Organosilicon concrete protectant and preparation method thereof

Abstract

The invention relates to an organosilicon concrete protectant and a preparation method thereof, and belongs to the technical field of concrete additives. The organosilicon concrete protectant is prepared by the following steps of: adding an alkyl silane oligomer, an emulsifying agent, an amino silane tackifier and water into a mixer, stirring at the temperature of between 50 and 70 DEG C for 2 to 4 hours, and cooling to normal temperature. Because the alkyl silane oligomer has small molecular structure and strong permeability, the alkyl silane oligomer can effectively permeate concrete and is quickly cross-linked with moisture absorbed by the concrete into macromolecular siloxane, capillaries and pores in the concrete are not blocked, and air and steam can freely enter and exit the concrete structure; therefore, the concrete has good hydrophobicity and air permeability. The organosilicon concrete protectant solves the problems that the conventional concrete protectant forms a macromolecular organic coating film on the surface, and when the concrete is subjected to high temperature, the protectant coating is easy to bubble, crack, peel and fall off. The service life of the concrete material is greatly improved.

Description

Technical field: [0001] The invention relates to an organosilicon concrete protective agent and a preparation method thereof, belonging to the technical field of concrete additive preparations. Background technique: [0002] Concrete is a porous material. There are capillaries, pores and air bubbles of different sizes inside it, which can absorb a large amount of external air and water. If exposed to harsh environments such as air pollution, ultraviolet rays, and acid rain for a long time, it is easy to It is damaged by external environmental erosion, so the protective treatment of concrete has attracted more and more attention. [0003] At present, the existing domestic concrete protective agents usually include paint, ointment, asphalt, etc. The protective principle of this type of protective agent is to apply a layer of the above-mentioned protective agent with a certain thickness on the concrete surface to form macromolecules on the concrete surface. The organic coating...

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to provide a kind of small molecular structure, strong permeability, which can effectively penetrate into the interior of concrete for 5-10mm, and react with the water absorbed by concrete to quickly cross-link and polymerize into macromolecular siloxane, which has good Waterproof, air permeability, permeability, and long-term performance; to solve the problem that the existing concrete protective agent uses a macromolecular organic coating film on the surface. When the concrete is subjected to high temperature, the surface pores are blocked by macromolecular organic substances, resulting in the protective agent coating. Organosilicon concrete protective agent with problems of bubbling, cracking, peeling, peeling and loss of protective effect and preparation method thereof