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Preparation and construction method of machine-sprayed phosphogypsum lightweight plastering mortar

A plastering mortar and phosphogypsum technology, applied in construction, building structure, covering/lining, etc., can solve the problems of easy bleeding of phosphogypsum mortar, poor phosphogypsum wrapping, rough surface morphology, etc., and achieve good adhesion Strength and anti-cracking effect, increase water retention effect, and improve the effect of anti-cracking ability

Inactive Publication Date: 2019-12-03
CHINA WEST CONSTR ACAD OF BUILDING MATERIALS CO LTD +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Publication No. CN 108793920A discloses a phosphogypsum-based lightweight plastering gypsum product. Phosphogypsum is used as a pure gelling material, accounting for more than 80%, and machine-made sand can be used as aggregate. However, in actual use, due to Manufactured sand is made of carbonate rocks mined by soil removal through mechanical crushing and screening. It is a polyhedral prism with rough surface morphology and poor gradation, which leads to easy bleeding of phosphogypsum mortar after adding water, poor phosphogypsum wrapping, and poor construction. poor performance

Method used

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  • Preparation and construction method of machine-sprayed phosphogypsum lightweight plastering mortar
  • Preparation and construction method of machine-sprayed phosphogypsum lightweight plastering mortar

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0040] In this embodiment, the preparation of 1 kg of machine-sprayed phosphogypsum lightweight plastering mortar is taken as an example, and the preparation method is as follows.

[0041] Weigh the ingredients according to the prescribed ratio, and the amount of each raw material is:

[0042] 85 parts of phosphogypsum, 5 parts of fine aggregate, 2 parts of inert admixture, 8 parts of vitrified microbeads, 0.1 part of retarder, 0.25 part of water retention agent, 0.05 part of anti-sagging agent (anti-sagging agent), strengthening agent 0.1 part, 0.4 part fiber, 0 part whitening agent.

[0043] Put the above-mentioned raw materials into the mixer in turn and mix them well. After they are fully mixed, the machine-sprayed plaster plaster mortar is obtained. When using, add a small amount of water to adjust and then machine-spray the construction.

[0044] The machine-sprayed plastering gypsum mortar obtained in the above examples was tested according to various technical perform...

Embodiment 2

[0046] In this embodiment, the preparation of 1 kg of machine-sprayed phosphogypsum lightweight plastering mortar is taken as an example, and the preparation method is as follows.

[0047] Weigh the ingredients according to the prescribed ratio, and the amount of each raw material is:

[0048] 85 parts of phosphogypsum, 5 parts of fine aggregate, 4 parts of inert admixture, 6 parts of vitrified microspheres, 0.08 part of retarder, 0.23 part of water retention agent, 0.04 part of anti-sagging agent (anti-sagging agent), strengthening agent 0.1 part, 0.4 part fiber, 0 part whitening agent.

[0049] Put the above-mentioned raw materials into the mixer in turn and mix them well. After they are fully mixed, the machine-sprayed plaster plaster mortar is obtained. When using, add a small amount of water to adjust and then machine-spray the construction.

[0050] The machine-sprayed plastering gypsum mortar obtained in the above examples was tested according to various technical perfor...

Embodiment 3

[0052] In this embodiment, the preparation of 1 kg of machine-sprayed phosphogypsum lightweight plastering mortar is taken as an example, and the preparation method is as follows.

[0053] Weigh the ingredients according to the prescribed ratio, and the amount of each raw material is:

[0054] 90 parts of phosphogypsum, 5 parts of fine aggregate, 1 part of inert admixture, 4 parts of vitrified microbeads, 0.1 part of retarder, 0.21 part of water retention agent, 0.04 part of anti-sagging agent (anti-sagging agent), strengthening agent 0.1 part, fiber 0.4 part, whitening agent 0.1 part.

[0055] Put the above-mentioned raw materials into the mixer in turn and mix them well. After they are fully mixed, the machine-sprayed plaster plaster mortar is obtained. When using, add a small amount of water to adjust and then machine-spray the construction.

[0056] The machine-sprayed plastering gypsum mortar obtained in the above examples was tested according to various technical perfor...

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Abstract

The invention discloses a preparation and construction method of machine-sprayed phosphogypsum lightweight plastering mortar. The machine-sprayed phosphogypsum lightweight plastering mortar is prepared from the following components in parts by weight: 75-85 parts of phosphogypsum, 10-15 parts of fine aggregate, 1-6 parts of an inert admixture, 4-8 parts of lightweight aggregate, 0.1-0.2 part of aretarder, 0.1-0.25 part of a water-retaining agent, 0.05-0.1 part of an anti-sagging agent, 0.1-0.3 part of an enhancer, 0.2-0.8 part of a fiber and 0-2 parts of a brightener. According to the preparation and construction method, phosphorus building gypsum (mainly composed of calcium sulfate hemihydrate) modified from solid waste slag phosphogypsum generated when phosphorite is treated with sulfuric acid in the process of phosphoric acid production is used as the main raw materials to prepare the machine-sprayed plastering gypsum mortar, the raw material cost is lowered, the construction efficiency and the construction quality are improved, the purpose of turning waste into treasure is achieved, great economic and social benefits are achieved, and the machine-sprayed phosphogypsum lightweight plastering mortar has a broad application prospect in construction engineering.

Description

technical field [0001] The invention relates to a preparation and construction method of machine-sprayed phosphogypsum lightweight plastering mortar, and belongs to the technical field of solid waste comprehensive treatment and treatment. Background technique [0002] Phosphogypsum is the solid waste generated when sulfuric acid is used to treat phosphate rock in the production of phosphoric acid. Its emissions are gradually increasing, and a small amount of phosphogypsum is used in the construction field, but the utilization rate is extremely low. Most of the phosphogypsum is still disposed of in landfills. , piled up like a mountain, not only occupy a lot of land, but also pollute the surrounding environment. [0003] In recent years, as energy saving and environmental protection have become the main trend of the development of the construction industry, gypsum plastering mortar has gradually replaced traditional cement mortar with its high cost performance, fast construct...

Claims

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Application Information

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IPC IPC(8): C04B28/14E04F13/02
CPCC04B28/143E04F13/02C04B2201/20C04B2201/50C04B2111/00482
Inventor 高育欣麻鹏飞杨文王军完么东智程宝军赵士豪班录江何欣何凯
Owner CHINA WEST CONSTR ACAD OF BUILDING MATERIALS CO LTD
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