A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
3D printing additive of commercial concrete and preparation method of 3D printing concrete
The invention discloses a 3D printing admixture of commercial concrete and a preparation method of 3D printing concrete.The 3D printing admixture is prepared from, by mass, 0.6-0.7 part of sulphoaluminate cement, 0.3-0.35 part of polycarboxylic acid admixture powder, 0.01-0.02 part of nanoscale SiO2 and 0.02-0.03 part of hydroxypropyl methyl cellulose, and the mixing amount of the 3D printing admixture accounts for 2.5 wt%-3 wt% of a cementing material of the commercial concrete; the polycarboxylic acid admixture powder comprises a first water reducing mother agent and a slump retaining mother agent, and the mass ratio of the first water reducing mother agent to the slump retaining mother agent is 1: 1. The problem that existing 3D printing concrete needs to be prepared by professional technicians in a prefabrication factory of a construction project application place or in-situ construction site is solved.
本发明公开了一种商品混凝土的3D打印外加剂及3D打印混凝土制备方法，包括0.6～0.7质量份的硫铝酸盐水泥、0.3～0.35质量份的聚羧酸外加剂粉剂、0.01～0.02质量份的纳米级SiO2、0.02～0.03质量份的羟丙基甲基纤维素，所述3D打印外加剂的掺量为所述商品混凝土的胶凝材料的2.5～3wt％，所述聚羧酸外加剂粉剂包括第一减水母剂和保坍母剂，所述第一减水母剂与所述保坍母剂的质量比为1：1。本发明解决了现有的3D打印混凝土需要专业技术人员前往建筑项目应用地的预制工厂或者原位施工现场配制的问题。
3D printing additive of commercial concrete and preparation method of 3D printing concrete
The invention discloses a 3D printing admixture of commercial concrete and a preparation method of 3D printing concrete.The 3D printing admixture is prepared from, by mass, 0.6-0.7 part of sulphoaluminate cement, 0.3-0.35 part of polycarboxylic acid admixture powder, 0.01-0.02 part of nanoscale SiO2 and 0.02-0.03 part of hydroxypropyl methyl cellulose, and the mixing amount of the 3D printing admixture accounts for 2.5 wt%-3 wt% of a cementing material of the commercial concrete; the polycarboxylic acid admixture powder comprises a first water reducing mother agent and a slump retaining mother agent, and the mass ratio of the first water reducing mother agent to the slump retaining mother agent is 1: 1. The problem that existing 3D printing concrete needs to be prepared by professional technicians in a prefabrication factory of a construction project application place or in-situ construction site is solved.
本发明公开了一种商品混凝土的3D打印外加剂及3D打印混凝土制备方法，包括0.6～0.7质量份的硫铝酸盐水泥、0.3～0.35质量份的聚羧酸外加剂粉剂、0.01～0.02质量份的纳米级SiO2、0.02～0.03质量份的羟丙基甲基纤维素，所述3D打印外加剂的掺量为所述商品混凝土的胶凝材料的2.5～3wt％，所述聚羧酸外加剂粉剂包括第一减水母剂和保坍母剂，所述第一减水母剂与所述保坍母剂的质量比为1：1。本发明解决了现有的3D打印混凝土需要专业技术人员前往建筑项目应用地的预制工厂或者原位施工现场配制的问题。
3D printing additive of commercial concrete and preparation method of 3D printing concrete
商品混凝土的3D打印外加剂及3D打印混凝土制备方法
CHEN YANG (author) / MA MINGLEI (author) / BAI JIE (author) / CHEN LI (author) / FENG MINGYANG (author) / HAN LIFANG (author) / GUI QIANG (author) / YANG YAN (author)
2024-10-11
Patent
Electronic Resource
Chinese
IPC:
C04B
Kalk
,
LIME
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