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Method for preparing high-bonding-strength inorganic adhesive for concrete interface

An interface adhesive and concrete technology, applied in the field of building material preparation, can solve problems such as low bond strength, and achieve the effects of improving bond strength, improving adsorption strength, and improving adsorption cohesion.

Active Publication Date: 2018-05-01
张家界万众新型建筑材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The main technical problem to be solved by the present invention is to provide a method for preparing an inorganic concrete interface adhesive with high bonding strength, aiming at the defect of low bonding strength of the bonding material of the common inorganic concrete interface at present.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

example 1

[0024] According to the mass ratio of 20:30:50:1, mix bauxite, montmorillonite, citric acid solution with a concentration of 0.5mol / L and nickel boride, put them into a high-pressure reactor, heat up to 150°C, and Stir and react for 1 hour; after the reaction is finished, filter and separate to obtain the reaction filter residue, mix the reaction filter residue and sodium hydroxide at a mass ratio of 10:1, move it into a tubular resistance furnace, and heat up to 400°C, keep warm for 1 hour; after the reaction is over, take out the reaction product, wash the reaction product repeatedly with deionized water until the washing solution is neutral, and dry it naturally to obtain a self-made functional material. The sodium silicate solution is mixed according to the mass ratio of 1:5 to obtain a mixed solution; the mixed solution is stirred with a magnetic stirrer at a speed of 200r / min, and the pH of the above mixed solution is adjusted to 1mol / L hydrochloric acid with a concentrat...

example 2

[0026] According to the mass ratio of 20:30:50:1, mix bauxite, montmorillonite, citric acid solution with a concentration of 0.5mol / L and nickel boride, put them into a high-pressure reactor, heat up to 180°C, and Stir and react for 1 hour; after the reaction is finished, filter and separate to obtain the reaction filter residue, mix the reaction filter residue and sodium hydroxide at a mass ratio of 10:1, move it into a tubular resistance furnace, and heat up to 450°C, keep warm for 1 hour; after the reaction is over, take out the reaction product, wash the reaction product repeatedly with deionized water until the washing solution is neutral, and dry it naturally to obtain a self-made functional material. The sodium silicate solution is mixed according to the mass ratio of 1:5 to obtain the mixed solution; the mixed solution is stirred with a magnetic stirrer at a speed of 250r / min, and the pH of the above mixed solution is adjusted to 1mol / L hydrochloric acid with a concentr...

example 3

[0028]According to the mass ratio of 20:30:50:1, mix bauxite, montmorillonite, citric acid solution with a concentration of 0.5mol / L and nickel boride, put them into a high-pressure reactor, heat up to 200°C, and Stir and react for 2 hours; after the reaction is finished, filter and separate to obtain the reaction filter residue, mix the reaction filter residue and sodium hydroxide at a mass ratio of 10:1, move it into a tubular resistance furnace, and heat up to 500°C, keep warm for 2 hours; after the reaction is over, take out the reaction product, wash the reaction product repeatedly with deionized water until the washing solution is neutral, and dry it naturally to obtain a self-made functional material. The sodium silicate solution is mixed according to the mass ratio of 1:5 to obtain the mixed solution; the mixed solution is stirred with a magnetic stirrer at a speed of 300r / min, and the pH of the above mixed solution is adjusted to 1mol / L hydrochloric acid with a concent...

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Abstract

The invention relates to the technical field of building material preparation, in particular to a method for preparing high-bonding-strength inorganic adhesive for an concrete interface. The method comprises the steps of: adopting bauxite and montmorillonite as raw materials, and performing a reaction on the raw materials, organic acids and nickel boride under the conditions of a high temperatureand high pressure, wherein nickel boride is adopted as a catalyst, and metal ions in the bauxite and montmorillonitethe are made to leave original crystal lattices and enter the organic acids throughthe chelating property of the organic acids, so that cavities are formed in the original lattices of the bauxite and montmorillonite; and performing high-temperature dehydration in a resistance furnace so as to remove oxygen atoms at vertexes of tetrahedral and octahedral structures of the bauxite is removed and form six-coordinate structures, wherein oxygen cavities are formed in the original positions of the oxygen atoms, and the adsorption activity of the bauxite and montmorillonite can be increased through the generation of the cavities. The adsorption cohesion inside the inorganic adhesive prepared from the materials can be improved, and the adsorption strength of the adhesive and the concrete surface can be improved, so that the bonding strength of the inorganic adhesive for the concrete interface is improved.

Description

technical field [0001] The invention relates to the technical field of building material preparation, in particular to a preparation method of a high-bond strength inorganic concrete interface adhesive. Background technique [0002] When large-scale concrete projects enter the aging and disease period, and various quality problems appear at the interface between new and old concrete in new concrete projects, reinforcement and reinforcement are required. During reinforcement, repair, and pouring construction, there may be situations where the interface between new and old concrete is not bonded firmly, which all involves the issue of whether the old and new concrete can be combined as a whole to work together. The quality of the bonding performance of new and old concrete directly affects the success of repair and reinforcement. Therefore, it is of great social significance and significant economic benefit to carry out research on the bond performance of old and new concrete...

Claims

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Application Information

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IPC IPC(8): C04B28/04C04B20/02
CPCC04B20/023C04B28/04C04B2111/00637C04B2201/50C04B14/303C04B14/104C04B24/045C04B18/0436C04B14/28C04B22/002
Inventor 雷笑天林茂兰
Owner 张家界万众新型建筑材料有限公司
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