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A kind of anhydrite-based lightweight plastering mortar and preparation method thereof

A technology for plastering mortar and anhydrite, which is applied in the field of lightweight gypsum plastering materials and their preparation, can solve the problems of affecting the quality and large-scale application of gypsum products, high impurity content of by-product gypsum, and no energy-saving effect. Achieve superior market competitiveness, suitable setting time and good thermal insulation performance

Active Publication Date: 2021-03-02
安徽合信大环保科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the high impurity content of the by-product gypsum and insufficient pretreatment greatly affect the quality and large-scale application of gypsum products. The construction quality problems caused by this generally cause plastering gypsum manufacturers to be highly vigilant, and some plastering In order to improve product quality, gypsum production enterprises are forced to independently build calcination production lines to ensure the quality of raw materials, which virtually increases the production cost of finished products
At the same time, the energy consumption and environmental pollution caused by the calcination of industrial by-product gypsum is also a common problem in its application, which does not reflect the energy-saving effect

Method used

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  • A kind of anhydrite-based lightweight plastering mortar and preparation method thereof
  • A kind of anhydrite-based lightweight plastering mortar and preparation method thereof
  • A kind of anhydrite-based lightweight plastering mortar and preparation method thereof

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Experimental program
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Effect test

Embodiment 1

[0022]

[0023] The anhydrite-based lightweight plastering mortar material composed in this embodiment has a short setting time, the initial setting time is greater than or equal to 3h, the final setting time is greater than or equal to 3.5h, and the initial and final setting time interval is short; the strength is high: the flexural strength is greater than Or equal to 2.5MPa, and the compressive strength is greater than or equal to 5MPa. Suitable for winter construction.

Embodiment 2

[0025]

[0026] The anhydrite-based lightweight plastering mortar material composed in this embodiment has a slightly longer setting time, the initial setting time is greater than or equal to 4h, the final setting time is greater than or equal to 4.5h, and the initial and final setting time interval is slightly longer; moderate strength: flexural strength Greater than or equal to 1.8MPa, compressive strength greater than or equal to 3.5MPa; small bulk density, less than or equal to 820kg / m 3 , the unit plastering area increases, showing a light effect. It is suitable for construction in high temperature environments less than or equal to 35°C in summer.

Embodiment 3

[0028]

[0029]

[0030] The anhydrite-based lightweight plastering mortar material composed in this embodiment has moderate setting, the initial setting time is greater than or equal to 3.5h, and the final setting time is greater than or equal to 4h; the strength is moderate: the flexural strength is greater than or equal to 2MPa, and the compressive strength is greater than or equal to Equal to 4MPa; the workability of the slurry is good, which is conducive to improving the construction efficiency; the bulk density is small, less than or equal to 850kg / m 3 '. Suitable for mechanized construction.

[0031] The preparation method of anhydrite-based lightweight plastering mortar in each embodiment is realized by the following steps:

[0032] 1) Grinding anhydrite to obtain anhydrite powder; the fineness of anhydrite powder is greater than or equal to 200 mesh, and the specific surface area is greater than or equal to 4000cm 2 / g.

[0033] 2) Weigh anhydrite powder, cem...

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Abstract

The invention discloses an anhydrite-based lightweight plastering mortar and a preparation method thereof. It is of great practical significance to develop and use anhydrite as the main material to prepare anhydrite-based lightweight plastering mortar with light weight, energy saving, good comprehensive performance, and simple process. The anhydrite-based lightweight plastering mortar of the present invention is composed of anhydrite, cement, fly ash, activator, vitrified microbeads, thickener and water-retaining agent, and the weight ratio of each component is as follows: anhydrite 65— 70 parts, 8-10 parts of cement, 4-8 parts of fly ash, 4-6 parts of activator, 0.15-0.2 parts of water-retaining agent, 0.1-0.15 parts of thickener, 13-16 parts of vitrified microbeads. The present invention uses anhydrite associated in the pyrite production process as the main material to prepare anhydrite-based lightweight plastering mortar, which does not require calcination, but only requires physical grinding and mixing. The preparation process is simple, energy is saved, and pollution is reduced; And it fundamentally solves the problem of hollowing and cracking of traditional mortar.

Description

technical field [0001] The invention is applied in the technical field of building materials, and in particular relates to a lightweight gypsum plastering material for the inner side of an outer wall, a compartment wall and an indoor ceiling and a preparation method thereof. Background technique [0002] With the in-depth promotion of national energy conservation and environmental protection policies, industrial by-product gypsum represented by calcined desulfurization gypsum is used as the main raw material to prepare semi-aqueous plastering gypsum, which has been widely developed and applied. However, the high impurity content of the by-product gypsum and insufficient pretreatment greatly affect the quality and large-scale application of gypsum products. The construction quality problems caused by this generally cause plastering gypsum manufacturers to be highly vigilant, and some plastering In order to improve product quality, gypsum production enterprises are forced to i...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C04B28/16C04B7/02C04B18/08C04B111/40C04B111/52
CPCC04B28/165C04B2111/40C04B2111/52C04B7/02C04B18/08C04B14/24C04B2103/44C04B24/383C04B14/104C04B22/142C04B22/064C04B2103/0007C04B2103/0022Y02W30/91
Inventor 俞小大俞迪夏宏林朱东方吴建军李祥飞张训华陈韦成徐睿夏明辉
Owner 安徽合信大环保科技有限公司
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