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Multi-source waste residue-based concrete 3D printing material and preparation method thereof

A 3D printing and concrete technology, applied in the direction of additive processing, etc., can solve the problems of poor toughness, insufficient cohesion, low strength, etc., and achieve the effect of excellent late strength, weather resistance, and excellent cohesion

Active Publication Date: 2022-07-05
CHINA MCC17 GRP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] Aiming at the problems of large cement usage, low strength, poor toughness and insufficient cohesion in existing concrete 3D printing materials, the purpose of the present invention is to provide a multi-source waste slag-based concrete 3D printing material and its preparation method

Method used

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  • Multi-source waste residue-based concrete 3D printing material and preparation method thereof
  • Multi-source waste residue-based concrete 3D printing material and preparation method thereof
  • Multi-source waste residue-based concrete 3D printing material and preparation method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0046] A multi-source waste slag-based concrete 3D printing material, calculated in parts by weight, 50 parts of Portland cement (P.O 42.5 cement), 50 parts of aluminate cement, 300 parts of solid waste cementitious materials (100 parts of steel slag, 100 parts of fly ash) parts, 100 parts of slag), 250 parts of functionalized fine aggregate (polydopamine modified natural river sand), 0.3 part of water reducing agent (naphthalene series water reducing agent), 0.3 part of water retaining agent (hydroxyethyl propyl cellulose ether) 0.3 part), 0.3 part of interface activator (0.2 part of sodium silicate, 0.1 part of sodium hydroxide), 0.5 part of complexing agent (0.3 part of triethanolamine, 0.2 part of sodium EDTA), 10 parts of surface film-forming agent (solid content 15%, acrylic acid-trifluoroethyl acrylate copolymer, acrylic acid content 8.5%, trifluoroethyl acrylate content 91.5%), 0.5 part of fiber (0.5 part of polypropylene fiber, fiber length 6mm), 4 parts of latex powde...

Embodiment 2

[0054] A multi-source waste residue-based concrete 3D printing material, calculated in parts by weight, 60 parts of Portland cement (30 parts of P.O 32.5 cement, 30 parts of P.O 42.5 cement), 40 parts of aluminate cement, and 400 parts of solid waste cementitious materials ( 150 parts of steel slag, 150 parts of fly ash, 100 parts of slag), 300 parts of functionalized fine aggregate (100 parts of polydopamine modified regenerated machine sand, 200 parts of polyurethane modified natural river sand), 0.4 parts of water reducing agent (naphthalene) 0.2 part of water reducing agent, 0.2 part of polycarboxylate water reducing agent), 0.4 part of water retention agent (0.2 part of hydroxymethyl propyl cellulose ether, 0.2 part of hydroxymethyl propyl starch ether), 0.3 part of interface activator ( 0.15 part of potassium silicate, 0.15 part of sodium hydroxide), 0.6 part of complexing agent (sodium EDTA), 14 parts of surface film-forming agent (25% solid content, methacrylic acid-oct...

Embodiment 3

[0064] A multi-source waste slag-based concrete 3D printing material, calculated in parts by weight, 30 parts of Portland cement (P.O 32.5 cement), 70 parts of aluminate cement, and 300 parts of solid waste cementitious materials (150 parts of steel slag, 120 parts of fly ash) parts, 30 parts of slag), 300 parts of functionalized fine aggregate (melamine-formaldehyde resin modified and recycled river sand), 0.4 part of water reducing agent (0.2 part of naphthalene series water reducing agent, lignosulfonate sodium salt water reducing agent) 0.2 part), 0.3 part of water retention agent (0.15 part of hydroxyethyl propyl cellulose ether, 0.15 part of hydroxymethyl propyl starch ether), 0.3 part of interface activator (0.15 part of potassium silicate, 0.15 part of sodium hydroxide), 0.5 part of complexing agent (sodium ethylenediaminetetramethylene phosphate), 25 parts of surface film-forming agent (solid content 20%, acrylamide-heptadecafluorodecyl acrylate copolymer, acrylamide c...

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Abstract

The invention discloses a multi-source waste residue-based concrete 3D printing material and a preparation method, and belongs to the field of concrete building materials, the multi-source waste residue-based concrete 3D printing material comprises the following raw materials by weight: 10-80 parts of Portland cement, 20-70 parts of aluminate cement, 300-500 parts of a solid waste cementing material, 200-500 parts of a functionalized fine aggregate, 0.2-0.5 part of a water reducer, and 0.1-0.5 part of a water-retaining agent. The coating is prepared from the following components in parts by weight: 0.1-0.4 part of an interface activator, 0.4-0.8 part of a complexing agent, 0.2-3.0 parts of a surface film-forming agent, 0.2-0.6 part of fibers, 2-8 parts of latex powder and 200-880 parts of water. A metal ion complex is adopted to react with calcium hydroxide in cement and an interface exciting agent to form a gelling component, meanwhile, a complexing agent is released synchronously, sustainable use can be achieved, and through the complexing agent, the metal ion complexing agent (metal ion complexing) and the complexing agent (metal ion releasing gelling material), the binding agent is formed. The internal pore structure and the runner of the concrete are circularly and continuously repaired, the printing material is endowed with continuously excellent late strength and weather resistance, and the preparation method of the printing material is simple in process and easy to operate and implement.

Description

technical field [0001] The invention belongs to the technical field of concrete building materials, and in particular relates to a multi-source waste residue-based concrete 3D printing material and a preparation method. Background technique [0002] With the rise of computer technology, 3D printing technology has flourished in medical, aerospace, construction, electronics, clothing, intelligent manufacturing and other fields. In the construction industry, 3D printing technology has the advantages of mold-free, refined, editable, etc., and has broad application prospects, promoting the development of the construction industry to a higher dimension. The metallurgical and coal power industries produce a large amount of solid waste slag such as steel slag, slag and fly ash in the production process. The above-mentioned solid wastes are currently relatively difficult to dispose of, and are mainly disposed of in the open air. On the one hand, this disposal method consumes a lot ...

Claims

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Application Information

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IPC IPC(8): C04B28/06C04B28/26B33Y70/10C04B14/06C04B14/38C04B24/12C04B16/06C04B18/04C04B18/08C04B18/14C04B24/26
CPCC04B28/06C04B28/26B33Y70/10C04B18/142C04B18/08C04B18/141C04B24/123C04B24/122C04B24/003C04B24/2641C04B14/068C04B18/04C04B16/0625C04B16/0641C04B16/0633C04B14/386C04B16/0691C04B24/2652C04B2111/00181C04B2201/50C04B7/02C04B7/32C04B2103/302C04B24/383C04B22/062C04B24/2682C04B24/2676C04B24/2611C04B2103/465C04B24/2623Y02W30/91
Inventor 钱元弟金仁才唐刚方圆何兆芳王新成
Owner CHINA MCC17 GRP