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Preparation method of gypsum-based self-leveling floor material

A technology of gypsum-based and base materials, which is applied in the direction of architecture, building structure, floor, etc. It can solve the problems of no pattern or painted pattern, poor water resistance and wear resistance, and easy cracks, etc., to achieve good decorative effect and water resistance. Improved performance and wear resistance, improved compatibility

Active Publication Date: 2018-12-07
BEIJING NEW BUILDING MATERIALS PLC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Gypsum-based floor mortar currently has the problems of poor water resistance and wear resistance, and cracks are prone to appear after drying
Moreover, the ground paved with gypsum-based self-leveling floor mortar is the true color of gypsum-based cementitious materials, with a single color and no patterns or painted patterns.

Method used

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  • Preparation method of gypsum-based self-leveling floor material
  • Preparation method of gypsum-based self-leveling floor material
  • Preparation method of gypsum-based self-leveling floor material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0042] 1. Prepare α-high-strength gypsum-based materials: weigh 1kg α-high-strength gypsum and 0.03kg red red mud, and mix them evenly; test the standard consistency water consumption, initial setting and final setting time of α-high-strength gypsum-based materials;

[0043] 2. Prepare the first gypsum-based self-leveling floor mortar: weigh 1kg of ordinary gypsum, 0.12kg of Portland cement, 0.002kg of retarder, 0.007kg of water reducing agent, 0.02kg of redispersible latex powder, and 0.0005kg of cellulose Ether, mix well;

[0044] 3. Deploy the second gypsum-based self-leveling floor mortar:

[0045] (1) First, the purchased calcium sulfate whiskers (purchased from Jiangsu Yifu New Material Technology Co., Ltd.) are modified: 1kg of calcium sulfate whiskers are dried at 90-100°C for 5h; The silane coupling agent is mixed in a high-speed mixer for 1 min, so that part of the silane coupling agent is coated on the surface of the calcium sulfate whisker;

[0046] (2) Weigh 1kg o...

Embodiment 2

[0061] The only difference between this embodiment and embodiment 1 is that the third interface agent is a self-made interface agent, and when the interface agent is coated on both sides of the shaping frame, roughening treatment is required.

[0062] Steps for homemade interface agent:

[0063] (1) Weigh 0.5kgα high-strength gypsum, 0.5kg ordinary gypsum, 0.03kg Portland cement, 0.03kg sulphoaluminate cement, 0.1kg latex powder, and mix well;

[0064] (2) Weigh 3kg of EL1230S high-strength interface agent, weigh 2kg of mixing water, and mix evenly;

[0065] (3) Mix the premixed powder obtained in step 1 and the liquid obtained in step 2 evenly, and let stand to obtain the interface agent.

Embodiment 3

[0067] The difference between this embodiment and Embodiment 1 is that there is no calcium sulfate whisker in the second gypsum-based self-leveling floor mortar formula.

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Abstract

A preparation method of a gypsum-based self-leveling floor material comprises the following steps: adding mineral pigment into alpha high-strength gypsum, and blending into an alpha high-strength gypsum-based material with a desired color; cleaning the base surface, brushing the base surface with a first interface agent, laying a slurry which is formed by adding water into a first gypsum-based self-leveling floor mortar; after the slurry formed by adding water into the first gypsum-based self-leveling floor mortar is completely hardened, performing shaping on the surface of the hardened slurryby using a slurry formed by adding water to the high-strength gypsum-based material, so as to form a shaping framework with a desired shape; after the shaping framework finally sets, injecting a slurry formed by adding water to the second gypsum-based self-leveling floor mortar into the inner part and the outer part of the shaping framework, so that the slurry is flush with the top of the shapingframework; defoaming; and maintaining. The gypsum-based self-leveling floor material prepared by the method disclosed by the invention is attractive in appearance, good in water resistance and wear resistance and not easy to crack.

Description

technical field [0001] This application relates to but not limited to the field of building materials, in particular but not limited to a preparation method of a gypsum-based self-leveling floor material with special-shaped effects or painted patterns. Background technique [0002] Gypsum has the characteristics of short setting time, good molding effect, and beautiful appearance. It is a commonly used building material for decoration. The surface layer gypsum-based self-leveling floor mortar has the advantages of high construction efficiency, environmental protection, energy saving, and small shrinkage rate. It has developed rapidly in my country in recent years. This mortar is mainly suitable for large-area outdoor parking lots, office buildings, etc., or indoor floors that are eager to move in and renovate. Gypsum-based floor mortar currently still has the problems of poor water resistance and wear resistance, and cracks are prone to appear after drying. Moreover, the g...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B28/14C04B20/10E04F15/12
CPCC04B20/1051C04B28/14E04F15/12C04B18/0409C04B7/02C04B2103/22C04B2103/302C04B2103/0057C04B24/383C04B14/383C04B16/0633
Inventor 王丽王鹏起周建中冉秀云
Owner BEIJING NEW BUILDING MATERIALS PLC
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