Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Functional gradient concrete for building 3D printing and 3D printing method
The invention discloses functional gradient concrete for building 3D printing and a 3D printing method. Preparing outer-layer 3D printing slurry from a cementing material, fly ash, silica fume, a composite expanding agent, quartz sand, a water reducing agent and water according to a certain proportion, and printing to obtain an outer-layer template; a binding material, fly ash, silica fume, a composite expanding agent, EPS particles and water are mixed according to a certain proportion to obtain heat preservation inner layer slurry, a heat preservation layer is printed in an outer layer formwork to obtain functional gradient concrete of a sandwich structure, and the composite expanding agent in a specific proportion is used for enhancing the binding force of the inner layer concrete and the outer layer concrete and the integrity of a gradient material. According to the invention, the use of a wood/steel template is avoided, the heat conductivity coefficient of the concrete is effectively reduced, the thermal insulation effect of the concrete is improved on the premise of keeping higher compressive strength, the interface bonding force between the inner layer and the outer layer is effectively improved, the integrity is good, and the outer layer slurry has better rheological property and can be used for additive manufacturing and rapid prototyping.
本发明公开了一种用于建筑3D打印的功能梯度混凝土及3D打印方法。将胶凝材料、粉煤灰、硅灰、复合膨胀剂、石英砂、减水剂和水按一定比例配置成外层3D打印浆料，用于打印得到外层模板。将胶凝材料、粉煤灰、硅灰、复合膨胀剂、EPS颗粒和水按一定比例混合配置得到保温内层浆料，在外层模板内打印保温层，得到夹芯结构的功能梯度混凝土，并且使用特定比例的复合膨胀剂来增强内外层混凝土的粘结力和梯度材料的整体性。本发明避免了木/钢模板的使用，有效降低了混凝土导热系数，在保持较高抗压强度前提下，提高了混凝土保温效果，并且内外层间的界面粘结力得到了有效提高，整体性好，且外层浆体具有较好的流变性能，能用于增材制造快速成型。
Functional gradient concrete for building 3D printing and 3D printing method
The invention discloses functional gradient concrete for building 3D printing and a 3D printing method. Preparing outer-layer 3D printing slurry from a cementing material, fly ash, silica fume, a composite expanding agent, quartz sand, a water reducing agent and water according to a certain proportion, and printing to obtain an outer-layer template; a binding material, fly ash, silica fume, a composite expanding agent, EPS particles and water are mixed according to a certain proportion to obtain heat preservation inner layer slurry, a heat preservation layer is printed in an outer layer formwork to obtain functional gradient concrete of a sandwich structure, and the composite expanding agent in a specific proportion is used for enhancing the binding force of the inner layer concrete and the outer layer concrete and the integrity of a gradient material. According to the invention, the use of a wood/steel template is avoided, the heat conductivity coefficient of the concrete is effectively reduced, the thermal insulation effect of the concrete is improved on the premise of keeping higher compressive strength, the interface bonding force between the inner layer and the outer layer is effectively improved, the integrity is good, and the outer layer slurry has better rheological property and can be used for additive manufacturing and rapid prototyping.
本发明公开了一种用于建筑3D打印的功能梯度混凝土及3D打印方法。将胶凝材料、粉煤灰、硅灰、复合膨胀剂、石英砂、减水剂和水按一定比例配置成外层3D打印浆料，用于打印得到外层模板。将胶凝材料、粉煤灰、硅灰、复合膨胀剂、EPS颗粒和水按一定比例混合配置得到保温内层浆料，在外层模板内打印保温层，得到夹芯结构的功能梯度混凝土，并且使用特定比例的复合膨胀剂来增强内外层混凝土的粘结力和梯度材料的整体性。本发明避免了木/钢模板的使用，有效降低了混凝土导热系数，在保持较高抗压强度前提下，提高了混凝土保温效果，并且内外层间的界面粘结力得到了有效提高，整体性好，且外层浆体具有较好的流变性能，能用于增材制造快速成型。
Functional gradient concrete for building 3D printing and 3D printing method
用于建筑3D打印的功能梯度混凝土及3D打印方法
YU QINGLIANG (Autor:in) / CHEN YUXUAN (Autor:in) / GAO HUAXING (Autor:in) / CHEN ZHENGRUI (Autor:in) / CHEN QIAN (Autor:in)
16.01.2024
Patent
Elektronische Ressource
Chinesisch
IPC:
C04B
Kalk
,
LIME
/
B28B
Formgeben von Ton oder anderen keramischen Stoffzusammensetzungen, Schlacke oder von Mischungen, die zementartiges Material enthalten, z.B. Putzmörtel
,
SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS, SLAG OR MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
/
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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