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Magnesite-based lightweight high-strength concrete for wallboard and preparation method thereof

A high-strength concrete and concrete technology, applied in the field of building materials, can solve problems such as poor durability, unsatisfactory thermal insulation and sound insulation performance, and achieve the effects of reducing production costs, improving durability, and improving seismic performance

Inactive Publication Date: 2018-12-11
HEFEI GUORUI INTEGRATED CONSTR TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of the embodiments of the present invention is to provide a magnesite-based lightweight high-strength concrete for wall panels and its preparation method, in order to solve the problems of poor durability of traditional magnesite walls and unsatisfactory thermal insulation and sound insulation performance

Method used

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preparation example Construction

[0034] The application also provides a preparation method of magnesite-based lightweight high-strength concrete for wall panels, said method comprising the steps of:

[0035] Weighing a certain amount of the magnesium chloride brine sheet or brine powder, put in water and stir to dissolve to prepare brine for subsequent use;

[0036] Test the Baume degree of brine;

[0037] Mixing and stirring the magnesium oxide, the brine, the anti-reflux agent, the anti-water agent and the hydroxypropyl methylcellulose weighed by metering;

[0038] Add the ceramsite, the fly ash and the silicon powder weighed according to the metering to the magnesium oxide, the brine, the anti-reflux agent, the water-resistant agent and the hydroxypropyl In the mixture of methylcellulose, continue to stir until evenly mixed.

[0039] In order to improve the durability of magnesite wallboard, prolong the service life of the building, and improve the thermal insulation and sound insulation performance of m...

Embodiment 1

[0043] In parts by weight, weigh 300 parts of magnesium oxide, 150 parts of magnesium chloride, 50 parts of fly ash, 20 parts of silicon powder, 0.5 parts of hydroxypropyl methylcellulose, 150 parts of fly ash ceramsite, 150 parts of water, GH -10 7 parts of anti-halogenation agent, 5 parts of anti-water agent.

[0044] The specific preparation method is as follows:

[0045] S1. Weigh a certain amount of the magnesium chloride halogen sheet or halogen powder, put in water and stir for 3 minutes, and dissolve for 24 hours to prepare bittern for later use;

[0046] S2. Test the Baume degree of brine;

[0047] S3. Mix and stir the magnesium oxide, the brine, the anti-reflux agent, the anti-water agent and the hydroxypropyl methylcellulose for 3 minutes;

[0048] S4. Add the ceramsite, the fly ash and the silicon powder weighed according to the metering to the magnesium oxide, the brine, the anti-halogenation agent, the water-resistance agent and the hydroxyl In the mixture of ...

Embodiment 2

[0051] In parts by weight, weigh 600 parts of magnesium oxide, 300 parts of magnesium chloride, 100 parts of fly ash, 50 parts of silicon fume, 1.0 part of hydroxypropyl methylcellulose, 400 parts of fly ash ceramsite, 350 parts of water, GH -10 15 parts of anti-halogenation agent, 15 parts of anti-water agent.

[0052] The specific preparation method is as follows:

[0053] S1. Weigh a certain amount of the magnesium chloride halogen sheet or halogen powder, put in water and stir for 5 minutes, and dissolve for 24 hours to prepare bittern for later use;

[0054] S2. Test the Baume degree of brine;

[0055] S3. Mix and stir the magnesium oxide, the brine, the anti-reflux agent, the anti-water agent and the hydroxypropyl methylcellulose for 5 minutes;

[0056] S4. Add the ceramsite, the fly ash and the silicon powder weighed according to the metering to the magnesium oxide, the brine, the anti-halogenation agent, the water-resistance agent and the hydroxyl In the mixture of ...

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Abstract

The invention discloses a magnesite-based lightweight high-strength concrete for wallboard and a preparation method thereof, the concrete is prepared from the following raw material components in parts by weight: 300 to 600 parts of magnesium oxide, 150 to 300 parts of magnesium chloride, 50 to 100 parts of coal ash, 20 to 50 parts of silicon powder, 0.5 to 1.0 part of hydroxypropyl methylcellulose, 150 to 400 parts of ceramsite, 150 to 350 parts of water, 7 to 15 parts of a halogenide-resistant agent and 5 to 15 parts of a water-resistant agent. The invention adopts the ceramsite with betterdurability as a filling aggregate, and adds auxiliary blending materials such as coal ash, silicon powder and the water-resistant agent to mitigate the problems of easy halogenation and poor water resistance of magnesite material self, which reduces the volume weight of a wallboard and improves the seismic performance of the wallboard without lowing the strength of concrete self, and in addition greatly improves the durability, thermal insulation property and sound insulation of the wallboard, thereby solving the problem of poor durability, unsatisfactory thermal insulation property and soundinsulation property of a traditional magnesite wall.

Description

technical field [0001] The invention relates to the field of building materials, in particular to a magnesite-based lightweight high-strength concrete for wall panels and a preparation method thereof. Background technique [0002] Magnesite products have developed rapidly in my country in recent years because of their excellent fire protection, high strength, and low production costs. More than 100 kinds of magnesite products have been developed, among which magnesite wallboards have also been obtained. However, the concrete used in traditional magnesite wall panels is mostly made of magnesium oxide and brine to make cementitious materials, and wood chips, straw, stone powder, etc. are used as fillers. This kind of concrete uses a lot of industrial and agricultural waste to protect the environment. , the cost is relatively low, but the bulk density of each square is basically above 1500kg, the heat insulation and sound insulation performance is not very ideal, and if the wood ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B28/32C04B111/27C04B111/28
CPCC04B28/32C04B2111/00017C04B2111/27C04B2111/28C04B18/08C04B18/146C04B24/383C04B18/027C04B22/142
Inventor 吴应兵仇多宏程佳江笠生
Owner HEFEI GUORUI INTEGRATED CONSTR TECH CO LTD
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