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Underwater crack self-repairing concrete suitable for cold regions and preparation method thereof
The invention discloses an underwater crack self-repairing concrete suitable for cold regions and a preparation method thereof, and relates to the technical field of adsorption material preparation, and the concrete comprises the following components by mass: 1020-1120 parts of recycled coarse aggregate which is immobilized with microorganisms and has a particle size of 4.75-20 mm, 55-60 parts of ceramsite which is immobilized with microorganisms and has a particle size of 2.36-4.75 mm, 120-145 parts of ceramsite which is immobilized with nutrients and has a particle size of less than 2.36 mm, 350-410 parts of cement, and 375-425 parts of sand. The concrete comprises the following components in parts by weight: 75-90 parts of fly ash, 40-60 parts of silica fume, 10-13 parts of UWB-II anti-dispersing agent, 3-4 parts of polypropylene fiber, 4-7 parts of polycarboxylate superplasticizer and 200-250 parts of mixing water. The method comprises the following steps: preparing a sludge mixed solution; preparing a facultative aerobic selective culture medium; microbial acclimatization; preparing a mixed bacteria suspension; preparing regenerated coarse aggregate for adsorbing the bacterial liquid; preparing ceramsite immobilized with microorganisms; preparing ceramsite for immobilizing nutrient substances; and preparing the self-repairing concrete. A self-diagnosis self-repairing crack repairing technology is provided for the underwater concrete in the cold region, and the durability of the underwater concrete in the cold region is improved.
本发明公开了一种适用于寒冷地区水下裂缝自修复混凝土及其制备方法，涉及吸附材料制备技术领域，包括如下质量组分：固载有微生物且粒径为4.75~20mm的再生粗骨料1020~1120份，固载有微生物且粒径2.36~4.75mm陶粒55~60份，固载营养物质且粒径小于2.36mm陶粒120~145份，水泥350~410份，砂375~425份，粉煤灰75~90份，硅灰40~60份，UWB‑Ⅱ抗分散剂10~13份，聚丙烯纤维3~4份，聚羧酸减水剂4~7份，拌合水200~250份。本发明包括以下步骤：制备污泥混合液；制备兼性好氧选择培养基；微生物驯化；制备混菌悬浊液；制备吸附菌液的再生粗骨料；制备固载有微生物的陶粒；制备固载营养物质的陶粒；制备自修复混凝土。本发明为寒冷地区水下混凝土提供了自诊断自修复裂缝修复技术，提高了寒冷地区水下混凝土的耐久性。
Underwater crack self-repairing concrete suitable for cold regions and preparation method thereof
The invention discloses an underwater crack self-repairing concrete suitable for cold regions and a preparation method thereof, and relates to the technical field of adsorption material preparation, and the concrete comprises the following components by mass: 1020-1120 parts of recycled coarse aggregate which is immobilized with microorganisms and has a particle size of 4.75-20 mm, 55-60 parts of ceramsite which is immobilized with microorganisms and has a particle size of 2.36-4.75 mm, 120-145 parts of ceramsite which is immobilized with nutrients and has a particle size of less than 2.36 mm, 350-410 parts of cement, and 375-425 parts of sand. The concrete comprises the following components in parts by weight: 75-90 parts of fly ash, 40-60 parts of silica fume, 10-13 parts of UWB-II anti-dispersing agent, 3-4 parts of polypropylene fiber, 4-7 parts of polycarboxylate superplasticizer and 200-250 parts of mixing water. The method comprises the following steps: preparing a sludge mixed solution; preparing a facultative aerobic selective culture medium; microbial acclimatization; preparing a mixed bacteria suspension; preparing regenerated coarse aggregate for adsorbing the bacterial liquid; preparing ceramsite immobilized with microorganisms; preparing ceramsite for immobilizing nutrient substances; and preparing the self-repairing concrete. A self-diagnosis self-repairing crack repairing technology is provided for the underwater concrete in the cold region, and the durability of the underwater concrete in the cold region is improved.
本发明公开了一种适用于寒冷地区水下裂缝自修复混凝土及其制备方法，涉及吸附材料制备技术领域，包括如下质量组分：固载有微生物且粒径为4.75~20mm的再生粗骨料1020~1120份，固载有微生物且粒径2.36~4.75mm陶粒55~60份，固载营养物质且粒径小于2.36mm陶粒120~145份，水泥350~410份，砂375~425份，粉煤灰75~90份，硅灰40~60份，UWB‑Ⅱ抗分散剂10~13份，聚丙烯纤维3~4份，聚羧酸减水剂4~7份，拌合水200~250份。本发明包括以下步骤：制备污泥混合液；制备兼性好氧选择培养基；微生物驯化；制备混菌悬浊液；制备吸附菌液的再生粗骨料；制备固载有微生物的陶粒；制备固载营养物质的陶粒；制备自修复混凝土。本发明为寒冷地区水下混凝土提供了自诊断自修复裂缝修复技术，提高了寒冷地区水下混凝土的耐久性。
Underwater crack self-repairing concrete suitable for cold regions and preparation method thereof
一种适用于寒冷地区水下裂缝自修复混凝土及其制备方法
ZHANG JIAGUANG (author) / MA AOWEI (author) / ZHOU AIJUAN (author) / LIU YUANZHEN (author)
2023-08-22
Patent
Electronic Resource
Chinese
IPC:
C04B
Kalk
,
LIME
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