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Foamed concrete heat insulation board

A foamed concrete and thermal insulation board technology, which is applied in the field of foamed concrete thermal insulation boards, can solve the problems of easy breakage, micro-cracks, and inability to meet building structures.

Inactive Publication Date: 2018-09-14
芜湖恒固混凝土材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, at present, ordinary concrete insulation boards and aerated concrete insulation boards are brittle materials, which are easy to produce micro-cracks due to shrinkage, or even completely destroyed, and are easily broken during transportation and construction.
The strength of lightweight concrete insulation panels on the market is very low (generally <5MPa), which cannot meet the requirements of building structures, and can only be used as non-load-bearing partition walls or insulation materials

Method used

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  • Foamed concrete heat insulation board

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preparation example Construction

[0012] The present invention also provides a preparation method of the foamed concrete insulation board, comprising the following steps:

[0013] (1) Put aluminum silicate fiber, polymer powder and second foaming agent in water, ultrasonically react at 80-100°C for 30-45 minutes, and then calcinate at 200-220°C for 10-15 minutes to obtain composite fibers;

[0014] (2) Mix fly ash, cement, fine sand, diatomaceous earth, light calcium carbonate, light aggregate, composite porous fiber and waste rubber under mechanical stirring conditions to obtain a powder mixture;

[0015] (3) After uniformly dispersing the water reducer and other additives in water, add them to the above powder mixture, and continue to stir for 60-150s to obtain a mixed slurry; finally, add the first foaming agent to the mixed slurry, and stir evenly to obtain Concrete precursor;

[0016] (4) The concrete precursor is poured into the mold, and the mold is covered and sealed until it reaches 20-60% of the mol...

Embodiment 1

[0030] (1) Take 22kg of polyethylene terephthalate (U.S. DuPont, FR530-BK), 10kg of aluminum silicate fiber and 5kg of 4,4-oxobisbenzenesulfonyl hydrazide in 100kg of water, then place them in 80°C Ultrasonic reaction for 45 minutes, and then calcined at 200°C for 15 minutes to obtain composite fibers;

[0031] Soak 4kg of waste rubber granules in an acidic solution with a pH of 6-6.5 for 4 hours to obtain acidified rubber, mix the acidified rubber and 10kg of maleic anhydride in water evenly, and stir and react at 100°C for 1 hour to obtain modified rubber;

[0032] (2) Mix 35kg of fly ash, 25kg of cement, 23kg of fine sand, 8kg of diatomaceous earth, 8kg of light calcium carbonate, 10kg of clay ceramsite (1-5mm), 10kg of pumice (1-5mm), and 10kg of polyethylene foam , 8kg composite fiber and modified rubber are mixed uniformly under mechanical stirring conditions to obtain a powder mixture;

[0033](3) Polycarboxylate superplasticizer (model PASP-Ca, purchased from Shandong...

Embodiment 2

[0036] (1) Take 20kg of polyvinylidene fluoride powder (Solvay, 5130 in the United States), 12kg of aluminum silicate fiber and 2kg of 4,4-oxobisbenzenesulfonyl hydrazide in 150kg of water, and then ultrasonically react at 100°C for 30min. Then calcined at 200°C for 15 minutes to obtain composite fibers;

[0037] Soak 3kg of waste rubber particles in an acidic solution with a pH of 6-6.5 for 3 hours to obtain acidified rubber, mix the acidified rubber and 9kg of maleic anhydride in water evenly, and stir and react at 120°C for 1 hour to obtain modified rubber;

[0038] (2) 25kg of fly ash, 35kg of cement, 15kg of fine sand, 12kg of diatomaceous earth, 5kg of polyethylene foam (1 to 5mm), 10kg of castor straw, 12kg of composite fiber and modified rubber under mechanical stirring conditions Mix evenly to obtain a powder mixture;

[0039] (3) 1.5kg polycarboxylate superplasticizer (model PASP-Ca, purchased from Shandong Yuanlian Chemical Co., Ltd.), 1kg sodium dodecylbenzenesulf...

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Abstract

The invention relates to the technical field of concrete, in particular to a foamed concrete heat insulation board which is prepared from, by weight, 25-45 parts of coal ash, 15-35 parts of cement, 15-30 parts of fine sand, 5-12 parts of diatomite, 3-15 parts of light calcium carbonate, 3-12 parts of composite fibers, 15-48 parts of light aggregates, 3-8 parts of waste rubber particles, 1-3 partsof first foaming agents, 0.5-1.5 parts of water reducing agents and 0-5 parts of other additives, and the composite fibers are prepared from, by weight, 10-30 parts of polymer powder, 0.6-10 parts ofsecond foaming agents and 5-15 parts of alumina silicate fibers. The foamed concrete heat insulation board has the advantages of light weight, high strength and good weather resistance.

Description

technical field [0001] The invention relates to the technical field of concrete and its preparation, in particular to a foamed concrete insulation board. Background technique [0002] Building energy conservation is a very important aspect of realizing a low-carbon economy. my country will continue to vigorously implement building energy conservation and emission reduction for a long period of time, develop green buildings and circular economy, and green building materials will become the main direction of development. At present, the most common concrete insulation board used in industrial and civil buildings, although its strength (generally 20-30MPa) can basically meet the requirements of the building structure, is relatively heavy. [0003] Foam concrete has a variety of excellent properties, such as light weight, flame retardant and heat insulation, good thermal insulation and sound insulation performance, and the ability to adjust indoor humidity just meets the requir...

Claims

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Application Information

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IPC IPC(8): C04B28/00C04B38/02C04B38/10C04B20/10C04B111/52
Inventor 承忠富
Owner 芜湖恒固混凝土材料有限公司
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