A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Recycled aggregate strengthening method based on microorganisms and nanometer materials
The invention relates to the technical field of building materials, and discloses a recycled aggregate strengthening method based on microorganisms and nano materials, which adopts a method of combining nano silicon dioxide sol treatment and nitroreductase denitrification induction of calcium carbonate precipitation, and can prepare granular recycled aggregate with excellent performance. Meanwhile, the method is not influenced by the water-cement ratio and composition of mortar attached to the recycled concrete, and can be used for preparing the recycled aggregate from the recycled concrete with various grades. The crushing value, the apparent density, the water absorption rate and the firmness of the recycled aggregate prepared by the method meet the I-class requirements of GB/T25177-2010 Recycled Coarse Aggregate for Concrete, the recycled concrete can be utilized to the maximum extent, resources are saved, and the environment is protected.
本发明涉及建筑材料技术领域，公开了一种基于微生物和纳米材料的再生骨料强化方法，采用纳米二氧化硅溶胶处理和硝基还原杆菌反硝化诱导碳酸钙沉淀相结合的方法，能制备出性能优异的颗粒状再生骨料，同时本发明不受再生混凝土附着砂浆的水灰比和组成的影响，可以用于各种标号再生混凝土制备再生骨料。采用本发明制备的再生骨料压碎值、表观密度、吸水率和坚固性满足《GB/T25177‑2010混凝土用再生粗骨料》I类要求，能够最大化地利用再生混凝土，节约资源，保护环境。
Recycled aggregate strengthening method based on microorganisms and nanometer materials
The invention relates to the technical field of building materials, and discloses a recycled aggregate strengthening method based on microorganisms and nano materials, which adopts a method of combining nano silicon dioxide sol treatment and nitroreductase denitrification induction of calcium carbonate precipitation, and can prepare granular recycled aggregate with excellent performance. Meanwhile, the method is not influenced by the water-cement ratio and composition of mortar attached to the recycled concrete, and can be used for preparing the recycled aggregate from the recycled concrete with various grades. The crushing value, the apparent density, the water absorption rate and the firmness of the recycled aggregate prepared by the method meet the I-class requirements of GB/T25177-2010 Recycled Coarse Aggregate for Concrete, the recycled concrete can be utilized to the maximum extent, resources are saved, and the environment is protected.
本发明涉及建筑材料技术领域，公开了一种基于微生物和纳米材料的再生骨料强化方法，采用纳米二氧化硅溶胶处理和硝基还原杆菌反硝化诱导碳酸钙沉淀相结合的方法，能制备出性能优异的颗粒状再生骨料，同时本发明不受再生混凝土附着砂浆的水灰比和组成的影响，可以用于各种标号再生混凝土制备再生骨料。采用本发明制备的再生骨料压碎值、表观密度、吸水率和坚固性满足《GB/T25177‑2010混凝土用再生粗骨料》I类要求，能够最大化地利用再生混凝土，节约资源，保护环境。
Recycled aggregate strengthening method based on microorganisms and nanometer materials
一种基于微生物和纳米材料的再生骨料强化方法
SHANG BOMING (author) / JIN FENG (author) / WANG SHANJUN (author) / YAO KANG (author) / WANG ZHEN (author) / ZHANG QI (author) / PENG XIN (author) / RONG XUEWEN (author)
2022-09-23
Patent
Electronic Resource
Chinese
IPC:
C04B
Kalk
,
LIME
| European Patent Office | 2020
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Building waste recycled aggregate composite strengthening method
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