Foaming agent for earthwork

A technology of foaming agent and foam stabilizer, which is applied in applications, household appliances, and other household appliances, etc., can solve the problems of limited raw material resources, complicated preparation process, unstable performance, etc., and achieve simple preparation process, wide application range, The effect of stable performance

Inactive Publication Date: 2003-10-15
HOHAI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Traditional foaming agents use sodium rosinate, which is limited by its limited raw material resources, complicated preparation process, perishable quality and unstable performance.

Method used

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  • Foaming agent for earthwork

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] Compounding sodium lauryl sulfate with alkanolamide and auxiliary agent calcium chloride can obtain a foaming agent with high foaming efficiency and good foam stabilizing performance. The weight percentage is:

[0025] Lauryl Sulfate 5%

[0026] Alkanolamide 2.5%

[0027] Calcium Chloride 1%

[0028] Water 91.5%

[0029] When in use, the prepared foaming solution is foamed by a foaming device, and the time required for 50% of foaming and defoaming is 72 minutes. It is suitable for making light materials such as air bubble mixed light soil and foam concrete. Compared with similar foreign products that achieve the same index, the cost is reduced by 30%.

Embodiment 2

[0031] Compounding sodium lauryl sulfate with alkanolamide and fatty alcohol polyoxyethylene ether sodium sulfate, etc., its mass percentage:

[0032] Lauryl Sulfate 5%

[0033] Alkanolamide 4%

[0034] Sodium fatty alcohol polyoxyethylene ether sulfate 4%

[0035] Water 87%

[0036] When in use, the prepared foaming solution is foamed by a foaming device, and the time required for 50% of foaming and defoaming is 15 minutes. It is suitable for soil improvement in the pressure chamber of the shield machine in the earth pressure balance shield tunneling construction. Compared with similar foreign products that achieve the same index, the cost is reduced by 40%.

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Abstract

The earthwork foaming agent consists of linear alkylsulphate 1-10 wt%, foam stabilizer alkylolamide and fatty alcohol polyoxyethyleneether sodium sulphate 0.5-4 wt%, assistant calcium chloride 1-2 wt% and water 89.5-97.5 wt%. The compounding process is mixing the components through stirring at normal temperature. The foaming agent of the present invention can produce stable white bubbles in high efficiency, and may be used widely in producing foamed concrete, light foamed brick and light bubble earth and may be used also in earth improvement earth pressure balancing shield construction.

Description

technical field [0001] The invention relates to a foaming agent for geotechnical use with high foaming efficiency and good foam stabilizing performance, which can be used in the production of air bubbles for soil quality improvement in the construction of tunnel excavators in underground engineering or porous lightweight soil, foam concrete, etc. Production of air cells required in the production of lightweight materials. It belongs to the technical field of civil construction materials. Background technique [0002] In recent years, countries all over the world have attached great importance to the research and development of porous concrete, and achieved certain results. Porous concrete, especially foam concrete, is becoming an eye-catching building material due to its outstanding advantages, and has been widely used in construction engineering. The research and application of foam concrete in my country is earlier than that of air-entrained concrete, but because its tec...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B28/02C04B38/02
CPCC04B28/02
Inventor 朱伟秦建设钟小春张志允季亚平
Owner HOHAI UNIV
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