A method for preparing 3D printing ink from waste 3D printing concrete

A technology of 3D printing and concrete regeneration, applied in the direction of additive processing, etc., can solve the problems such as the recycling value and broad prospects of 3D printing concrete that have not been considered, and achieve the effect of high recycling value, high quality and high content

Active Publication Date: 2021-06-15
TONGJI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, the recycling value and broad prospects of 3D printed concrete have not been considered in the current research and application.

Method used

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  • A method for preparing 3D printing ink from waste 3D printing concrete
  • A method for preparing 3D printing ink from waste 3D printing concrete
  • A method for preparing 3D printing ink from waste 3D printing concrete

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0058] Prepare 3D printing ink sample 1#, including the following components in parts by weight: 300 parts of cement; 1000 parts of 3D printing concrete recycled mixture; 10 parts of plant fiber; 100 parts of metakaolin; 100 parts of silica fume; 6 parts of water glass ; 1.15 parts of water reducing agent; 0.64 parts of cellulose; 248 parts of water.

[0059] Among them, the cement is P.O 42.5 ordinary Portland cement; the plant fiber is wood fiber, with a diameter of 0.20mm, a length of 12mm, and a tensile strength of 580MPa; the average particle size of metakaolin is 1.2μm, and the specific surface area is 18-24m 2 / g, activity index ≥ 110; specific surface area of ​​silica fume is 13-20m 2 / g, activity index ≥ 105; superplasticizer is polycarboxylate superplasticizer, density is 1.09g / cm 3 , the solid content is 40%; the cellulose is carboxypropyl methylcellulose; the water is tap water.

[0060] The 3D printed concrete recycled mixture is obtained by intelligent crushing...

Embodiment 2

[0063] Prepare 3D printing ink sample 2#, including the following components by weight: 300 parts of cement; 500 parts of 3D printing concrete recycled mixture; 10 parts of plant fiber; 100 parts of metakaolin; 100 parts of silica fume; 3.5 parts of water glass ; 0.97 parts of water reducing agent; 0.71 parts of cellulose; 212 parts of water.

[0064] Among them, the cement is P.O 42.5 ordinary Portland cement; the plant fiber is wood fiber, with a diameter of 0.20mm, a length of 12mm, and a tensile strength of 580MPa; the average particle size of metakaolin is 1.2μm, and the specific surface area is 18-24m 2 / g, activity index ≥ 110; specific surface area of ​​silica fume is 13-20m 2 / g, activity index ≥ 105; superplasticizer is polycarboxylate superplasticizer, density is 1.09g / cm 3 , the solid content is 40%; the cellulose is carboxypropyl methylcellulose; the water is tap water.

[0065] The 3D printed concrete recycled mixture is obtained by intelligent crushing of wast...

Embodiment 3

[0068] Prepare 3D printing ink sample 3#, including the following components by weight: 500 parts of cement; 700 parts of 3D printing concrete recycled mixture; 10 parts of plant fiber; 100 parts of metakaolin; 100 parts of silica fume; 4.5 parts of water glass ; 1.01 parts of water reducing agent; 0.68 parts of cellulose; 296 parts of water.

[0069] Among them, the cement is P.O 42.5 ordinary Portland cement; the plant fiber is wood fiber, with a diameter of 0.20mm, a length of 12mm, and a tensile strength of 580MPa; the average particle size of metakaolin is 1.2μm, and the specific surface area is 18-24m 2 / g, activity index ≥ 110; specific surface area of ​​silica fume is 13-20m 2 / g, activity index ≥ 105; superplasticizer is polycarboxylate superplasticizer, density is 1.09g / cm 3 , the solid content is 40%; the cellulose is carboxypropyl methylcellulose; the water is tap water.

[0070] The 3D printed concrete recycled mixture is obtained by intelligent crushing of wast...

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Abstract

The invention provides a 3D printing ink prepared from waste 3D printing concrete, which comprises the following components in parts by weight: 200-600 parts of cement; 300-1200 parts of recycled concrete for 3D printing; 1-20 parts of plant fiber; 10-200 parts of kaolin; 10-200 parts of silica fume; 0.5-15 parts of water glass; 0.1-3.0 parts of water reducing agent; 0.10-0.95 parts of cellulose; 100-600 parts of water. The present invention further provides a method for preparing 3D printing ink from waste 3D printing concrete. The invention provides a method for preparing 3D printing ink from waste 3D printing concrete, which fully utilizes waste 3D printing concrete to prepare recycled mixture, and then prepares 3D printing ink, which can realize the recycling and recycling of 3D printing concrete.

Description

technical field [0001] The invention belongs to the technical field of building 3D printing and waste recycling, and relates to a method for preparing 3D printing ink from waste 3D printing concrete. Background technique [0002] 3D printing technology is an intelligent construction technology that completes the manufacturing of solid structures by superimposing materials layer by layer, and has the characteristics of no need for templates. 3D printing concrete uses concrete as the ink material, and applies 3D printing technology to the field of construction engineering. Compared with traditional construction, it has the following advantages: 1) High degree of mechanization, fast construction, and low cost; 2) No formwork construction, resources Less consumption; 3) Low labor intensity, saving manpower; 4) The construction process is safe, clean and precise; 5) Free design, realizing light weight, high strength and multi-function; 6) Highly customized, realizing the unificat...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C04B28/04B33Y70/10
CPCB33Y70/10C04B28/04C04B2111/00181C04B2201/50C04B18/167C04B18/26C04B14/106C04B12/04C04B18/146C04B24/383C04B2103/302
Inventor 肖建庄李岩丁陶段珍华
Owner TONGJI UNIV
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