High-toughness, high-strength and low-wet-expansion fiber cement external wall panel and preparation method thereof

A technology of fiber cement and exterior wall panels, applied in the field of building materials, can solve the problems of high toughness, high strength, low humidity expansion and weather resistance, etc., and achieve the effects of high water saturated flexural strength, high product cost performance, and strong market competitiveness

Active Publication Date: 2022-01-25
WUHAN BUILDING MATERIAL IND DESIGN & RES INST
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to overcome the problem that the existing fiber cement exterior wall panels cannot simultaneously have many characteristi

Method used

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  • High-toughness, high-strength and low-wet-expansion fiber cement external wall panel and preparation method thereof

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Experimental program
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Effect test

Embodiment 1

[0030] This embodiment provides a high-toughness, high-strength, low-swelling fiber cement exterior wallboard, including the following components in parts by weight: 29 parts of cement, 33 parts of quartz sand, 8 parts of quartz powder, 4 parts of micro-silica fume, powder 18 parts of coal ash, 14 parts of limestone powder, 1 part of aluminum hydroxide, 4 parts of mica powder, 3 parts of wollastonite, and 7 parts of pulp. Among them, cement is ordinary Portland cement; SiO in quartz sand 2 The content of SiO>90wt%, and the 200-mesh sieve of quartz sand is less than 1wt%; SiO in quartz powder 2 content > 98wt%, and the 400-mesh sieve balance of quartz powder is less than 1wt%; SiO in microsilica powder 2content>85wt%, and the specific surface area of ​​silica fume is 15000-35000m 2 / kg; SiO in fly ash 2 content>50wt%, Al 2 o 3 content>27wt%, and fly ash 325 mesh sieve residue is less than 12wt%; CaCO in limestone powder 3 content>98wt%, and limestone powder 800 mesh sieve...

Embodiment 2

[0038] This embodiment provides a high-toughness, high-strength, low-swelling fiber cement exterior wallboard, including the following components in parts by weight: 37 parts of cement, 35 parts of quartz sand, 5 parts of quartz powder, 5 parts of micro-silica fume, powder 14 parts of coal ash, 14 parts of limestone powder, 2 parts of aluminum hydroxide, 2 parts of mica powder, 1 part of wollastonite, 6 parts of pulp. Wherein, wherein, cement is ordinary portland cement; SiO in quartz sand 2 content > 90wt%, and the 200-mesh sieve balance of quartz sand is less than 1wt%; SiO in quartz powder 2 content > 98wt%, and the 400-mesh sieve balance of quartz powder is less than 1wt%; SiO in microsilica powder 2 content > 85wt%, and the specific surface area of ​​silica fume is 15000-35000m 2 / kg; SiO in fly ash 2 content>50wt%, Al 2 o 3 content>27wt%, and fly ash 325 mesh sieve balance is less than 12wt%; CaCO in limestone powder 3 content>98wt%, and limestone powder 800 mesh s...

Embodiment 3

[0041] This embodiment provides a high-toughness, high-strength, low-swelling fiber cement exterior wallboard, including the following components in parts by weight: 30 parts of cement, 18 parts of quartz sand, 13 parts of quartz powder, 3 parts of micro-silica fume, powder 21 parts of coal ash, 14 parts of limestone powder, 3 parts of aluminum hydroxide, 3 parts of mica powder, 5 parts of wollastonite, and 9 parts of pulp. Among them, cement is ordinary Portland cement; SiO in quartz sand 2 The content of SiO>90wt%, and the 200-mesh sieve of quartz sand is less than 1wt%; SiO in quartz powder 2 content>98wt%, and the 400-mesh sieve balance of quartz powder is less than 1wt%; SiO in silica fume 2 content>85wt%, and the specific surface area of ​​silica fume is 15000-35000m 2 / kg; SiO in fly ash 2 content>50wt%, Al 2 o 3 content>27wt%, and fly ash 325 mesh sieve balance is less than 12wt%; CaCO in limestone powder 3 content>98wt%, and limestone powder 800 mesh sieve balan...

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Abstract

The invention provides a high-toughness, high-strength and low-wet-expansion fiber cement external wall panel which comprises the following components in parts by weight: 29-41 parts of cement, 18-35 parts of quartz sand, 5-13 parts of quartz powder, 3-6 parts of silica fume, 14-21 parts of fly ash, 14 parts of limestone powder, 1-4 parts of aluminum hydroxide, 2-4 parts of mica powder, 1-5 parts of wollastonite and 6-9 parts of paper pulp. In addition, the invention also provides a preparation method of the high-toughness, high-strength and low-wet-expansion fiber cement external wall panel. The high-toughness, high-strength and low-wet-expansion fiber cement external wall panel is environmentally friendly, low in cost, high in density, high in toughness and strength, extremely low in wet expansion rate, excellent in performance in weather resistance experiments such as freezing and thawing cycle and soaking and drying, and capable of fully meeting the use requirements of external wall panels in extreme climate areas.

Description

technical field [0001] The invention belongs to the technical field of building materials, and in particular relates to a high-toughness, high-strength, low-swelling fiber cement exterior wall panel and a preparation method thereof. Background technique [0002] Fiber cement board is made of cement as cementing material, organic synthetic fiber, inorganic mineral fiber or cellulose fiber as reinforcing material, and is made by molding, pressurization (or non-pressurization), and autoclave (or non-autoclave) curing. of plates. Fiber cement board has high strength, weather resistance, moisture-proof and waterproof, flame-retardant, anti-corrosion and anti-bacterial, good mechanical processing (sawing, drilling, nailing, planing, punching, slotting, etc.), easy to decorate, and good sound insulation and heat insulation, etc. performance, can be widely used in non-load-bearing interior and exterior wall panels, ceilings, prefabricated rooms and other fields; in addition, such p...

Claims

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Application Information

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IPC IPC(8): C04B28/04C04B38/00C04B111/20
CPCC04B28/04C04B2111/29C04B2111/20C04B2201/20C04B2201/50C04B14/06C04B14/28C04B14/303C04B14/20C04B14/043C04B18/08C04B18/146C04B18/241C04B38/00C04B38/0074Y02W30/91
Inventor 李阳王丽娜吴卫平刘晓琴卢胜强刘吉红
Owner WUHAN BUILDING MATERIAL IND DESIGN & RES INST
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