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A platform for research: civil engineering, architecture and urbanism
MICP targeted repair method based on magnetic response
The invention discloses an MICP targeted repair method based on magnetic response, which comprises the following steps: step 1, preparing a bacterial culture solution containing magnetized bacteria, the magnetized bacteria being mineralized calcium carbonate precipitation bacteria with magnetic response; 2, preparing a cementing liquid containing a calcium ion component; and 3, jointly injecting the bacterial culture solution and the cementing solution into the to-be-repaired part of the to-be-repaired article, and immediately applying a magnetic field which enables the magnetized bacteria to move to the deep part of the to-be-repaired part, so as to complete the repair of the to-be-repaired article. According to the method, magnetic nanoparticles are attached to the surfaces of mineralized calcium carbonate precipitation bacteria, so that the mineralized calcium carbonate precipitation bacteria are initially influenced by magnetic force, the movement of the mineralized calcium carbonate precipitation bacteria in a culture solution has a certain tendency, the initial thallus concentration of thalli in the deep part of a to-be-repaired object is further improved, and the deep part of the to-be-repaired object has a better repairing effect. In addition, the bacteria with the magnetic nanoparticles attached to the surfaces can be affected by a magnetic field, the movement of the bacteria in concrete pores has targeting performance, then the distribution condition of the bacteria in concrete cracks in the deep underground structure is changed, the self-repairing effect of the concrete cracks is improved, and the toughness of the deep underground structure is improved.
本发明公开了一种基于磁响应的MICP靶向修补方法，包括如下步骤：步骤一、制作含有磁化细菌的细菌培养液，所述磁化细菌为具有磁响应性的矿化碳酸钙沉淀细菌；步骤二、配置含有钙离子成分的胶结液；步骤三、将细菌培养液与胶结液共同注入待修复物品的待修复处，并立刻施加使得磁化细菌向待修复处深处移动的磁场，完成对待修复物品的修复。本发明通过使得矿化碳酸钙沉淀细菌表面附着磁性纳米颗粒，使得其初始时受到磁力影响，从而使得其在培养液中的运动具有一定的趋势性，进而提高菌体在待修复物深处的初始菌体浓度，从而使得待修复物的深处具有更好的修复效果。此外，本发明可以使表面附着磁性纳米颗粒的细菌受到磁场影响，在混凝土孔隙中的运动具有靶向性，进而改变菌体在深层地下结构中混凝土裂缝的分布情况，提高混凝土裂缝的自修复效果，提升深层地下结构的韧性。
MICP targeted repair method based on magnetic response
The invention discloses an MICP targeted repair method based on magnetic response, which comprises the following steps: step 1, preparing a bacterial culture solution containing magnetized bacteria, the magnetized bacteria being mineralized calcium carbonate precipitation bacteria with magnetic response; 2, preparing a cementing liquid containing a calcium ion component; and 3, jointly injecting the bacterial culture solution and the cementing solution into the to-be-repaired part of the to-be-repaired article, and immediately applying a magnetic field which enables the magnetized bacteria to move to the deep part of the to-be-repaired part, so as to complete the repair of the to-be-repaired article. According to the method, magnetic nanoparticles are attached to the surfaces of mineralized calcium carbonate precipitation bacteria, so that the mineralized calcium carbonate precipitation bacteria are initially influenced by magnetic force, the movement of the mineralized calcium carbonate precipitation bacteria in a culture solution has a certain tendency, the initial thallus concentration of thalli in the deep part of a to-be-repaired object is further improved, and the deep part of the to-be-repaired object has a better repairing effect. In addition, the bacteria with the magnetic nanoparticles attached to the surfaces can be affected by a magnetic field, the movement of the bacteria in concrete pores has targeting performance, then the distribution condition of the bacteria in concrete cracks in the deep underground structure is changed, the self-repairing effect of the concrete cracks is improved, and the toughness of the deep underground structure is improved.
本发明公开了一种基于磁响应的MICP靶向修补方法，包括如下步骤：步骤一、制作含有磁化细菌的细菌培养液，所述磁化细菌为具有磁响应性的矿化碳酸钙沉淀细菌；步骤二、配置含有钙离子成分的胶结液；步骤三、将细菌培养液与胶结液共同注入待修复物品的待修复处，并立刻施加使得磁化细菌向待修复处深处移动的磁场，完成对待修复物品的修复。本发明通过使得矿化碳酸钙沉淀细菌表面附着磁性纳米颗粒，使得其初始时受到磁力影响，从而使得其在培养液中的运动具有一定的趋势性，进而提高菌体在待修复物深处的初始菌体浓度，从而使得待修复物的深处具有更好的修复效果。此外，本发明可以使表面附着磁性纳米颗粒的细菌受到磁场影响，在混凝土孔隙中的运动具有靶向性，进而改变菌体在深层地下结构中混凝土裂缝的分布情况，提高混凝土裂缝的自修复效果，提升深层地下结构的韧性。
MICP targeted repair method based on magnetic response
一种基于磁响应的MICP靶向修补方法
KANG XIN (author) / WANG SHIQING (author) / CHEN RENPENG (author) / CHEN YONGQING (author)
2022-09-13
Patent
Electronic Resource
Chinese
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