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Degradable aggregate having fertilizer efficiency slow releasing performance and preparation method thereof

A slow-release performance and aggregate technology, applied in the field of degradable aggregate and its preparation, can solve the problems of concrete cracking, reduced porosity, unable to meet the needs of plants, etc., and achieves loose structure, high activity, good fertilizer effect slow release and The effect of degradable properties

Active Publication Date: 2019-07-05
UNIV OF JINAN
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, after the concrete has been in service for a period of time, the roots of the plants and the sediment washed by the rainwater enter the interior of the concrete, resulting in a decrease in porosity, which causes concrete cracking
At the same time, the fertilizer applied to planting plants is becoming thinner under the action of rainwater washing and plant absorption, which cannot meet the needs of plants

Method used

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  • Degradable aggregate having fertilizer efficiency slow releasing performance and preparation method thereof
  • Degradable aggregate having fertilizer efficiency slow releasing performance and preparation method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0031] A preparation method of degradable aggregate with fertilizer effect slow-release performance, comprising the steps of:

[0032] (1) Mix 2 parts of cellulose ether, 2 parts of soluble starch and 5 parts of water evenly, then add 75 parts of tartaric acid in 2 times and stir for 15 minutes, dry at 60°C for 10 minutes, and grind for 10 minutes to obtain Coated tartaric acid;

[0033] (2) Stir 45 parts of magnesium oxide powder, 15 parts of ammonium dihydrogen phosphate, 17 parts of water and 2 parts of sodium fatty acid in an ammonia atmosphere and a closed container at 30°C until a large amount of magnesium ammonium phosphate hexahydrate precipitates appear, bake Dry and grind again for 10 minutes to obtain magnesium ammonium phosphate hexahydrate powder;

[0034] (3) Stir 5 parts of aluminum powder and 2 parts of water for 5 minutes, add 50 parts of magnesium ammonium phosphate hexahydrate powder, 5 parts of coated tartaric acid, 5 parts of sodium bicarbonate and 5 part...

Embodiment 2

[0036] A preparation method of degradable aggregate with fertilizer effect slow-release performance, comprising the steps of:

[0037] (1) Mix 5 parts of cellulose ether, 10 parts of soluble starch and 10 parts of water evenly, then add 91 parts of tartaric acid in 6 times and stir for 60 minutes, dry at 80°C for 30 minutes, and grind for 30 minutes to obtain Coated tartaric acid;

[0038] (2) Stir 60 parts of magnesium oxide powder, 25 parts of ammonium dihydrogen phosphate, 38 parts of water and 8 parts of sodium fatty acid in an ammonia atmosphere and a closed container at 50°C until a large amount of magnesium ammonium phosphate hexahydrate precipitates appear, bake Dry and grind again for 30 minutes to obtain magnesium ammonium phosphate hexahydrate powder;

[0039] (3) Stir 10 parts of aluminum powder and 6 parts of water for 10 minutes, add 75 parts of magnesium ammonium phosphate hexahydrate powder, 10 parts of coated tartaric acid, 10 parts of sodium bicarbonate and ...

Embodiment 3

[0041] A preparation method of degradable aggregate with fertilizer effect slow-release performance, comprising the steps of:

[0042] (1) Mix 3 parts of cellulose ether, 5 parts of soluble starch and 8 parts of water evenly, then add 80 parts of tartaric acid in 4 times and stir for 45 minutes, dry at 70°C for 20 minutes, and grind for 20 minutes to obtain Coated tartaric acid;

[0043] (2) Stir 50 parts of magnesium oxide powder, 20 parts of ammonium dihydrogen phosphate, 32 parts of water and 6 parts of fatty acid sodium in an ammonia atmosphere and a closed container at 40°C until a large amount of magnesium ammonium phosphate hexahydrate precipitates appear, bake Dry and grind for 20 minutes to obtain magnesium ammonium phosphate hexahydrate powder;

[0044] (3) Stir 7 parts of aluminum powder and 4 parts of water for 6 minutes, add 60 parts of magnesium ammonium phosphate hexahydrate powder, 7 parts of coated tartaric acid, 8 parts of sodium bicarbonate and 12 parts of Po...

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Abstract

The invention belongs to the field of vegetative ecological concrete and particularly relates to a degradable aggregate having fertilizer efficiency slow releasing performance and a preparation methodthereof. The degradable aggregate comprises, by weight, 2-5 parts of cellulose ether, 2-10 parts of soluble starch, 75-91 parts of tartaric acid, 45-60 parts of magnesium oxide powder, 15-25 parts ofammonium dihydrogen phosphate, 2-8 parts of sodium aliphatate, 5-10 parts of aluminum powder, 5-10 parts of sodium hydrogencarbonate and 5-15 parts of Portland cement. The degradable aggregate adoptsmagnesium ammonium phosphate hexahydrate as a main component, the release rate of tartaric acid is regulated according to the coating thickness of tartaric acid and the porosity of the aggregate, andcorrespondingly the pH value of an aqueous solution in pores of the aggregate is changed, so that the prepared aggregate has excellent fertilizer efficiency slow releasing performance and degradableperformance.

Description

technical field [0001] The invention belongs to the field of plant-growing ecological concrete, and in particular relates to a degradable aggregate with fertilizer effect slow-release performance and a preparation method thereof. Background technique [0002] In the Background of the Invention, the disclosed information is only intended to increase the understanding of the general background of the present invention, and is not necessarily to be regarded as an acknowledgment or in any form to imply that the information constitutes the prior art already known to those skilled in the art. [0003] Vegetative ecological concrete refers to concrete with special structure and function manufactured through material screening, adding functional additives, and using special technology. It has biocompatibility and ecological effects, can grow organisms, affect organisms, and reduce environmental load. Improve the coordination with the ecological environment. In the development of wa...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B18/02
CPCC04B18/027C04B18/021C04B14/366C04B22/10C04B24/06C04B22/04
Inventor 宫晨琛黄永波芦令超程新
Owner UNIV OF JINAN
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