Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
3D printing concrete for improving dimensional precision of printing component and preparation method
The invention discloses 3D printing concrete for improving the dimensional precision of a printing component and a preparation method. The concrete comprises the following components in parts by weight: 560-1000 parts of cement; 50-89 parts of steel slag powder; 190 to 349 parts of polyacrylic acid modified brick powder; 870 to 1554 parts of natural sand; 0-1.28 parts of a dry powder water reducing agent; and 240 to 429 parts of water. The preparation method comprises the following steps: weighing the cement, the steel slag powder, the polyacrylic acid modified brick powder, the natural sand and the dry powder water reducing agent according to the proportion, and uniformly stirring to obtain a mixed dry material; weighing 60% of required water according to the proportion, adding the water into the mixed dry material, uniformly stirring, adding the rest 40% of water, and continuously stirring to obtain the 3D printing concrete. According to the invention, the characteristics of the brick powder can be changed, and the problem of non-uniform doping when sodium polyacrylate is used as an additive is avoided; the thixotropy and the water-retaining property of the concrete can be improved, and the printing quality of the concrete is improved; the window printing time can be prolonged, and the printing process is more flexible and stable.
本发明公开了一种提高打印构件尺寸精度的3D打印混凝土及制备方法。所述混凝土按重量份计，包括：水泥560～1000份；钢渣粉50～89份；聚丙烯酸改性砖粉190～349份；天然砂870～1554份；干粉态减水剂0～1.28份；水240～429份。制备方法包括按配比称取水泥、钢渣粉、聚丙烯酸改性砖粉、天然砂和干粉态减水剂，搅拌均匀得到混合干料；按配比称取所需用水的60%加入混合干料中搅拌均匀，再将剩余的40%的水加入，继续搅拌得到3D打印混凝土。本发明能够改变砖粉特性，避免聚丙烯酸钠作为外加剂时掺入不均匀的问题；能够增加混凝土的触变性和保水性，提高混凝土的打印质量；能够延长打印窗口时间，使得打印过程更为灵活和稳定。
3D printing concrete for improving dimensional precision of printing component and preparation method
The invention discloses 3D printing concrete for improving the dimensional precision of a printing component and a preparation method. The concrete comprises the following components in parts by weight: 560-1000 parts of cement; 50-89 parts of steel slag powder; 190 to 349 parts of polyacrylic acid modified brick powder; 870 to 1554 parts of natural sand; 0-1.28 parts of a dry powder water reducing agent; and 240 to 429 parts of water. The preparation method comprises the following steps: weighing the cement, the steel slag powder, the polyacrylic acid modified brick powder, the natural sand and the dry powder water reducing agent according to the proportion, and uniformly stirring to obtain a mixed dry material; weighing 60% of required water according to the proportion, adding the water into the mixed dry material, uniformly stirring, adding the rest 40% of water, and continuously stirring to obtain the 3D printing concrete. According to the invention, the characteristics of the brick powder can be changed, and the problem of non-uniform doping when sodium polyacrylate is used as an additive is avoided; the thixotropy and the water-retaining property of the concrete can be improved, and the printing quality of the concrete is improved; the window printing time can be prolonged, and the printing process is more flexible and stable.
本发明公开了一种提高打印构件尺寸精度的3D打印混凝土及制备方法。所述混凝土按重量份计，包括：水泥560～1000份；钢渣粉50～89份；聚丙烯酸改性砖粉190～349份；天然砂870～1554份；干粉态减水剂0～1.28份；水240～429份。制备方法包括按配比称取水泥、钢渣粉、聚丙烯酸改性砖粉、天然砂和干粉态减水剂，搅拌均匀得到混合干料；按配比称取所需用水的60%加入混合干料中搅拌均匀，再将剩余的40%的水加入，继续搅拌得到3D打印混凝土。本发明能够改变砖粉特性，避免聚丙烯酸钠作为外加剂时掺入不均匀的问题；能够增加混凝土的触变性和保水性，提高混凝土的打印质量；能够延长打印窗口时间，使得打印过程更为灵活和稳定。
3D printing concrete for improving dimensional precision of printing component and preparation method
一种提高打印构件尺寸精度的3D打印混凝土及制备方法
ZHANG YAMEI (Autor:in) / JIANG YIFAN (Autor:in) / JIA LUTAO (Autor:in)
26.07.2024
Patent
Elektronische Ressource
Chinesisch
IPC:
C04B
Kalk
,
LIME
/
B33Y
ADDITIVE MANUFACTURING, i.e. MANUFACTURING OF THREE-DIMENSIONAL [3D] OBJECTS BY ADDITIVE DEPOSITION, ADDITIVE AGGLOMERATION OR ADDITIVE LAYERING, e.g. BY 3D PRINTING, STEREOLITHOGRAPHY OR SELECTIVE LASER SINTERING
,
Additive (generative) Fertigung, d. h. die Herstellung von dreidimensionalen [3D] Bauteilen durch additive Abscheidung, additive Agglomeration oder additive Schichtung, z. B. durch 3D- Drucken, Stereolithografie oder selektives Lasersintern
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