Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Preparation process of coal gangue aggregate 3D printing concrete material
The invention discloses a preparation process of a coal gangue aggregate 3D printing concrete material, which comprises the following steps: (1) immersing coal gangue fine aggregate which is calcined to remove organic matters into a saturated aluminum sulfate solution, standing, separating out the fine aggregate, drying, immersing into absolute ethyl alcohol containing saturated tetraethoxysilane, and standing; and separating out the fine aggregate and drying the fine aggregate to obtain the coal gangue fine aggregate a. And (2) spraying saturated lime water into the coal gangue fine aggregate a under a stirring condition, carrying out heating and heat preservation on the formed wet material in a closed container, and carrying out calcination treatment after the reaction is completed, so as to obtain the modified coal gangue fine aggregate. And (3) uniformly mixing Portland cement, the modified coal gangue fine aggregate, the coarse aggregate, the admixture, the water reducing agent and the chopped fibers, adding water, and uniformly stirring to obtain the 3D printing concrete material. The process provided by the invention not only relieves the adverse effect of calcined coal gangue on the fluidity of the 3D printing concrete material, but also improves the strength of the prepared concrete structure.
本发明公开一种煤矸石骨料3D打印混凝土材料的制备工艺，包括如下步骤：（1）将煅烧去除有机质的煤矸石细骨料浸入饱和硫酸铝溶液中，静置后分离出所述细骨料，烘干后浸入含有饱和正硅酸乙酯的无水乙醇中静置。完成后分离出所述细骨料干燥，得到煤矸石细骨料a。（2）在搅拌条件下向所述煤矸石细骨料a中喷洒饱和石灰水，将形成的湿料在密闭容器加热保温，反应完成后进行煅烧处理，得改性煤矸石细骨料。（3）将硅酸盐水泥、改性煤矸石细骨料、粗骨料、掺合料、减水剂、短切纤维混匀后加水拌和均匀，即得所述3D打印混凝土材料。本发明的工艺不仅缓解了煅烧煤矸石对3D打印混凝土材料流动性的不利影响，而且改善了制备的混凝土结构的强度。
Preparation process of coal gangue aggregate 3D printing concrete material
The invention discloses a preparation process of a coal gangue aggregate 3D printing concrete material, which comprises the following steps: (1) immersing coal gangue fine aggregate which is calcined to remove organic matters into a saturated aluminum sulfate solution, standing, separating out the fine aggregate, drying, immersing into absolute ethyl alcohol containing saturated tetraethoxysilane, and standing; and separating out the fine aggregate and drying the fine aggregate to obtain the coal gangue fine aggregate a. And (2) spraying saturated lime water into the coal gangue fine aggregate a under a stirring condition, carrying out heating and heat preservation on the formed wet material in a closed container, and carrying out calcination treatment after the reaction is completed, so as to obtain the modified coal gangue fine aggregate. And (3) uniformly mixing Portland cement, the modified coal gangue fine aggregate, the coarse aggregate, the admixture, the water reducing agent and the chopped fibers, adding water, and uniformly stirring to obtain the 3D printing concrete material. The process provided by the invention not only relieves the adverse effect of calcined coal gangue on the fluidity of the 3D printing concrete material, but also improves the strength of the prepared concrete structure.
本发明公开一种煤矸石骨料3D打印混凝土材料的制备工艺，包括如下步骤：（1）将煅烧去除有机质的煤矸石细骨料浸入饱和硫酸铝溶液中，静置后分离出所述细骨料，烘干后浸入含有饱和正硅酸乙酯的无水乙醇中静置。完成后分离出所述细骨料干燥，得到煤矸石细骨料a。（2）在搅拌条件下向所述煤矸石细骨料a中喷洒饱和石灰水，将形成的湿料在密闭容器加热保温，反应完成后进行煅烧处理，得改性煤矸石细骨料。（3）将硅酸盐水泥、改性煤矸石细骨料、粗骨料、掺合料、减水剂、短切纤维混匀后加水拌和均匀，即得所述3D打印混凝土材料。本发明的工艺不仅缓解了煅烧煤矸石对3D打印混凝土材料流动性的不利影响，而且改善了制备的混凝土结构的强度。
Preparation process of coal gangue aggregate 3D printing concrete material
一种煤矸石骨料3D打印混凝土材料的制备工艺
CHEN YIDONG (Autor:in) / ZHANG YUNSHENG (Autor:in) / PANG BO (Autor:in) / LIU CHENG (Autor:in) / LIU ZHIYONG (Autor:in) / WANG DAFU (Autor:in) / WU MENG (Autor:in) / CHEN MINGXU (Autor:in)
17.12.2024
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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