阅读说明：本技术 一种可调性3d打印彩色水泥基混料 (Adjustable 3D printing color cement-based mixed material ) 是由 李晓静 林晓波 谭斌 常琨 李渭东 徐闯 殷玉春 夏睿 顾玮 于 2021-02-03 设计创作，主要内容包括：本发明公开了一种可调性3D打印彩色水泥基混料,其技术方案要点是：包括干混料和辅助料,所述干混料包括以下重量计组分：白水泥50-200份；矿粉10-80份；纤维素醚0.09-0.42份；纤维0.01-0.3份；颜料0-50份；中砂60-560份；所述辅助料与所述干混料通过一定比例混合制得所述可调性3D打印彩色水泥基混料；通过控制3D打印水泥基混料成分中的纤维素醚、白水泥、矿粉、中砂、纤维以及颜料之间的比例,制作本发明的可调性3D打印彩色水泥基混料,可达到提高3D打印水泥操作性,满足快速施工需求,利于3D打印技术普及运用的效果。(The invention discloses an adjustable 3D printing color cement-based mixed material, which has the technical scheme that: the material comprises a dry mixture and an auxiliary material, wherein the dry mixture comprises the following components in parts 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 pigment; 60-560 parts of medium sand; the auxiliary material and the dry mixture are mixed according to a certain proportion to prepare the adjustable 3D printing color cement-based mixed material; 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 mixed material, the adjustable 3D printing color cement-based mixed material disclosed by the invention is prepared, so that the operability of 3D printing cement can be improved, the requirement on quick construction can be met, and the popularization and application effects of a 3D printing technology can be facilitated.)

1. The utility model provides a chromatic cement base compounding of adjustability 3D printing which characterized in that, includes dry blend and auxiliary material, the dry blend includes the following component 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 pigment;

60-560 parts of medium sand;

the adjustable 3D printing color cement-based mixed material is prepared by mixing the auxiliary material and the dry material according to a certain proportion.

2. The tunability 3D printing a color cement-based compound according to claim 1, wherein: the auxiliary materials comprise one or more of a coagulation accelerator, a water reducing agent, an antifoaming agent, a redispersible latex powder, a stabilizer, a thixotropic agent, an early strength agent and water.

3. The tunability 3D printing a color cement-based compound according to claim 1, wherein: the white cement is white Portland cement, the whiteness of the white cement is greater than 88, and the initial setting time of the white cement is greater than 45 min.

4. The tunability 3D printing a color cement-based compound according to claim 1, wherein: the 7d activity index of the ore powder is more than 95%, and the SO3 content in the ore powder is more than 4%.

5. The tunability 3D printing a color cement-based compound according to claim 1, wherein: the medium sand is quartz sand, and the particle size of the medium sand is less than or equal to 0.15 mm.

6. The tunability 3D printing a color cement-based compound according to claim 1, wherein: the pigment is any one of inorganic pigment or organic pigment.

7. The tunability 3D printing a color cement-based compound according to claim 5, wherein: the cellulose ether is hydroxypropyl methyl cellulose HPMC.

8. The tunability 3D printing a color cement-based compound according to claim 1, wherein: the fiber is one or a combination of more of polypropylene fiber, pvc fiber, basalt fiber, steel fiber and carbon fiber.

Technical Field

The invention belongs to the field of building materials, and particularly relates to an adjustable 3D printing color cement-based mixed material.

Background

In recent years, 3D printing technology is remarkably developed in the field of buildings, and the 3D printing technology has the obvious advantages that templates are not needed, individualized design of concrete members can be realized by utilizing computer programming, the precision and quality of the members can be more accurately guaranteed by adopting computer program control in 3D printing, production tasks can be completed more quickly and efficiently, and the like. The key to 3D printing technical engineering practice is 3D printing of cement. In order to improve the urban vitality and promote landscape fusion, the preparation of 3D printing cement-based mixed materials becomes necessary. The 3D printed cement-based mixed material can be used for various public places such as color footpaths, seats, bridge railings, plant walls, bus platforms, subway advertisement walls and the like, which can show the urban vitality.

Reference may be made to chinese patent publication No. CN111689747A, which discloses a color decoration mortar for 3D printing, comprising: 80-100 parts of white high-alumina cement, 150 parts of fine sand, 50-100 parts of coarse sand, 30-50 parts of high-strength gypsum powder, 10-20 parts of polyacrylate emulsion, 10-20 parts of inorganic pigment, 5-10 parts of polycarboxylic acid water reducing agent, 5-10 parts of wood fiber, 5-10 parts of volume stabilizer, 10-20 parts of special thixotropic agent for 3D printing, 5-10 parts of early strength agent, 5-10 parts of retarder and 50-70 parts of water. The invention adopts white high-alumina cement, the whiteness is more than 88, and the 3-day compressive strength is not lower than 50.0 MPa; the whiteness is better than the fresh expression of the color of the inorganic pigment, and the white high-alumina cement has higher setting speed and higher early strength than the ordinary portland cement.

The above patent has the mortar that promotes to condense faster and possess higher early strength, has still added auxiliaries such as special thixotropic agent, early strength agent, volume stabilizer of 3D printing in addition, makes the mortar raw materials be applicable to 3D and prints, and early strength is high, and later stage intensity develops stable advantage, but it also has the defect, such as: most of the components of the formula are complex, the operability is not strong, the requirement of rapid construction is not met, and the popularization and the application of a 3D printing technology are not facilitated.

Disclosure of Invention

The invention aims to provide an adjustable 3D printing color cement-based mixed material to solve the problems in the background art.

In order to achieve the purpose, the invention provides the following technical scheme:

an adjustability 3D prints colored cement base compounding, includes dry blend and auxiliary material, the dry blend includes the following component 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 pigment;

60-560 parts of medium sand;

the adjustable 3D printing color cement-based mixed material is prepared by mixing the auxiliary material and the dry material according to a certain proportion.

Preferably, the auxiliary materials include one or more of a set accelerator, a water reducing agent, an antifoaming agent, a redispersible latex powder, a stabilizer, a thixotropic agent, an early strength agent and water.

Preferably, the white cement is white portland cement, the whiteness of the white cement is greater than 88, and the initial setting time of the white cement is greater than 45 min.

Preferably, the 7d activity index of the ore powder is more than 95%, and the SO3 content in the ore powder is more than 4%.

Preferably, the medium sand is quartz sand, and the particle size of the medium sand is less than or equal to 0.15 mm.

Preferably, the pigment is any one of an inorganic pigment or an organic pigment.

Preferably, the cellulose ether is hydroxypropyl methylcellulose HPMC.

Preferably, the fiber is one or a combination of several of polypropylene fiber, pvc fiber, basalt fiber, steel fiber and carbon fiber.

Compared with the prior art, the invention has the beneficial effects that:

when the adjustable 3D printing color cement-based mixed material is used, the adjustable 3D printing color cement-based mixed material is prepared by controlling the proportion of cellulose ether, white cement, mineral powder, medium sand, fibers and pigments in the components of the 3D printing cement-based mixed material, so that the operability of 3D printing cement can be improved, the requirement of quick construction can be met, and the popularization and application effects of a 3D printing technology can be facilitated.

Detailed Description

Technical solutions in the embodiments of the present invention are clearly and completely described, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Example 1

The utility model provides a chromatic cement base compounding of adjustability 3D printing, includes dry blend and auxiliary material, and the dry blend includes the following component by weight:

85 parts of white cement;

25 parts of mineral powder;

0.3 part of cellulose ether;

0.2 part of fiber;

2 parts of pigment;

65 parts of medium sand;

the auxiliary material and the dry mixture pass through a mixer 2: 3, mixing the materials in a mass ratio to obtain the adjustable 3D printing color cement-based mixed material.

In this embodiment, it is preferable that the auxiliary material includes a stabilizer.

In this embodiment, it is preferable that 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 min.

In this embodiment, preferably, the 7d activity index of the ore fines is 96.5%, and the SO3 content in the ore fines is 8%.

In this embodiment, the medium sand is preferably quartz sand, and the particle size of the medium sand is 0.15 mm.

In this embodiment, the pigment is preferably an organic pigment.

In this embodiment, the cellulose ether is preferably hydroxypropyl methylcellulose HPMC.

In this embodiment, the fibers are preferably polypropylene fibers.

The invention has the beneficial effects that:

when the adjustable 3D printing color cement-based mixed material is used, the adjustable 3D printing color cement-based mixed material is prepared by controlling the proportion of cellulose ether, white cement, mineral powder, medium sand, fibers and pigments in the components of the 3D printing cement-based mixed material, so that the operability of 3D printing cement can be improved, the requirement of quick construction can be met, and the popularization and application effects of a 3D printing technology can be facilitated.

Example 2

The utility model provides a chromatic cement base compounding of adjustability 3D printing, includes dry blend and auxiliary material, and the dry blend includes the following component by weight:

200 parts of white cement;

80 parts of mineral powder;

0.42 part of cellulose ether;

0.3 part of fiber;

2 parts of pigment;

95 parts of medium sand;

the auxiliary material and the dry mixture pass through a mixer 2: 3, mixing the materials in a mass ratio to obtain the adjustable 3D printing color cement-based mixed material.

In this embodiment, it is preferable that the auxiliary material includes a thixotropic agent.

In this embodiment, it is preferable that 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 min.

In this embodiment, preferably, the 7d activity index of the ore fines is 99%, and the SO3 content in the ore fines is 8%.

In this embodiment, the medium sand is preferably quartz sand, and the particle size of the medium sand is 0.09 mm.

In this embodiment, the pigment is preferably an organic pigment.

In this embodiment, the cellulose ether is preferably hydroxypropyl methylcellulose HPMC.

In this embodiment, the fibers are preferably steel fibers.

The invention has the beneficial effects that:

when the adjustable 3D printing color cement-based mixed material is used, the adjustable 3D printing color cement-based mixed material is prepared by controlling the proportion of cellulose ether, white cement, mineral powder, medium sand, fibers and pigments in the components of the 3D printing cement-based mixed material, so that the operability of 3D printing cement can be improved, the requirement of quick construction can be met, and the popularization and application effects of a 3D printing technology can be facilitated.

Example 3

The utility model provides a chromatic cement base compounding of adjustability 3D printing, includes dry blend and auxiliary material, and the dry blend includes the following component by weight:

50 parts of white cement;

10 parts of mineral powder;

0.09 part of cellulose ether;

0.01 part of fiber;

1 part of pigment;

60 parts of medium sand;

the auxiliary material and the dry mixture pass through a mixer 2: 3, mixing the materials in a mass ratio to obtain the adjustable 3D printing color cement-based mixed material.

In this embodiment, the adjuvant preferably comprises an early strength dose.

In this embodiment, it is preferable that 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 min.

In this embodiment, preferably, the 7d activity index of the ore fines is 97%, and the SO3 content in the ore fines is 9%.

In this embodiment, the medium sand is preferably quartz sand, and the particle size of the medium sand is 0.1 mm.

In this embodiment, the pigment is preferably an inorganic pigment.

In this embodiment, the cellulose ether is preferably hydroxypropyl methylcellulose HPMC.

In this embodiment, the fibers are preferably pvc fibers.

The invention has the beneficial effects that:

when the adjustable 3D printing color cement-based mixed material is used, the adjustable 3D printing color cement-based mixed material is prepared by controlling the proportion of cellulose ether, white cement, mineral powder, medium sand, fibers and pigments in the components of the 3D printing cement-based mixed material, so that the operability of 3D printing cement can be improved, the requirement of quick construction can be met, and the popularization and application effects of a 3D printing technology can be facilitated.

Example 4

The utility model provides a chromatic cement base compounding of adjustability 3D printing, includes dry blend and auxiliary material, and the dry blend includes the following component by weight:

200 parts of white cement;

80 parts of mineral powder;

0.42 part of cellulose ether;

0.3 part of fiber;

5 parts of pigment;

85 parts of medium sand;

the auxiliary material and the dry mixture pass through a mixer 2: 3, mixing the materials in a mass ratio to obtain the adjustable 3D printing color cement-based mixed material.

In this embodiment, it is preferable that the auxiliary material includes an antifoaming agent.

In this embodiment, it is preferable that the white cement is white portland cement, the whiteness of the white cement is 98, and the initial setting time of the white cement is 55 min.

In this embodiment, preferably, the 7d activity index of the ore fines is 98%, and the SO3 content in the ore fines is 8%.

In this embodiment, the medium sand is preferably quartz sand, and the particle size of the medium sand is 0.15 mm.

In this embodiment, the pigment is preferably an organic pigment.

In this embodiment, the cellulose ether is preferably hydroxypropyl methylcellulose HPMC.

In this embodiment, the fibers are preferably carbon fibers.

The invention has the beneficial effects that:

when the adjustable 3D printing color cement-based mixed material is used, the adjustable 3D printing color cement-based mixed material is prepared by controlling the proportion of cellulose ether, white cement, mineral powder, medium sand, fibers and pigments in the components of the 3D printing cement-based mixed material, so that the operability of 3D printing cement can be improved, the requirement of quick construction can be met, and the popularization and application effects of a 3D printing technology can be facilitated.

Example 5

The utility model provides a chromatic cement base compounding of adjustability 3D printing, includes dry blend and auxiliary material, and the dry blend includes the following component by weight:

50 parts of white cement;

10 parts of mineral powder;

0.09 part of cellulose ether;

0.01 part of fiber;

5 parts of pigment;

85 parts of medium sand;

the auxiliary material and the dry mixture pass through a mixer 2: 3, mixing the materials in a mass ratio to obtain the adjustable 3D printing color cement-based mixed material.

In this embodiment, preferably, the auxiliary material includes a water reducing agent.

In this embodiment, it is preferable that the white cement is white portland cement, the whiteness of the white cement is 98, and the initial setting time of the white cement is 48 min.

In this embodiment, preferably, the 7d activity index of the ore fines is 98%, and the SO3 content in the ore fines is 5%.

In this embodiment, the medium sand is preferably quartz sand, and the particle size of the medium sand is 0.12 mm.

In this embodiment, the pigment is preferably an inorganic pigment.

In this embodiment, the cellulose ether is preferably hydroxypropyl methylcellulose HPMC.

In this embodiment, the fibers are preferably basalt fibers.

The invention has the beneficial effects that:

when the adjustable 3D printing color cement-based mixed material is used, the adjustable 3D printing color cement-based mixed material is prepared by controlling the proportion of cellulose ether, white cement, mineral powder, medium sand, fibers and pigments in the components of the 3D printing cement-based mixed material, so that the operability of 3D printing cement can be improved, the requirement of quick construction can be met, and the popularization and application effects of a 3D printing technology can be facilitated.

Example 6

The utility model provides a chromatic cement base compounding of adjustability 3D printing, includes dry blend and auxiliary material, and the dry blend includes the following component by weight:

50 parts of white cement;

10 parts of mineral powder;

0.2 part of cellulose ether;

0.1 part of fiber;

2 parts of pigment;

65 parts of medium sand;

the auxiliary material and the dry mixture pass through a mixer 2: 3, mixing the materials in a mass ratio to obtain the adjustable 3D printing color cement-based mixed material.

In this embodiment, preferably, the auxiliary material includes an accelerator.

In this embodiment, it is preferable that 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 55 min.

In this embodiment, preferably, the 7d activity index of the ore fines is 98%, and the SO3 content in the ore fines is 6%.

In this embodiment, the medium sand is preferably quartz sand, and the particle size of the medium sand is 0.15 mm.

In this embodiment, the pigment is preferably an inorganic pigment.

In this embodiment, the cellulose ether is preferably hydroxypropyl methylcellulose HPMC.

In this embodiment, the fibers are preferably polypropylene fibers.

The invention has the beneficial effects that:

when the adjustable 3D printing color cement-based mixed material is used, the adjustable 3D printing color cement-based mixed material is prepared by controlling the proportion of cellulose ether, white cement, mineral powder, medium sand, fibers and pigments in the components of the 3D printing cement-based mixed material, so that the operability of 3D printing cement can be improved, the requirement of quick construction can be met, and the popularization and application effects of a 3D printing technology can be facilitated.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.