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Foam concrete adopting artificial compound lightweight aggregate and preparation method thereof

A foamed concrete and lightweight aggregate technology, applied in the field of lightweight aggregate foamed concrete, can solve the problems of mass fluctuation promotion and application, unstable apparent density and mechanical properties of ceramsite foamed concrete, etc. The effect of small, single strength enhancement

Inactive Publication Date: 2018-11-23
巩义市欧洁源环保技术服务有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the increase of foam content will lead to unstable apparent density and mechanical properties of ceramsite foam concrete, and the large fluctuation of quality also limits its popularization and application.

Method used

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  • Foam concrete adopting artificial compound lightweight aggregate and preparation method thereof
  • Foam concrete adopting artificial compound lightweight aggregate and preparation method thereof
  • Foam concrete adopting artificial compound lightweight aggregate and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0046] The foamed concrete using artificial composite lightweight aggregate in this example is prepared from water and the following raw materials: 315kg of cement, 135kg of fly ash, 17.5kg of quicklime, 4.0kg of gypsum, 1.7kg of water reducing agent, and 1.1kg of foaming agent , artificial composite lightweight aggregate 860L; water-binder ratio is 0.36.

[0047] Wherein, the artificial composite lightweight aggregate used is prepared by the following method:

[0048] 1) The municipal sludge, fly ash and construction dregs are respectively crushed, ground and passed through a 150-mesh sieve to make powder. The mass ratio of municipal sludge, fly ash and construction dregs is 45:45:10 Mix the powders at the same ratio, add calcium carbonate powder and straw powder, and mix uniformly to obtain a raw powder mixture; wherein, the total mass of calcium carbonate powder and straw powder is 10% of the mass of the raw powder mixture; The mass ratio is 1:0.4;

[0049] 2) Add water w...

Embodiment 2

[0056] The foamed concrete using artificial composite lightweight aggregate in this example is prepared from water and the following raw materials: 320kg of cement, 130kg of fly ash, 16.0kg of quicklime, 4.5kg of gypsum, 1.8kg of water reducing agent, and 1.0kg of foaming agent , artificial composite lightweight aggregate 880L; water-binder ratio is 0.37.

[0057] Wherein, the artificial composite lightweight aggregate used is prepared by the following method:

[0058] 1) The municipal sludge, fly ash and construction dregs are crushed and ground respectively and passed through a 150-mesh sieve to make powder. The mass ratio of municipal sludge, fly ash and construction dregs is 50:40:10 Mix the powders at the same ratio, add calcium carbonate powder and straw powder, and mix uniformly to obtain a raw powder mixture; wherein, the total mass of calcium carbonate powder and straw powder is 10% of the mass of the raw powder mixture; The mass ratio is 1:0.45;

[0059] 2) In the ...

Embodiment 3

[0066] The foamed concrete using artificial composite lightweight aggregate in this example is prepared from water and the following raw materials: 330kg of cement, 120kg of fly ash, 17.0kg of quicklime, 4.2kg of gypsum, 2.0kg of water reducing agent, and 1.2kg of foaming agent , artificial composite lightweight aggregate 900L; water-binder ratio is 0.38.

[0067] Wherein, the artificial composite lightweight aggregate used is prepared by the following method:

[0068] 1) The municipal sludge, fly ash and construction dregs are respectively crushed, ground and passed through a 150-mesh sieve to make powder. The mass ratio of municipal sludge, fly ash and construction dregs is 45:40:15 Mix the powders at the same ratio, add calcium carbonate powder and straw powder, and mix uniformly to obtain a raw powder mixture; wherein, the total mass of calcium carbonate powder and straw powder is 10% of the mass of the raw powder mixture; The mass ratio is 1:0.5;

[0069] 2) Add water w...

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Abstract

The invention relates to foam concrete adopting artificial compound lightweight aggregate and a preparation method thereof. Raw materials of the foam concrete include water, cement, coal ash, quicklime, gypsum, a water reducer, a foaming agent and the artificial compound lightweight aggregate; a water-binder ratio is 0.36-0.38; for the artificial compound lightweight aggregate, sludge, coal ash, construction muck, calcium carbonate powder and straw powder are mixed to prepare a raw powder mixture, and watering, sealing, ageing, granulation and drying are conducted to obtain blank particles; glass powder, potassium feldspar, borax and water glass are mixed to obtain a shell mixture; after the blank particles are subjected to warming and pre-heating, the blank particles and the shell mixtureare mixed for secondary granulation to make the hot particles wrapped in the shell mixture, and after sintering and cooling are conducted, the artificial compound lightweight aggregate is prepared. The foam concrete adopts the artificial compound lightweight aggregate which is high in strength and low in water absorption, mixture slump degree fluidity loss is obviously reduced, the porosity rises, the apparent density is low, and the foam concrete has good mechanical performance and heat insulation performance and is suitable for application and popularization.

Description

technical field [0001] The invention belongs to the technical field of lightweight aggregate foamed concrete, and in particular relates to a foamed concrete using artificial composite lightweight aggregate, and at the same time relates to a preparation method of the foamed concrete using artificial composite lightweight aggregate. Background technique [0002] Foamed concrete, also known as foamed concrete, is to fully foam the foaming agent solution mechanically through the foaming system, and evenly mix the foam with the slurry containing siliceous materials, calcium materials, water and various admixtures, Then the pumping system is used for cast-in-place construction or mold forming, and after natural curing, it is a kind of "dense-porous" concrete material with a large number of closed air cells inside. Foam concrete is a closed foam hole formed inside the concrete. It is a building energy-saving material with light weight, heat preservation, heat insulation, fire resis...

Claims

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Application Information

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IPC IPC(8): C04B28/04C04B38/10C04B18/02C04B111/40
CPCC04B18/027C04B28/04C04B2111/40C04B2201/20C04B2201/32C04B2201/50C04B18/08C04B22/064C04B22/143C04B24/14C04B38/10C04B2103/302C04B18/0418C04B18/16C04B14/28C04B18/24C04B14/22C04B14/045C04B22/0013C04B22/00
Inventor 李朝辉
Owner 巩义市欧洁源环保技术服务有限公司
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