FIELD: construction materials.
SUBSTANCE: invention relates to the field of construction materials industry and can be used for the manufacture of building products and structures in additive manufacturing technology by layer-by-layer extrusion (3D printing) of a construction mixture. The modified construction mix for a 3D printer includes, wt. %: Portland cement containing, wt. %: tricalcium silicate 68.1, tricalcium aluminate 7.2, 20.0-23.0, quartz sand with a size modulus of 2.2-2.4 and a humidity of 1-2% 59.4-63.0, MasterRheobuild 183 superplasticizer based on naphthalene sulfonates 0.20-0.23, polysiloxane ether MasterPel 793 0.010-0.011, finely ground pozzolan component: a binary mixture of bio-silica with a hydraulic activity of at least 1400 mg/g, a grinding degree of at least 1100 m2/kg 2.0-2.3 and metakaolin with a hydraulic activity of at least 1200 mg /g, a grinding degree of at least 2000 m2/kg 2.0-2.3, water 12,759-12,790.
EFFECT: reduction in the consumption of Portland cement and superplasticizer in the construction mix, an increase in shape stability and ensuring the absence of defects in the form of ruptures of printed layers from the construction mix with the possibility of its extrusion on construction 3D printers implementing the method for layer–by-layer extrusion, a reduction in shrinkage deformations, water absorption and an increase in the bending strength of hardened composites printed on a 3D printer.
1 cl, 2 tbl
Title | Year | Author | Number |
---|---|---|---|
RAW MIXTURE FOR CONSTRUCTION 3D PRINTING | 2021 |
|
RU2782914C1 |
MODIFIED CONCRETE MIXTURE FOR 3D PRINTER EXTRUSION | 2021 |
|
RU2780512C1 |
CONCRETE MIXTURE BASED ON GYPSUM-CEMENT-POZZOLANIC BINDER FOR CONSTRUCTION 3D PRINTING | 2023 |
|
RU2821072C1 |
BUILDING MIXTURE FOR 3D PRINTER | 2021 |
|
RU2780315C1 |
MODIFIED GYPSUM-CEMENT-POZZOLANIC CONCRETE MIXTURE FOR 3D PRINTING | 2023 |
|
RU2821879C1 |
BUILDING RAW MIXTURE FOR 3D PRINTING | 2021 |
|
RU2773914C1 |
RAW MATERIAL MIXTURE FOR ADDITIVE CONSTRUCTION PRODUCTION | 2021 |
|
RU2781203C1 |
GYPSUM-CEMENT-POZZOLANIC CRUDE MIXTURE FOR EXTRUSION ON 3D PRINTER | 2023 |
|
RU2821079C1 |
CONSTRUCTION MIXTURE FOR 3D PRINTER | 2023 |
|
RU2819760C1 |
GYPSUM-CEMENT-POZZOLANIC CONSTRUCTION MIXTURE FOR 3D PRINTER | 2023 |
|
RU2820806C1 |
Authors
Dates
2022-10-11—Published
2021-12-30—Filed