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Red mud-added ecological concrete and application of same in sewage purification

An ecological concrete and additive technology, applied in biological water/sewage treatment, water/sludge/sewage treatment, chemical instruments and methods, etc., can solve the problem of low decontamination ability

Inactive Publication Date: 2013-03-06
CHINA INST OF WATER RESOURCES & HYDROPOWER RES +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the current pollution-controlling ecological concrete has low decontamination ability, so the research and development of new ecological concrete is extremely necessary.
At present, there are no records and reports on the application of red mud to ecological concrete

Method used

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Examples

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Effect test

preparation example Construction

[0023] The preparation and laying method of red mud added type ecological concrete of the present invention comprises the following steps:

[0024] 1) Leveling: leveling the revetment slope to facilitate the construction of ecological concrete revetment;

[0025] 2) Moulding: According to the requirements of the revetment for the shape of the ecological concrete, construct the mold of the ecological concrete block (such as regular hexagon, square, etc.), and the height of the mold is set to 8-15cm, preferably 10cm;

[0026] 3) Pouring: Mix Portland slag cement, aggregates, water, red mud, and naphthalene-based high-efficiency superplasticizers evenly according to the design ratio of the present invention, and pour them into the module, and vibrate and tamp the concrete in the mold;

[0027] 4) Initial maintenance: After 7 days of normal temperature maintenance, remove the mold;

[0028] 5) Later maintenance: Continue to maintain for 7 to 14 days to make the ecological concret...

Embodiment 1

[0043] Due to the existence of sluices in a certain northern river, the river water is almost stagnant, the water level of the river is relatively stable and the water quality is poor. The current status of the river bank is a natural bank revetment, and the vegetation growth is normal. It is proposed to apply the present invention on the bank below the normal water level of the river, adopting on-site pouring of ecological concrete, and the specific implementation steps are as follows:

[0044] 1) Leveling: leveling the revetment slope to facilitate the construction of ecological concrete revetment;

[0045] 2) Mold making: according to the requirements of the revetment for the shape of ecological concrete, construct a regular hexagonal mold for ecological concrete blocks, and set the height of the mold to 10cm;

[0046] 3) Pouring: Mix 9 tons of slag portland cement, 80 tons of gravel, 4.0 tons of water, 1 ton of red mud and 150 kg of naphthalene-based superplasticizer acco...

Embodiment 2

[0051] The weight of each component in the ecological concrete is: 19 tons of slag portland cement, 130 tons of gravel, 8.0 tons of water, 1 ton of red mud and 200 kg of naphthalene-based superplasticizer. Other conditions are identical with embodiment 1.

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Abstract

The invention provides a red mud-added ecological concrete which comprises a cementing material, aggregate, water and a naphthalene-based superplasticizer, wherein the cementing material includes red mud and slag portland cement. According to the invention, through application of the red mud in ecological concrete, a pollutant purifying effect of the ecological concrete can be improved, the waste is turned into the valuable at the same time, and the red mud can be used to replace cementing materials like cement; thus, production cost of the ecological concrete is substantially reduced, and the ecological concrete has good strength and considerable practical application values.

Description

technical field [0001] The invention relates to the technical fields of environmental engineering and water conservancy engineering, in particular to a pollution-controlling ecological concrete and its application. Background technique [0002] Ecological concrete was first developed by Japan Taisei Institute of Construction Technology in 1993. In 1995, Japan formally proposed the concept of ecological concrete. Since then, international research on ecological concrete has gradually increased. Since around 2000, my country has also carried out research work on ecological concrete. [0003] The application and research of ecological concrete mainly lie in three aspects: 1) Vegetation-growing ecological concrete is mainly used in river revetment, which overcomes the shortcomings of the original "three-sided light" river channel ecological performance and poor hydraulic exchange performance, and makes the river channel and the bank While there is hydraulic communication in th...

Claims

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Application Information

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IPC IPC(8): C04B28/08C02F3/34
Inventor 毛战坡胡春明王亮王世岩刘畅杨素珍
Owner CHINA INST OF WATER RESOURCES & HYDROPOWER RES
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