Straw fiber-reinforcing spraying-type phosphorus gypsum-based fireproof mortar as well as preparation method and application thereof

A straw fiber and gypsum-based technology, which is applied in the field of building materials, can solve problems such as poor fire resistance, and achieve the effects of ensuring compression resistance, high structural strength and bonding strength, and improving fireproof temperature and thermal insulation effect.

Active Publication Date: 2018-12-18
MAANSHAN MCC17 ENG TECH CO LTD
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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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  • Straw fiber-reinforcing spraying-type phosphorus gypsum-based fireproof mortar as well as preparation method and application thereof
  • Straw fiber-reinforcing spraying-type phosphorus gypsum-based fireproof mortar as well as preparation method and application thereof
  • Straw fiber-reinforcing spraying-type phosphorus gypsum-based fireproof mortar as well as preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0043] The straw-fiber-reinforced spray-on 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 dissolved in 30°C oxalic acid aqueous solution with a mass fraction of 3%. Gypsum, after being stirred, placed in ultrasonic equipment for 25 minutes, then filtered, washed, and then dried at 30°C; the modified refractory cement is made by stirring and ultrasonically dispersing nano-silicon carbide and refractory cement obtained by processing, 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 1:17; kyanite in the kyanite mineral powder The mass proportion i...

Embodiment 2

[0055] The straw-fiber-reinforced spray-on 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 cementitious material is 10:4:7, and the modified phosphogypsum is dissolved in oxalic acid aqueous solution with a mass fraction of 4% at 35°C. Gypsum, after being stirred, placed in ultrasonic equipment for 28 minutes, then filtered, washed, and then dried at 32°C; the modified refractory cement is made by stirring and ultrasonically dispersing nano-silicon carbide and refractory cement obtained by processing, 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; kyanite in the kyanite mineral powder The mass proportion is 55%. ...

Embodiment 3

[0066] The straw-fiber-reinforced spray-on 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 dissolved in oxalic acid aqueous solution with a mass fraction of 5% at 40°C. Gypsum, after being stirred, placed in ultrasonic equipment for 32 minutes, then filtered, washed, and then dried at 38°C; the modified refractory cement is made by stirring and ultrasonically dispersing nano-silicon carbide and refractory cement obtained by processing, 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; kyanite in the kyanite mineral powder The mass proportion is 52%.

...

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Abstract

The invention discloses a straw fiber-reinforcing sprayspraying-type phosphorus gypsum-based fireproof mortar as well as a preparation method and application thereof, which belongs to the technical field of construction materials. The straw fiber-reinforcing sprayspraying-type phosphorus gypsum-based fireproof mortar is prepared from the following raw materials by weight percentage: 65 to 85 percent of composite cementing material, 10 to 30 percent of light-weight fine aggregates, 0.6 to 2.8 percent of carbon fibers, 0.2 to 1.5 percent of straw fibers, 0.4 to 2.5 percent of macromolecular polymer, 0.8 to 2.4 percent of an organic silane coupling agent, and 0.1 to 0.5 percent of a high-performance compound water reducing agent. The straw fiber-reinforcing spraying-type phosphorus gypsum-based fireproof mortar is characterized in thatBy adopting the technical scheme of the invention, the fireproof capability of the mortar can be effectively improved, so that the fire risk of the steel structural building can be reduced, and the mortar material is convenient in construction and application and firm in combination with the steel structural building.

Description

technical field [0001] The invention belongs to the technical field of building materials, and more specifically relates to a straw-fiber-reinforced spray-on phosphogypsum-based lightweight fireproof mortar and its preparation method and application. Background technique [0002] Steel structure buildings have a history of hundreds of years in foreign countries (especially in Europe, America, Japan, etc.), 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 and the advantages of high strength and good ductility of steel, steel structure buildings have the characteristics of light weight, good seismic performance, and large bearing capacity. At the same time, steel structures can be processed on site. The cycle is short, the material is recyclable and many other advantages. [0003] Under the guidance of national policies, the ...

Claims

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Application Information

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Patent Type & Authority Applications(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 MAANSHAN MCC17 ENG TECH CO LTD
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