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Foamed concrete heat preservation plate and preparation method thereof

A foamed concrete and thermal insulation board technology, applied in the field of thermal insulation materials, can solve the problems of shortening the service life of thermal insulation system, damage of foamed cement board, increasing raw material cost, etc. Effect

Active Publication Date: 2013-09-18
上海宝冶工程技术有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

With the improvement of people's requirements for building fire protection, people began to use foamed cement boards as insulation boards. The compressive strength is even only 0.1Mpa, and it is very easy to cause damage to the foamed cement board during construction, which not only increases the cost of raw materials, but also brings a lot of inconvenience to the construction, and also shortens the service life of the insulation system

Method used

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  • Foamed concrete heat preservation plate and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0017] By weight, the following raw materials were used: 300 parts of Portland cement (PO42.5), 100 parts of high alumina cement, 150 parts of fly ash (I grade), 10 parts of calcium stearate, 3 parts of polymer rubber powder, 2 parts of polypropylene fiber anti-crack fiber, 30 parts of hydrogen peroxide (27.5% by mass), 2 parts of water repellent, 290 parts of water, added to a gravity-free mixer and mixed for 3 minutes, poured into the mold, and formed after molding and curing Foamed concrete insulation board.

[0018] The foamed concrete insulation board in the present embodiment is cut into a size specification of 600mm*600mm for performance testing, and the test results are shown in Table 1:

[0019] Table 1

[0020]

[0021] As can be seen from the table, the compressive strength of the foamed concrete insulation board obtained in Example 1 reaches 1.27MPa, and the dry apparent density is 225kg / m 3 , the combustion performance reaches A1 level, which has a certain co...

Embodiment 2

[0023] By weight, the following raw materials were used: 290 parts of Portland cement (PO42.5), 100 parts of high alumina cement, 140 parts of fly ash (I grade), 9 parts of calcium stearate, 4 parts of polymer rubber powder, 2 parts of polypropylene fiber anti-crack fiber, 30 parts of hydrogen peroxide (27.5% by mass), 2 parts of water repellent, 290 parts of water, added to a gravity-free mixer and mixed for 3 minutes, poured into the mold, and formed after molding and curing Foamed concrete insulation board.

[0024] After testing, the compressive strength of the foamed concrete insulation board in this example reaches 1.30MPa, and the dry apparent density is 231kg / m 3 , the water absorption rate (V / V) is 0.31%, the thermal conductivity (25℃) is 0.05, the combustion performance reaches A1 level, and it has a certain compressive effect, which can be used as a thermal insulation board in the thermal insulation system.

Embodiment 3

[0026] By weight, the following raw materials: 300 parts of Portland cement (PO42.5), 120 parts of high alumina cement, 155 parts of fly ash (I grade), 10 parts of calcium stearate, 3 parts of polymer rubber powder, 2 parts of polypropylene fiber anti-crack fiber, 30 parts of hydrogen peroxide (27.5% by mass), 2 parts of water repellent, 300 parts of water, added to a gravity-free mixer and mixed for 3 minutes, poured into the mold, and formed after molding and curing Foamed concrete insulation board.

[0027] After testing, the compressive strength of the foamed concrete insulation board in this example reaches 1.32MPa, and the dry apparent density is 227kg / m 3 , the water absorption rate (V / V) is 0.28%, the thermal conductivity (25°C) is 0.05, the combustion performance reaches A1 level, and has a certain compressive effect, which can be used as a thermal insulation board in the thermal insulation system.

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Abstract

The invention belongs to the field of heat preservation materials, and in particular relates to a foamed concrete heat preservation plate and a preparation method thereof. The foamed concrete heat preservation plate comprises the following raw materials in parts by weight: 380-430 parts of a binding material, 135-160 parts of an admixture, 8-12 parts of calcium stearate, 3-6 parts of polymer gelatine powder, 0.5-3 parts of anti-cracking fibers, 1-4 parts of moisture repellent, 25-35 parts of hydrogen peroxide and 270-310 parts of water. The foamed concrete heat preservation plate is obtained by adding the raw materials into a gravity-free mixing stirrer to mix for 2-5 minutes, pouring the mixtures into a die and forming and maintaining the product. The bonding material consists of portland cement and high-alumina cement; the weight ratio of the portland cement to the high-alumina cement is (1-4):1. The foamed concrete heat preservation plate is high in tensile strength, small in density, light in weight, high in fire retardant effect and low in absorption rate; the combustion performance of the foamed concrete heat preservation plate is up to grade A1; the cost of the raw materials is low; the heat preservation plate is high in safety, and therefore, toxic gas cannot be produced even under the condition of high temperature or fire.

Description

technical field [0001] The invention belongs to the field of thermal insulation materials, in particular to a foamed concrete thermal insulation board and a preparation method thereof. Background technique [0002] At present, there are various forms of wall insulation in the construction market, but the method of using thermal insulation lining boards is the most commonly used, and thermal insulation boards are an indispensable part of the thermal insulation system to achieve the effect of thermal insulation. The common thermal insulation board used now is expanded polystyrene board thermal insulation board. Although the board has low density, light weight and low thermal conductivity, the thermal insulation board is flammable, and its combustion performance is Class B, which produces toxic gases and The flame brings great danger to the escapees. At the same time, after the polystyrene board is heated, it undergoes thermal shrinkage deformation and falls, causing fatal dang...

Claims

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Application Information

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IPC IPC(8): C04B38/02C04B28/06
Inventor 马冰洋阳刚张平辉魏金龙
Owner 上海宝冶工程技术有限公司
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