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High-wear-resistance gypsum-based self-leveling mortar and preparation method thereof

A self-leveling mortar, gypsum-based technology, applied in the field of building materials, can solve problems such as poor wear resistance and pockmarked surfaces

Inactive Publication Date: 2021-09-10
河南建筑材料研究设计院有限责任公司 +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The purpose of the present invention is to provide a kind of high wear-resistant gypsum-based self-leveling mortar and its preparation method, which is used to overcome the problem of poor wear resistance of gypsum-based self-leveling mortar in the above-mentioned prior art and easy peeling when used as surface material , sanding, pitted surface, and a large amount of industrial by-product gypsum is used in the preparation method of high wear-resistant gypsum-based self-leveling mortar, which is conducive to the solid waste treatment and resource recycling of industrial by-product gypsum, and protects the environment

Method used

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

Examples

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preparation example Construction

[0044] In order to further understand the high wear-resistant gypsum-based self-leveling mortar of the present invention, the present invention also provides a method for preparing a high-wear-resistant gypsum-based self-leveling mortar. The preparation method includes the following steps:

[0045] Step S1, weighing the aggregate and 50 parts of desulfurized building gypsum according to the ratio of raw materials, placing them in a pulverizer and grinding them to mix them evenly to obtain abrasives, and the particle size of the aggregates in the abrasives is below 0.16mm;

[0046] Step S2, weighing the rubber powder, retarder, water reducer, defoamer, and water retaining agent in container B according to the ratio of raw materials, and pre-mixing under stirring conditions to obtain a mixture;

[0047] Step S3: Weigh the modified reinforcing material and 50 parts of desulfurized building gypsum in container A according to the ratio of raw materials, then add the abrasive obtaine...

Embodiment 1

[0054] This embodiment provides a high wear-resistant gypsum-based self-leveling mortar. In terms of parts by mass, the gypsum-based self-leveling mortar includes the following raw material ratio: 100 parts of desulfurized building gypsum, 20 parts of modified reinforcing materials, and 90 parts of aggregate , 2.5 parts of rubber powder, 0.3 parts of retarder, 0.3 parts of water reducer, 0.2 parts of defoamer, 0.1 part of water retaining agent, and 40 parts of water.

[0055] The preparation method of the high wear-resistant gypsum-based self-leveling mortar in this example is as follows:

[0056] Step S1. Weigh 90 kg of steel slag and 50 kg of desulfurized construction gypsum according to the ratio of raw materials, place them in a pulverizer and grind them to mix them evenly to obtain abrasives, and the particle size of the steel slag in the abrasives is below 0.16 mm;

[0057] Step S2: Weigh 2.5kg of rubber powder, 0.3kg of retarder, 0.3kg of water reducer, 0.2kg of defoame...

Embodiment 2

[0061] This embodiment provides a high wear-resistant gypsum-based self-leveling mortar. In terms of parts by mass, the gypsum-based self-leveling mortar includes the following raw material ratio: 100 parts of desulfurized building gypsum, 25 parts of modified reinforcing materials, and 90 parts of aggregate , 2.5 parts of rubber powder, 0.3 parts of retarder, 0.3 parts of water reducer, 0.3 parts of defoamer, 0.1 part of water retaining agent, and 40 parts of water.

[0062] The preparation method of the high wear-resistant gypsum-based self-leveling mortar in this example is as follows:

[0063] Step S1. Weigh 90 kg of steel slag and 50 kg of desulfurized construction gypsum according to the ratio of raw materials, place them in a pulverizer and grind them to mix them evenly to obtain abrasives, and the particle size of the steel slag in the abrasives is below 0.16 mm;

[0064]Step S2. Weigh 2.5kg of rubber powder, 0.3kg of retarder, 0.3kg of water reducer, 0.3kg of defoamer...

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Abstract

The invention provides high-wear-resistance gypsum-based self-leveling mortar and a preparation method thereof. The high-wear-resistance gypsum-based self-leveling mortar is prepared from the following raw materials in parts by weight: 100 parts of desulfurized building gypsum, 20-25 parts of a modified reinforcing material, 80-100 parts of aggregate, 2-3 parts of rubber powder, 0.3-0.4 part of a retarder, 0.3-0.4 part of a water reducing agent, 0.2-0.3 part of a defoaming agent, 0.1-0.2 part of a water-retaining agent and 35-50 parts of water. The preparation method specifically comprises the following steps: grinding the aggregate and 50 parts of desulfurized building gypsum into a grinding material; premixing rubber powder, a retarder, a water reducing agent, a defoaming agent and a water-retaining agent to obtain a mixture; and mixing a modified reinforcing material and 50 parts of desulfurized building gypsum with the grinding material and the mixture, and then adding water and stirring to obtain the high-wear-resistance gypsum-based self-leveling mortar. The gypsum-based self-leveling mortar disclosed by the invention has the advantages of good flowability, relatively high early and later strength, no shrinkage crack caused by micro-expansion, strong adhesion with a substrate and the like, and is good in wear resistance.

Description

technical field [0001] The invention belongs to the technical field of building materials, and in particular relates to a high wear-resistant gypsum-based self-leveling mortar and a preparation method thereof. Background technique [0002] Gypsum-based self-leveling mortar is a gypsum-based indoor floor self-leveling material that is composed of hemihydrate gypsum as the main cementitious material, aggregate, filler and admixture and has certain fluidity in the freshly mixed state, commonly known as gypsum-based self-leveling mortar. It originated in Europe in the 1960s. In the 1980s, my country began to develop gypsum-based self-leveling mortar. In 2007, my country issued the industry standard "Gypsum-based self-leveling mortar" JC / T1023-2007. [0003] Gypsum-based self-leveling mortar has excellent workability, can be mechanically constructed, and improves construction efficiency. Compared with cement-based self-leveling mortar, gypsum-based self-leveling mortar can perfo...

Claims

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Application Information

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IPC IPC(8): C04B28/14C04B111/62
CPCC04B28/144C04B2111/62C04B2201/50C04B22/08C04B18/142C04B24/06C04B2103/0054C04B2103/302C04B24/383C04B2103/50
Inventor 曹晓润王韩张威杨子刘冬万成亮李骁男王治刘永川辛晓斌杨戈陈瑞晓蒋林葳
Owner 河南建筑材料研究设计院有限责任公司
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