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Lightweight high-strength air-entrained concrete prepared by using glass powder and method thereof

A technology of air-entrained concrete and glass powder, which can be used in applications, household utensils, ceramic products, etc., and can solve problems such as environmental pollution and waste of resources

Active Publication Date: 2015-11-18
GUANGXI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Abandoning them will cause a waste of resources while polluting the environment

Method used

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  • Lightweight high-strength air-entrained concrete prepared by using glass powder and method thereof
  • Lightweight high-strength air-entrained concrete prepared by using glass powder and method thereof
  • Lightweight high-strength air-entrained concrete prepared by using glass powder and method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] (1) Grind kaolin tailings (dried to moisture content ≦1%) until 200-mesh sieve is 3.93% kaolin tailings powder; crushed glass is ground to 325-mesh glass powder, sieve is 1.19%; The quicklime is ground to a 200-mesh sieve with 11.88%, the effective CaO content of the lime is 84.62%, the digestion time is 7min, and the digestion temperature is 90°C; the 200-mesh gypsum sieve is 6.2%.

[0036] (2) According to the mass percentage, the raw materials prepared in step (1) are 60% of kaolin tailings powder, 5% of glass powder, 9% of P.O42.5 cement, 24% of quicklime, and 2% of gypsum, plus the above mixed dry materials 0.12% of the total mass of aluminum powder paste and 52% of warm water at 45°C, plus an inorganic salt admixture of 0.25% of the total mass of the calcareous material CaCl 2 . First mix kaolin tailings powder, glass powder, gypsum and warm water and stir slowly for 60s, then add cement and stir slowly for 60s, then add inorganic salt admixture, quicklime and st...

Embodiment 2

[0042] (1) Grind kaolin tailings (dried to moisture content ≦1%) until 200-mesh sieve is 4.74% kaolin tailings powder; cullet is ground to 325-mesh glass powder, sieve is 2.87%; The quicklime is ground to 12.69% on a 200-mesh sieve, the effective CaO content of the quicklime is 80.33%, the digestion time is 6 minutes, and the digestion temperature is 95°C; the gypsum fineness is 6.2% on a 200-mesh sieve.

[0043] (2) According to the percentage by weight, the raw materials prepared in step (1) are 55% of kaolin tailings powder, 10% of glass powder, 8% of P.O42.5 cement, 24% of quicklime, and 3% of gypsum, plus the above mixed dry materials 0.13% of the total mass of aluminum powder paste and 51% of warm water at 40°C, plus 0.20% of the total mass of the calcareous material as an inorganic salt additive CaCl 2 . First mix kaolin tailings powder, glass powder, gypsum and warm water and stir slowly for 60s, then add cement and stir slowly for 60s, then add quicklime and inorgani...

Embodiment 3

[0049] (1) Grind kaolin tailings (dried to moisture content ≦1%) until 200-mesh sieve residue is 5.49% kaolin tailings powder; cullet is ground to 325-mesh glass powder, sieve residue is 0.98%; The quicklime is ground to 200-mesh sieve with 10.42%, the effective CaO content of lime is 82.61%, the digestion time is 8min, and the digestion temperature is 92°C; the 200-mesh gypsum sieve is 6.2%.

[0050] (2) According to the percentage by weight, the raw materials prepared in step (1) are 52% of kaolin tailings powder, 13% of glass powder, 11% of P.O42.5 cement, 20% of quicklime, and 4% of gypsum, plus the above mixed dry material The total mass is 0.15% aluminum powder paste and 50% warm water at 50°C. First mix kaolin tailings powder, glass powder, gypsum and warm water and stir slowly for 60s, then add cement and stir slowly for 60s, then add quicklime and stir slowly for 60s, finally add aluminum powder paste and stir quickly for 45s, then stir slowly for 30s , to prepare a ...

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Abstract

The invention discloses a light and high strength aerated concrete prepared with glass powder and a preparation method thereof. The inventor further improves kaolin tailings aerated concrete, and uses the glass powder to substitute partial tailings so as to remarkably enhance product strength. In addition, regulation of the use amount of aluminum powder and external addition of an early-strength agent CaCl2 effectively improve product density without losing overmuch strength; the bodying and gas forming expansion are coordinated by regulating time for agitation, and finally, the light and high strength aerated concrete with good heat-insulated performance, proper weight and higher strength is prepared. The light and high strength aerated concrete and the preparation method thereof fully utilize resources, lower production cost, have good economic benefits, improve the strength and keep lower intensity on the basis of ensuring the heat-insulated performance of the aerated concrete building blocks, can meet the high requirement of the present buildings on the bearing performance of the aerated concrete, and meanwhile satisfy the demand of environmental-friendly buildings.

Description

technical field [0001] The invention belongs to the technical field of new building wall materials, and in particular relates to a light-weight high-strength aerated concrete prepared by using glass powder and a method thereof. Background technique [0002] In "Development of Air-entrained Concrete Using Kaolin Tailings" (New Building Materials, 2013 (9)), the inventors made a preliminary attempt to successfully develop air-entrained concrete using kaolin tailings. The experimental results show that the density of the obtained kaolin tailings air-entrained concrete is 600-700Kg.m -3 , the compressive strength is 5~6MPa, which has reached or slightly stronger than the strength of ordinary aerated concrete products, which provides new raw materials for the production of aerated concrete, and effectively solves the pollution problem caused by kaolin tailings to the environment, saving In order to solve the pollution and stacking needs a lot of investment, while increasing the ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C04B28/18C04B22/04C04B22/12C04B38/02C04B7/24
CPCY02P40/145Y02P40/10
Inventor 邱树恒陈向荣冯阳阳陈霏杨志明梁燕飞欧天安
Owner GUANGXI UNIV
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