A preparation method of degradable aggregate with fertilizer effect

A technology of aggregate and fertilizer efficiency, applied in the field of degradable aggregate preparation, can solve the problems of poor growth and development of plants, damage to concrete structures, and huge plant root systems, and achieve the effects of preventing damage to concrete structures, promoting decay and decomposition, and simple process

Inactive Publication Date: 2018-10-26
UNIV OF JINAN
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, plant-growing ecological concrete has not been widely used at present. The fundamental reason is that there are still the following problems: there is no nutrient component required for plant growth in concrete, resulting in poor growth and development or even death of plants; because the strength of concrete is inversely proportional to porosity, In order to ensure the strength of concrete, the porosity is generally less than 38%, resulting in the phenomenon that the plant root system is too large and destroys the concrete structure

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] A method for preparing degradable aggregate with fertilizer effect, comprising the steps of:

[0021] (1) Crush the corn kernels and screen the particles with a particle size of 0.5-3mm, soak them in warm water at 65°C for 2 days, remove and drain.

[0022] (2) Stir 50% by weight of drained corn kernels, 1% phosphoric acid, 1% yeast, 40% saturated water-absorbing resin and 8% starch for 30 seconds, then granulate into balls with a particle size between 9- 10mm, get the aggregate core;

[0023] (3) After mixing 80% starch, 6% dextrin, 4% gum arabic, and 10% water by weight for 80 seconds, spray it on the surface of the aggregate core in a mist state to form a coating. The thickness of the soluble coating is the aggregate core 50% of the diameter, degradable aggregate was obtained after drying at 65°C.

[0024] The specific surface area of ​​the above-mentioned water-absorbent resin is 280m 2 / kg, the water absorption rate is 60; the specific surface area of ​​dextrin ...

Embodiment 2

[0028] A method for preparing degradable aggregate with fertilizer effect, comprising the steps of:

[0029] (1) Crush the corn kernels and screen the particles with a particle size of 0.5-3mm, soak them in warm water at 35°C for 5 days, remove and drain.

[0030] (2) After stirring 85% by weight of drained corn kernels, 3% phosphoric acid, 3% yeast, 7% saturated water-absorbing resin and 2% starch for 90 seconds, granulate into balls with a particle size between 5- 8mm, get the aggregate core;

[0031] (3) After mixing 90% starch, 2% dextrin, 2% gum arabic, and 6% water by weight for 30 seconds, spray it on the surface of the aggregate core in a mist state to form a coating. The thickness of the soluble coating is the aggregate core 20% of the diameter. The degradable aggregate was obtained after drying at 45°C.

[0032] The specific surface area of ​​the above-mentioned water-absorbent resin is 340m 2 / kg, the water absorption rate is 95; the specific surface area of ​​d...

Embodiment 3

[0036] A method for preparing degradable aggregate with fertilizer effect, comprising the steps of:

[0037] (1) Crush the corn kernels and screen the particles with a particle size of 0.5-3mm, soak them in warm water at 45°C for 4 days, remove and drain;

[0038] (2) After stirring 65% by weight of drained corn kernels, 2% phosphoric acid, 2% yeast, 23% saturated water-absorbing resin and 8% starch for 60 seconds, granulate into balls with a particle size between 7- 9mm, get the aggregate core;

[0039] (3) After mixing 85% starch, 4% dextrin, 5% gum arabic, and 6% water by weight for 50 seconds, spray it on the surface of the aggregate core in a mist state to form a coating. The thickness of the soluble coating is the aggregate core 40% of the diameter. The degradable aggregate was obtained after drying at 50°C.

[0040] The specific surface area of ​​the above-mentioned water-absorbent resin is 300m 2 / kg, the water absorption rate is 75; the specific surface area of ​​...

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Abstract

The invention discloses a method for preparing degradable aggregate with fertilizer efficiency and belongs to the technical field of energy-saving environment-friendly building materials. The method comprises the following steps: mixing crushed corn kernel particles with phosphoric acid, saccharomycetes, a water-saturated water-absorbent resin and starch, granulating into balls so as to obtain an aggregate core; and spraying a soluble envelope on the surface of the aggregate core in a mist state so as to form an envelope, drying, thereby obtaining the degradable aggregate with the fertilizer efficiency. The preparation method is simple, readily available in raw materials and low in cost, the prepared aggregate can provide the nutrition components needed for the growth of plants when used for vegetation ecological concrete and has low crush index and moisture absorption rate, and the strength requirement of the concrete aggregate is guaranteed. In addition, the aggregate can be naturally degraded within a certain period, does not cause any pollution to the environment, and provides more space for the growth of plant roots.

Description

technical field [0001] The invention relates to a method for preparing degradable aggregate with fertilizer effect, and belongs to the technical field of energy-saving and environment-friendly building materials. Background technique [0002] Ecological concrete is a concrete material that can adapt to the growth of animals and plants, and has a positive effect on regulating ecological balance, beautifying the environment and realizing the coordination between human beings and nature. The research and development time of this kind of concrete is not long. The emergence of ecological concrete marks that humans have adopted a more active and proactive attitude in the process of dealing with the relationship between concrete materials and the environment. Concrete is not only used as a building material to construct structures or buildings needed by human beings, but also a material that integrates with nature and has a positive protective effect on the natural environment and...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C04B20/10C05G3/00C04B28/00C04B38/00C04B16/00
CPCC04B20/1048C04B28/00C04B38/00C04B2103/0072C05F11/00C05G3/00C05G5/30C04B20/0016C04B16/00C04B22/165C04B24/38C04B24/24C04B2103/0001C04B14/02C04B22/002C04B2103/0068C05F11/08
Inventor 宫晨琛马法豪吴波芦令超
Owner UNIV OF JINAN
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