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Novel foam concrete block for self-heat-insulation of wall body and producing method of same

A technology of foam concrete and self-insulation, applied in the field of lightweight energy-saving building wall materials, can solve the problems of high damage rate, large internal stress, shear damage, etc., achieve high compressive strength, short production cycle, and improve bearing capacity and the effect of shock resistance

Inactive Publication Date: 2015-08-12
潍坊德霖建材科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

It realizes the unity of light weight and high strength, heat preservation and fire prevention, not only overcomes the shortcomings of traditional foam concrete such as low strength, powder dropping and high breakage rate, but also overcomes the obvious interface, large internal stress, and Interfacial cracks caused by different coefficients of thermal expansion between layers, and technical problems that are prone to shear failure along the direction of the core plane

Method used

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  • Novel foam concrete block for self-heat-insulation of wall body and producing method of same

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] A new type of foam concrete block used for self-insulation of walls is prepared by the following steps:

[0029] 1) Weigh 100 parts of cement, 15 parts of fly ash, 0.6 parts of triethanolamine, 1 part of fiber, 2 parts of water reducer, and 36 parts of water, stir in a mixer and prepare a large fluid slurry.

[0030] 2) Dilute the foaming agent and water at a ratio of 1:30 and mechanically foam.

[0031] 3) Put the slurry in step 1) and the foam in step 2) into the foam mixing machine according to the set addition rate curve, mix well and continuously discharge into the mold.

[0032] 4) After curing and cutting, a foam concrete block with a length of 600mm, a width of 200mm and a height of 200mm can be obtained. The apparent density of the block is 615kg / m 3 , compressive strength ≥ 3.5 MPa, thermal conductivity ≤ 0.14 W / (m·k).

Embodiment 2

[0034] A new type of foam concrete block used for self-insulation of walls is prepared by the following steps:

[0035] 1) Weigh 100 parts of cement, 15 parts of fly ash, 0.6 parts of triethanolamine, 1 part of fiber, 2 parts of water reducer, and 36 parts of water, stir in a mixer and prepare a large fluid slurry.

[0036] 2) Dilute the foaming agent and water at a ratio of 1:30 and mechanically foam.

[0037] 3) Put the slurry in step 1) and the foam in step 2) into the foam mixing machine according to the set addition rate curve, mix well and continuously discharge into the mold.

[0038] 4) After curing and cutting, a foam concrete block with a length of 600mm, a width of 200mm and a height of 200mm can be obtained. The apparent density of the block is 820kg / m 3 , compressive strength ≥ 4.5 MPa, thermal conductivity ≤ 0.21 W / (m·k).

[0039] The slurry proportions of the above-mentioned Examples 1 and 2 are the same, and the foam addition rate curve is changed to obtain ...

Embodiment 3

[0041] A new type of foam concrete block used for self-insulation of walls is prepared by the following steps:

[0042] 1) Weigh 100 parts of cement, 20 parts of mineral powder, 1.2 parts of sodium sulfate, 2 parts of accelerator, 1 part of fiber, 0.8 parts of water reducing agent, and 65 parts of water, stir in a mixer and prepare a large fluidity slurry.

[0043] 2) Dilute the foaming agent and water at a ratio of 1:30 and mechanically foam.

[0044] 3) Put the slurry in step 1) and the foam in step 2) into the foam mixing machine according to the set addition rate curve, mix well and continuously discharge into the mold.

[0045] 4) After curing and cutting, a foam concrete block with a length of 600mm, a width of 200mm and a height of 200mm can be obtained. The apparent density of the block is 525kg / m 3 , compressive strength ≥ 2.5 MPa, thermal conductivity ≤ 0.12W / (m·k).

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Abstract

A novel foam concrete block for self-heat-insulation of a wall body relates to a light-weight foam concrete block for heat insulation of a wall body. In the invention, the foam concrete block, of which the porosity and the pore size are changed continuously, is formed by mixing and stirring a large-flowability slurry material and foams in different proportions and continuously pouring the mixture. The large-flowability slurry material is composed of following components, by mass: 100 parts of cement, 10-30 parts of a blending material, 0-5 parts of an additive agent, 0-3 parts of fibers, 0.5-5 parts of a water reducing agent and 25-84 parts of water. According to the required compressive strength and thermal resistance of the block, addition rate curves of the foam and the slurry material are designed. A finished product of the foam concrete block is prepared through continuously material feeding, material stirring, material discharging, pouring and maintenance. The novel self-heat-insulation foam concrete block is wide in source of raw materials, is simple in producing process, is low in cost and is controllable in performances. The foam concrete block can be widely applied in a single heat-insulation wall body of an external wall (self heat-insulation of the wall body), internal and external separation walls in frame structure, back board walls of a large wall cabinet, and fireproof, sound-insulating and heat-insulating layers of internal wall.

Description

technical field [0001] The invention belongs to the field of lightweight energy-saving building wall materials, and in particular relates to a novel foam concrete block for wall self-insulation and a production method thereof. Background technique [0002] With the implementation of my country's wall reform and building energy-saving policies, the materials required in modern buildings not only have the properties of light weight, high strength, heat preservation, heat insulation, waste utilization, and energy saving, but also require materials to be non-combustible. [0003] As a new type of building material, foam concrete has the above properties, and will quickly replace the widely used organic combustible thermal insulation materials and be widely used in building energy conservation. Existing wall self-insulation blocks, such as the publication number CN102493593 "Coal Gangue Foam Concrete Blocks for Wall Self-Insulation" announced a kind of concrete with an apparent d...

Claims

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Application Information

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IPC IPC(8): C04B28/04C04B38/10
Inventor 陈雪梅刘元正张德成
Owner 潍坊德霖建材科技有限公司
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