一种胶凝材料包埋微生物复合固定骨料及其制备方法与应用
By soaking carbonate mineralizing bacteria solution and cementing solution in phosphogypsum-based lightweight aggregate, calcium carbonate and silica-rich gel are formed to encapsulate bacteria, solving the problems of low bacterial encapsulation efficiency and insufficient activity in phosphogypsum-based lightweight aggregate, and achieving a highly efficient concrete self-healing effect.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- YUNNAN UNIV
- Filing Date
- 2023-09-26
- Publication Date
- 2026-07-17
AI Technical Summary
How to improve the encapsulation efficiency and activity of bacterial strains in phosphogypsum-based lightweight aggregates, enhance the self-healing ability of concrete, and solve the environmental hazards and concrete cracking problems caused by phosphogypsum landfill?
By immersing phosphogypsum-based lightweight aggregate in a solution of carbonate mineralizing bacteria, drying it, immersing it in a cementing solution, and then placing it in a cementing material for CO2 curing, calcium carbonate and silica-rich gel are formed, which encapsulate the bacteria, improve mechanical strength and bacterial activity, and ensure that the bacteria are fixed in the pores and surface of the phosphogypsum-based lightweight aggregate.
It improves the encapsulation efficiency and activity of bacterial strains, enhances the self-healing ability of concrete, reduces bacterial leakage rate, forms a stable network structure, is suitable for concrete and mortar, has crack repair function, and is applicable to a wide range of types.
Smart Images
Figure CN117534505B_ABST