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Concrete crack repairing material with sodium alginate immobilized microorganisms and preparation method of concrete crack repairing material
The invention discloses a sodium alginate immobilized microorganism concrete crack repair material and a preparation method thereof, and the sodium alginate immobilized microorganism concrete crack repair material comprises the following components by mass: 0.5-2 parts of sodium alginate, 6-12 parts of urea, 17-34 parts of calcium acetate, 10 parts of bacterial strain liquid, and 190 parts of distilled water; the bacterial strain liquid is bacillus pasteurii strain liquid, the concentration of the microbial strain liquid is 107-109 cells/mL, and the ratio of beta-D-mannuronic acid to alpha-L-guluronic acid in the sodium alginate is 1: 1. The product of microorganism mineralization deposition is calcium carbonate, the calcium carbonate has good compatibility with a concrete matrix, and the calcium carbonate is an inorganic material, has no negative influence on the environment and is higher in durability. Sodium alginate and calcium acetate react to generate calcium alginate hydrogel, a good growth environment can be provided for microorganisms while the effective leaking stoppage effect is achieved in a short time, then the microorganisms are rapidly subjected to mineralization reaction, calcium carbonate precipitates are evenly generated in the calcium alginate hydrogel, finally certain strength is generated, and cracks are successfully plugged.
本发明公开了一种海藻酸钠固载微生物的混凝土裂缝修复材料及其制备方法，按照质量份数，包括以下组分：海藻酸钠0.5份‑2份、尿素6份‑12份、乙酸钙17份‑34份、细菌种液10份、蒸馏水190份；细菌种液为巴氏芽胞杆菌种液，微生物菌液浓度为107‑109cells/mL，海藻酸钠中β‑D‑甘露糖醛酸和α‑L‑古洛糖醛酸之比为1:1。本发明采用微生物矿化沉积的产物为碳酸钙，碳酸钙与混凝土基质有较好的相容性，且碳酸钙为无机材料，对环境无负面影响，耐久性更高。海藻酸钠与乙酸钙反应生成海藻酸钙水凝胶，可以在短时间内有效堵漏作用的同时为微生物提供一个良好的生长环境，进而使得微生物在迅速发生矿化反应，在海藻酸钙水凝胶中均匀生成碳酸钙沉淀，最终产生一定的强度，成功堵住裂缝。
Concrete crack repairing material with sodium alginate immobilized microorganisms and preparation method of concrete crack repairing material
The invention discloses a sodium alginate immobilized microorganism concrete crack repair material and a preparation method thereof, and the sodium alginate immobilized microorganism concrete crack repair material comprises the following components by mass: 0.5-2 parts of sodium alginate, 6-12 parts of urea, 17-34 parts of calcium acetate, 10 parts of bacterial strain liquid, and 190 parts of distilled water; the bacterial strain liquid is bacillus pasteurii strain liquid, the concentration of the microbial strain liquid is 107-109 cells/mL, and the ratio of beta-D-mannuronic acid to alpha-L-guluronic acid in the sodium alginate is 1: 1. The product of microorganism mineralization deposition is calcium carbonate, the calcium carbonate has good compatibility with a concrete matrix, and the calcium carbonate is an inorganic material, has no negative influence on the environment and is higher in durability. Sodium alginate and calcium acetate react to generate calcium alginate hydrogel, a good growth environment can be provided for microorganisms while the effective leaking stoppage effect is achieved in a short time, then the microorganisms are rapidly subjected to mineralization reaction, calcium carbonate precipitates are evenly generated in the calcium alginate hydrogel, finally certain strength is generated, and cracks are successfully plugged.
本发明公开了一种海藻酸钠固载微生物的混凝土裂缝修复材料及其制备方法，按照质量份数，包括以下组分：海藻酸钠0.5份‑2份、尿素6份‑12份、乙酸钙17份‑34份、细菌种液10份、蒸馏水190份；细菌种液为巴氏芽胞杆菌种液，微生物菌液浓度为107‑109cells/mL，海藻酸钠中β‑D‑甘露糖醛酸和α‑L‑古洛糖醛酸之比为1:1。本发明采用微生物矿化沉积的产物为碳酸钙，碳酸钙与混凝土基质有较好的相容性，且碳酸钙为无机材料，对环境无负面影响，耐久性更高。海藻酸钠与乙酸钙反应生成海藻酸钙水凝胶，可以在短时间内有效堵漏作用的同时为微生物提供一个良好的生长环境，进而使得微生物在迅速发生矿化反应，在海藻酸钙水凝胶中均匀生成碳酸钙沉淀，最终产生一定的强度，成功堵住裂缝。
Concrete crack repairing material with sodium alginate immobilized microorganisms and preparation method of concrete crack repairing material
海藻酸钠固载微生物的混凝土裂缝修复材料及其制备方法
SAKAE AKIRA (author) / CHEN YUTING (author) / ZHANG YING (author) / LIU DEE (author) / ZHANG LEI (author) / FENG YANG (author)
2022-03-22
Patent
Electronic Resource
Chinese
IPC:
C04B
Kalk
,
LIME
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