Viscosity modifier for high-strength, high-temperature, flame-retardant concrete, preparation method and application thereof

Abstract

The invention belongs to the field of concrete admixtures, and relates to a concrete viscosity modifier and its preparation. The invention provides a concrete viscosity modifier, which comprises a double bond-containing polymer and a double bond photocatalyst; the double bond-containing polymer is prepared from the raw materials of the following components: bisphenol 5-50 parts by weight of compound, 5-100 parts by weight of monomer containing carboxyl group, 5-100 parts by weight of monomer containing sulfonic acid group, 1-50 parts by weight of unsaturated monomer, 0.1-10 parts by weight of 1,3-diene monomer Parts by weight, 10-300 parts by weight of alkali, 100-5000 parts by weight of solvent, 0.1-20 parts by weight of catalyst; the total amount of monomers containing carboxyl groups and monomers containing sulfonic acid groups is not less than 50 parts by weight. The obtained concrete viscosity modifier has the advantages of dissolvability, easy construction and good cohesiveness; when it is added to cement and other materials to prepare concrete, the obtained concrete has higher strength and aging resistance.

Description

technical field [0001] The invention belongs to the field of concrete admixtures, and in particular relates to a high-strength, high-temperature-resistant, flame-retardant concrete viscosity modifier and a preparation method thereof. Background technique [0002] With the country's increasing emphasis on the environment and building quality, how to further optimize and improve the comprehensive performance of concrete (such as construction flexibility, mechanical strength, flame retardancy, etc.) under the premise of green environmental protection has become the focus of attention. Since the end of the 20th century, people have been looking for an effective way to improve the comprehensive performance of concrete. At present, the effective way to improve the performance of concrete is mainly to improve some of its performance by introducing water reducing agent and reducing the amount of water; however, a lot of practice has proved that the addition of a single water reducin...

AI Technical Summary

Problems solved by technology

At present, the effective way to improve the performance of concrete is mainly through the introduction of water-reducing agents to improve some of its performance by reducing the amount of water; however, a lot of practice has proved that in the actual construction process, the addition of a single water-reducing agent is often not well coordinated. The comprehensive excellent performance of concrete is exerted, but the workability, bleeding and wrapping performance of concrete are still not good, which leads to many defects in concrete during construction, such as: honeycomb, pockmarked surface, cavity, exposed reinforcement, etc., and then Seriously affect the comprehensive performance of concrete, making it difficult to exert good mechanical strength, etc., and finally affect the overall strength of the building; It is easy to decompose and support combustion in the presence of an open flame, which makes it a potential dangerous factor after being used in construction

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