Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Microbial immobilization method for self-repairing of concrete cracks
The invention provides a microbial immobilization method for self-repairing of concrete cracks and belongs to the field of microbiology and civil engineering material crossing technologies. The methodcomprises the following steps: immobilizing microorganisms or microbial spores in a carrier, and carrying out an immobilization process of wrapping treatment; carrying out a secondary immobilizationprocess of loading nutrient substances in the carrier; and carrying out an embedding process of doping the immobilized carrier obtained by the secondary immobilization process into a concrete raw material, wherein the carrier is coral reef calcareous sand; and the nutrient substances comprise 3, 5-dinitrobenzyl alcohol and sodium trimetaphosphate. According to the method provided by the invention,the survival rate of microorganisms can be increased; the crack repairing width can be increased (the maximum repairing width reaches 1 mm or above, and the average repairing width reaches 0.7-0.9 mm), and the concrete compressive strength is recovered by 80% or above; the compressive strength loss of the repaired concrete under sulfate erosion can be effectively reduced, the sulfate erosion resistance of the repaired concrete is improved, and the durability of the concrete is improved.
本发明提供一种混凝土裂缝自修复的微生物固载方法，属于微生物学和土木工程材料交叉技术领域，包括：将微生物或微生物芽孢固载在载体中，并进行外包裹处理的固载工艺；将营养物质负载于上述载体中的二次固定工艺；以及，将上述二次固定工艺所得固定后载体掺杂于混凝土原料中的预埋工艺；上述载体为珊瑚礁钙质砂；上述营养物质中包括3,5‑二硝基苄醇和三偏磷酸钠。本发明提供的方法能增加微生物的存活率；能增加裂缝修复宽度(最大修复宽度达1mm以上，平均修复宽度达0.7‑0.9mm)，混凝土抗压强度恢复80％以上；能有效降低硫酸盐侵蚀下修复后混凝土抗压强度损失，提升修复后混凝土抗硫酸盐侵蚀性能，增加混凝土耐久性。
Microbial immobilization method for self-repairing of concrete cracks
The invention provides a microbial immobilization method for self-repairing of concrete cracks and belongs to the field of microbiology and civil engineering material crossing technologies. The methodcomprises the following steps: immobilizing microorganisms or microbial spores in a carrier, and carrying out an immobilization process of wrapping treatment; carrying out a secondary immobilizationprocess of loading nutrient substances in the carrier; and carrying out an embedding process of doping the immobilized carrier obtained by the secondary immobilization process into a concrete raw material, wherein the carrier is coral reef calcareous sand; and the nutrient substances comprise 3, 5-dinitrobenzyl alcohol and sodium trimetaphosphate. According to the method provided by the invention,the survival rate of microorganisms can be increased; the crack repairing width can be increased (the maximum repairing width reaches 1 mm or above, and the average repairing width reaches 0.7-0.9 mm), and the concrete compressive strength is recovered by 80% or above; the compressive strength loss of the repaired concrete under sulfate erosion can be effectively reduced, the sulfate erosion resistance of the repaired concrete is improved, and the durability of the concrete is improved.
本发明提供一种混凝土裂缝自修复的微生物固载方法，属于微生物学和土木工程材料交叉技术领域，包括：将微生物或微生物芽孢固载在载体中，并进行外包裹处理的固载工艺；将营养物质负载于上述载体中的二次固定工艺；以及，将上述二次固定工艺所得固定后载体掺杂于混凝土原料中的预埋工艺；上述载体为珊瑚礁钙质砂；上述营养物质中包括3,5‑二硝基苄醇和三偏磷酸钠。本发明提供的方法能增加微生物的存活率；能增加裂缝修复宽度(最大修复宽度达1mm以上，平均修复宽度达0.7‑0.9mm)，混凝土抗压强度恢复80％以上；能有效降低硫酸盐侵蚀下修复后混凝土抗压强度损失，提升修复后混凝土抗硫酸盐侵蚀性能，增加混凝土耐久性。
Microbial immobilization method for self-repairing of concrete cracks
一种混凝土裂缝自修复的微生物固载方法
LI TAO (Autor:in) / LAI XIAOYING (Autor:in) / HUANG YA'E (Autor:in) / SUN HAOMING (Autor:in) / ZHANG BANG (Autor:in) / YU ANGYE (Autor:in) / CHEN XIAOWEI (Autor:in) / WANG KEYING (Autor:in) / WEN YOUHUA (Autor:in)
12.05.2020
Patent
Elektronische Ressource
Chinesisch
IPC:
C04B
Kalk
,
LIME
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