High-performance powder concrete for 3D (three-dimensional) printing

A technology of powder concrete and 3D printing, which is applied in the field of concrete, can solve problems such as difficulty in forming high-strength concrete structures, unfavorable structural stability of buildings, and lack of fast-setting performance, so as to save building materials and energy consumption, and has good durability. The effect of short construction time

CN104961411AActive Publication Date: 2015-10-07黄贺明
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Publication Date
2015-10-07

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Abstract

The invention relates to high-performance powder concrete for 3D (three-dimensional) printing. The concrete is prepared from the following raw materials in parts by weight: 500-900 parts of ordinary Portland cement, 250-350 parts of active mineral admixture, 800-1,300 parts of inert filler, 10-20 parts of composite efficient water reducing agent powder, 2-5 parts of thickener, 4-10 parts of self-curing agent, 2-10 parts of fast setting time regulator, 145-230 parts of water, 3 parts of organic fiber and 40-200 parts of copper plated fiber. The concrete material for 3D printing has the characteristics of ultrahigh strength and toughness, good durability, long full life cycle, high curing rate, good flowing property and easiness in pumping and lifting and is suitable for constructing 3D-printed building structural materials in all kinds of engineering.
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Description

technical field

[0001] The invention relates to the technical field of concrete, in particular to a high-performance powder concrete used for 3D printing in construction engineering. Background technique

[0002] In fact, 3D printing technology is a technology that uses light curing and paper lamination to achieve rapid condensation molding. The 3D printer is equipped with powdered resin, metal or plastic and other composite bondable materials. After connecting to the computer, the blueprint on the computer is finally turned into a real object through layer after layer of multi-layer printing. 3D printing technology can be applied in the construction industry. After the computer designs and draws the relevant building drawings, the movement in the X-axis direction is realized by the gantry walking mechanism; the movement in the Y direction is realized by the beam; the movement in the Z direction is realized by the printing rod on the upper part of the print head. exercise. ...

Examples

Embodiment 1

[0055] A high-performance powder concrete for 3D printing is made from raw materials with the following weight components:

[0056] 500 parts of ordinary Portland cement with an average particle size of 20-60 μm and no less than grade 42.5;

[0057] 250 parts of active mineral admixture with an average particle size of 0.1-60 μm and an activity index greater than 120% within 7 days;

[0058] 800 parts of inert fillers with a particle size of less than 2.5mm;

[0059] 10 parts of composite high-efficiency superplasticizer powder with water reducing rate greater than 30%;

[0060] 2 parts of thickener;

[0061] 4 parts of self-curing agent;

[0062] 2 parts of non-alkali fast setting time regulator;

[0063] 145 parts of water;

[0064] 3 parts of organic fiber with a length of 6~12mm;

[0065] 40 pieces of copper-plated fiber with a length of 6~15mm and a diameter of 0.08~0.25mm.

[0066] Wherein, the alkali-free rapid time regulator is prepared by mixing the following r...

Embodiment 2

[0074] Except that the high-performance powder concrete used for 3D printing, alkali-free fast setting time regulator, active mineral admixture, and self-curing agent have different formulations, the others are the same as in Example 1;

[0075] A high-performance powder concrete for 3D printing is made from raw materials with the following weight components:

[0076] 900 parts of ordinary Portland cement with an average particle size of 20-60 μm and no less than grade 42.5;

[0077] 350 parts of active mineral admixture with an average particle size of 0.1-60 μm and an activity index greater than 120% within 7 days;

[0078] 1300 parts of inert fillers with a particle size of less than 2.5mm;

[0079] 20 parts of compound high-efficiency superplasticizer powder with water reducing rate greater than 30%;

[0080] 5 parts of thickener;

[0081] 10 parts of self-curing agent;

[0082] 10 parts of alkali-free fast setting time regulator;

[0083] 230 parts of water;

[0084...

Embodiment 3

[0089] Except that the formula of the high-performance powder concrete used for 3D printing is different, other is the same as embodiment 1;

[0090] A high-performance powder concrete for 3D printing is made from raw materials with the following weight components:

[0091] 700 parts of ordinary Portland cement with an average particle size of 20-60 μm and no less than grade 42.5;

[0092] 270 parts of active mineral admixture with an average particle size of 0.1-60 μm and an activity index greater than 120% within 7 days;

[0093] 900 parts of inert fillers with a particle size of less than 2.5mm;

[0094] 15 parts of composite high-efficiency superplasticizer powder with water reducing rate greater than 30%;

[0095] 3 parts of thickener;

[0096] 6 parts of self-curing agent;

[0097] 5 parts of non-alkali fast setting time regulator;

[0098] 180 parts of water;

[0099] 3 parts of organic fiber with a length of 6~12mm;

[0100] 100 pieces of copper-plated fiber wit...