Underwater anti-dispersion additive and anti-dispersion cement-based grouting material thereof

By adding a specific proportion of water-resistant dispersant and other components to the cement-based grouting material, an anti-dispersible cement-based grouting material was prepared, which solved the problem of the decline in strength of the existing cement-water glass slurry after use in water, and achieved the durability and anti-seepage effect of underground buildings.

CN119874250APending Publication Date: 2025-04-25邢国胜
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Patent Information

Application Number
CN202411907314.X
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2024-12-24
Publication Date
2025-04-25

AI Technical Summary

Technical Problem

After the existing cement-water glass slurry is used in water, the strength decreases in the later stage, the durability and stability are poor, making it difficult to effectively prevent leakage in underground buildings in the long run.

Method used

An underwater anti-dispersion additive is used to prepare an anti-dispersion cement-based grouting material by mixing components such as water-resistant dispersant, water-reducing agent, suspension agent, plastic expansion agent, coagulation agent, soda ash and defoaming agent in a specific proportion to improve its anti-dispersion performance and durability in water.

Benefits of technology

It has achieved the durability and stability of underwater buildings anti-seepage materials, extended the service life of the materials, and enhanced compressive strength, tensile strength and impermeability.

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Abstract

The underwater anti-dispersion additive is prepared from the following components in parts by weight: 30 to 50 parts of a water-resistant dispersing agent, 20 to 25 parts of a water reducing agent, 20 to 25 parts of a suspending agent, 5 to 10 parts of a plastic expanding agent, 25 to 30 parts of a coagulating agent, 40 to 60 parts of sodium carbonate and 25 to 30 parts of a de-foaming agent. The grouting material is composed of the following components in parts by weight: 1000 parts of PO425 ordinary Portland cement, 5-10 parts of an underwater anti-dispersion additive and 400 parts of water. The prepared anti-dispersion cement-based grouting material has the advantages of early strength, no shrinkage, slight expansion, impermeability and high durability, is suitable for the field of underground buildings, and has a wide application prospect.
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