Preparation method of concrete expanding agent

A technology of expansive agent and concrete, which is applied in the field of concrete, can solve the problems of poor stability of the expansive effect of concrete expansive agent, and achieve the effects of ensuring stability, promoting hydration, and compensating for shrinkage

Pending Publication Date: 2021-04-06
成都楠裘榕科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The technical problem to be solved by the present invention is to provide a method for preparing a concrete expansive agent in view of the poor continuous stability of the expansion effect of the concrete expansive agent

Method used

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  • Preparation method of concrete expanding agent

Examples

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preparation example Construction

[0022] The preparation method of the mixture is: stir and mix the aluminum ash, barium oxide and nitric acid solution at a mass ratio of 1:0.1-0.3:5-7, then add polyacrylamide with an aluminum ash mass of 8-11%, and stir at 800r / min 30min, stand still for 1-3h, and spray dry to obtain the mixture.

[0023] The additive is prepared by mixing ferric sulfate and ferrous chloride in a mass ratio of 4:3-6.

[0024] The auxiliary materials are polyethylene oxide-polypropylene oxide-polyethylene oxide triblock copolymer and tung oil mixed in a mass ratio of 3:1-2 to obtain the product.

[0025] The pore forming agent is any one of ammonium bicarbonate and sodium bicarbonate.

[0026] The dispersant is any one of polyethylene glycol and fatty acid polyethylene glycol ester.

[0027] The mixed solvent is made by mixing sodium hydroxide solution and acetone at a volume ratio of 8:3-5.

[0028] The wrapping agent is made by mixing sodium alginate and maleic anhydride in a mass ratio o...

Embodiment 1

[0035] The preparation method of the mixture is: stir and mix aluminum ash, barium oxide and nitric acid solution at a mass ratio of 1:0.3:7, then add polyacrylamide with 11% aluminum ash mass, stir at 800r / min for 30min, and let stand for 3h. Spray drying to obtain the mixture.

[0036] The additive is prepared by mixing ferric sulfate and ferrous chloride in a mass ratio of 4:6.

[0037] The auxiliary material is polyethylene oxide-polypropylene oxide-polyethylene oxide triblock copolymer and tung oil mixed at a mass ratio of 3:2 to obtain the product.

[0038] The pore former is sodium bicarbonate.

[0039] The dispersant is fatty acid polyethylene glycol ester.

[0040] The mixed solvent is sodium hydroxide solution and acetone mixed at a volume ratio of 8:5.

[0041] The coating agent is made by mixing sodium alginate and maleic anhydride in a mass ratio of 9:4.

[0042] A preparation method of concrete expansive agent, the preparation method comprises the steps of: ...

Embodiment 2

[0048] The preparation method of the mixture is: stir and mix aluminum ash, barium oxide and nitric acid solution at a mass ratio of 1:0.2:6, then add polyacrylamide with an aluminum ash mass of 8-11%, stir at 800r / min for 30min, and let stand 2h, spray drying to obtain the mixture.

[0049] The additive is prepared by mixing ferric sulfate and ferrous chloride at a mass ratio of 4:5.

[0050] The auxiliary material is polyethylene oxide-polypropylene oxide-polyethylene oxide triblock copolymer and tung oil mixed at a mass ratio of 3:1.5 to obtain the product.

[0051] The pore former is ammonium bicarbonate.

[0052] The dispersant is polyethylene glycol.

[0053] The mixed solvent is made by mixing sodium hydroxide solution and acetone in a volume ratio of 8:4.

[0054] The coating agent is made by mixing sodium alginate and maleic anhydride in a mass ratio of 9:3.

[0055] A preparation method of concrete expansive agent, the preparation method comprises the steps of: ...

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PUM

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Abstract

The invention relates to a preparation method of a concrete expanding agent, and belongs to the technical field of concrete. Aluminum ash and barium oxide are used as basic raw materials and dissolved through nitric acid, then polyacrylamide is used for flocculation, metal ions in the aluminum ash and barium oxide are in full contact and then stirred with mixed iron salt, and porous high-activity aluminum oxide particles loaded with barium and magnetic particles are formed under the action of urea and a pore-forming agent, and then are subjected to high-temperature steam curing with the ardealite and the calcium oxide, the formed calcium hydroxide and calcium oxide are loaded in the porous particles and then wrapped with the wrapping agent, and therefore the concrete expanding agent is obtained, and the problem that the continuous stability of the expanding effect of the concrete expanding agent is poor is effectively solved.

Description

technical field [0001] The invention relates to a preparation method of a concrete expansion agent, which belongs to the technical field of concrete. Background technique [0002] Concrete is one of the most important civil engineering materials in contemporary times and is widely used in all aspects of construction. However, due to the widespread shrinkage of concrete, the performance of concrete cracking, strength, anti-seepage, and corrosion resistance is reduced. As a new type of concrete admixture, concrete expansive agent can react with cement and water to produce crystals with larger volume, which can expand the volume of concrete and generate a certain prestress, which helps to control the shrinkage and cracking of concrete and protect the concrete structure. [0003] Concrete expansion agent can be widely used in various fields such as underground parking lots, highway pavement, tunnels, foundation pits, bridge concrete surfaces, self-waterproof rigid roofs, and ho...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B24/38
CPCC04B40/0046C04B22/0006C04B22/064C04B22/085C04B22/149C04B22/12C04B24/281C04B24/126C04B22/10C04B24/32C04B22/06C04B24/08C04B22/062C04B24/008C04B24/04
Inventor 谭桂红
Owner 成都楠裘榕科技有限公司
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