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A straw-fiber-reinforced spray-on phosphogypsum-based fireproof mortar and its preparation method and application

A straw fiber and gypsum-based technology, which is applied in the field of building materials, can solve the problems of poor fire performance and achieve the effects of ensuring compression resistance, high structural strength and bonding strength, and improving comfort

Active Publication Date: 2019-07-12
CHINA MCC17 GRP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] The purpose of the present invention is to overcome the relatively poor fireproof performance of existing steel structure buildings, and to provide a straw-fiber-reinforced spray-on phosphogypsum-based lightweight fireproof mortar and its preparation method and application

Method used

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  • A straw-fiber-reinforced spray-on phosphogypsum-based fireproof mortar and its preparation method and application
  • A straw-fiber-reinforced spray-on phosphogypsum-based fireproof mortar and its preparation method and application
  • A straw-fiber-reinforced spray-on phosphogypsum-based fireproof mortar and its preparation method and application

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Effect test

Embodiment 1

[0043] The straw-fiber-reinforced spray-type phosphogypsum-based fireproof mortar of this embodiment is prepared from the following raw materials according to weight percentage:

[0044]

[0045]

[0046] Among them, the mass ratio of modified phosphogypsum, modified refractory cement and kyanite mineral powder in the composite cementitious material is 6:4:5, and the modified phosphogypsum is a 3% mass fraction of 30℃ oxalic acid aqueous solution to dissolve phosphorus Gypsum is agitated and placed in an ultrasonic device for 25 minutes, then filtered, washed and dried at 30°C; the modified refractory cement is made by mixing nano-silicon carbide and refractory cement for agitation and ultrasonic dispersion The refractory cement is low-calcium aluminate refractory cement or calcium-magnesium aluminate cement, and the mass ratio of nanometer silicon carbide and refractory cement is 1:17; the kyanite in the kyanite mineral powder The quality ratio is 40%.

[0047] In this embodiment...

Embodiment 2

[0055] The straw-fiber-reinforced spray-type phosphogypsum-based fireproof mortar of this embodiment is prepared from the following raw materials according to weight percentage:

[0056]

[0057] Among them, the mass ratio of modified phosphogypsum, modified refractory cement and kyanite mineral powder in the composite cementing material is 10:4:7, and the modified phosphogypsum is a 4% mass fraction of oxalic acid aqueous solution at 35°C to dissolve phosphorus Gypsum, after being stirred, placed in an ultrasonic device for 28 minutes, then filtered, washed, and dried at 32°C; the modified refractory cement is made by mixing nano-silicon carbide and refractory cement with ultrasonic dispersion Processed, wherein the refractory cement is low calcium aluminate refractory cement or calcium magnesium aluminate cement, and the mass ratio of nano-silicon carbide and refractory cement is 1:20; the kyanite in the kyanite mineral powder The quality ratio is 55%.

[0058] In this embodimen...

Embodiment 3

[0066] The straw-fiber-reinforced spray-type phosphogypsum-based fireproof mortar of this embodiment is prepared from the following raw materials according to weight percentage:

[0067]

[0068] Among them, the mass ratio of modified phosphogypsum, modified refractory cement and kyanite mineral powder in the composite cementitious material is 4:2:3, and the modified phosphogypsum is a 5% mass fraction of oxalic acid aqueous solution at 40℃ to dissolve phosphorus Gypsum is agitated and placed in an ultrasonic device for 32 minutes of ultrasound, then filtered, washed, and dried at 38°C; the modified refractory cement is made by mixing nano-silicon carbide and refractory cement with ultrasonic dispersion Processed, wherein the refractory cement is low calcium aluminate refractory cement or calcium magnesium aluminate cement, and the mass ratio of nano-silicon carbide and refractory cement is 1:18; the kyanite in the kyanite mineral powder The quality ratio is 52%.

[0069] In this ...

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Abstract

The invention discloses straw-fiber-reinforced spray-coating phosphogypsum-based fireproof mortar as well as a preparation method and application thereof, belonging to the technical field of building materials. A straw-fiber-reinforced spray-coating phosphogypsum-based fireproof mortar of the present invention is prepared from the following raw materials according to weight percentage: 65-85% of composite cementitious material, 10-30% of lightweight fine aggregate, and 0.6-2.8% of carbon fiber %, 0.2-1.5% of straw fiber, 0.4-2.5% of polymer, 0.8-2.4% of organic silane coupling agent, and 0.1-0.5% of high-performance compound water reducer. The technical solution of the invention can effectively improve the fire prevention ability of the mortar, thereby reducing the fire risk of the steel structure building. At the same time, the mortar material is easy to use in construction and firmly combined with the steel structure building.

Description

Technical field [0001] The invention belongs to the technical field of building materials, and more specifically, relates to a straw fiber-reinforced spraying type phosphogypsum-based light fireproof mortar, and a preparation method and application thereof. Background technique [0002] Steel structure buildings have a history of hundreds of years in foreign countries (especially Europe, America, Japan and other countries), and account for more than 50% of the total domestic construction volume. In China, steel structure buildings have not yet formed a scale. However, with the surplus of domestic steel production in China, as well as the advantages of high strength and good ductility of steel, steel structures have the characteristics of light weight, good seismic performance, and large bearing capacity. At the same time, steel structures can be processed and constructed on site. The cycle is short, the material is recyclable and many other advantages. [0003] Under the guidance ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C04B28/14C04B111/28
CPCC04B28/143C04B2111/28C04B2201/20C04B2201/32C04B2201/50C04B7/00C04B14/041C04B18/021C04B14/22C04B14/202C04B14/386C04B18/24C04B24/42C04B2103/302C04B24/24
Inventor 钱元弟金仁才雷团结王孝平王慧李亚辉黄维军
Owner CHINA MCC17 GRP
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