Preparation process of concrete with excellent frost resistance

By using a combination of composite fiber materials and a variety of antifreeze agents in concrete, the problem of limited freezing resistance of existing antifreeze concrete under extreme low temperature conditions is solved, and the effect of significantly improving freezing resistance and extending service life is achieved.

CN119751001AActive Publication Date: 2025-04-04SHENZHEN ZHONGTIANYUAN IND CO LTD
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Patent Information

Application Number
CN202411984668.4
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2024-12-31
Publication Date
2025-04-04
Estimated Expiration
2044-12-31

AI Technical Summary

Technical Problem

The existing anti-freeze-resistant concrete has limited freezing properties under extremely low temperature conditions, and the use of anti-freeze agents will cause pressure on the environment, affecting other concrete properties.

Method used

The combination of composite fiber materials and a variety of antifreeze agents, including modified glass fibers, modified polypropylene fibers and modified steel fibers, as well as propylene glycol, silane coupling agents, nanosilica, calcium acetate and polyethylene glycol phosphate, is used to improve the antifreeze properties of concrete by optimizing the mix ratio and process flow.

Benefits of technology

It significantly improves the anti-freeze properties of concrete, extends its service life, reduces cracks and structural damage caused by freeze-thaw cycles, and provides higher stability and durability in infrastructure construction in cold areas.

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Abstract

The invention discloses a preparation process of concrete with excellent frost resistance, which comprises the following steps: weighing the following raw materials in parts by weight: 330-350 parts of cement, 650-700 parts of fine aggregate, 850-900 parts of coarse aggregate, 80-100 parts of fly ash, 20-40 parts of silica fume, 3-8 parts of a water reducing agent, 20-35 parts of a composite fiber material, 5-10 parts of an antifreeze agent and 160-180 parts of water; uniformly mixing the fine aggregate and the coarse aggregate to obtain an aggregate mixture; adding the composite fiber into the aggregate mixture, uniformly mixing, adding cement, fly ash and silica fume, and uniformly mixing to obtain a premix; adding a water reducing agent and an anti-freezing agent into water, and uniformly mixing to obtain an external liquid; and adding the external liquid into the premix, and uniformly stirring to obtain the feed. The concrete with excellent frost resistance is especially suitable for infrastructure construction in cold regions, and can effectively reduce the damage of freeze-thaw cycle to the structure and prolong the service life.
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Citation Information

Patent Citations

  • Insulation flame-retardant glass fiber reinforced PA66 / PPS / PES power fitting material and preparation method thereof

    CN106566241A

  • Corrosion-resistant concrete interface treating agent and application thereof

    CN111635169A

  • Anti-freezing concrete and preparation method thereof

    CN111777378A

  • Anti-freezing concrete mixture and preparation method thereof

    CN112408911A

  • Low-shrinkage waterproof concrete for underground engineering and preparation process of low-shrinkage waterproof concrete

    CN113045267A

Cited By

  • Freeze-thaw resistant concrete for highway in cold region and preparation method thereof

    CN120365012A