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Seawater and sea sand concrete material for 3D printing

A 3D printing and concrete technology, applied in the direction of additive processing, etc., can solve the problems of mismatching of the performance of concrete materials for printing, affect the safety of printed concrete components, limit the development of 3D printing construction technology, etc., achieve good durability, easy The effect of low cost of acquisition and preparation

Pending Publication Date: 2020-05-15
TONGJI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, there are some problems that must be solved in the construction of 3D printing, such as the mismatch of the performance of the concrete material used for printing, and the bonding performance between different printing ink layers, which seriously affect the safety of the printed concrete components and limit the construction of 3D printing. technological development

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0096] This implementation discloses a method for preparing a fiber-reinforced seawater sea sand concrete material for 3D printing, which includes the following steps: according to the weight ratio, measure and take 100 parts of cement, 50 parts of active coral powder, 400 parts of sea sand, and 3 parts of synthetic fiber , 50 parts of redispersible latex powder and 5 parts of cellulose ether were stirred for the first time for 2 minutes to obtain a premix. Then measure 75 parts of seawater, 1.2 parts of polycarboxylate superplasticizer and 0.2 parts of air-entraining agent and add them to the premix for the second stirring and mixing. The mixing time is 3 minutes to obtain the final mixture. The slump of the compound is 60±5mm, and then as the ink material, the 3D printing equipment is used to automatically print the concrete specimen with growth*width*height=400mm*100mm*100mm according to the setting. After 28 days of curing, the 3D Printing fiber reinforced seawater sea san...

Embodiment 2

[0098] This implementation discloses a method for preparing a fiber-reinforced seawater sea sand concrete material for 3D printing, including the following steps: according to the weight ratio, measure and take 120 parts of cement, 30 parts of active coral powder, 400 parts of sea sand, and 6 parts of synthetic fiber , 50 parts of redispersible latex powder and 5 parts of cellulose ether were stirred for the first time for 2 minutes to obtain a premix. Then measure 75 parts of seawater, 1.2 parts of polycarboxylate superplasticizer and 0.2 parts of air-entraining agent and add them to the premix for the second stirring and mixing. The mixing time is 3 minutes to obtain the final mixture. The slump of the compound is 60±5mm, and then as the ink material, the 3D printing equipment is used to automatically print the concrete specimen with growth*width*height=400mm*100mm*100mm according to the setting. After 28 days of curing, the 3D Fiber-reinforced seawater sand concrete specime...

Embodiment 3

[0100] This implementation discloses a method for preparing a fiber-reinforced seawater sea sand concrete material for 3D printing, including the following steps: according to the weight ratio, measure and take 120 parts of cement, 10 parts of active coral powder, 400 parts of sea sand, and 12 parts of synthetic fiber , 50 parts of redispersible latex powder and 5 parts of cellulose ether were stirred for the first time for 2 minutes to obtain a premix. Then measure 75 parts of seawater, 1.2 parts of polycarboxylate superplasticizer and 0.2 parts of air-entraining agent and add them to the premix for the second stirring and mixing. The mixing time is 3 minutes to obtain the final mixture. The slump of the compound is 60±5mm, and then as the ink material, the 3D printing equipment is used to automatically print the concrete specimen with growth*width*height=400mm*100mm*100mm according to the setting. After 28 days of curing, the 3D Printing fiber reinforced seawater sea sand co...

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Abstract

The invention provides a preparation method of a seawater and sea sand concrete material for 3D printing. The invention also provides a seawater and sea sand concrete product and a preparation methodthereof. Rich seawater and sea sand resources in coastal regions of China are fully utilized, and a novel seawater and sea sand concrete material for 3D printing is researched to solve the problem ofgreen construction of a concrete structure in a severe ocean environment. A 3D printing intelligent construction technology is combined with seawater and sea sand concrete; the formula of the seawaterand sea sand concrete is optimally designed; on the basis of auxiliary cementing material co-doping, synthetic plastic fiber toughening and admixture blending; the seawater and sea sand concrete material meeting 3D printing requirements is prepared and can be applied to development of intelligent construction technologies and ocean engineering in the field of civil engineering in the future, so that the application of the seawater and sea sand concrete material has high social benefits and practical significance, and the technology can be popularized to military engineering.

Description

technical field [0001] The invention belongs to the technical field of civil engineering materials, and relates to a method for preparing seawater and sea sand concrete materials for 3D printing and seawater and sea sand concrete products. Background technique [0002] With the rapid development of industrial technology, 3D printing technology has been widely used in machinery manufacturing and medical and health fields. In recent years, 3D printing technology has also developed in the field of intelligent construction. 3D printing construction technology mainly uses concrete materials as printing "ink". According to the setting of program parameters, concrete products that meet the requirements are printed. It has significant advantages in terms of unmanned construction and harsh environments, which saves a lot of labor costs and ensures the personal safety of construction workers. With the transformation and upgrading needs of the construction industry and the promotion o...

Claims

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Application Information

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IPC IPC(8): C04B28/04B33Y70/10
CPCC04B28/04B33Y70/00C04B2111/00181C04B14/28C04B14/068C04B2103/0057C04B16/06C04B24/383C04B22/0026C04B2103/302C04B2103/304
Inventor 肖建庄马志鸣丁陶段珍华
Owner TONGJI UNIV
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