨雪狄升贯王新岐高志伟张磊
Owner CHANGAN UNIV
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