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Efflorescence inhibitor suitable for 3D printing cement-based material as well as use method and application of alkali efflorescence inhibitor

A technology of cement-based material and efflorescence inhibitor, applied in the direction of additive processing, can solve the problems of slow setting time, low strength, poor rheological properties, etc., to prevent deformation, good bearing capacity, and good extrusion performance. Effect

Inactive Publication Date: 2020-08-25
UNIV OF JINAN
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Traditional cement-based materials have low strength, slow setting time, and poor rheological properties are not suitable for 3D printing construction technology, and the poor anti-pan-alkali performance of decorative cement greatly limits its application development
In addition, some of the current admixtures for decorative cement are mainly aimed at the improvement of rheological setting time and mechanical properties, etc., which can only realize the printing of 3D printing decorative cement, and the problems of decorative performance in the later period (such as efflorescence) Phenomenon) is difficult to control, which greatly affects the decorative effect

Method used

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  • Efflorescence inhibitor suitable for 3D printing cement-based material as well as use method and application of alkali efflorescence inhibitor
  • Efflorescence inhibitor suitable for 3D printing cement-based material as well as use method and application of alkali efflorescence inhibitor
  • Efflorescence inhibitor suitable for 3D printing cement-based material as well as use method and application of alkali efflorescence inhibitor

Examples

Experimental program
Comparison scheme
Effect test

no. 1 example

[0029] A kind of pan-alkaline inhibitor suitable for 3D printing cement-based materials and its use, comprising the steps of:

[0030] (1) Based on the efflorescence inhibitor added in 1000 parts by weight of cement, each raw material is weighed to form the efflorescence inhibitor according to the following ratio: the solid component is 2 parts by weight of thickener, 30 parts by weight of admixture, nanomaterial 7 parts by weight, 10 parts by weight of coagulant, liquid components are 3 parts by weight of defoamer, 2.5 parts by weight of water reducing agent, 10 parts by weight of water repellent, 340 parts by weight of water, wherein:

[0031] The thickener is welan gum, and the effective substance content is greater than 99%.

[0032] The admixture is a mixture of silica fume and zeolite powder at a mass ratio of 1:2, wherein the whiteness of silica fume is greater than 87.5, the fineness is 100 mesh, and the fineness of zeolite powder is 80 mesh.

[0033] The nano-materia...

no. 2 example

[0044] A kind of pan-alkaline inhibitor suitable for 3D printing cement-based materials and its use, comprising the steps of:

[0045] (1) Based on the efflorescence inhibitor added in 1000 parts by weight of cement, each raw material is weighed according to the following ratio to form the efflorescence inhibitor: the solid component is 3 parts by weight of thickener, 20 parts by weight of admixture, nanomaterial 3 parts by weight, 15 parts by weight of coagulant, and the liquid components are 2.5 parts by weight of defoamer, 3 parts by weight of water reducing agent, 7 parts by weight of water repellent, and 450 parts by weight of water, wherein:

[0046] The thickener is welan gum, and the effective substance content is greater than 99%.

[0047] The admixture is a mixture of silica fume and zeolite powder at a mass ratio of 1:3, wherein the whiteness of silica fume is greater than 87.5, the fineness is 100 mesh, and the fineness of zeolite powder is 80 mesh.

[0048] The n...

no. 3 example

[0059] A kind of pan-alkaline inhibitor suitable for 3D printing cement-based materials and its use, comprising the steps of:

[0060] (1) Based on the efflorescence inhibitor added in 1000 parts by weight of cement, each raw material is weighed according to the following ratio to form the efflorescence inhibitor: the solid component is 4 parts by weight of thickener, 40 parts by weight of admixture, nanomaterial 2 parts by weight, 12 parts by weight of coagulant, and the liquid components are 2.5 parts by weight of defoamer, 3 parts by weight of water reducing agent, 7 parts by weight of water repellent, and 380 parts by weight of water, of which:

[0061] The thickener is welan gum, and the effective substance content is greater than 99%.

[0062] The admixture is a mixture of silica fume and zeolite powder at a mass ratio of 1:2.5, wherein the whiteness of silica fume is greater than 87.5, the fineness is 100 mesh, and the fineness of zeolite powder is 80 mesh.

[0063] Th...

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Abstract

The invention relates to the technical field of efflorescence inhibitors, in particular to an efflorescence inhibitor suitable for a 3D printing cement-based material and a use method and applicationof the efflorescence inhibitor; the inhibitor comprises a solid component and a liquid component which are separately stored; calculated by adding an efflorescence inhibitor into 1000 parts by weightof cement, the solid components comprise 2-5 parts by weight of a thickening agent, 20-70 parts by weight of an admixture, 2-7 parts by weight of a nano material and 8-15 parts by weight of a coagulant; and the liquid component comprises 2-3 parts by weight of a defoaming agent, 2-3 parts by weight of a water reducing agent and 5-10 parts by weight of a water repellent. The efflorescence inhibitor inhibits efflorescence phenomenon of cement from multiple aspects, including 1) reduction of generation of alkali and consumption of produced alkali, 2) improvement of compactness and reduction of porosity, 3) prevention of invasion of water, and 4) adsorption of free alkali, and the invention can finally control the efflorescence area to be 6% or below and even basically avoid efflorescence.

Description

technical field [0001] The invention relates to the technical field of pan-alkaline inhibitors, in particular to an pan-alkaline inhibitor suitable for 3D printing cement-based materials and its use and application. Background technique [0002] The information disclosed in this background section is only intended to increase the understanding of the general background of the present invention, and is not necessarily taken as an acknowledgment or any form of suggestion that the information constitutes the prior art already known to those skilled in the art. [0003] Since the advent of 3D printing technology in the 1980s, it has received widespread attention and research around the world. Many countries have created huge economic benefits and social wealth with this technology. In recent years, 3D printing technology has also been used in the field of building materials. Conduct preliminary research. Compared with traditional construction technology, 3D printing technology ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B24/42C04B28/02B33Y70/10
CPCB33Y70/10C04B28/02C04B40/0039C04B2111/00146C04B2111/00181C04B24/38C04B18/146C04B14/047C04B14/062C04B22/08C04B24/04C04B24/42C04B2103/302
Inventor 芦令超徐嘉宾陈明旭赵丕琪王守德宫晨琛
Owner UNIV OF JINAN