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A kind of magnesium oxysulfate-based raw soil curing agent, its preparation method and application

A magnesium oxysulfide-based raw soil and curing agent technology, which is applied in the manufacture of tools, soil protection, infrastructure engineering, etc., can solve the problems of poor water resistance, low strength, high energy consumption, etc., and achieve high curing strength and good water resistance , the effect of low energy consumption

Active Publication Date: 2021-05-28
深圳市元亨环保产业有限公司 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a magnesium oxysulfate-based raw soil curing agent to solve the problems of low strength, poor water resistance, high energy consumption and environmental protection when using inorganic cementitious materials such as cement, lime or gypsum to solidify raw soil.

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  • A kind of magnesium oxysulfate-based raw soil curing agent, its preparation method and application

Examples

Experimental program
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Effect test

Embodiment 1

[0027] A magnesium oxysulfide-based raw soil curing agent, by weight, the magnesium oxysulfide-based soil curing agent comprises: 100 parts of lightly burned magnesium oxide powder, density 1.22g / cm 3 67 parts of magnesium sulfate solution, 0.5 parts of polyvinyl alcohol fiber, 1.5 parts of phosphoric acid and sodium dihydrogen phosphate (1:1 by weight), 1.5 parts of ferrous sulfate.

[0028] Preparation process: Prepare materials according to the above ratio; put the magnesium sulfate solution into the mixer, add polyvinyl alcohol fiber (toughening and anti-cracking fiber), phosphoric acid and sodium dihydrogen phosphate (strengthening aid), stir for 2 minutes, then add light burning oxidation Magnesium powder, stirred for 3 minutes, and finally added ferrous sulfate (water-resistant additive), stirred for 2 minutes, that is, magnesium oxysulfide-based soil curing agent.

[0029] Raw soil solidification: by weight, take 20 parts of raw soil and 170 parts of the above-mentione...

Embodiment 2

[0032] A magnesium oxysulfide-based raw soil curing agent, by weight, the magnesium oxysulfide-based soil curing agent comprises: 100 parts of lightly burned magnesium oxide powder, density 1.22g / cm 3 79.5 parts of magnesium sulfate solution, 0.6 parts of polyvinyl alcohol fiber, 1.3 parts of citric acid and sodium dihydrogen phosphate (1:1 by weight), 1.3 parts of ferrous sulfate.

[0033] Preparation process: Prepare materials according to the above ratio; put the magnesium sulfate solution into the mixer, add polyvinyl alcohol fiber (toughening and anti-cracking fiber), citric acid and sodium dihydrogen phosphate (strengthening aid), stir for 3 minutes, and then add lightly burned Magnesium oxide powder, stirred for 3 minutes, and finally added ferrous sulfate (water resistance additive), stirred for 2 minutes to obtain magnesium oxysulfide-based soil curing agent.

[0034] Solidification of raw soil: by weight, take 60 parts of raw soil and 183 parts of the above-mentioned...

Embodiment 3

[0037] A magnesium oxysulfide-based raw soil curing agent, by weight, the magnesium oxysulfide-based soil curing agent comprises: 100 parts of lightly burned magnesium oxide powder, density 1.22g / cm 3 94 parts of magnesium sulfate solution, 0.7 parts of polyvinyl alcohol fiber, 2.0 parts of citric acid and sodium dihydrogen phosphate (1:1 by weight), 2.0 parts of ferrous sulfate.

[0038] Preparation process: Prepare materials according to the above ratio; put the magnesium sulfate solution into the mixer, add polyvinyl alcohol fiber (toughening and anti-cracking fiber), citric acid and sodium dihydrogen phosphate (strengthening aid), stir for 3 minutes, and then add lightly burned Magnesium oxide powder, stirred for 3 minutes, and finally added ferrous sulfate (water resistance additive), stirred for 2 minutes to obtain magnesium oxysulfide-based soil curing agent.

[0039] Raw soil curing: by weight, take 90 parts of raw soil and 198 parts of the above-mentioned magnesium ox...

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Abstract

A magnesium oxysulfide-based raw soil curing agent, its preparation method and application. The curing agent includes by weight: 100 parts of light-burned magnesium oxide powder; 50 parts to 250 parts of magnesium sulfate solution; 2.0 parts; 0.5 to 5.0 parts of reinforcing additives; 0.8 to 8.0 parts of water resistance additives. The preparation method comprises the steps of pouring the magnesium sulfate solution into a mixer, adding toughening and anti-cracking fibers, light-burned magnesium oxide powder, reinforcing additives and water-resistant additives, and stirring for a period of time. The application includes taking 100 parts of raw soil and 130 to 900 parts of the above-mentioned curing agent by weight, mixing the two, stirring evenly to obtain a cured sample slurry, and then putting the cured sample slurry into a mold for curing and molding, covering the plastic film To keep the moisture, keep it in an environment with a temperature of 5-65°C and a relative humidity of 45%-85% for 7d-50d. Compared with the existing curing agent, the curing agent has higher curing strength and better water resistance.

Description

technical field [0001] The invention relates to the field of raw soil curing, in particular to a magnesium oxysulfide-based raw soil curing agent, a preparation method and application of the magnesium oxysulfide-based raw soil curing agent. Background technique [0002] With the rapid development of the national economy, the construction industry has been greatly improved. There are more and more high-rise and super high-rise buildings, and the problem of disorderly stacking of earthwork after excavation of building foundations has arisen, which has brought about the possibility of earthwork being reused. The adverse consequences of low production efficiency, heavy environmental pollution, and waste of land resources. If this problem is not handled well, it will also threaten people's property and personal safety. Therefore, the problem of solidification and utilization of raw soil has become the focus of people's attention. [0003] Traditional raw soil curing agents mostl...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C04B28/30E02D3/12B28B11/24
CPCB28B11/245C04B28/30C04B2201/50E02D3/12E02D2300/0045C04B9/00C04B16/0641C04B22/165C04B22/16C04B22/142C04B24/06C04B14/04
Inventor 朱效甲宋共楼古鸿尹泽和张秀娟
Owner 深圳市元亨环保产业有限公司
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