A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Pumpable 3D printing concrete and preparation method thereof
The invention relates to the technical field of chemical building materials, in particular to pumpable 3D printing concrete and a preparation method thereof. The pumpable 3D printing concrete comprises the following components in parts by weight: 90-120 parts of cement; 5 to 10 parts of sulphoaluminate cement; 5-10 parts of silica fume; 130 to 150 parts of composite fine aggregate; 5-8 parts of a water reducing agent; 2-6 parts of rubber powder; 1-3 parts of cellulose ether; and 2-6 parts of fiber. According to the invention, by doping the specific composite fine aggregate and matching with the specially designed mixing ratio, the volume weight of the 3D printing concrete can be reduced, so that the pressure borne by the printed lower-layer line is reduced, and the printed lower-layer line is not easy to flatten; the fluidity of the 3D printing concrete is reduced, and when the material is used, the water consumption is not required to be reduced, so that the consistency of the material is increased, and a mixture capable of passing through a pump pipe is obtained; as the fluidity of the raw materials is reduced, more water can be added in the proportioning to soften the material, and the quick-setting component is reduced, so that the later repair time of the material is longer.
本发明涉及化工建筑材料技术领域，特别涉及一种可泵送3D打印混凝土及其制备方法。可泵送3D打印混凝土，按照重量份计算包括：水泥90‑120份；硫铝酸盐水泥5‑10份；硅灰5‑10份；复合细骨料130‑150份；减水剂5‑8份；胶粉2‑6份；纤维素醚1‑3份；纤维2‑6份。本发明借助掺入特定的复合细骨料，搭配特殊设计的配合比使用，呢个够降低3D打印混凝土的容重，使打印的下层线条承受的压力变小，不容易被压扁；降低3D打印混凝土的流动性，材料使用时不再需要压低用水量，导致材料稠度变大，从而得到能通过泵管的拌合物；由于从原材料上降低了流动性，配比中能加入更多的水使材料变软、降低速凝组分让材料能接受后期修补的时间更长。
Pumpable 3D printing concrete and preparation method thereof
The invention relates to the technical field of chemical building materials, in particular to pumpable 3D printing concrete and a preparation method thereof. The pumpable 3D printing concrete comprises the following components in parts by weight: 90-120 parts of cement; 5 to 10 parts of sulphoaluminate cement; 5-10 parts of silica fume; 130 to 150 parts of composite fine aggregate; 5-8 parts of a water reducing agent; 2-6 parts of rubber powder; 1-3 parts of cellulose ether; and 2-6 parts of fiber. According to the invention, by doping the specific composite fine aggregate and matching with the specially designed mixing ratio, the volume weight of the 3D printing concrete can be reduced, so that the pressure borne by the printed lower-layer line is reduced, and the printed lower-layer line is not easy to flatten; the fluidity of the 3D printing concrete is reduced, and when the material is used, the water consumption is not required to be reduced, so that the consistency of the material is increased, and a mixture capable of passing through a pump pipe is obtained; as the fluidity of the raw materials is reduced, more water can be added in the proportioning to soften the material, and the quick-setting component is reduced, so that the later repair time of the material is longer.
本发明涉及化工建筑材料技术领域，特别涉及一种可泵送3D打印混凝土及其制备方法。可泵送3D打印混凝土，按照重量份计算包括：水泥90‑120份；硫铝酸盐水泥5‑10份；硅灰5‑10份；复合细骨料130‑150份；减水剂5‑8份；胶粉2‑6份；纤维素醚1‑3份；纤维2‑6份。本发明借助掺入特定的复合细骨料，搭配特殊设计的配合比使用，呢个够降低3D打印混凝土的容重，使打印的下层线条承受的压力变小，不容易被压扁；降低3D打印混凝土的流动性，材料使用时不再需要压低用水量，导致材料稠度变大，从而得到能通过泵管的拌合物；由于从原材料上降低了流动性，配比中能加入更多的水使材料变软、降低速凝组分让材料能接受后期修补的时间更长。
Pumpable 3D printing concrete and preparation method thereof
一种可泵送3D打印混凝土及其制备方法
XUE BOYU (author) / YIN JIANLI (author) / GUO YUANQIANG (author) / LIN TIANXING (author) / LAI GUANGXING (author) / XIAO WEI (author) / LIU ZHIYAN (author) / YE JUNHUI (author) / MA SHILONG (author) / JIANG YAFEI (author)
2023-02-24
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
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