Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Method for repairing concrete cracks by utilizing regenerated calcium source and modified zeolite powder to induce calcium carbonate precipitation through microorganisms
The invention discloses a method for repairing concrete cracks by utilizing a regenerated calcium source and modified zeolite powder and inducing calcium carbonate precipitation through microorganisms, the regenerated calcium source from solid waste is treated to obtain a repairing liquid containing calcium ions, the repairing liquid is applied to repairing the concrete cracks through MICP, the repaired cracks have good anti-seepage capacity, and the repairing effect is good. And the generated precipitate also has good consolidation capability, and the crystal morphology is also good. The zeolite powder used in the invention contains active silicon dioxide and silicon trioxide, and can react with a hydration product calcium hydroxide of cement to generate a gelling substance, so that the cementing ability of MICP is improved. The zeolite modified by sodium chloride and calcium chloride has higher ion exchange capacity and can adsorb ammonia nitrogen generated by MICP.
本发明公开了一种利用再生钙源和改性沸石粉通过微生物诱导碳酸钙沉淀修复混凝土裂缝的方法，通过固体废弃物来源的再生钙源进行处理，得到含钙离子的修复液，应用在MICP修复混凝土裂缝中，修复后的裂缝具有良好抗渗能力，生成的沉淀物也具有良好的固结能力、晶体形貌也良好。本发明使用的沸石粉含有活性二氧化硅和三氧化二硅，能与水泥的水化产物氢氧化钙作用，生成胶凝物质，提高MICP的胶结能力。本发明氯化钠和氯化钙改性后的沸石具有更大的离子交换能力，能够吸附由于MICP产生的氨氮。
Method for repairing concrete cracks by utilizing regenerated calcium source and modified zeolite powder to induce calcium carbonate precipitation through microorganisms
The invention discloses a method for repairing concrete cracks by utilizing a regenerated calcium source and modified zeolite powder and inducing calcium carbonate precipitation through microorganisms, the regenerated calcium source from solid waste is treated to obtain a repairing liquid containing calcium ions, the repairing liquid is applied to repairing the concrete cracks through MICP, the repaired cracks have good anti-seepage capacity, and the repairing effect is good. And the generated precipitate also has good consolidation capability, and the crystal morphology is also good. The zeolite powder used in the invention contains active silicon dioxide and silicon trioxide, and can react with a hydration product calcium hydroxide of cement to generate a gelling substance, so that the cementing ability of MICP is improved. The zeolite modified by sodium chloride and calcium chloride has higher ion exchange capacity and can adsorb ammonia nitrogen generated by MICP.
本发明公开了一种利用再生钙源和改性沸石粉通过微生物诱导碳酸钙沉淀修复混凝土裂缝的方法，通过固体废弃物来源的再生钙源进行处理，得到含钙离子的修复液，应用在MICP修复混凝土裂缝中，修复后的裂缝具有良好抗渗能力，生成的沉淀物也具有良好的固结能力、晶体形貌也良好。本发明使用的沸石粉含有活性二氧化硅和三氧化二硅，能与水泥的水化产物氢氧化钙作用，生成胶凝物质，提高MICP的胶结能力。本发明氯化钠和氯化钙改性后的沸石具有更大的离子交换能力，能够吸附由于MICP产生的氨氮。
Method for repairing concrete cracks by utilizing regenerated calcium source and modified zeolite powder to induce calcium carbonate precipitation through microorganisms
一种利用再生钙源和改性沸石粉通过微生物诱导碳酸钙沉淀修复混凝土裂缝的方法
WANG BO (Autor:in) / QIAN JUN (Autor:in) / HUANG TAO (Autor:in) / DUAN KAILIN (Autor:in) / YUAN PENG (Autor:in) / ZHU LINGLI (Autor:in) / CHU HONGQIANG (Autor:in) / WU JIANFENG (Autor:in) / ZHANG FENGCHEN (Autor:in)
26.12.2023
Patent
Elektronische Ressource
Chinesisch
| Europäisches Patentamt | 2021
Method for repairing concrete cracks by utilizing microorganisms
| Europäisches Patentamt | 2021
| Europäisches Patentamt | 2022
| Europäisches Patentamt | 2021