Modified raw soil material for 3D printing and preparation method of modified raw soil material

A 3D printing and permanent soil technology, 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, economic benefits and Significant social benefits

Active Publication Date: 2020-01-24

未来创投(陕西)投资有限公司

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AI-Extracted Technical Summary

Problems solved by technology

The strength of raw soil materials mainly comes from the cohesion of clay and the occlusion between irregula...

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Method used

By the data of embodiment 2 and comparative example 1-3, it can be known that polyvinyl butyral and calcium lignosulfonate are added in raw soil material and have played synergistic effect simultaneously, make solidification time short, compressive strength has The improvement, this may be: polyvinyl butyral molecules have good cold resistance and impact resistance, and at the same time have good binding force, easy to stick to various surfaces, and can form stable molecules with calcium lignosulfonate. , Has a cohesive structure to improve the com...

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Abstract

The invention discloses a modified raw soil material for 3D printing and a preparation method of the modified raw soil material. The modified raw soil material for 3D printing comprises polyvinyl butyral, calcium lignosulfonate, a water-reducing agent, a water-proofing agent, an early-strength agent, raw soil, fiber, alum, gypsum, lime, quick-hard Portland cement, aluminate cement, glutinous ricepaste and water. The modified raw soil material for 3D printing, which is disclosed by the invention, is short in setting time, good in cohesion, free of slump and capable of meeting requirements of 3D printing technology, meanwhile, has the advantages of high early strength, late strength, cold resistance, impact resistance, good waterproof performance, and t he like, and is simple in preparationmethod and easy to operate and implement.

Application Domain

Additive manufacturing apparatus

Technology Topic

Silicate CementPolyvinyl alcohol +18

Image

Examples

Experimental program(6)
Comparison scheme(4)
Effect test(1)

Example Embodiment

[0027] Example 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% lipid polycarboxylate superplasticizer, 0.08% organic silicon, 0.047% calcium oxide and water to obtain an auxiliary agent mixture for future 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 second stirring, and stir at low speed for 2 minutes first) , then high-speed stirring for 5 minutes, and finally low-speed stirring for 2 minutes; among them, the low speed is the cement mortar mixer rotation 140±5r/min, revolution 62±5r/min; the high speed is the cement mortar mixer rotation 285±10r/min, revolution 125±10r /min), get 3D printing with modified raw soil material; Wherein, the consumption ratio of water in step 1, step 2 and step 4 is 2:3:7.

Example Embodiment

[0033] Example 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, 0.402% glutinous rice pulp and water, and stir for the second time (use cement mortar mixer for the second stirring, and stir at low speed for 2 minutes first) , then high-speed stirring for 5 minutes, and finally low-speed stirring for 2 minutes; among them, the low speed is the cement mortar mixer rotation 140±5r/min, revolution 62±5r/min; the high speed is the cement mortar mixer rotation 285±10r/min, revolution 125±10r /min), get 3D printing with modified raw soil material; Wherein, the consumption ratio of water in step 1, step 2 and step 4 is 2:3:7.

Example Embodiment

[0039] Example 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 stir at low speed for 2 minutes first) , then high-speed stirring for 5 minutes, and finally low-speed stirring for 2 minutes; among them, the low speed is the cement mortar mixer rotation 140±5r/min, revolution 62±5r/min; the high speed is the cement mortar mixer rotation 285±10r/min, revolution 125±10r /min), get 3D printing with modified raw soil material; Wherein, the consumption ratio of water in step 1, step 2 and step 4 is 2:3:7.

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Description & Claims & Application Information

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the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine

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Alkali-free liquid accelerator for effectively preventing sprayed concrete from crystallizing to block drainage system and preparation method of alkali-free liquid accelerator

ActiveCN113943122AShort setting timeImprove early strengthSalt crystallizationCalcium carbonate

Owner:中国铁路南宁局集团有限公司 +1

Classification and recommendation of technical efficacy words

Good cohesion
Short setting time

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InactiveCN102531487AGood cohesionSmall coefficient of thermal expansionDamp environmentCoal

Owner:PINGDINGSHAN HENGJI CONCRETE

Spd films and light valves incorporating overcoatings which enhance film adhesion to substrates, have good cohesion and protect against electrical short circuits

ActiveUS20090153944A1Good cohesionImprove adhesion and cohesionCoatingsSpecial surfacesElectric fieldTitanium dioxide

Owner:RES FRONTIERS

Modified raw soil material for 3D printing and preparation method of modified raw soil material

A 3D printing and permanent soil technology, 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, economic benefits and Significant social benefits

AI-Extracted Technical Summary

Problems solved by technology

Method used

Abstract

Image

Examples

Example Embodiment

Example Embodiment

Example Embodiment

PUM

Description & Claims & Application Information

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