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3D printing concrete material added with macadam coarse aggregate and preparation method of 3D printing concrete material
The invention discloses a 3D printing concrete material added with macadam coarse aggregate and a preparation method of the 3D printing concrete material. The 3D printing concrete material comprises the following components: 14.6%-29.5% of coarse aggregate, 28.3%-41.7% of fine aggregate, 11.9%-28.9% of cement, 0-11.7% of fly ash or slag powder, 5.3%-11.9% of silica fume, 0-0.65% of micron-scale fibers, 0-2.10% of millimeter-scale fibers, 0.30%-0.53% of a water reducer, 0-1.86% of an accelerating agent and 7.7%-11.9% of water, wherein the cement, the fly ash or the slag powder and the silica fume jointly form a gelling component of the concrete, and the gelling component accounts for 26.6%-38.9% of the concrete in percentage by weight; and the sum of the weight of the millimeter-scale fibers and the weight of the micron-scale fibers is 0.51%-2.10% of the weight of the concrete according to the weight percentage of the concrete. According to the prepared 3D printing concrete material added with the coarse aggregate, by optimizing the coarse aggregate and the types, the performance parameters and the mixing amount of all the raw materials, the 3D printing requirement can be met, and the surface roughness of the product is reduced.
本发明公开了一种添加碎石粗骨料的3D打印混凝土材料及其制备方法，所述3D打印混凝土材料，按照重量百分数计，包括以下各组分：粗骨料14.6％～29.5％、细骨料28.3％～41.7％、水泥11.9％～28.9％、粉煤灰或矿渣粉0～11.7％、硅灰5.3％～11.9％、微米级纤维0～0.65％、毫米级纤维0～2.10％、减水剂0.30％～0.53％、速凝剂0～1.86％、水7.7％～11.9％；所述水泥、粉煤灰或矿渣粉、硅灰共同组成混凝土的胶凝组分，胶凝组分按照混凝土重量百分数计，占26.6％～38.9％；所述微米级纤维和毫米级纤维按照混凝土重量百分数计，毫米级纤维重量与3倍的微米级纤维重量的和占混凝土重量的0.51％～2.10％。本发明制备的添加粗骨料的3D打印混凝土材料，通过优选粗骨料以及各原材料种类、性能参数和掺量，不仅能够满足3D打印的要求，而且降低了产品的表面粗糙度。
3D printing concrete material added with macadam coarse aggregate and preparation method of 3D printing concrete material
The invention discloses a 3D printing concrete material added with macadam coarse aggregate and a preparation method of the 3D printing concrete material. The 3D printing concrete material comprises the following components: 14.6%-29.5% of coarse aggregate, 28.3%-41.7% of fine aggregate, 11.9%-28.9% of cement, 0-11.7% of fly ash or slag powder, 5.3%-11.9% of silica fume, 0-0.65% of micron-scale fibers, 0-2.10% of millimeter-scale fibers, 0.30%-0.53% of a water reducer, 0-1.86% of an accelerating agent and 7.7%-11.9% of water, wherein the cement, the fly ash or the slag powder and the silica fume jointly form a gelling component of the concrete, and the gelling component accounts for 26.6%-38.9% of the concrete in percentage by weight; and the sum of the weight of the millimeter-scale fibers and the weight of the micron-scale fibers is 0.51%-2.10% of the weight of the concrete according to the weight percentage of the concrete. According to the prepared 3D printing concrete material added with the coarse aggregate, by optimizing the coarse aggregate and the types, the performance parameters and the mixing amount of all the raw materials, the 3D printing requirement can be met, and the surface roughness of the product is reduced.
本发明公开了一种添加碎石粗骨料的3D打印混凝土材料及其制备方法，所述3D打印混凝土材料，按照重量百分数计，包括以下各组分：粗骨料14.6％～29.5％、细骨料28.3％～41.7％、水泥11.9％～28.9％、粉煤灰或矿渣粉0～11.7％、硅灰5.3％～11.9％、微米级纤维0～0.65％、毫米级纤维0～2.10％、减水剂0.30％～0.53％、速凝剂0～1.86％、水7.7％～11.9％；所述水泥、粉煤灰或矿渣粉、硅灰共同组成混凝土的胶凝组分，胶凝组分按照混凝土重量百分数计，占26.6％～38.9％；所述微米级纤维和毫米级纤维按照混凝土重量百分数计，毫米级纤维重量与3倍的微米级纤维重量的和占混凝土重量的0.51％～2.10％。本发明制备的添加粗骨料的3D打印混凝土材料，通过优选粗骨料以及各原材料种类、性能参数和掺量，不仅能够满足3D打印的要求，而且降低了产品的表面粗糙度。
3D printing concrete material added with macadam coarse aggregate and preparation method of 3D printing concrete material
一种添加碎石粗骨料的3D打印混凝土材料及其制备方法
DONG SAIYANG (author) / ZHU MINTAO (author) / WU JIE (author) / BIAN CHENGHUI (author) / WEI JIE (author) / ZHANG YUPENG (author) / ZHOU QIANG (author) / WANG YU (author) / LIU LONG (author)
2021-02-26
Patent
Electronic Resource
Chinese
IPC:
C04B
Kalk
,
LIME
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