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A platform for research: civil engineering, architecture and urbanism
Preparation method of microorganism synergistic mineralization reinforced commercial mixing station waste aggregate
The invention relates to a preparation method of a microorganism synergistic mineralization reinforced commercial mixing station waste aggregate, which comprises the following steps: 1, soaking the commercial mixing waste aggregate in a mixed solution of 10-20 parts by mass of urea, 2-5 parts by mass of ammonia water and 100 parts by mass of water for 10-30 minutes, and screening to obtain an aggregate A; 2, fully mixing and stirring the commercially-mixed waste micro powder and the calcium-based solid waste micro powder according to the mass part ratio of 1: 2-2: 1 to obtain compound micro powder; 3, 10-30 parts by mass of compound micro powder, 100 parts by mass of aggregate A and 2-5 parts by mass of a chemical chelating agent are evenly mixed and poured into stirring equipment to be stirred, the mixture in the stirring equipment is subjected to bacillus subtilis bacterial liquid spray forming treatment, meanwhile, CO2 gas is injected into the mixture in the stirring equipment at the gas speed of 1.0-2.0 L/min, a semi-finished product is prepared after stirring is conducted for a period of time, and the finished product is obtained. And airing and sealing to obtain the carbon sequestration type recycled aggregate. According to the invention, the water absorption rate and the crushing value of the recycled aggregate are improved, and mineral storage of CO2 is realized.
一种微生物协同矿化强化商混站废弃骨料的制备方法，包括如下步骤：步骤一，将商混废弃骨料浸泡在10～20质量份尿素，2～5质量份氨水，100质量份水的混合溶液中10～30min，筛分后得到骨料A；步骤二，将商混废弃微粉和钙基固废微粉按质量份1:2～2:1充分混合搅拌后，得到复配微粉；步骤三，将10～30质量份复配微粉，100质量份骨料A，2～5质量份化学螯合剂，均匀混合，倒入搅拌设备中进行搅拌，并对搅拌设备中的混合物进行枯草芽孢杆菌菌液喷雾成型处理，同时以气速1.0～2.0L/min向搅拌设备的混合物中注入CO2气体，搅拌一段时间后制得半成品，晾干封存，得到固碳型再生骨料。本发明改善了再生骨料的吸水率和压碎值，实现了CO2的矿物封存。
Preparation method of microorganism synergistic mineralization reinforced commercial mixing station waste aggregate
The invention relates to a preparation method of a microorganism synergistic mineralization reinforced commercial mixing station waste aggregate, which comprises the following steps: 1, soaking the commercial mixing waste aggregate in a mixed solution of 10-20 parts by mass of urea, 2-5 parts by mass of ammonia water and 100 parts by mass of water for 10-30 minutes, and screening to obtain an aggregate A; 2, fully mixing and stirring the commercially-mixed waste micro powder and the calcium-based solid waste micro powder according to the mass part ratio of 1: 2-2: 1 to obtain compound micro powder; 3, 10-30 parts by mass of compound micro powder, 100 parts by mass of aggregate A and 2-5 parts by mass of a chemical chelating agent are evenly mixed and poured into stirring equipment to be stirred, the mixture in the stirring equipment is subjected to bacillus subtilis bacterial liquid spray forming treatment, meanwhile, CO2 gas is injected into the mixture in the stirring equipment at the gas speed of 1.0-2.0 L/min, a semi-finished product is prepared after stirring is conducted for a period of time, and the finished product is obtained. And airing and sealing to obtain the carbon sequestration type recycled aggregate. According to the invention, the water absorption rate and the crushing value of the recycled aggregate are improved, and mineral storage of CO2 is realized.
一种微生物协同矿化强化商混站废弃骨料的制备方法，包括如下步骤：步骤一，将商混废弃骨料浸泡在10～20质量份尿素，2～5质量份氨水，100质量份水的混合溶液中10～30min，筛分后得到骨料A；步骤二，将商混废弃微粉和钙基固废微粉按质量份1:2～2:1充分混合搅拌后，得到复配微粉；步骤三，将10～30质量份复配微粉，100质量份骨料A，2～5质量份化学螯合剂，均匀混合，倒入搅拌设备中进行搅拌，并对搅拌设备中的混合物进行枯草芽孢杆菌菌液喷雾成型处理，同时以气速1.0～2.0L/min向搅拌设备的混合物中注入CO2气体，搅拌一段时间后制得半成品，晾干封存，得到固碳型再生骨料。本发明改善了再生骨料的吸水率和压碎值，实现了CO2的矿物封存。
Preparation method of microorganism synergistic mineralization reinforced commercial mixing station waste aggregate
一种微生物协同矿化强化商混站废弃骨料的制备方法
HE XINGYANG (author) / ZHAO HAILONG (author) / SU YING (author) / DAI FEI (author) / YANG JIN (author) / ZHENG ZHENGQI (author) / YIN JIAYU (author) / WAN ZIHENG (author)
2023-06-23
Patent
Electronic Resource
Chinese
IPC:
C04B
Kalk
,
LIME
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