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Building 3D printing type rapid prototyping composite material

A composite material and 3D printing technology, which is applied in the field of building materials, can solve the problems that the control range of the initial setting time is large, and it is difficult for ordinary technicians to master it. strong effect

Active Publication Date: 2019-03-29
SHANDONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the present invention believes that the initial setting time control range of this cement-based building 3D printing material is too large, which is difficult for ordinary technical personnel to grasp, and it has not been able to make in-depth research on the volume stability of cement-based building 3D printing materials.

Method used

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  • Building 3D printing type rapid prototyping composite material
  • Building 3D printing type rapid prototyping composite material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] 1. A building 3D printing rapid prototyping composite material, in parts by weight, said composite material comprising the following raw materials:

[0029] 400 parts of 42.5R rapid hardening sulfoaluminate cement;

[0030] 80 parts of slag fine powder, the fineness is 450m 2 / kg;

[0031] 200 parts of coarse aggregate (stones with particle size less than 5mm);

[0032] 300 parts of fine aggregate (medium sand with a particle size of 0.25-0.5mm);

[0033] 0.8 parts of polycarboxylate PC water reducer;

[0034] Composite coagulation agent, it is made up of 0.6 part of lithium carbonate and 0.8 part of sodium tetraborate;

[0035] A volume stabilizer consisting of 30 parts high calcium fly ash and 28 parts CSA expander.

[0036] 2. The method for simulating and preparing a 3D printed building using the building 3D printing rapid prototyping composite material of this embodiment includes the following steps:

[0037] (1) Put cement, slag micropowder, aggregate and hi...

Embodiment 2

[0041] 1. A building 3D printing rapid prototyping composite material, in parts by weight, said composite material comprising the following raw materials:

[0042]450 parts of 42.5R rapid hardening sulfoaluminate cement;

[0043] 100 parts of slag fine powder, the fineness is 500m 2 / kg;

[0044] 220 parts of coarse aggregate (stones with particle size less than 5mm);

[0045] 240 parts of fine aggregate (medium sand with a particle size of 0.25-0.5mm);

[0046] 0.4 parts of polycarboxylate PC water reducer;

[0047] Composite coagulant, which is made up of 0.8 part of lithium carbonate and 1.0 part of sodium tetraborate;

[0048] A volume stabilizer consisting of 33 parts high calcium fly ash and 25 parts CSA expander.

[0049] 2. The method for simulating and preparing a 3D printed building using the building 3D printing rapid prototyping composite material of this embodiment includes the following steps:

[0050] (1) Put cement, slag micropowder, aggregate and high-ca...

Embodiment 3

[0054] 1. A building 3D printing rapid prototyping composite material, in parts by weight, said composite material comprising the following raw materials:

[0055] 300 parts of 42.5R rapid hardening sulfoaluminate cement;

[0056] 125 parts of slag fine powder, the fineness is 500m 2 / kg;

[0057] 250 parts of coarse aggregate (stones with particle size less than 5mm);

[0058] 290 parts of fine aggregate (medium sand with a particle size of 0.25-0.5mm);

[0059] 0.2 parts of polycarboxylate PC water reducer;

[0060] Composite coagulant, which is made up of 0.4 part of lithium carbonate and 0.6 part of sodium tetraborate;

[0061] A volume stabilizer consisting of 25 parts high calcium fly ash and 20 parts CSA expander.

[0062] 2. The method for simulating and preparing a 3D printed building using the building 3D printing rapid prototyping composite material of this embodiment includes the following steps:

[0063] (1) Put cement, slag micropowder, aggregate and high-c...

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Abstract

The invention discloses a building 3D printing type rapid prototyping composite material. The composite material is prepared from the following raw materials in parts by weight: 300-450 parts of cement, 80-125 parts of superfine slag powder, 460-540 parts of aggregate, 0.2-0.8 part of a water reducer, 1.0-1.9 parts of a composite retarder and 45-63 parts of a volume stabilizer, wherein the composite retarder is prepared from a coagulant and a retarder body, the weight ratio of the coagulant to the retarder body is (0.4-0.8) part to (0.6-1.1) parts, and the volume stabilizer is prepared from, in parts by weight, (25-35) parts of high-calcium fly ash and (20-28) parts of a CSA expanding agent. According to the composite material, a printing material prepared from the composite material is good in cohesiveness property and high in stability and has good morphology retention capability and cohesiveness performance, so that a printed building has good morphology and volume stability.

Description

technical field [0001] The invention belongs to the field of building materials, in particular to a building 3D printing rapid prototyping composite material. Background technique [0002] At present, ordinary building concrete as a building 3D printing material cannot meet the requirements of 3D printing because the initial setting time is 6-10 hours and the curing time exceeds 24 hours. Gypsum-based building materials have good quick-drying and strength in spraying systems, but the disadvantages of gypsum-based building materials, such as fast setting time, relatively high water absorption, and easy deterioration, will definitely have many shortcomings in 3D printing. The use of quick-drying cement in 3D printing is mainly due to the strong alkali that stimulates the strength of the cement. This can indeed increase the strength of the cement quickly, but the pulverization in the later stage is a big problem. It cannot meet the performance requirements of rapid condensatio...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B28/06B33Y70/00
CPCB33Y70/00C04B28/06C04B2201/50C04B18/141C04B14/06C04B2103/302C04B22/08C04B22/0006C04B14/02C04B22/10
Inventor 张炯胡念夏霜裴妍韩若楠代朝霞佘蕊
Owner SHANDONG UNIV
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