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A platform for research: civil engineering, architecture and urbanism
Low-carbon internal curing lightweight concrete for 3D printing and preparation method thereof
The invention discloses low-carbon internal curing lightweight concrete for 3D (three-dimensional) printing. The concrete is prepared from 100-200 parts of ground coal gangue powder, 100-150 parts of ground steel slag powder, 10-30 parts of desulfurized gypsum powder, 100-200 parts of slag powder, 0-665 parts of fine sand, 270-600 parts of lightweight aggregate, 10-70 parts of a sodium hydroxide solution, 15-50 parts of a sodium silicate solution, 6-8 parts of nano silicon dioxide, 3-4 parts of a thickening agent, 2-4 parts of a shrinkage reducing agent and 260-350 parts of water. The preparation method comprises the following steps: dissolving the shrinkage reducing agent in the mixing water, adding the lightweight aggregate, standing, absorbing water, and draining; dissolving a sodium hydroxide solution and a sodium silicate solution in the remaining mixing water, adding composite powder formed by mixing coal gangue powder, steel slag powder, desulfurized gypsum and slag, stirring to form viscous slurry, adding the pre-wetted lightweight aggregate, uniformly mixing, adding a thickening agent and fine sand, and stirring to obtain a product. The invention has the advantages of low self-weight, small shrinkage, massive use of industrial wastes, and environmental protection.
本发明公开了一种用于3D打印的低碳内养护轻质混凝土，由以下质量份组成，磨细煤矸石粉100‑200份、磨细钢渣粉100‑150份、脱硫石膏粉10‑30份、矿渣粉100‑200份、细砂0‑665份、轻骨料270‑600份、氢氧化钠溶液10‑70份、硅酸钠溶液15‑50份、纳米二氧化硅6‑8份、增稠剂3‑4份、减缩剂2‑4份、水260‑350份。制备方法为：将减缩剂溶于拌合水后，加入轻骨料静置吸水之后沥干；将氢氧化钠溶液和硅酸钠溶液溶于剩余的拌合水中，加入煤矸石粉、钢渣粉、脱硫石膏、矿渣混合形成的复合粉体，搅拌形成粘性浆体，加入预湿轻骨料，混合均匀后加入增稠剂和细砂，搅拌制得产物。本发明自重低、收缩小，且大量使用工业废弃物，有利于环保。
Low-carbon internal curing lightweight concrete for 3D printing and preparation method thereof
The invention discloses low-carbon internal curing lightweight concrete for 3D (three-dimensional) printing. The concrete is prepared from 100-200 parts of ground coal gangue powder, 100-150 parts of ground steel slag powder, 10-30 parts of desulfurized gypsum powder, 100-200 parts of slag powder, 0-665 parts of fine sand, 270-600 parts of lightweight aggregate, 10-70 parts of a sodium hydroxide solution, 15-50 parts of a sodium silicate solution, 6-8 parts of nano silicon dioxide, 3-4 parts of a thickening agent, 2-4 parts of a shrinkage reducing agent and 260-350 parts of water. The preparation method comprises the following steps: dissolving the shrinkage reducing agent in the mixing water, adding the lightweight aggregate, standing, absorbing water, and draining; dissolving a sodium hydroxide solution and a sodium silicate solution in the remaining mixing water, adding composite powder formed by mixing coal gangue powder, steel slag powder, desulfurized gypsum and slag, stirring to form viscous slurry, adding the pre-wetted lightweight aggregate, uniformly mixing, adding a thickening agent and fine sand, and stirring to obtain a product. The invention has the advantages of low self-weight, small shrinkage, massive use of industrial wastes, and environmental protection.
本发明公开了一种用于3D打印的低碳内养护轻质混凝土，由以下质量份组成，磨细煤矸石粉100‑200份、磨细钢渣粉100‑150份、脱硫石膏粉10‑30份、矿渣粉100‑200份、细砂0‑665份、轻骨料270‑600份、氢氧化钠溶液10‑70份、硅酸钠溶液15‑50份、纳米二氧化硅6‑8份、增稠剂3‑4份、减缩剂2‑4份、水260‑350份。制备方法为：将减缩剂溶于拌合水后，加入轻骨料静置吸水之后沥干；将氢氧化钠溶液和硅酸钠溶液溶于剩余的拌合水中，加入煤矸石粉、钢渣粉、脱硫石膏、矿渣混合形成的复合粉体，搅拌形成粘性浆体，加入预湿轻骨料，混合均匀后加入增稠剂和细砂，搅拌制得产物。本发明自重低、收缩小，且大量使用工业废弃物，有利于环保。
Low-carbon internal curing lightweight concrete for 3D printing and preparation method thereof
一种用于3D打印的低碳内养护轻质混凝土及其制备方法
ZHANG YAMEI (author) / DENG ZHICONG (author) / ZHANG CHAO (author) / FANG YICHENG (author)
2022-06-07
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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