A method for preparing pore-stretching ecological concrete using sludge-bentonite base material
An ecological concrete and bentonite technology, applied in fertilizer mixture, application, household appliances and other directions, can solve difficult environmental problems and other problems, achieve broad market application prospects, low product cost, and save sludge treatment costs.
Active Publication Date: 2016-08-17
SOUTHWEAT UNIV OF SCI & TECH
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Problems solved by technology
Directly using sludge to prepare ecological bricks, although the process is simple, it is difficult to completely avoid the environmental problems caused by the harmful elements contained in it
There are few patents on the use of sludge to prepare ecological concrete, and the existing patents only use the characteristics of pores in the concrete during the sludge dehydration process to realize its porous characteristics. If the pores are controlled to change its water content and moisture retention characteristics not involved
Method used
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[0022] Example Table 3 The 30d leaching element concentration of pore-stretching ecological coagulation prepared by using sludge-bentonite base material (unit: ppm)
[0023]
[0024] Above-mentioned each embodiment batching and can produce the product that reaches the object of the present invention by aforesaid processing method. Embodiments of the present invention can be practiced, and the present invention is not limited to these embodiments.
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Abstract
The invention discloses a method for preparing pore-stretching type ecological concrete by utilizing sludge-bentonite base material. It first mixes bentonite and sludge evenly as a pore-forming base material, and then mixes the pore-forming base material with cement, fine sand, coarse aggregate, etc. in stages to form it, and then maintains it to obtain a pore-expandable ecological concrete product. The concrete prepared by the method has the characteristics of being porous and permeable, and also capable of retaining moisture, slow release of fertilizer effect, high strength and light weight, and the like.
Description
technical field [0001] The invention relates to a method for preparing pore-stretching type ecological concrete by using sludge-bentonite base material, and belongs to the technical field of resources and environment technology. Background technique [0002] With the development of social economy and urbanization in our country, the output of urban sewage is constantly increasing. Sludge is an accessory after sewage treatment. It is an extremely complex heterogeneous body composed of organic debris, bacterial cells, inorganic particles, and colloids. The main characteristics of sludge are that the water content is as high as about 90%, the content of organic matter is high, it is easy to rot and smell, and the particles are finer and the specific gravity is smaller. If the sludge is not disposed of finally, it will bring pollution to the environment again. At present, the disposal of sludge in my country is mainly landfill, with a small amount of composting and incineratio...
Claims
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IPC IPC(8): C04B28/04C04B18/30C04B14/10C04B38/00C05G3/00
CPCY02W30/91
Inventor 代群威王岩杨丽君黄云碧王彬
Owner SOUTHWEAT UNIV OF SCI & TECH