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

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...