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Fibre-reinforced cement compound external wall panel and method of producing the same

A fiber-reinforced cement and composite exterior wall panel technology, applied in the direction of sustainable waste treatment, solid waste management, climate sustainability, etc., can solve the problems of wet operation, high labor intensity, high cost, etc., to avoid high-strength labor, strong decorative effects, and the effect of reducing production costs

Active Publication Date: 2008-04-02
BEIJING NEW BUILDING MATERIALS PLC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, among the raw materials for the production of existing external wall panels, especially cement external wall panels, polypropylene fiber (PP) and asbestos are mostly used as fiber materials for cement reinforcement. Although PP is well dispersed with the cement matrix, the price is relatively high, while Asbestos is a harmful substance and cannot reflect the requirements of environmental protection; the plasticizer material is mostly expensive methyl cellulose (MC), and the amount of MC added is as high as 2.0 parts per 100 parts of cement. Therefore, the existing cement exterior wall panels The raw material contributes to the high cost of the finished product, and up to 1.6g / cm 3 The above bulk density brings certain difficulties to the construction
Moreover, there are technical problems such as wet operation and high labor intensity in the operation of the existing external wall form
In addition, too few exterior wall base forms and monotonous finishes are not a small regret for today's pursuit of personalized architecture

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] (1) Mixing of ingredients: ordinary portland cement labeled P.O.42.5, silicon powder, calcium powder, dispersed waste newspapers, namely pulp, expanded perlite, wood fiber, wood powder, methyl cellulose (MC), The initial setting agent is placed in a mixer and mixed for 10 minutes, and the temperature in the mixer is controlled below 50°C.

[0023] The formula component (by weight) of raw material is:

[0024] Cement: 100 parts, silicon powder: 20 parts, calcium powder: 15 parts, expanded perlite: 5 parts, wood fiber: 10 parts, wood flour: 15 parts, MC: 0.8 parts, pulp: 4 parts, initial setting agent: 3 copies.

[0025] (2) Kneading: Put the mixed material in a kneader and knead for 15 minutes, and at the same time, spray water evenly, and the water consumption is 46 parts.

[0026] (3) Pressing and curing: put the kneaded material in a self-made steel mold (format size 200mm×200mm×15mm), press it into a slab by a flat vulcanizer, the unit pressure is 5Mpa, the pressur...

Embodiment 2

[0028] (1) Mixing of ingredients: ordinary portland cement labeled P.O.42.5, silicon powder, calcium powder, expanded perlite, wood fiber, wood powder, methyl cellulose (MC), dispersed waste newspaper that is paper pulp, Fly ash and initial setting agent are placed in a mixer and mixed for 10 minutes, and the temperature in the mixer is controlled below 50°C.

[0029] The formula component (by weight) of raw material is:

[0030] Cement: 100 parts, silicon powder: 20 parts, calcium powder: 15 parts, expanded perlite: 5 parts, wood fiber: 10 parts, wood flour: 15 parts, MC: 0.8 parts, fly ash: 30 parts, pulp: 4 parts, initial setting agent: 3 parts.

[0031] (2) Kneading: Put the mixed material in a kneader and knead for 15 minutes, and at the same time, spray water evenly, and the water consumption is 46 parts.

[0032] (3) Pressing and curing: put the kneaded material in a self-made steel mold (format size 200mm×200mm×15mm), press it into a slab by a flat vulcanizer, the un...

Embodiment 3

[0034] (1) Mixing of ingredients: 52.5 fast-hardening sulfoaluminate cement, silicon powder, calcium powder, expanded perlite, wood fiber, wood powder, methyl cellulose (MC), paper after pulp board defibration Fiber, fly ash, and initial setting agent are mixed in a mixer for 10 minutes, and the temperature in the mixer is controlled below 45°C.

[0035] The formula component (by weight) of raw material is:

[0036] Cement: 100 parts, silicon powder: 20 parts, calcium powder: 15 parts, expanded perlite: 5 parts, wood fiber: 10 parts, wood flour: 15 parts, MC: 0.8 parts, fly ash: 30 parts, pulp: 4 parts, initial setting agent: 3 parts.

[0037] (2) Kneading: Put the mixed material in a kneader and knead for 15 minutes, and at the same time, spray water evenly, and the water consumption is 53 parts.

[0038] (3) Pressing and curing: put the kneaded material in a self-made steel mold (format size 200mm×200mm×15mm), press it into a slab by a flat vulcanizer, the unit pressure is...

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Abstract

The present invention relates to a fiber-reinforced cement composite exterior wallboard and the preparation method. In the present invention, 60 to 100 portion of cement are used as the cementing material; 10 to 20 portion of calcium powder and 10 to 30 portion of silica powder are used as the aggregate material; 2 to 10 portion of closed microporous expanded perlite after pretreatment are used as the light aggregate material; 5 to 20 portion of wood fiber, 2.5 to 15 portion of wood powder and 0 to 1.5 portion of polypropylene fiber are used as the reinforcing material; besides, 0.2 to 20 portion of methyl cellulose, 20 to 40 portion of secondary powder coal ash, 0 to 8 portion of pulp and 0 to 6 portion of initial setting agent are added; after mixed in a material mixing machine and kneaded in a kneading machine, the materials are arranged in a mold and then compressed by a flat sulfuration machine to form the exterior wallboard. The exterior wallboard of the present invention uses low-cost materials and material without harmful substances to human bodies such as asbestos and so on; with a simple and fine production process, the prepared products has good performances of heat preservation, heat insulation and sound insulation, and is an energy-saving exterior wallboard. The present invention also solves the problems of wet operation and strong labor intensity in operation of preparing exterior wallboards.

Description

technical field [0001] The invention relates to a composite exterior wall panel and a preparation method thereof, in particular to a low-cost fiber-reinforced cement composite exterior wall panel using industrial waste as part of raw materials and a preparation method thereof. Background technique [0002] With the vigorous development of the construction industry and the modernization of buildings, the use of exterior wall panels in construction projects is increasing significantly. At present, among the raw materials for the production of existing external wall panels, especially cement external wall panels, polypropylene fiber (PP) and asbestos are mostly used as fiber materials for cement reinforcement. Although PP is well dispersed with the cement matrix, the price is relatively high, while Asbestos is a harmful substance and cannot reflect the requirements of environmental protection; the plasticizer material is mostly expensive methyl cellulose (MC), and the amount of...

Claims

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Application Information

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IPC IPC(8): C04B28/00C04B16/06C04B14/18C04B18/26C04B24/38
CPCC04B2103/14C04B28/02Y02W30/91C04B14/04C04B14/185C04B14/28C04B16/0633C04B18/08C04B18/241C04B18/26C04B20/0048C04B24/383C04B40/0028C04B40/0071C04B40/02C04B22/124C04B22/143C04B22/147
Inventor 赵金平年洪恩任强
Owner BEIJING NEW BUILDING MATERIALS PLC
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