Adjustable 3D printing colored cement-based mixture

A 3D printing and color cement technology, applied in the field of building materials, can solve the problems of poor operability, complex formula components, and not meeting rapid construction, and achieve the effect of improving operability, facilitating popularization and application, and meeting the needs of rapid construction.

Pending Publication Date: 2021-10-26
CHINA RAILWAY 23RD BUREAU GRP RAILTRANSIT ENG CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The above-mentioned patents can promote the faster setting of mortar and have higher early strength. In addition, 3D printing special thixotropic agent, early strength agent, volume stabilizer and other additives are added to make the mortar raw material suitable for 3D printing, with high early strength. The advantage of stable strength development in the later stage, but it also has defects, such as: most of the formula components are complex, the operability is not strong, it does not meet the needs of rapid construction, and it is not conducive to the popularization and application of 3D printing technology

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] An adjustable 3D printing color cement-based mixture, including dry mixture and auxiliary materials, the dry mixture includes the following components by weight:

[0027] 85 parts of white cement;

[0028] 25 parts of mineral powder;

[0029] 0.3 parts of cellulose ether;

[0030] 0.2 parts of fiber;

[0031] 2 parts of pigment;

[0032] 65 parts of medium sand;

[0033] The auxiliary material and the dry mixture are mixed in a mass ratio of 2:3 to prepare an adjustable 3D printing color cement-based mixture.

[0034] In this embodiment, preferably, the auxiliary material includes a stabilizer.

[0035] In this embodiment, preferably, the white cement is white Portland cement, the whiteness of the white cement is 90, and the initial setting time of the white cement is 47 minutes.

[0036] In this embodiment, preferably, the 7d activity index of the mineral powder is 96.5%, and the content of SO3 in the mineral powder is 8%.

[0037] In this embodiment, preferably...

Embodiment 2

[0044] An adjustable 3D printing color cement-based mixture, including dry mixture and auxiliary materials, the dry mixture includes the following components by weight:

[0045] 200 parts of white cement;

[0046] 80 parts of mineral powder;

[0047] 0.42 parts of cellulose ether;

[0048] 0.3 parts of fiber;

[0049] 2 parts of pigment;

[0050] 95 parts of medium sand;

[0051] The auxiliary material and the dry mixture are mixed in a mass ratio of 2:3 to prepare an adjustable 3D printing color cement-based mixture.

[0052] In this embodiment, preferably, the auxiliary material includes a thixotropic agent.

[0053] In this embodiment, preferably, the white cement is white Portland cement, the whiteness of the white cement is 96, and the initial setting time of the white cement is 49 minutes.

[0054] In this embodiment, preferably, the 7d activity index of the mineral powder is 99%, and the content of SO3 in the mineral powder is 8%.

[0055] In this embodiment, pre...

Embodiment 3

[0062] An adjustable 3D printing color cement-based mixture, including dry mixture and auxiliary materials, the dry mixture includes the following components by weight:

[0063] 50 parts of white cement;

[0064] 10 parts of mineral powder;

[0065] 0.09 parts of cellulose ether;

[0066] Fiber 0.01 part;

[0067] 1 part of pigment;

[0068] 60 parts of medium sand;

[0069] The auxiliary material and the dry mixture are mixed in a mass ratio of 2:3 to prepare an adjustable 3D printing color cement-based mixture.

[0070] In this embodiment, preferably, the auxiliary material includes an early-strength dose.

[0071] In this embodiment, preferably, the white cement is white Portland cement, the whiteness of the white cement is 92, and the initial setting time of the white cement is 60 minutes.

[0072] In this embodiment, preferably, the 7d activity index of the mineral powder is 97%, and the content of SO3 in the mineral powder is 9%.

[0073]In this embodiment, prefer...

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Abstract

The invention discloses an adjustable 3D printing colored cement-based mixture. The mixture is characterized by comprising a dry mixed material and an auxiliary material, and the dry mixed material comprises, by weight, 50-200 parts of white cement; 10-80 parts of mineral powder; 0.09-0.42 part of cellulose ether; 0.01-0.3 part of fiber; 0-50 parts of a pigment; and 60-560 parts of medium sand; and the auxiliary material and the dry mixture are mixed according to a certain proportion to prepare the adjustable 3D printing colored cement-based mixture. By controlling the proportion of cellulose ether, white cement, mineral powder, medium sand, fiber and pigment in the components of the 3D printing cement-based mixture, the adjustable 3D printing colored cement-based mixture is prepared, and the effects of improving the operability of 3D printing cement, meeting the rapid construction requirement and facilitating popularization and application of the 3D printing technology can be achieved.

Description

technical field [0001] The invention belongs to the field of building materials, and in particular relates to an adjustable 3D printing color cement-based mixture. Background technique [0002] In recent years, 3D printing technology has achieved remarkable development in the field of construction, because 3D printing technology has no need for templates, can use computer programming to realize personalized design of concrete components, and 3D printing uses computer program control to more accurately ensure the accuracy and quality of components, which is faster and more efficient. Obvious advantages such as the completion of production tasks. The key to 3D printing technology engineering practice is 3D printing cement. In order to improve urban vitality and promote landscape integration, the preparation of 3D printing cement-based mixture becomes necessary. 3D printing cement-based mixture can be used in various public places that can show the vitality of the city, such ...

Claims

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Application Information

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IPC IPC(8): C04B28/04C04B111/82
CPCC04B28/04C04B2111/82C04B2111/00181C04B18/08C04B24/383C04B14/06C04B16/0633C04B2103/54C04B2103/0068C04B2103/0085C04B14/48C04B16/0616C04B2103/10
Inventor 李晓静林晓波谭斌常琨李渭东徐闯殷玉春夏睿顾玮
Owner CHINA RAILWAY 23RD BUREAU GRP RAILTRANSIT ENG CO LTD
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