一种粉煤灰-脱硫石膏复合激发剂及其制备方法和在高抗盐冻混凝土中的应用
By using a compound activator of fly ash and desulfurized gypsum to construct a dense structure, the problem of insufficient stability of hydration products under salt-freeze coupling is solved, thereby improving the concrete's resistance to salt-freeze erosion and its durability. This makes it suitable for engineering projects in cold regions and those where de-icing salt is frequently used.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- INNER MONGOLIA JIAOKE ROAD & BRIDGE CONSTR CO LTD
- Filing Date
- 2026-04-27
- Publication Date
- 2026-07-17
AI Technical Summary
Existing fly ash and desulfurized gypsum composite activators have insufficient stability of hydration products under salt-freeze coupling effects, making it difficult to resist fatigue stress generated by salt solution penetration and freeze-thaw cycles in the long term. They also have poor resistance to erosion in the later stages, and conventional activators are significantly affected by ambient temperature and water-salt conditions.
Using a compound raw material of fly ash, desulfurized gypsum, inorganic particles, organic salt additives, water glass, reinforcing agents and water-reducing agents, a complete system is constructed to regulate particle decomposition and hydration products through the combined action of alkali source, sulfur source, aluminum source and organic salt, generating a dense structure, improving the microstructure and inhibiting the explosive formation of ettringite, thereby enhancing the concrete's resistance to salt freeze-thaw erosion.
It significantly improves the durability of concrete in salt-freeze coupled environments, effectively resists de-icing salt erosion and freeze-thaw cycles, improves workability and volume stability, reduces material costs and environmental impact, and is suitable for engineering fields in cold regions and where de-icing salt is frequently used.
Smart Images
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