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Ecological-suitability water-permeable green-growing concrete used for landscape watercourse revetment

A technology of planting concrete and suitability, which is applied in the field of ecologically suitable permeable planting concrete for landscape river slope protection, can solve the problems of limiting the scope of application of ordinary permeable planting concrete, reducing the pH value of concrete, and being unfavorable for plant growth, etc. Obvious indirect economic benefits, lower pH value and water permeability coefficient, good ecological and environmental protection effect

Active Publication Date: 2012-10-17
汇绿园林建设发展有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Ordinary concrete will produce calcium hydroxide accounting for 20%-30% of the cement stone volume due to cement hydration, making the concrete strongly alkaline, that is, the pH value is as high as 12-13, which is not conducive to the growth of plants; using fly ash and mineral powder, due to Its activity is limited, and it cannot effectively reduce and adjust the pH value of concrete. Only alkaline-resistant plants can be used for planting, which limits the scope of application of ordinary permeable planting concrete.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] Calculated by weight, it includes 350 parts of cement, 40 parts of metakaolin, 10 parts of limestone powder, 5 parts of polycarboxylate superplasticizer, 1300 parts of gravel, 10 parts of thickening powder and 150 parts of water.

[0021] The preparation method of the above concrete: mix 1300 parts of gravel and 75 parts of water first for 40 seconds, then add 10 parts of thickening powder, 40 parts of metakaolin, 10 parts of limestone powder and 350 parts of cement and mix for 45 seconds, and finally add 75 parts of Mix water and 5 parts of polycarboxylate superplasticizer for 50 seconds, pour out and vibrate to form (vibration is mainly for leveling, for equipment, if it is prepared in the laboratory, use a vibrating table; for the site, such as the commonly used plug-in type vibrator and flat vibrator), the vibration time should be controlled between 30 and 60 seconds, and put into the concrete standard curing room for curing until the age.

[0022] The 28-day techni...

Embodiment 2

[0024] Calculated by weight, it includes 380 parts of cement, 50 parts of metakaolin, 20 parts of limestone powder, 7 parts of polycarboxylate superplasticizer, 1400 parts of gravel, 10 parts of thickening powder and 135 parts of water. The preparation method is the same as in Example 1.

[0025] The 28-day technical indicators of the above-mentioned ecologically suitable high-strength permeable planting concrete for landscape river slope protection are: pH value 9, water permeability coefficient 13mm / s, compressive strength 31.7MPa and flexural strength 4.3MPa.

Embodiment 3

[0027] Calculated by weight, it includes 400 parts of cement, 60 parts of metakaolin, 10 parts of limestone powder, 10 parts of polycarboxylate superplasticizer, 1500 parts of gravel, 15 parts of thickening powder and 120 parts of water. The preparation method is the same as in Example 1.

[0028] The 28-day technical indicators of ecologically suitable high-strength permeable planting concrete for landscape river slope protection are: pH value 9, water permeability coefficient 11mm / s, compressive strength 33.8MPa and flexural strength 4.5MPa.

[0029] It can be seen from the test data of the concrete samples prepared in the above examples that the concrete of the present invention has the advantages of high strength, strong water permeability and suitable for vegetation growth.

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Abstract

The invention discloses an ecological-suitability water-permeable green-growing concrete used for landscape watercourse revetment. The ecological-suitability water-permeable green-growing concrete is characterized in that: preparation raw material of the concrete comprises the following components by weight: 350 to 400 parts of cement, 40 to 60 parts of metakaolin, 10 to 20 parts of lime powder, 5 to 10 parts of a polycarboxylic acid water reducing agent, 1300 to 1500 parts of gravel, 10 to 15 parts of thickening powder and 120 to 150 parts of water. The concrete beneficial to plant growth is of high pressure-resisting strength and can meet the requirement of harmonious and ecological coexistence of a landscape watercourse revetment project and a local habitat environment.

Description

technical field [0001] The invention belongs to the technical field of civil engineering materials, and in particular relates to an ecologically suitable permeable planting concrete for landscape river slope protection. Background technique [0002] According to the Japanese Ecological Concrete Revetment Construction Method, the 28d compressive strength of permeable plant concrete is required to be above 10MPa, and the porosity is between 21% and 30%. The rate is between 18% and 21% to ensure that the roots of the plants go deep into the gaps to strengthen the soil. Ordinary concrete will produce calcium hydroxide accounting for 20%-30% of the cement stone volume due to cement hydration, making the concrete strongly alkaline, that is, the pH value is as high as 12-13, which is not conducive to the growth of plants; using fly ash and mineral powder, due to Its activity is limited, and it cannot effectively reduce and adjust the pH value of concrete. Alkaline-resistant plants...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B28/00
Inventor 徐亦冬钱如南
Owner 汇绿园林建设发展有限公司
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