High-strength plant growing type porous concrete and preparation method thereof

A porous concrete and plant-based technology, applied in the direction of sustainable waste treatment, solid waste management, climate sustainability, etc., can solve the problems of poor durability, difficult transportation and construction, low strength, etc., and achieve good plant growth ability and ecological Restorative ability, ability to promote plant growth and ecological restoration ability, wide range of effects

Inactive Publication Date: 2011-04-13
孙学军 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Ordinary porous concrete has low strength due to its mixture ratio and mixing technology (or although it meets the strength requirements, but the thickness of the component is large, making it difficult to transport and construct), the porosity is small, the water permeability decreases with time, the durability is poor and the internal Too high a pH value is not conducive to plant growth and other shortcomings, which restricts its use in some areas with high strength requirements, large temperature differences, and heavy rainfall

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] A high-strength vegetation-type porous concrete, including water, cement, waste concrete or natural crushed stone aggregate, water reducing agent and rice straw, wherein the water-cement ratio is 1:3, and the ratio of waste concrete to cement is 10:1, The amount of water reducer is 1% of the amount of cement, the ratio of straw to waste concrete or natural crushed stone aggregate is 1000:3, the mixture is prepared according to the above weight ratio, and then mixed and stirred.

[0025] Among them, when it is difficult to obtain waste concrete aggregates, natural gravel can be used as aggregates.

Embodiment 2

[0027] A high-strength plant-based concrete, including water, cement, waste concrete or natural crushed stone aggregate, water reducing agent and rice straw, wherein the water-cement ratio is 1:3, and the ratio of waste concrete to cement is 10:1, reducing The dosage of the water agent is 1% of the cement dosage, the ratio of rice straw to waste concrete or natural gravel aggregate is 1000:3, the mixture is prepared according to the above weight ratio, and then mixed and stirred.

[0028] Among them, the waste concrete or natural crushed stone aggregate is aggregate with a single particle size of 4 cm, the length of straw straw is about 3 cm (such as 2.8, 2.9, 3.0, 3.1, 3.2 cm, etc.), and the cement used is ordinary 525 Portland cement. The water reducer used is polycarboxylate high performance water reducer.

Embodiment 3

[0030] A preparation method for high-strength plant-growing porous concrete, comprising the steps of:

[0031] 1. Crush the collected waste concrete, and take the aggregate with a particle size of 4cm after sieving;

[0032] 2. Crush the fully dried rice straw, and select the ones with a length of about 3cm for use;

[0033] 3. According to the water-cement ratio of 1:3, the ratio of waste concrete or natural crushed stone aggregate to cement is 10:1, the amount of polycarboxylate high-performance water reducer is 1% of the cement amount, rice straw and waste concrete Or the proportion of natural crushed stone aggregate is 1000:3 (both by weight) to prepare the mixture;

[0034] 4. During the mixing process, add 70% of the raw material water to the aggregate and stir for 1 minute; then add 50% of the raw cement, all polycarboxylate high-performance water reducers and all rice straw to the mixer Stir for 1 minute; finally add all the remaining cement and water into the mixer ...

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PUM

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Abstract

The invention discloses a high-strength plant growing type porous concrete and a preparation method thereof. The concrete comprises the following ingredients in proportioning by weight: water, cement, waste concrete or natural crushed stone aggregate, water reducing agents and rice straw. The preparation method comprises the steps of: firstly crushing the waste concrete or the natural crushed stone aggregate to be used as aggregate for later use; smashing the fully dried rice straw for later use; stirring the aggregate and a proper amount of water for a period of time; putting a proper amount of cement, the smashed rice straw and the water reducing agents into a stirrer for stirring; and finally, adding rest water and cement to be stirred. The high-strength plant growing type porous concrete can replace masonry flagstone with the strength of lower than M15, is applied to engineering projects such as raceways, parking lots, side slopes, riverbanks and the like and helps the growth of plants and restores the ecological environment destroyed by construction under the application condition.

Description

technical field [0001] The invention relates to the field of environment-friendly building materials, in particular to a high-strength plant-growing porous concrete and a preparation method thereof. Background technique [0002] In places such as reservoirs, river embankments, road slopes and mountain slope protection, which must be hardened and reinforced due to engineering needs, porous concrete has similar engineering properties to ordinary concrete, but it has plant growth properties that ordinary concrete does not have. Ecological restoration has gradually replaced ordinary concrete as the first construction material. Ordinary porous concrete has low strength due to its mixture ratio and mixing technology (or although it meets the strength requirements, but the thickness of the component is large, making it difficult to transport and construct), the porosity is small, the water permeability decreases with time, the durability is poor and the internal Too high a pH valu...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B28/00C04B28/04C04B18/16C04B18/24
CPCC04B28/02Y02W30/91C04B18/167C04B18/248C04B20/0076C04B20/026C04B40/0028C04B2103/302C04B14/02C04B24/2641
Inventor 孙学军周开壹
Owner 孙学军
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