High-strength gypsum-based self-leveling mortar and preparation method thereof

A self-leveling mortar and gypsum-based technology, applied in the field of inorganic non-metallic materials and building materials, can solve the problem of high strength of gypsum-based self-leveling mortar

Inactive Publication Date: 2019-10-11
BEIJING NEW BUILDING MATERIALS PLC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] This application provides a gypsum-based self-leveling mortar prepared by using α-hemihydrate gypsum. The strength of the gypsum-based self-leveling mortar is equivalent to that of cement-based self-leveling mortar, which solves the problem that the strength of gypsum-based self-leveling mortar is not as good as cement-based self-leveling mortar. The problem of high strength of flat mortar

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  • High-strength gypsum-based self-leveling mortar and preparation method thereof
  • High-strength gypsum-based self-leveling mortar and preparation method thereof
  • High-strength gypsum-based self-leveling mortar and preparation method thereof

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[0021] The embodiment of the present application provides a preparation method of high-strength gypsum-based self-leveling mortar, such as figure 1 As shown, the shown method includes the following steps: mixing α hemihydrate gypsum, other cementitious materials except α hemihydrate gypsum, fineness of 40-70 mesh and 70-140 mesh ore and admixture evenly, Add water, soak for a period of time, stir for a period of time. The gypsum-based self-leveling mortar was obtained.

[0022] Preparation of gypsum-based self-leveling mortar:

Embodiment 1

[0024] (1) Take 1360 grams of α hemihydrate gypsum, 600 grams of 40-70 mesh mineral sand, 600 grams of 70-140 mesh mineral sand, 200 grams of cement, 400 grams of heavy calcium, 80 grams of rubber powder, 4.8 grams of water reducing agent, retarder 0.8 grams of agent, 1.6 grams of water retaining agent, 1.6 grams of defoamer, mix well.

[0025] (2) Add the uniformly mixed mixture in step (1) into 720ml of water, soak for 30s, and stir for 3min to prepare a gypsum-based self-leveling mortar.

Embodiment 2

[0027] (1) Take 1200 grams of α hemihydrate gypsum, 638 grams of ore sand of 40-70 mesh, 637 grams of ore sand of 70-140 mesh, 188 grams of cement, 375 grams of heavy calcium, 75 grams of rubber powder, 5.6 grams of water reducing agent, retarding 0.75 grams of agent, 1.5 grams of water retaining agent, 1.5 grams of defoamer, mix well.

[0028] (2) Add the uniformly mixed mixture in step (1) into 638ml of water, soak for 40s, and stir for 4min to prepare a gypsum-based self-leveling mortar.

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Abstract

The invention provides high-strength gypsum-based self-leveling mortar. The gypsum-based self-leveling mortar comprises alpha hemihydrate gypsum and two types of mineral sand with different fineness.The invention also provides a preparation method of the high-strength gypsum-based self-leveling mortar. The method includes the following steps: evenly mixing the alpha hemihydrate gypsum, binding materials other than the alpha hemihydrate gypsum, the mineral sand with the different fineness and admixtures, adding the mixture to water, and respectively performing impregnating and stirring for a while. The gypsum-based self-leveling mortar prepared by the method has the strength as high as cement-based self-leveling mortar.

Description

technical field [0001] The present application relates to but not limited to the technical field of inorganic non-metallic materials and building materials, in particular to but not limited to a high-strength gypsum-based self-leveling mortar and a preparation method thereof. Background technique [0002] Self-leveling mortar is a building floor self-leveling material formed by mixing cementitious material as the base material with aggregate and various admixtures. The characteristic of self-leveling mortar is that it has good fluidity, and it can flow freely to form a plane under the action of its own weight and self-expansion stress, so as to accurately level the ground in a large area in a short time, which brings great benefits to the application of some engineering materials. help. [0003] Self-leveling mortar includes inorganic self-leveling mortar and organic self-leveling mortar, and inorganic self-leveling mortar includes cement-based self-leveling mortar and gyps...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B28/14
CPCC04B28/146C04B2201/50C04B14/06C04B7/00C04B14/28C04B2103/44C04B2103/302C04B2103/22C04B2103/50C04B2103/465
Inventor 张晓菲陈红霞王霞李帆戚婷婷肖文韬简铭
Owner BEIJING NEW BUILDING MATERIALS PLC
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