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Geopolymer whiskering inhibitor

A technology of efflorescence inhibitors and polymers, applied in the field of building materials, can solve problems such as quality accidents and prolong delivery time

Active Publication Date: 2018-07-10
CHONGQING UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Even cause a series of problems such as quality accidents and prolonging the delivery time

Method used

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  • Geopolymer whiskering inhibitor
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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] The geopolymer efflorescence inhibitor is prepared from the following raw materials in parts by weight: 28 parts of calcium-based bentonite, 33 parts of ultrafine slag powder, 18 parts of silica fume, 9 parts of nanomaterials, 5 parts of boric acid, according to the above mass The parts are weighed and the raw materials are put into a planetary mill and mixed evenly for 1 hour to obtain the desired efflorescence inhibitor.

[0020] The above-mentioned efflorescence inhibitor and cementitious material (metakaolin) were mixed into the geopolymer at a mass ratio of 1:10, stirred evenly, and subjected to standard curing. The 28d compressive strength was 38.9 MPa, and the pH value of the pore solution was 11.9.

Embodiment 2

[0022] The geopolymer efflorescence inhibitor is prepared from the following raw materials in parts by weight: 30 parts of calcium-based bentonite, 35 parts of ultrafine slag powder, 12 parts of silica fume, 6 parts of nanomaterials, 7 parts of boric acid, according to the above parts by mass Weigh the raw materials into a planetary mill and mix them uniformly for 1 hour to obtain the desired efflorescence inhibitor.

[0023] The above-mentioned efflorescence inhibitor and cementitious material (metakaolin) were mixed into the geopolymer at a mass ratio of 1:10, stirred evenly, and subjected to standard curing. The 28d compressive strength was 39.3 MPa, and the pH value of the pore solution was 11.7.

Embodiment 3

[0025] The geopolymer efflorescence inhibitor is prepared from the following raw materials in parts by weight: 20 parts of calcium-based bentonite, 35 parts of ultrafine slag powder, 15 parts of silica fume, 13 parts of nanomaterials, and 2 parts of boric acid, according to the above parts by mass Weigh the raw materials into a planetary mill and mix them uniformly for 1 hour to obtain the desired efflorescence inhibitor.

[0026] The above-mentioned efflorescence inhibitor and cementitious material (metakaolin) were mixed into the geopolymer at a mass ratio of 1:10, stirred evenly, and subjected to standard curing. The 28d compressive strength was 41.7MPa, and the pH value of the pore solution was 11.4.

[0027] control group

[0028] Use NaOH to adjust the modulus of water glass to 1.2 as an alkali activator, and the dosage accounts for 10% of the cementitious material (metakaolin), and the water-cement ratio is 0.5. After mixing and stirring according to its proportion, it ...

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Abstract

The invention provides a geopolymer whiskering inhibitor. The whiskering inhibitor can be used for effectively reducing the risk of surface whiskering of a geopolymer material, is good for setting andhardening and mechanical properties of a geopolymer and improves the engineering quality of construction. The geopolymer whiskering inhibitor is prepared through the following steps: putting the following components into a planet mill in parts by weight: 20 to 35 parts of calcium-based bentonite, 30 to 40 parts of ultrafine slag micro-powder, 10 to 20 parts of silicon ash, 5 to 15 parts of a nano-material and 1 to 8 parts of boric acid and uniformly mixing for 1h to prepare the inhibitor capable of effectively inhibiting alkali-activated geopolymer whiskering. The geopolymer whiskering inhibitor has the advantages that raw materials are easy to obtain and the cost is low.

Description

technical field [0001] The invention relates to the technical field of building materials, in particular to a geopolymer ubiquitin inhibitor. technical background [0002] Geopolymers refer to active (amorphous) aluminosilicate minerals that are obtained from [SiO4] through dissolution, diffusion, and polymerization reactions under strong alkali conditions. 4- , [AlO4] 5- The three-dimensional network structure formed. The energy consumption of geopolymer production is low, only 60% of Portland cement, and the preparation process CO 2 The emission is less, only 10%-20% of Portland cement. Its raw materials have a wide range of sources. In the past 30 years, it has developed from the stage of consuming natural kaolin mineral resources to the direction of geopolymerization of industrial solid waste preparation, such as: red mud, fly ash, low-activity tailings, etc. Geopolymers have the characteristics of both cement and polymer materials, and have become a hot spot for new...

Claims

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Application Information

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IPC IPC(8): C04B22/08
CPCC04B40/0042C04B14/104C04B18/141C04B18/146C04B22/0013C04B22/06
Inventor 孙科科彭小芹王淑萍曾路
Owner CHONGQING UNIV