CN110563388A

CN110563388A - ecological soil curing agent and preparation method thereof

Info

Publication number: CN110563388A
Application number: CN201910931513.7A
Authority: CN
Inventors: 陆疆; 肖越
Original assignee: Hainan Zhengwei Industrial Development Co Ltd
Current assignee: Hainan Zhengwei Industrial Development Co Ltd
Priority date: 2019-09-29
Filing date: 2019-09-29
Publication date: 2019-12-13
Anticipated expiration: 2039-09-29
Also published as: WO2021057931A1; ZA202200166B; CN110563388B

Abstract

The invention provides an ecological soil stabilizer and a preparation method thereof, wherein the soil stabilizer comprises the following raw materials in parts by weight: 0.01-0.06 part of dioctyl sodium sulfosuccinate, 0.7-3 parts of lignin fiber, 30-60 parts of salt, 20-50 parts of hydroxypropyl methyl cellulose, 3-18 parts of hydroxide, 1-13 parts of polyvinyl alcohol, 0.075-0.3 part of 2-ethylhexanol, 0.5-1.2 parts of isopropanol and 500-900 parts of water, and the soil curing agent enables the solidified soil to be easily compacted and stabilized, so that an integral structure is formed, and the prepared brick has high compression density; the soil curing agent prepared by the invention only needs simple mixing and stirring, has simple process steps and easy operation, can obtain the curing agent with high solid-to-waste ratio by controlling the stirring speed and time, and is used for preparing the building brick with strong compressive strength, low water absorption, low mass loss rate and obvious curing effect.

Description

ecological soil curing agent and preparation method thereof

Technical Field

The invention relates to the field of building materials, in particular to an ecological soil curing agent and a preparation method thereof.

Background

In order to solve the problem of environmental pollution, reduce the pollution discharge rate and improve the resource productivity, which becomes the focus of the current society, the construction waste, the tail end dregs and the silt are the most difficult to treat, the construction waste is utilized to prepare products such as bricks, but along with the continuous development of economy, the engineering construction foundation is increasingly complicated, as the construction waste meets the soil body reinforcement problem in the construction, the problem is increasingly complicated, the traditional soil curing agent needs complex processes such as high temperature and high pressure, the solid waste proportion of the product is about 30 percent, the reinforcement is easy to generate the problems such as dry shrinkage cracks, and the like, and the construction requirements of complex engineering can not be met.

Disclosure of Invention

in view of the above, the present invention provides an ecological soil stabilizer and a preparation method thereof, which solve the above problems.

The technical scheme of the invention is realized as follows: an ecological soil curing agent comprises the following raw materials in parts by weight: 0.01-0.06 part of dioctyl sodium sulfosuccinate, 0.7-3 parts of lignin fiber, 30-60 parts of salt, 20-50 parts of hydroxypropyl methyl cellulose, 3-18 parts of hydroxide, 1-13 parts of polyvinyl alcohol, 0.075-0.3 part of 2-ethylhexanol, 0.5-1.2 parts of isopropanol and 500-900 parts of water,

Further, the ecological soil curing agent comprises the following raw materials in parts by weight: 0.02 part of dioctyl sodium sulfosuccinate, 1.3 parts of lignin fiber, 45 parts of salt, 30 parts of hydroxypropyl methyl cellulose, 11 parts of sodium hydroxide, 7 parts of polyvinyl alcohol, 0.19 part of 2-ethylhexanol, 0.8 part of isopropanol and 800 parts of water.

The invention also provides a preparation method of the ecological soil curing agent, which comprises the following steps: mixing and stirring salt, hydroxypropyl methyl cellulose, polyvinyl alcohol and sodium hydroxide at normal temperature, adjusting the pH value to 5-7, adjusting the stirring speed to 60-600 r/min, stirring for 60-200 min, standing for 2-8 h, adding lignin fiber, dioctyl sodium sulfosuccinate, 2-ethylhexanol, isopropanol and purified water, stirring, controlling the stirring speed to 60-800 r/min, and stirring for 30-50 min to obtain the ecological soil curing agent.

Compared with the prior art, the invention has the beneficial effects that: the ecological soil curing agent provided by the invention has a reasonable formula and scientific proportion, changes the tissue architecture of soil, enhances the adsorption among silt soil particles, and plays a role in curing and hardening the soil, all the components play a role in mutual cooperation, can treat the adsorbed water in the soil and change the hydrophilicity and hydrophobicity among water molecules of the soil, the engineering property of the soil is changed through a series of physical and chemical reactions after the soil curing agent is mixed with the soil, a large amount of free water in the soil can be fixed in the form of crystal water, so that the surface current of a soil micelle is reduced, an electric double layer adsorbed by the micelle is thinned, the electrolyte concentration is enhanced, the particles tend to agglomerate and expand in volume to further fill soil pores, and the cured soil is easy to compact and stabilize under the action of compaction work, so that an integral structure is formed, and the prepared brick has high compaction density; the soil curing agent prepared by the invention only needs simple mixing and stirring, has simple process steps and easy operation, can obtain the curing agent with high solid-to-waste ratio by controlling the stirring speed and time, and is used for preparing the building brick with strong compressive strength, low water absorption, low mass loss rate and obvious curing effect.

Detailed Description

In order to better understand the technical content of the invention, specific examples are provided below to further illustrate the invention.

The experimental methods used in the examples of the present invention are all conventional methods unless otherwise specified.

The materials, reagents and the like used in the examples of the present invention can be obtained commercially without specific description.

Example 1

An ecological soil curing agent comprises the following raw materials in parts by weight: 0.01 part of dioctyl sodium sulfosuccinate, 0.7 part of lignin fiber, 30 parts of salt, 20 parts of hydroxypropyl methyl cellulose, 3 parts of sodium hydroxide, 1 part of polyvinyl alcohol, 0.075 part of 2-ethylhexanol, 0.5 part of isopropanol and 500 parts of purified water.

Example 2

An ecological soil curing agent comprises the following raw materials in parts by weight: 0.06 part of dioctyl sodium sulfosuccinate, 3 parts of lignin fiber, 60 parts of salt, 50 parts of hydroxypropyl methyl cellulose, 18 parts of sodium hydroxide, 13 parts of polyvinyl alcohol, 0.3 part of 2-ethylhexanol, 1.2 parts of isopropanol and 900 parts of purified water.

Example 3

An ecological soil curing agent comprises the following raw materials in parts by weight: 0.02 part of dioctyl sodium sulfosuccinate, 1.3 parts of lignin fiber, 45 parts of salt, 30 parts of hydroxypropyl methyl cellulose, 11 parts of sodium hydroxide, 7 parts of polyvinyl alcohol, 0.19 part of 2-ethylhexanol, 0.8 part of isopropanol and 800 parts of purified water;

The raw materials of the embodiments 1 to 3 are mixed and stirred at normal temperature to obtain the ecological soil curing agent.

Example 4

In the embodiment, the raw materials with the same weight parts as those in the embodiment 3 are adopted, and the preparation method of the soil stabilizer comprises the following steps:

Mixing and stirring salt, hydroxypropyl methyl cellulose, polyvinyl alcohol and sodium hydroxide at normal temperature, adjusting the pH to 6, stirring at the speed of 500r/min for 130min, standing for 5h, adding lignin fiber, dioctyl sodium sulfosuccinate, 2-ethylhexanol, isopropanol and purified water, stirring, controlling the stirring speed at 600r/min, and stirring for 40min to obtain the ecological soil curing agent.

Example 5

Mixing and stirring salt, hydroxypropyl methyl cellulose, polyvinyl alcohol and sodium hydroxide at normal temperature, adjusting the pH value to 5, stirring at the speed of 300r/min for 60min, standing for 2h, adding lignin fiber, dioctyl sodium sulfosuccinate, 2-ethylhexanol, isopropanol and purified water, stirring, controlling the stirring speed at 500r/min, and stirring for 30min to obtain the ecological soil curing agent.

Example 6

Mixing and stirring salt, hydroxypropyl methyl cellulose, polyvinyl alcohol and sodium hydroxide at normal temperature, adjusting the pH value to 7, stirring at the speed of 600r/min for 200min, standing for 8h, adding lignin fiber, dioctyl sodium sulfosuccinate, 2-ethylhexanol, isopropanol and purified water, stirring, controlling the stirring speed at 800r/min, and stirring for 50min to obtain the ecological soil curing agent.

Comparative example 1

The difference between the comparative example and the example 3 is that the soil stabilizer is prepared from the following raw materials in parts by weight: 0.09 part of dioctyl sodium sulfosuccinate, 0.5 part of lignin fiber, 20 parts of salt, 10 parts of hydroxypropyl methyl cellulose, 2 parts of sodium hydroxide, 0.8 part of polyvinyl alcohol, 0.05 part of 2-ethylhexanol, 0.2 part of isopropanol and 400 parts of purified water.

Comparative example 2

This comparative example is different from example 3 in that dioctyl sodium sulfosuccinate and 2-ethylhexanol were not included in the raw materials for preparing the above soil stabilizer in parts by weight.

Comparative example 3

This comparative example is different from example 3 in that hydroxypropyl methylcellulose and isopropyl alcohol are not included in the raw materials for preparing the soil stabilizer in parts by weight.

first, performance test

The building bricks prepared in the above examples 1-6 and comparative examples 1-3 were subjected to performance tests, and the analysis results were as follows:

The above table shows that the curing agent prepared by the embodiment 1-3 in scientific proportion has good effect when applied to the building brick in the embodiment 3; compared with the examples 3-6, the operation means for preparing the curing agent plays a certain role in the proportion, and the curing agent prepared by controlling the stirring speed, the stirring time and the pH has the advantages of compressive strength of 22.6MPa, water absorption of 12.8 percent, carbonization performance of 20.6MPa, softening coefficient of 0.92 and mass loss rate of 0.2 percent; example 3 in comparative examples 1 to 3, any one of the components of the curing agent is absent, the scientific proportion plays a great role, the optimal effect can be achieved only by reasonably setting the proportion, and the curing effect is obvious when the curing agent is applied to common bricks or ecological bricks.

The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.

Claims

1. an ecological soil curing agent is characterized in that: the feed comprises the following raw materials in parts by weight: 0.01-0.06 part of dioctyl sodium sulfosuccinate, 0.7-3 parts of lignin fiber, 30-60 parts of salt, 20-50 parts of hydroxypropyl methyl cellulose, 3-18 parts of hydroxide, 1-13 parts of polyvinyl alcohol, 0.075-0.3 part of 2-ethylhexanol, 0.5-1.2 parts of isopropanol and 500-900 parts of water.

2. The ecological soil stabilizer of claim 1, wherein: the feed comprises the following raw materials in parts by weight: 0.02 part of dioctyl sodium sulfosuccinate, 1.3 parts of lignin fiber, 45 parts of salt, 30 parts of hydroxypropyl methyl cellulose, 11 parts of hydroxide, 7 parts of polyvinyl alcohol, 0.19 part of 2-ethylhexanol, 0.8 part of isopropanol and 800 parts of water.

3. The ecological soil stabilizer of claim 1, wherein: the salt is refined industrial salt.

4. The ecological soil stabilizer of claim 1, wherein: the sodium dioctyl sulfosuccinate is ionic sodium dioctyl sulfosuccinate.

5. The ecological soil stabilizer of claim 1, wherein: the components are mixed and stirred at normal temperature according to the parts by weight to obtain the ecological soil curing agent.

6. The ecological soil stabilizer of claim 1, wherein: the preparation method comprises the following steps: mixing and stirring salt, hydroxypropyl methyl cellulose, polyvinyl alcohol and sodium hydroxide at normal temperature, wherein the stirring speed is 60-600 r/min, the stirring time is 60-200 min, standing for 2-8 h, adding lignin fiber, dioctyl sodium sulfosuccinate, 2-ethylhexanol, isopropanol and purified water, stirring, controlling the stirring speed to be 60-800 r/min, and stirring for 30-50 min to obtain the ecological soil curing agent.

7. The ecological soil stabilizer of claim 5 or 6, wherein: the pH value is adjusted to 5-7 in the preparation method.