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Expansive rock and soil modifier

A modifier and expansive rock technology, applied in the field of basic engineering, can solve the problems of difficult construction treatment, unstable expansive rock and soil performance, modification effect and other problems

Inactive Publication Date: 2015-11-04
NANYANG INST OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] When the water content is small, the expansive rock and soil are very dry, hard and hardened, and it is not easy to carry out construction treatment; when the water content is large, it will expand when it encounters water. This characteristic destroys many well-built projects, thus giving The construction and construction schedule of road construction, railway construction, water conservancy construction and other fields in our country have brought huge troubles
[0004] The traditional way to deal with expansive rock and soil is to use lime, cement and other methods, but the water stability of the expansive rock and soil treated by these methods is poor, and the properties of the modified expansive rock and soil are unstable. often fail to achieve the expected modification effect

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0017] A swelling rock soil modifier, the main components are calculated by weight percentage:

[0018] Active metal oxide Al 2 O 3 , Fe2O3, CaO, MgO, CoO, CUO, of which Al 2 O 3 18.6%, Fe2O 3.7%, CaO 24.4%, MgO 4.7%, CoO 3.5%, CUO 11.2%; active non-metal oxide SiO 2 , SeO 2 , Where SiO 2 It is 41.6%, SeO is 3.55%, and nucleating material manganese slag is 8.82%.

[0019] The particle size of the nucleating material manganese slag is 40 mesh, and contains 54.7% of MnO2, 7.55% of Fe2O3, and SiO 2 It is 37.2%.

[0020] The invention also discloses a preparation method of the expansive rock and soil modifier, which is mainly carried out in the following steps:

[0021] (1) The metal oxide, non-metal oxide and manganese slag are respectively fired in a furnace at 1100°C for 70 minutes, 1250°C for 70 minutes, and 1390°C for 150 minutes;

[0022] (2) Metal oxides, non-metal oxides and manganese slag are configured into expanded rock soil modifier mixed wool according to the determined compo...

Embodiment 2

[0025] A swelling rock soil modifier, the main components are calculated by weight percentage:

[0026] Active metal oxide Al 2 O 3 , Fe2O3, CaO, MgO, CoO, CUO, of which Al 2 O 3 18.6-18.9%, Fe2O 7.2%, CaO 26.3%, MgO 4.9%, CoO 3.9%, CUO 12.3%; active non-metal oxide SiO 2 , SeO 2 , Where SiO 2 It is 41.9%, SeO is 3.61%, and nucleating material manganese slag is 8.96%.

[0027] The particle size of the manganese slag skin of the nucleating material is 45 mesh, and contains 54.9% MnO2, 7.91% Fe2O3, and SiO 2 It is 37.5%.

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Abstract

The present invention discloses an expansive rock and soil modifier, wherein the main components comprise, by weight, active metal oxides such as 18.6-18.9% of Al2O3, 3.7-7.2% of Fe2O3, 24.4-26.3% of CaO, 4.7-4.9% of MgO, 3.5-3.9% of CoO and 11.2-12.3% of CUO, active non-metallic oxides such as 41.6-41.9% of SiO2 and 3.55-3.61% of SeO2, and 8.82-8.96% of a nucleating material manganese slag skin. The present invention further discloses a preparation method of the expansive rock and soil modifier. With the expansive rock and soil modifier of the present invention, the modified expansive rock and soil has characteristics of seepage prevention, environmental protection, low strength, low elastic modulus, and the like.

Description

Technical field [0001] The invention relates to the field of basic engineering, in particular to an expansive rock soil modifier. Background technique [0002] Expansive rock and soil are widely used in various engineering fields, and my country is one of the countries with the most extensive distribution of expansive rock and soil. About one-tenth of a kilometer in my country has to pass through the swelling rock and soil distribution area, and the economic loss caused by the swelling rock and soil in my country is 10 billion yuan every year. [0003] When the water content is small, the swelling rock and soil is very dry and hardened, and it is not easy to carry out construction treatment. When the water content is large, it will swell with water. This feature makes many well-constructed projects destroyed once, thus giving The construction and schedule of road construction, railway construction, water conservancy construction and other fields in our country have brought huge tr...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09K17/08
Inventor 季宪军梁瑛井珉尹晓清李伟伟王爽
Owner NANYANG INST OF TECH