A kind of modified raw soil material for 3D printing and preparation method thereof

A technology of 3D printing and natural soil, applied in the direction of additive processing, etc., can solve the problems of low strength, low flexural and shear strength, etc., to improve early strength and crack resistance, good cold resistance, and cohesion Good results

Active Publication Date: 2020-08-04
西安安居未来建设科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The strength of raw soil materials mainly comes from the cohesion of clay and the occlusion between irregular particles, so the strength is not high, especially the flexural and shear strengths are generally very low

Method used

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  • A kind of modified raw soil material for 3D printing and preparation method thereof
  • A kind of modified raw soil material for 3D printing and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] A preparation method of modified raw soil material for 3D printing, comprising the following steps:

[0029] Step 1: Mix 0.059% polyvinyl butyral, 0.042% calcium lignosulfonate and water at a temperature of 42°C under sealed conditions, and stir for 3.5 hours to obtain a modified material for later use. Among them, the water content of the modified material is 72%.

[0030] Step 2: Mix 0.153% ester polycarboxylate superplasticizer, 0.08% organic silicon, 0.047% calcium oxide and water to obtain an auxiliary agent mixture for later use.

[0031] Step 3, mix 88.182% raw soil, 0.476% rice straw (rice straw), 0.106% alum, 0.532% gypsum, 1.144% lime, 1.039% rapid hardening Portland cement, and 0.464% aluminate cement to obtain a mixture ,spare.

[0032] Step 4, first mix the modified material and the auxiliary agent mixture, stir once for 25 minutes, then add the mixture, 0.402% glutinous rice pulp and water, and stir for the second time (use cement mortar mixer for the se...

Embodiment 2

[0034] A preparation method of modified raw soil material for 3D printing, comprising the following steps:

[0035] Step 1: Mix 0.059% polyvinyl butyral, 0.042% calcium lignosulfonate and water at a temperature of 45°C under sealed conditions, and stir for 3 hours to obtain a modified material, which is set aside. Wherein, the water content of the modified material is 70%.

[0036] Step 2: Mix 0.153% naphthalene-based high-efficiency water reducer, 0.08% silicone, 0.047% early-strength agent and water to obtain a mixture of additives for later use. Wherein, the early strength agent comprises calcium oxide and potassium bicarbonate with a mass ratio of 1:2.

[0037] Step 3: Mix 87.359% raw soil, 0.476% straw, 0.106% alum, 0.913% gypsum, 1.144% lime, 1.039% rapid hardening portland cement, and 0.824% aluminate cement to obtain a mixture for use.

[0038] Step 4, first mix the modified material and the auxiliary agent mixture, stir once for 25 minutes, then add the mixture, 0.4...

Embodiment 3

[0040] A preparation method of modified raw soil material for 3D printing, comprising the following steps:

[0041] Step 1: Mix 0.076% polyvinyl butyral, 0.065% calcium lignosulfonate and water at a temperature of 40°C under sealed conditions, and stir for 4 hours to obtain a modified material, which is set aside. Wherein, the water content of the modified material is 75%.

[0042] Step 2: Mix 0.186% ether-based polycarboxylate water reducer, 0.104% silicone, 0.054% triethanolamine and water to obtain an auxiliary agent mixture for later use.

[0043] Step 3: Mix 88.81% raw soil, 0.476% straw, 0.091% alum, 0.429% gypsum, 1.152% lime, 1.22% rapid hardening Portland cement, and 0.625% aluminate cement to obtain a mixture for use.

[0044]Step 4, first mix the modified material and the auxiliary agent mixture, stir once for 25 minutes, then add the mixture, 0.43% glutinous rice pulp and water, and stir for the second time (use cement mortar mixer for the second stirring, and sti...

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Abstract

The invention discloses a modified raw soil material for 3D printing and a preparation method thereof. The raw soil material for 3D printing includes polyvinyl butyral, calcium lignosulfonate, water reducing agent, waterproofing agent, and early strength agent , raw soil, fiber, alum, gypsum, lime, rapid hardening Portland cement, aluminate cement, glutinous rice pulp and water. The raw soil material for 3D printing obtained in the present invention has short setting time, good cohesion, and no slump, which can meet the requirements of 3D printing technology; meanwhile, it has high early strength, late strength, cold resistance and impact resistance It has the advantages of good waterproof performance and the like, and its preparation method is simple, and it is easy to operate and implement.

Description

technical field [0001] The invention relates to the field of construction engineering materials, in particular to a modified raw soil material for 3D printing and a preparation method thereof. Background technique [0002] As a rapid prototyping technology, 3D printing is based on digital model files and uses various printing materials such as metal, plastic, cement, etc. to build objects by layer-by-layer printing. It is known as the "third industrial technology". The core technology of the revolution. Compared with traditional manufacturing techniques, 3D printing does not need to manufacture molds in advance, does not require complicated manufacturing processes, and the final product can be obtained with a very small amount of labor participation. Therefore, it has a series of advantages such as saving labor and raw materials, simple manufacturing process, and good product integration. [0003] 3D printing materials are an important material condition for the developmen...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C04B28/14B33Y70/10
CPCB33Y70/00C04B28/14C04B2111/00181C04B2201/05C04B2201/50C04B2201/52C04B2/02C04B7/02C04B7/32C04B24/38C04B24/2635C04B24/18C04B24/42C04B14/361C04B22/148C04B18/24C04B2103/302C04B22/064C04B24/226C04B2103/12C04B24/122
Inventor 刘云霄蔡凯旋张郁
Owner 西安安居未来建设科技有限公司
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