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Preparation method of porous concrete for plant growth

A technology of porous concrete and concrete, which is applied in the manufacture of tools, ceramic molding machines, etc., can solve the problems of not considering the important difference of planting porous concrete, not considering the porosity of concrete, the connectivity of pore size and pore, etc., so as to improve the quality of people's life , The preparation method is simple and reasonable, and the effect of high social and environmental benefits

Active Publication Date: 2014-09-17
CHINA CONSTR EIGHT ENG DIV CORP LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The preparation methods for vegetative porous concrete mainly include look-up table method, formula method, volumetric method, etc., but they do not consider the important difference between vegetative porous concrete and other concretes, that is, plants can be planted, and the porosity, pore size, and pore size of concrete are not considered. The influence of connectivity etc. on plants, which requires a simple and accurate calculation, scientific and reasonable preparation method of plant-grown porous concrete

Method used

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preparation example Construction

[0042] A kind of growing porous concrete preparation method of the present invention, comprises the following steps:

[0043] First, set the porosity range of the plant-grown porous concrete according to the application field of the plant-grown porous concrete; when the application field is bank revetment engineering, set the porosity range as 13% to 26%; when the application field is slope protection engineering, set the porosity range The range is 22% to 35%.

[0044] Then, the aggregate is selected, and the porosity of the vegetated porous concrete prepared from the aggregate is calculated:

[0045] Establish a corresponding numerical table of the side length of the sieve hole and the corresponding specific surface area coefficient of the aggregate sieve residue;

[0046] Find the corresponding value table and calculate the specific surface area coefficient of the current aggregate;

[0047] The specific surface area coefficient of the current aggregate is the sum of the ...

Embodiment 1

[0065] Example 1: Preparation of a plant-growing porous concrete applied to revetment engineering

[0066] First set the range of porosity as 19% to 21%, and then establish a numerical table corresponding to the side length of the sieve hole and the corresponding specific surface area coefficient of the sieved aggregate, see Table 1;

[0067]

[0068] Table 1 Corresponding value table

[0069] Choose 16.0mm ~ 19.0mm single-grade stones as aggregate, and the apparent density of stones is 2720kg / m 3 .

[0070] Stone close packing density 1620kg / m 3 , Porosity 41.5%. The thickness of the cemented slurry wrapping the stone is 1.0mm.

[0071] It can be seen from Table 1 that the specific surface area coefficient corresponding to the sieve residue of the stone is 0.00090m 2 / kg.

[0072] At this time, the specific surface area coefficient of the stone is = 0.00090m 2 / kg×100=0.090m 2 / kg.

[0073] Surface area per unit volume of stones = total mass of stones per unit volum...

Embodiment 2

[0093] Embodiment 2: A kind of planting porous concrete applied to slope protection engineering

[0094] First set the range of porosity as 29% to 31%, and then establish a corresponding value table of the side length of the sieve hole and the corresponding specific surface area coefficient of the sieved aggregate, see Table 1;

[0095] Choose 19.0mm ~ 26.5mm single-grade stones as aggregate, and the apparent density of the stones is 2188kg / m 3 .

[0096] Stone close packing density 1600kg / m 3 , porosity 42.3%. The thickness of the cemented slurry wrapping the stone is 1.0mm.

[0097] It can be seen from Table 1 that the specific surface area coefficient corresponding to the sieve residue of the stone is 0.00074m 2 / kg.

[0098] At this time, the specific surface area coefficient of the stone is = 0.00074m 2 / kg×100=0.074m 2 / kg.

[0099] Surface area per unit volume of stones = total mass of stones per unit volume x specific surface area coefficient of stones = 1600kg...

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Abstract

The invention discloses a preparation method of porous concrete for plant growth. The method comprises the following steps of: defining a range of porosity of the porous concrete for the plant growth according to the application field of the porous concrete for the plant growth; selecting aggregate and computing the porosity of the porous concrete for the plant growth prepared from the aggregate; judging whether the porosity of the porous concrete for the plant growth prepared from the aggregate is within the defined range of porosity of the porous concrete for the plant growth or not; if yes, selecting the aggregate, otherwise, selecting another aggregate; computing the dosage of cement slurry in unit volume; computing the dosage of each material in the unit volume; stirring the materials; and forming. The preparation method of the porous concrete for the plant growth disclosed by the invention is suitable for the plant growth and has the characteristics of being scientific, reasonable, simple and practical.

Description

technical field [0001] The invention relates to a method for preparing concrete, in particular to a method for preparing plant-grown porous concrete. Background technique [0002] Vegetative porous concrete is a kind of continuous macroporous structure with certain strength, which can make plants grow in its pores, and the plant root system can penetrate into the filling plant material in the concrete pores or continuously absorb the plant material or the soil under the concrete. Eco-friendly functional building materials with nutrients in the soil. Plant-growing porous concrete is composed of porous concrete that acts as a skeleton, planting materials in porous concrete, and plants, and is an organic combination of concrete and plants. Among them, the porous concrete that acts as a skeleton is different from ordinary porous concrete such as permeable concrete and lean concrete. It not only needs a certain porosity, but also has strict requirements on the size, connectivity...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B28B1/087B28B3/02
Inventor 王桂玲王龙志张海霞马洪娟崔鑫杜栋
Owner CHINA CONSTR EIGHT ENG DIV CORP LTD
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