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Preparation method and application of nanoscale composite reinforcing material
The invention discloses a preparation method of a nanoscale composite reinforcing material which comprises the following raw materials in parts by weight: 25-45 parts of superfine fly ash, 3-5 parts of modified sodium humate, 0.1-0.5 part of hydroxylated graphene oxide, 0.5-2 parts of nano SO2 and 6-10 parts of slaked lime. The preparation method comprises the following steps: S1, preparing sodium humate from humic acid, and then carrying out graft copolymerization on the sodium humate and acrylamide to prepare modified sodium humate; s2, preparing graphene oxide through a Hummers method, and reacting the graphene oxide with glycerol to prepare hydroxylated graphene oxide; s3, the raw materials are added into a mixing machine according to the proportion to be stirred and mixed to be uniform, and the nanoscale composite reinforcing material is obtained. The superfine fly ash is compounded with the modified sodium humate and the hydroxylated graphene oxide, the superfine fly ash is subjected to alkali excitation through the slaked lime, nano SO2 is added for reinforcement, and the grouting material prepared from the nanoscale composite reinforcing material is good in early flowing property and high in compressive strength after solidification.
本发明公开了一种纳米级复合加固材料的制备方法，纳米级复合加固材料包括以下重量份原料：超细粉煤灰25~45份、改性腐殖酸钠3~5份、羟基化氧化石墨烯0.1~0.5份、纳米SO2 0.5~2份、熟石灰6~10份，其制备方法包括以下步骤：S1、通过腐殖酸制备腐殖酸钠后与丙烯酰胺接枝共聚，制备改性腐殖酸钠；S2、通过Hummers法制备氧化石墨烯，并将氧化石墨烯与甘油反应，制备羟基化氧化石墨烯；S3、将各原料按比例加入混合机中搅拌混合均匀，得到所述纳米级复合加固材料；本发明采用超细粉煤灰与改性腐殖酸钠、羟基化氧化石墨烯复配，通过熟石灰碱激发超细粉煤灰，并添加纳米SO2增强，采用纳米级复合加固材料制备的注浆料，早期流动性能良好，凝固后抗压强度高。
Preparation method and application of nanoscale composite reinforcing material
The invention discloses a preparation method of a nanoscale composite reinforcing material which comprises the following raw materials in parts by weight: 25-45 parts of superfine fly ash, 3-5 parts of modified sodium humate, 0.1-0.5 part of hydroxylated graphene oxide, 0.5-2 parts of nano SO2 and 6-10 parts of slaked lime. The preparation method comprises the following steps: S1, preparing sodium humate from humic acid, and then carrying out graft copolymerization on the sodium humate and acrylamide to prepare modified sodium humate; s2, preparing graphene oxide through a Hummers method, and reacting the graphene oxide with glycerol to prepare hydroxylated graphene oxide; s3, the raw materials are added into a mixing machine according to the proportion to be stirred and mixed to be uniform, and the nanoscale composite reinforcing material is obtained. The superfine fly ash is compounded with the modified sodium humate and the hydroxylated graphene oxide, the superfine fly ash is subjected to alkali excitation through the slaked lime, nano SO2 is added for reinforcement, and the grouting material prepared from the nanoscale composite reinforcing material is good in early flowing property and high in compressive strength after solidification.
本发明公开了一种纳米级复合加固材料的制备方法，纳米级复合加固材料包括以下重量份原料：超细粉煤灰25~45份、改性腐殖酸钠3~5份、羟基化氧化石墨烯0.1~0.5份、纳米SO2 0.5~2份、熟石灰6~10份，其制备方法包括以下步骤：S1、通过腐殖酸制备腐殖酸钠后与丙烯酰胺接枝共聚，制备改性腐殖酸钠；S2、通过Hummers法制备氧化石墨烯，并将氧化石墨烯与甘油反应，制备羟基化氧化石墨烯；S3、将各原料按比例加入混合机中搅拌混合均匀，得到所述纳米级复合加固材料；本发明采用超细粉煤灰与改性腐殖酸钠、羟基化氧化石墨烯复配，通过熟石灰碱激发超细粉煤灰，并添加纳米SO2增强，采用纳米级复合加固材料制备的注浆料，早期流动性能良好，凝固后抗压强度高。
Preparation method and application of nanoscale composite reinforcing material
一种纳米级复合加固材料的制备方法与应用
MO WEIYONG (author)
2023-09-19
Patent
Electronic Resource
Chinese
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