一种无速凝剂喷射混凝土及其制备方法和应用
By using a shotcrete formulation without accelerators, the problems of early strength loss, reduced durability, and poor construction adaptability caused by accelerators in traditional shotcrete are solved. This achieves high early strength, good durability, and low cost, making it suitable for shotcrete applications on tunnel sidewalls and slopes.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- YCIC HIGHWAY CONSTR CO LTD
- Filing Date
- 2025-10-22
- Publication Date
- 2026-07-17
AI Technical Summary
The use of accelerators in traditional shotcrete technology leads to early strength loss, reduced durability, high cost, poor construction adaptability, and process binding issues, making it difficult to meet the construction requirements of tunnel sidewalls.
The sprayed concrete formula without accelerators includes cement, fly ash, silica fume, slag powder, sodium bentonite, stone powder, fine aggregate, coarse aggregate, early strength agent, viscosity modifier, air-entraining agent and water-reducing agent. By optimizing the cementitious materials and aggregate gradation, it achieves concrete with high early strength, good durability and high density, and reduces the negative impact of accelerators.
It achieves a strength of 8-15MPa in 12 hours, with continuous strength growth in the later stages, improved durability, reduced material costs, simplified construction processes, reduced environmental pollution, improved construction efficiency, and expanded application scenarios.
Smart Images
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