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A kind of hollow lightweight aggregate and its preparation method

A lightweight aggregate, hollow technology, applied in the field of cement concrete, can solve the problems of increasing the ability of the floating bed to resist strong wind and waves, increasing the floating capacity of the floating bed, poor water erosion resistance, etc., and achieving increased wind and wave resistance, low production cost, and dense shell structure. Effect

Inactive Publication Date: 2018-07-27
UNIV OF JINAN
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The aggregate is used in the production of ecological floating beds, which can effectively solve the defects of poor buoyancy and water erosion resistance of the floating bed, significantly increase the floating capacity of the floating bed, increase the ability of the floating bed to resist strong winds and waves, and provide a good environment for the growth of animals and plants. It is conducive to the treatment of polluted water bodies and effectively improves the ecological balance

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] A preparation method of hollow lightweight aggregate, it comprises the following steps:

[0024] (1) Stir 95% saturated water-absorbing resin and 5% soluble starch evenly and granulate into hemispherical shape. Take the granules with a particle size of 8-12mm and send them to the coating machine to spray evenly 1.8mm soluble starch by air atomization film to obtain a water-absorbent resin hemisphere;

[0025] (2) Stir the aluminum powder with a weight fraction of 92% and 8% absolute ethanol evenly and granulate into a hemisphere, and take particles with a particle diameter of 8-12 mm to obtain the aluminum powder hemisphere;

[0026] (3) After combining the water-absorbent resin hemisphere and the aluminum powder hemisphere into one, wrap a 3mm soluble starch film on the surface of the coating machine to obtain a foam core;

[0027] (4) Soak the foam core in 55 seconds in the uniform mixing slurry of 75% pumice powder, 12% water, 8% cement and 5% rosin pentaerythritol ...

Embodiment 2

[0034] (1) Stir 92% saturated water-absorbing resin and 8% soluble starch evenly and granulate into hemispherical shape, take the granules with a particle size of 8-12mm and send them to the coating machine, spray evenly with 1mm soluble starch film by air atomization , to obtain a water-absorbing resin hemisphere;

[0035] (2) Stir the aluminum powder with a weight fraction of 96% and 4% absolute ethanol evenly and granulate into a hemisphere, and take particles with a particle diameter of 8-12 mm to obtain the aluminum powder hemisphere;

[0036] (3) After the water-absorbent resin hemisphere and the aluminum powder hemisphere are combined into one, the surface layer of the coating machine is wrapped with a 2mm soluble starch film to obtain a foam core;

[0037] (4) Soak the foam core in 40 seconds in the uniform mixing slurry of 70% pumice powder, 10% water, 14% cement and 6% rosin pentaerythritol ester by weight fraction for 80 seconds, pull out Drain and cure at 50°C for...

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Abstract

The invention discloses hollow lightweight aggregate and a preparation method thereof and belongs to the technical field of cement concrete materials. According to the aggregate preparation method, on one hand, powdered aluminum reacts with water to form a hollow inner cavity, and pumice powder, cement and solid gum are mixed to serve as a lightweight shell with ductility; on the other hand, the moisture is stored by utilizing a high-efficiency water-absorbent resin, and the foaming reaction rate of the powdered aluminum and water can be regulated by a soluble starch film, so that the prepared aggregate is low in apparent density, easy to float in water, dense in shell structure, low in crush index and high in water erosion resistance; and when the lightweight aggregate is used for making a concrete floating bed, the wind and wave resistance of the floating bed can be increased, and the polluted water is convenient to control.

Description

technical field [0001] The invention relates to a hollow lightweight aggregate and a preparation method thereof, belonging to the technical field of cement concrete. Background technique [0002] Eutrophication of water bodies is a global water environment problem. There are more than 2,700 lakes in my country, with a total area of ​​91,000 km 2 . According to the survey data and domestic and foreign evaluation indicators of lake eutrophication, among the 37 typical major lakes in China, 55.8% are medium eutrophic and medium eutrophic, 14.7% are eutrophic, and 14.7% are heavy eutrophic. 8.8%. More than 90% of water pollution in China is caused by eutrophication caused by excessive N and P content in water bodies, while N and P are the most basic essential nutrients for plant growth. [0003] The ecological floating bed technology is to implant the selected and domesticated aquatic (terrestrial) plants with strong functions of absorbing organic pollutants in the water into...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C04B18/02
CPCC04B18/027C04B2103/0051C04B24/38C04B22/04C04B14/02C04B7/323C04B24/085
Inventor 宫晨琛马法豪吴波芦令超
Owner UNIV OF JINAN
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