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Waste alkali-activated slag modified regenerated micro powder as well as preparation method and application thereof
The invention discloses waste alkali-activated slag modified regenerated micro powder as well as a preparation method and application thereof. The preparation process of the modified regenerated micro powder comprises the following steps: crushing and drying a waste alkali-activated slag test block, and grinding to obtain precursor powder; and dispersing the precursor powder and a surfactant in water to obtain a suspension, and then sequentially performing carbonization, suction filtration and drying to obtain the composite material. According to the modified regenerated micro powder, waste alkali-activated slag is used as a raw material, under the synergistic effect of a surfactant and a wet carbonization treatment process, on one hand, the reaction activity of a system can be greatly improved, on the other hand, the carbonization efficiency of the regenerated micro powder can be improved, and utilization and storage of carbon dioxide are achieved. A neat paste test block prepared by using the modified regenerated micro powder as an auxiliary cementing material has excellent mechanical properties. Tests show that when the doping amount of the modified regenerated micro powder is 30%, the compressive strength of the obtained neat paste test block in 28 days can reach 63 MPa, which is far higher than that of a pure cement neat paste test block.
本发明公开了一种废弃碱激发矿渣改性再生微粉及其制备方法和应用。该改性再生微粉的制备过程为：废弃的碱激发矿渣试块破碎烘干后研磨获得前驱体粉末；将前驱体粉末和表面活性剂分散于水中得悬浮液，再依次经碳化、抽滤和烘干，即得。该改性再生微粉以废弃的碱激发矿渣为原料，在表面活性剂与湿法碳化处理工艺的协同作用下，一方面可以大幅提高体系的反应活性，另一方面还可以提高再生微粉的碳化效率，实现二氧化碳的利用和封存。利用该改性再生微粉作为辅助胶凝材料制备的净浆试块具有优异的力学性能。经测试，当改性再生微粉掺量在30％时，所得净浆试块在28天的抗压强度可达63MPa，远高于纯水泥净浆试块。
Waste alkali-activated slag modified regenerated micro powder as well as preparation method and application thereof
The invention discloses waste alkali-activated slag modified regenerated micro powder as well as a preparation method and application thereof. The preparation process of the modified regenerated micro powder comprises the following steps: crushing and drying a waste alkali-activated slag test block, and grinding to obtain precursor powder; and dispersing the precursor powder and a surfactant in water to obtain a suspension, and then sequentially performing carbonization, suction filtration and drying to obtain the composite material. According to the modified regenerated micro powder, waste alkali-activated slag is used as a raw material, under the synergistic effect of a surfactant and a wet carbonization treatment process, on one hand, the reaction activity of a system can be greatly improved, on the other hand, the carbonization efficiency of the regenerated micro powder can be improved, and utilization and storage of carbon dioxide are achieved. A neat paste test block prepared by using the modified regenerated micro powder as an auxiliary cementing material has excellent mechanical properties. Tests show that when the doping amount of the modified regenerated micro powder is 30%, the compressive strength of the obtained neat paste test block in 28 days can reach 63 MPa, which is far higher than that of a pure cement neat paste test block.
本发明公开了一种废弃碱激发矿渣改性再生微粉及其制备方法和应用。该改性再生微粉的制备过程为：废弃的碱激发矿渣试块破碎烘干后研磨获得前驱体粉末；将前驱体粉末和表面活性剂分散于水中得悬浮液，再依次经碳化、抽滤和烘干，即得。该改性再生微粉以废弃的碱激发矿渣为原料，在表面活性剂与湿法碳化处理工艺的协同作用下，一方面可以大幅提高体系的反应活性，另一方面还可以提高再生微粉的碳化效率，实现二氧化碳的利用和封存。利用该改性再生微粉作为辅助胶凝材料制备的净浆试块具有优异的力学性能。经测试，当改性再生微粉掺量在30％时，所得净浆试块在28天的抗压强度可达63MPa，远高于纯水泥净浆试块。
Waste alkali-activated slag modified regenerated micro powder as well as preparation method and application thereof
一种废弃碱激发矿渣改性再生微粉及其制备方法和应用
LIU BAOJU (author) / CHEN BINGJIANG (author) / YE HUIWEN (author) / SU CHUNLIN (author) / LIANG YAJUN (author) / ZHANG YAQING (author)
2024-10-15
Patent
Electronic Resource
Chinese
IPC:
C04B
Kalk
,
LIME
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