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A platform for research: civil engineering, architecture and urbanism
High-thixotropy 3D printing concrete with long opening time and preparation method thereof
The invention discloses high-thixotropy 3D printing concrete with long opening time and a preparation method of the high-thixotropy 3D printing concrete. The high-thixotropy 3D printing concrete is prepared from 300-500 parts of a Portland cement component, 300-750 parts of an inorganic filler component, 0.5-1.5 parts of a fiber component, 0.5-3 parts of an ester group modified polyacrylic acid thickener, 0.5-5 parts of a macromolecular side chain acrylic polymer, 0.5-3 parts of diethylenetriamine pentaacetic acid, 50-100 parts of fulvic acid modified tailing slag powder and 90-150 parts of tap water. The tailing slag powder subjected to grinding and fulvic acid etching modification is high in reaction activity, large in specific surface area and low in harmful metal ion content, the concrete strength can be enhanced, and the concrete is endowed with good thixotropy and water retention. The compatibility of the acrylic polymer with larger side chain molecules, the diethylenetriamine pentaacetic acid and the ester-modified polyacrylic acid thickener is good. The prepared concrete is high in thixotropy and long in opening time, continuous construction of large-scale 3D printing engineering is facilitated, tailing slag is subjected to resource utilization, and the concrete is more environmentally friendly.
本发明公开了一种开放时间长的高触变性3D打印混凝土及其制备方法，包括硅酸盐水泥组分300～500份、无机填料组分300～750份、纤维组分0.5～1.5份、酯基改性聚丙烯酸类增稠剂0.5～3份、大分子侧链丙烯酸聚合物0.5～5份、二乙三胺五乙酸0.5～3份、富里酸改性尾矿渣粉末50～100份、自来水90～150份。经过粉磨和富里酸刻蚀改性的尾矿渣粉末反应活性高、比表面积大、有害金属离子含量少，能够增强混凝土强度、赋予混凝土良好的触变性和保水性。侧链分子较大的丙烯酸聚合物、二乙三胺五乙酸、酯基改性聚丙烯酸类增稠剂相容性好。制备的混凝土触变性高、开放时间长，有利于大型3D打印工程的持续施工，并将尾矿渣进行资源化利用，更加环保。
High-thixotropy 3D printing concrete with long opening time and preparation method thereof
The invention discloses high-thixotropy 3D printing concrete with long opening time and a preparation method of the high-thixotropy 3D printing concrete. The high-thixotropy 3D printing concrete is prepared from 300-500 parts of a Portland cement component, 300-750 parts of an inorganic filler component, 0.5-1.5 parts of a fiber component, 0.5-3 parts of an ester group modified polyacrylic acid thickener, 0.5-5 parts of a macromolecular side chain acrylic polymer, 0.5-3 parts of diethylenetriamine pentaacetic acid, 50-100 parts of fulvic acid modified tailing slag powder and 90-150 parts of tap water. The tailing slag powder subjected to grinding and fulvic acid etching modification is high in reaction activity, large in specific surface area and low in harmful metal ion content, the concrete strength can be enhanced, and the concrete is endowed with good thixotropy and water retention. The compatibility of the acrylic polymer with larger side chain molecules, the diethylenetriamine pentaacetic acid and the ester-modified polyacrylic acid thickener is good. The prepared concrete is high in thixotropy and long in opening time, continuous construction of large-scale 3D printing engineering is facilitated, tailing slag is subjected to resource utilization, and the concrete is more environmentally friendly.
本发明公开了一种开放时间长的高触变性3D打印混凝土及其制备方法，包括硅酸盐水泥组分300～500份、无机填料组分300～750份、纤维组分0.5～1.5份、酯基改性聚丙烯酸类增稠剂0.5～3份、大分子侧链丙烯酸聚合物0.5～5份、二乙三胺五乙酸0.5～3份、富里酸改性尾矿渣粉末50～100份、自来水90～150份。经过粉磨和富里酸刻蚀改性的尾矿渣粉末反应活性高、比表面积大、有害金属离子含量少，能够增强混凝土强度、赋予混凝土良好的触变性和保水性。侧链分子较大的丙烯酸聚合物、二乙三胺五乙酸、酯基改性聚丙烯酸类增稠剂相容性好。制备的混凝土触变性高、开放时间长，有利于大型3D打印工程的持续施工，并将尾矿渣进行资源化利用，更加环保。
High-thixotropy 3D printing concrete with long opening time and preparation method thereof
一种开放时间长的高触变性3D打印混凝土及其制备方法
ZHANG YAMEI (author) / WANG ZHIBIN (author) / ZHANG CHAO (author)
2022-07-26
Patent
Electronic Resource
Chinese
IPC:
C04B
Kalk
,
LIME
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