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Method for preparing porous desert greening brick

A technology for greening bricks and deserts, which is applied in the field of preparation of porous desert greening bricks, can solve the problems of high polymer cost, limited use, production process and raw material source limitation, etc., and achieves low cost, convenient operation and simple process Effect

Inactive Publication Date: 2009-03-18
HAINAN UNIVERSITY
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

High molecular polymers have not been widely used due to their high cost, production process and raw material sources, and the toxicity of some organic polymers also limits their use.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0014] The preparation method of the porous desert greening brick provided by the present invention: fully mix bentonite and sand and add water glass to fully stir, wherein the weight ratio of sand and bentonite is 3:1, and the amount of water glass added in every 2000g of sand is 100 ~300mL; Put the mixed material into the mold for compression molding, and then soak it all in AlCl 3 The solidification is carried out in the solution, and the curing is carried out at normal temperature after the solidification and molding, so as to prepare porous desert greening bricks.

[0015] The AlCl 3 The concentration of the solution is 1.0-3.0 mol / L.

[0016] The curing time is 2-10 minutes.

[0017] The curing time is 3-10 days.

Embodiment 1

[0019] Fully mix bentonite and sand in a ratio of 3:1 by weight, then add water glass for full stirring, the amount of water glass added to every 2000g of sand is 180mL; put the mixed material into a mold and mold it, and then soak it all to a concentration of 2.5mol / L AlCl 3 Curing in the solution for 4 minutes, and curing at room temperature for 5 days after curing to prepare porous desert greening bricks.

Embodiment 2

[0021] Fully mix bentonite and sand in a ratio of 3:1 by weight, then add water glass for full stirring, the amount of water glass added to every 2000g of sand is 200mL; put the mixed material into a mold and mold it, and then soak it all to a concentration of 1.5mol / L AlCl 3 Curing in the solution for 7 minutes, curing at room temperature for 8 days after curing, and preparing porous desert greening bricks.

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Abstract

The invention discloses a method for preparing a porous desert greening brick, which is characterized in that the bentonite and sand are fully mixed, added with water glass with even stirring; the mixture is put in a mould for pressure forming, completely immersed in the AlCl3 solution for solidification and maintained after the solidification forming so as to prepare the porous desert greening brick. The method has the advantages of simple technological process, convenient operation and low cost, and with the filling action of the amorphous silicic acid gel generated by the reaction between the AlCl3 and the water glass and the characteristics of the bentonite, the environment friendly type desert greening brick which realizes the windbreak and sand fixing as well as vegetation greening can be effectively prepared.

Description

technical field [0001] The invention relates to a preparation method of a sand-fixing material, in particular to a preparation method of a porous desert greening brick. Background technique [0002] One of the biggest environmental and socio-economic problems facing the world today is land desertification. The rapid expansion of desertified land has caused environmental degradation and huge economic losses, and even caused social problems in some areas, which has become a hot spot of global concern. [0003] The currently used methods of sand fixation are mainly biological sand fixation, engineering sand fixation and chemical sand fixation. Simple biological sand fixation must be combined with chemical or mechanical sand barriers because the plants planted are either blown away or buried by wind and sand or cannot survive due to lack of water and drought. On the one hand, the cost of engineering sand fixation is high, on the other hand, the combination period with organism...

Claims

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Application Information

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IPC IPC(8): C04B28/00C04B14/06C04B14/12
CPCY02A40/22
Inventor 李建保邓湘云李婷董莉莉陈平张海涛吴新正陈永
Owner HAINAN UNIVERSITY
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