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Recycled cement-based material based on 3D printing and preparation method thereof

A recycled cement and 3D printing technology, applied in the direction of additive processing, etc., can solve the problems of long construction period, high cost, and ineffective use of materials

Pending Publication Date: 2021-04-23
FOSHAN UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Based on this, in order to solve the problems of ineffective use of materials, long construction period and high cost in the prior art, the present invention provides a recycled cement-based material based on 3D printing and its preparation method. The specific technical scheme is as follows:

Method used

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  • Recycled cement-based material based on 3D printing and preparation method thereof
  • Recycled cement-based material based on 3D printing and preparation method thereof
  • Recycled cement-based material based on 3D printing and preparation method thereof

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preparation example Construction

[0036] In addition, an embodiment of the present invention also provides a method for preparing recycled cement-based materials based on 3D printing, including the following steps:

[0037] Place the cement, the ceramic powder, the fly ash, the graphite tailings, the river sand, the thickener and the basalt fiber in a heating and stirring device at a stirring speed of 1500r / Stirring under the condition of min-1800r / min for 12min-15min to obtain the first mixture;

[0038] Mixing the alkaline water agent and the water uniformly in proportion to obtain a second mixture;

[0039] Adding a second mixture accounting for 1 / 2 of the volume of the second mixture to the first mixture under stirring, and continuing to stir for 3min-10min to obtain a third mixture;

[0040] Under the condition of stirring, the rest of the second mixture is added, and the stirring is continued for 3 minutes to 10 minutes to obtain a recycled cement-based material.

Embodiment 1

[0049] A preparation method of recycled cement-based material based on 3D printing is as follows:

[0050] Place 1.0kg of cement, 0.29kg of ceramic powder, 0.14kg of fly ash, 0.57kg of graphite tailings, 1.7kg of river sand, 0.017kg of industrial grade xanthan gum and 0.05kg of basalt fiber into a heating and stirring device. Stirring under the condition of 1500r / min for 12min to obtain the first mixture;

[0051] Mix 0.008kg polycarboxylate water reducer and 0.56kg water uniformly in proportion to obtain the second mixture;

[0052] Adding a second mixture accounting for 1 / 2 of the volume of the second mixture to the first mixture under stirring, and continuing to stir for 3 minutes to obtain a third mixture;

[0053] Under the condition of stirring, the rest of the second mixture was added, and the stirring was continued for 3 minutes to obtain a regenerated cement-based material.

Embodiment 2

[0055] A preparation method of recycled cement-based material based on 3D printing is as follows:

[0056] 1.0kg cement, 0.25kg ceramic powder, 0.08kg fly ash, 0.25kg graphite tailings, 1.2kg river sand, 0.008kg industrial grade xanthan gum and 0.003kg basalt fiber were placed in the heating and stirring device. Stirring under the condition of 1800r / min for 15min to obtain the first mixture;

[0057] Mix 0.005kg of polycarboxylate water reducer and 0.50kg of water uniformly in proportion to obtain the second mixture;

[0058] Adding a second mixture accounting for 1 / 2 of the volume of the second mixture to the first mixture under stirring, and continuing to stir for 10 minutes to obtain a third mixture;

[0059] Under the condition of stirring, the rest of the second mixture was added, and the stirring was continued for 10 minutes to obtain a recycled cement-based material.

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Abstract

The invention provides a recycled cement-based material based on 3D printing and a preparation method thereof. The recycled cement-based material is prepared from, by mass, cement, ceramic powder, coal ash, graphite tailings, river sand, water, a water reducing agent, a thickening agent and basalt fibers, wherein the ratio of the cement to the ceramic powder to the coal ash to the graphite tailings to the river sand to the water to the water reducing agent to the thickening agent to the basalt fibers is 100: 0-29: 0-14: 0-57: 0-170: 0-56: 0.01-0.8: 0.01-1.7: 0.01-0.5. Resources can be effectively utilized, resource waste and environmental pollution are reduced, the prepared recycled cement-based material has proper fluidity and excellent extrudability, forming effect, constructability and compressive strength, high-quality engineering products can be obtained, the recycled cement-based material is applied to 3D printing, overall engineering time is short, labor consumption is low, and cost can be reduced.

Description

technical field [0001] The invention relates to the technical field of architectural 3D printing materials, in particular to a 3D printing-based recycled cement-based material and a preparation method thereof. Background technique [0002] The output of ceramics in our country is very large. Ceramic polished tiles are one of the largest building ceramic products in our country. In the process of product grinding and polishing, a large amount of solid waste is produced, which is called ceramic powder. With the development of the ceramic industry, a large amount of ceramic industry waste and waste is also increasing, which not only causes great pressure on the urban environment, but also limits the sustainable development of the urban and rural economy and the ceramic industry. The long-term accumulation of graphite tailings causes the heavy metal elements in the graphite tailings to leach into the soil and pollute groundwater resources. In windy weather, the graphite tailings...

Claims

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Application Information

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IPC IPC(8): C04B28/00B33Y70/10
CPCC04B28/00B33Y70/10C04B2201/20C04B2201/50C04B2111/00181C04B24/38C04B14/06C04B18/12C04B14/4643C04B18/025C04B2103/302C04B2103/44
Inventor 余盈李犇罗冬梅
Owner FOSHAN UNIVERSITY
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