Aerated concrete composite external wall insulation block without autoclaving and production method thereof

A technology of aerated concrete and external wall insulation boards, applied in insulation, building components, ceramic molding machines, etc., can solve problems such as organic insulation materials, poor adhesion of cement mortar, weak oxidation resistance, etc., and achieve Significant thermal insulation performance, strong fire performance, and strong oxidation resistance

Inactive Publication Date: 2010-06-23
TIANJIN NORMAL UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Such as flammable, not resistant to high temperature, not resistant to acid and alkali, weak anti-oxidation ability, easy to age, low strength, poor adhesion to cement mortar, easy to bulge, etc.
Engineers and technicians have done a lot of work and made some progress in solving the problems of polystyrene board and polyurethane board external wall insulation materials, but they still cannot completely solve the above-mentioned defects of organic insulation materials

Method used

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  • Aerated concrete composite external wall insulation block without autoclaving and production method thereof
  • Aerated concrete composite external wall insulation block without autoclaving and production method thereof
  • Aerated concrete composite external wall insulation block without autoclaving and production method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0046] (1) Raw material ratio of aerated concrete:

[0047] High alumina cement: lime: fly ash: water glass = 0.3: 0.2: 0.45: 0.05, then add water and stir according to the water-to-material ratio of 0.59. Wherein the foaming agent (aluminum powder) is used in an amount of 0.15% (percentage by weight) of the total amount of air-entrained concrete materials. The amount of poured air-entrained concrete material should be able to completely wrap the polystyrene board at the end of the gas generation. At this time, the volume of the air-entrained concrete accounts for one-third of the total volume of the steam-free aerated concrete composite external wall insulation board.

[0048] (2) Iron the six sides with round holes with a diameter of 0.5 to 2 cm and a depth of 0.5 to 2 cm, and fix the polystyrene board with glass mesh cloth on two large surfaces (with a diameter of 1 to 3 cm) standing upright (the large surface is vertical) in the mold. Fixing method: Fix on the positionin...

Embodiment 2

[0051] (1) Raw material ratio of aerated concrete:

[0052] High alumina cement: lime: sand: water glass=0.32: 0.21: 0.42: 0.05 Then add water and stir according to the water-material ratio of 0.56. Wherein the consumption of foaming agent (aluminum powder) is 0.16% (percentage by weight) of the total amount of materials. The amount of poured material should be able to completely wrap the polystyrene board at the end of the gas generation. At this time, the volume of the air-entrained concrete accounts for one-third of the total volume of the non-steamed aerated concrete composite external wall insulation board.

[0053] (2) Fix the six-sided polystyrene board with round holes with a diameter of 0.5 to 2 cm and a depth of 0.5 to 2 cm and two large surfaces fixed (with a diameter of 1 to 3 cm) and glass mesh cloth standing (large surface vertical) On a bracket that can keep a gap of 2-3 cm between the polystyrene board and the bottom and four sides of the mold, the length of t...

Embodiment 3

[0056] (1) Raw material ratio of aerated concrete:

[0057] High alumina cement: lime: fly ash: gypsum = 0.31: 0.22: 0.43: 0.04 and then add water and stir according to the water-material ratio of 0.6. Wherein the consumption of foaming agent (aluminum powder) is 0.14% (percentage by weight) of the total amount of materials. The amount of poured material should be able to completely wrap the polyurethane board at the end of the gas generation. At this time, the volume of the air-entrained concrete accounts for one-third of the total volume of the non-steamed aerated concrete composite external wall insulation board.

[0058](2) Fix the six-sided round hole with a diameter of 0.5 to 2 cm and a depth of 0.5 to 2 cm and two large surfaces fixed (hole diameter 1 to 3 cm) of polyurethane board with glass mesh cloth standing (large surface vertical) on the in the mold. Fixing method: Fix on the positioning nails that ensure a 2-3cm gap with the bottom of the mold. At the same tim...

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Abstract

The invention relates to an aerated concrete composite external wall insulation block without autoclaving and a production method thereof. The method comprises the following steps: casting uniformly stirred aerated concrete material into a die where organic insulation boards are well fixed, and covering all the organic insulation boards inside when the cast material expands; the volume of the cast material after completely expanding is two thirds of the total volume of the aerated concrete composite external wall insulation block without autoclaving. The insulation block has the following advantages: firstly, because the surface layer of the external wall insulation block is made of aerated concrete material, the compression strength, the folding strength and the shock strength thereof are superior to those of the prior external wall insulation block, the insulation block can be strongly bound with cement mortar, is convenient for construction and has extremely strong fire resisting property; secondly, in order to improve the insulating property of the external wall insulation block, polyphenylene boards or polyurethane boards with extremely good insulating property are covered in aerated concrete, thereby not only greatly improving the insulating property of the external wall insulation block, but also overcoming various defaults due to the exposed use of the polyphenylene boards or polyurethane boards. Therefore, the aerated concrete composite external wall insulation block without autoclaving has a very broad application prospect.

Description

technical field [0001] The invention belongs to the technical field of building energy-saving materials. The invention relates to an external wall thermal insulation material used in engineering, more specifically, a method for preparing a composite external wall thermal insulation board by adopting a non-steaming aerated concrete production process. Background technique [0002] Recently, the convening of the United Nations Climate Change Conference in Copenhagen sounded the rallying call for mankind to save the earth. Facing a series of severe problems such as resource depletion, environmental deterioration, ecological destruction, and climate warming, it has further highlighted the arduous historical task of building energy conservation. We must stand at the height of the country, the nation and all mankind, and take the scientific outlook on development as a guide to promote the progress of building energy-saving technology and the sustainable development of the buildin...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E04B1/80C04B28/06B28B1/00
Inventor 梁炳恒梁炳通梁城伟
Owner TIANJIN NORMAL UNIVERSITY
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