Clay-based compound sand consolidating material

A clay and raw material technology, applied in the field of sand-fixing materials and clay-based composite sand-fixing materials, can solve the problems of low compressive strength, complex preparation process and high cost, and achieve the advantages of reducing evaporation of water, simple sand-fixing process and high compressive strength. Effect

Active Publication Date: 2011-11-02
NORTHWEST NORMAL UNIVERSITY
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  • Abstract
  • Description
  • Claims
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Problems solved by technology

[0005] Chinese patent ZL00109093.3 discloses a powder sand-fixing agent composed of polyacrylamide water-retaining agent and bentonite, but due to the low crust strength of the prepared material, it is difficult to meet the requirements of stable sand-fixing
Chinese patent CN101665698A discloses an attapulgite clay-based composite liquid sand-fixing material, which has low compressive strength and poor weather resistance, and is not suitable for practical application and promotion
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Method used

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  • Clay-based compound sand consolidating material

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Experimental program
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Effect test

Embodiment 1

[0041] Take 3 parts of loess, 0.01 part of sodium silicate, 0.02 part of aluminum chloride, and 0.01 part of polyacrylamide, mix them evenly, and make a solution with a solid content of 10% with water, spray evenly on the surface of the sand, and let it dry in the open air. Allow to dry naturally to form a consolidated skin.

[0042] Compressive strength of consolidated skin: when the thickness is 5mm, the compressive strength reaches 0.12MPa;

[0043] Water permeability: water completely soaks through the consolidated skin within 2 seconds.

[0044] Aging resistance: After 240 hours of continuous irradiation with a 60W ultraviolet lamp, the strength of the consolidated skin will not decrease by more than 0.5%.

Embodiment 2

[0046] Take 6 parts of loess, 0.02 part of sodium silicate, 0.05 part of aluminum chloride, and 0.03 part of polyacrylamide, mix them evenly, and make a solution with a solid content of 15% with water, spray evenly on the surface of the sand, and let it dry in the open air. Allow to dry naturally to form a consolidated skin.

[0047] Compressive strength of consolidated skin: when the thickness is 5mm, the compressive strength reaches 0.21MPa;

[0048] Water permeability: water completely soaks through the consolidated skin within 3 seconds.

[0049] Aging resistance: After 240 hours of continuous irradiation with a 60W ultraviolet lamp, the strength of the consolidated skin will not decrease by more than 0.5%.

Embodiment 3

[0051] Take 3 parts of laterite, 0.03 part of potassium silicate, 0.8 part of aluminum chloride, and 0.03 part of methyl cellulose, mix them evenly, and make a solution with a solid content of 20% with water, spray evenly on the surface of the sand, and let it dry in the open air. It dries naturally, forming a consolidated skin.

[0052] Compressive strength of consolidated skin: when the thickness is 5mm, the compressive strength reaches 1.3MPa;

[0053] Water permeability: Water completely soaks through the consolidated skin within 4 seconds.

[0054] Aging resistance: After 240 hours of continuous irradiation with a 60W ultraviolet lamp, the strength of the consolidated skin will not decrease by more than 0.5%.

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Abstract

The invention discloses a clay-based compound sand consolidating material and belongs to the technical field of sand prevention and consolidation. The clay-based compound sand consolidating material is made of clay, sodium silicate, lewis acid, organic polymer and the like according to a certain ratio. The material is added with water to form solution at certain concentration by adding water, andthe solution is sprayed onto the surface of sand and naturally dries in an open environment to form a consolidated skin; or the clay and sand are uniformly mixed according to a certain ratio and pilled in grids, then solution prepared from the sodium silicate, lewis acid, organic polymer and water is sprayed onto the surface of the grids and naturally dries in an open environment to form consolidated skin, and thus, sand preventing and consolidating clay grids are formed. The consolidated skin of the sand consolidating material disclosed by the invention has high pressure strength, high waterpermeability, high weather resistance, and good sand consolidating effect; and the raw materials are readily available, the sand consolidation process is simple, the cost is low and the clay-based compound sand consolidating material is suitable to be promoted in a large area in desert regions.

Description

Technical field [0001] The present invention is a sandproof and sand -fixing technology field, which involves a sand fixing material, and especially involves a clay base composite sand fixing material. Background technique [0002] my country is one of the countries with a very serious desertification. Desertification has seriously affected my country's economic development and social progress. One of the important factors of desertification is the flow of the dunes and occupy a large number of good fields. Therefore The expansion of the existing sand mold area is an urgent task. [0003] Since the 1950s, Chinese scientific researchers have explored more than 100 desertified governance technologies and prevention models.The methods used are several types of engineering sand, plant sand fixing, and chemical sand.Engineering sand refers to mechanical sand barriers and sand. It mainly uses materials such as firewood, grass, branches, clay, pebbles, plates and other materials. Variou...

Claims

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Application Information

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IPC IPC(8): C09K17/40
Inventor 雷自强王爱娣马国富张志芳彭辉张哲
Owner NORTHWEST NORMAL UNIVERSITY
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