A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
3D printing concrete with adjustable rheological property, preparation method and printing process
The invention discloses 3D printing concrete capable of regulating and controlling rheological property, a preparation method and a printing process. The 3D printing concrete capable of regulating and controlling rheological property is prepared from the following components in percentage by mass: 20 to 25 percent of cement; 30%-40% of recycled coarse aggregate; 20%-30% of fine aggregate; 5%-12% of water; 2%-4% of fly ash; 1%-2% of silica fume; 2%-5% of an early strength agent; 0.02%-0.1% of fibers; 0.02% to 0.05% of cellulose ether; 0.1%-0.4% of a super plasticizer; 0.05%-0.1% of a viscosity modifier; and 0.01%-0.05% of a thickening agent. According to the method, the design thought of material optimization, parameter adjustment and overall improvement is adopted, the opening time of slurry printing is effectively prolonged, and the printability and constructability of a mixture are accurately regulated and controlled. The mechanical property and durability of the 3D printing recycled coarse aggregate concrete are improved, meanwhile, the recycled coarse aggregate replaces natural coarse aggregate, and the green and low-carbon development concept is met, so that the technology is suitable for practical engineering, and theoretical support is provided for popularization and development of the 3D printing recycled coarse aggregate.
本发明公开了一种可调控流变性的3D打印混凝土、制备方法及打印工艺，可调控流变性的3D打印混凝土由以下成分按质量百分含量组成：水泥20％～25％；再生粗骨料30％～40％；细骨料20％～30％；水5％～12％；粉煤灰2％～4％；硅灰1％～2％；早强剂2％～5％；纤维0.02％～0.1％；纤维素醚0.02％～0.05％；超级塑化剂0.1％～0.4％；粘度改性剂0.05％～0.1％；增稠剂0.01％～0.05％。本发明采取“材料优化‑调整参数‑整体提高”的设计思路，有效提高浆料打印的开放时间，实现精准调控拌合物可打印性和可建造性。使得3D打印再生粗骨料混凝土的力学性能和耐久性得到提高，同时再生粗骨料替代天然粗骨料符合绿色低碳的发展理念，因此该技术适用于实际工程，为3D打印再生粗骨料的推广发展提供了理论支撑。
3D printing concrete with adjustable rheological property, preparation method and printing process
The invention discloses 3D printing concrete capable of regulating and controlling rheological property, a preparation method and a printing process. The 3D printing concrete capable of regulating and controlling rheological property is prepared from the following components in percentage by mass: 20 to 25 percent of cement; 30%-40% of recycled coarse aggregate; 20%-30% of fine aggregate; 5%-12% of water; 2%-4% of fly ash; 1%-2% of silica fume; 2%-5% of an early strength agent; 0.02%-0.1% of fibers; 0.02% to 0.05% of cellulose ether; 0.1%-0.4% of a super plasticizer; 0.05%-0.1% of a viscosity modifier; and 0.01%-0.05% of a thickening agent. According to the method, the design thought of material optimization, parameter adjustment and overall improvement is adopted, the opening time of slurry printing is effectively prolonged, and the printability and constructability of a mixture are accurately regulated and controlled. The mechanical property and durability of the 3D printing recycled coarse aggregate concrete are improved, meanwhile, the recycled coarse aggregate replaces natural coarse aggregate, and the green and low-carbon development concept is met, so that the technology is suitable for practical engineering, and theoretical support is provided for popularization and development of the 3D printing recycled coarse aggregate.
本发明公开了一种可调控流变性的3D打印混凝土、制备方法及打印工艺，可调控流变性的3D打印混凝土由以下成分按质量百分含量组成：水泥20％～25％；再生粗骨料30％～40％；细骨料20％～30％；水5％～12％；粉煤灰2％～4％；硅灰1％～2％；早强剂2％～5％；纤维0.02％～0.1％；纤维素醚0.02％～0.05％；超级塑化剂0.1％～0.4％；粘度改性剂0.05％～0.1％；增稠剂0.01％～0.05％。本发明采取“材料优化‑调整参数‑整体提高”的设计思路，有效提高浆料打印的开放时间，实现精准调控拌合物可打印性和可建造性。使得3D打印再生粗骨料混凝土的力学性能和耐久性得到提高，同时再生粗骨料替代天然粗骨料符合绿色低碳的发展理念，因此该技术适用于实际工程，为3D打印再生粗骨料的推广发展提供了理论支撑。
3D printing concrete with adjustable rheological property, preparation method and printing process
一种可调控流变性的3D打印混凝土、制备方法及打印工艺
LIU CHAO (author) / YAO YIZHOU (author) / LIU HUAWEI (author) / WU YIWEN (author) / DING SHUMIN (author)
2022-07-29
Patent
Electronic Resource
Chinese
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
| European Patent Office | 2024
Synthesis of Hybridized Rheological Modifiers for 3D Concrete Printing
| Springer Verlag | 2020
3D printing additive of commercial concrete and preparation method of 3D printing concrete
| European Patent Office | 2024
3D printing concrete prepared from recycled aggregate and preparation method of 3D printing concrete
| European Patent Office | 2021