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Manufacturing method of aerated concrete

A technology of air-entrained concrete and its manufacturing method, which is applied in the fields of material science and engineering science, can solve the problems of limited thermal performance improvement, insufficient filling material strength, and decline in heat resistance, etc., to achieve strength performance and thermal performance improvement , excellent mechanical properties and long service life

Active Publication Date: 2010-09-08
吴智深 +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, more mature industrialized aerated concrete products have an absolute dry density of 400-700kg / m 3 Between them, the thermal conductivity is about 0.09-0.15W / (m K), which cannot meet the technical requirements of about 80% energy saving for a single material
And the density is 300kg / m 3 The compressive strength of the fly ash aerated concrete block is as low as 1.0MPa, and the strength of the filling material for the concrete frame structure building is still insufficient, and the labor productivity is low
The performance improvement technology of traditional air-entrained concrete mostly uses fiber and amorphous SiO 2 , Synthetic resin to strengthen the material and improve the thermal performance will inevitably lead to a decline in heat resistance, and under the condition of maintaining a certain compressive strength, the improvement of thermal performance is limited

Method used

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  • Manufacturing method of aerated concrete

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] (1) Prepare liquid feed liquid.

[0033] Solid materials include calcareous and siliceous materials,

[0034] Silica material: 325-mesh quartz powder and bentonite, the mass fractions are 2 parts and 1.25 parts respectively; Calcareous material: P.O.425 ordinary Portland cement, building gypsum, quicklime (all 200-mesh sieves pass), the mass fraction They are 1 part, 1 part and 0.5 part respectively.

[0035] At this stage, the mass fraction ratio of water to solid material is 0.6, that is, 3.75 parts of water. At a temperature of 45°C, water is mixed with calcareous material and silicon material to obtain 10 parts of liquid material.

[0036] (2) Pre-curing of liquid feed liquid: Stir the above-mentioned liquid raw materials continuously for 0.6 hours for pre-curing.

[0037] (3) First mix water and amorphous silicon material to prepare amorphous silicon material slurry, the mass fraction ratio of water and amorphous silicon material is 0.6, that is, take 11.25 parts...

Embodiment 2

[0042] (1) Prepare liquid feed liquid.

[0043] Solid materials include calcareous and siliceous materials,

[0044] Silica material: 200-mesh quartz powder, diatomite (325-mesh sieve all pass through), mass fractions are 5 parts and 3.18 parts respectively;

[0045] Calcareous materials: P.O.425 ordinary Portland cement, building gypsum, Ca(OH) 2 (325 mesh sieve residue is 15%), and mass fraction is respectively 0.4 part, 0.36 part, 0.82 part.

[0046] At this stage, the ratio of the mass fraction of water to solid material is 1, that is, 10 parts of water. At a temperature of 50°C, water is mixed with calcareous material and silicon material to obtain 20 parts of liquid material.

[0047] (2) Pre-curing of liquid feed liquid: Stir the above-mentioned liquid raw materials continuously for 1 hour for pre-curing.

[0048] (3) First mix water and amorphous siliceous material to prepare amorphous siliceous material slurry, the mass fraction ratio of water and amorphous siliceo...

Embodiment 3

[0053] (1) Prepare liquid feed liquid.

[0054] Solid materials include calcareous and siliceous materials,

[0055] Silica material: powdered quartz and 1200 mesh zeolite powder, 800 mesh blast furnace slag, the mass fractions are 6.9 parts, 2 parts, and 2 parts respectively;

[0056] Calcareous materials: superfine Portland cement, 160-mesh desulfurized gypsum, and quicklime (all 200-mesh sieves pass through), the mass fractions of which are 0.3, 1.3, and 1.5 parts, respectively.

[0057] At this stage, the mass fraction ratio of water to solid material is 1, that is, 14 parts of water. Under the temperature condition of 60°C, water is mixed with calcareous material and silicon material to obtain 28 parts of liquid material.

[0058] (2) Pre-curing of the liquid feed liquid: Stir the above-mentioned liquid raw materials continuously for 1.5 hours for pre-curing.

[0059] (3) First mix water and amorphous silicon material to prepare amorphous silicon material slurry, the ma...

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Abstract

The invention discloses a manufacturing method of aerated concrete, which comprises the following steps of: preparing liquid feed liquid; precuring; mixing an amorphous silicon material and water to prepare amorphous silicon material slurry; then mixing the amorphous silicon material slurry, the liquid feed liquid, a crystalline silicon material, one of calcined lime or calcium hydroxide or lime milk, dihydrate gypsum or semi-hydrated gypsum, ordinary portland cement, feldspar materials, strength intensifier, calcined lime digestion regulator, bubble regulator, lubrication tackifier, water repellent, a foaming agent and water; stirring the mixture at the speed of between 800 and 1,500rpm for 3 to 7 minutes to prepare foam slurry; and performing standing curing and still kettle curing to prepare the aerated concrete. The product obtained by the manufacturing method has the characteristics of light weight, high strength, flame retardance, heat preservation, heat insulation, hydrophobic property, long service life, impact resistance, small shrinkage, and the like; moreover, the material sources are wide, and the products are simple and convenient to process and manufacture.

Description

technical field [0001] The invention relates to a novel manufacturing method of super heat-resisting and high-strength aerated concrete, which belongs to the technical field of material science and engineering science. Background technique [0002] Resources, energy, environment, economy and performance are issues that should be considered comprehensively in the development of materials science, especially the building materials industry. Human beings are increasingly facing the threat of the depletion of natural resources, and the excessive consumption and abandonment of natural resources have caused very serious problems such as ecosystem damage and environmental pollution. How to protect limited natural resources is directly related to the protection of human living environment. [0003] According to the current national regulations, only by using air-entrained concrete can the energy saving requirement of a single inorganic material be 50% to 80%. However, any other in...

Claims

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Application Information

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IPC IPC(8): C04B28/14
CPCC04B2111/34C04B40/0039C04B2111/28C04B2103/44C04B28/14Y02W30/91C04B7/02C04B14/047C04B14/08C04B18/08C04B18/141C04B20/0092C04B22/04C04B22/064C04B22/143C04B24/08C04B24/10C04B24/122C04B24/2641C04B38/02C04B2103/65C04B14/04C04B14/4643C04B24/2623C04B24/383C04B7/00C04B14/06C04B38/106
Inventor 吴智深朱吉鹏杨若冲吴智仁
Owner 吴智深
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