CN114181709A - Liquid soil curing agent for improving water resistance and preparation method thereof - Google Patents
Liquid soil curing agent for improving water resistance and preparation method thereof Download PDFInfo
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- C—CHEMISTRY; METALLURGY
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Abstract
The invention relates to the technical field of soil curing agents, in particular to a liquid soil curing agent for improving water resistance and a preparation method thereof, wherein the liquid soil curing agent comprises the following components in percentage by mass: 6-16 parts of water-soluble biomass cellulose and organic biomass; the organic biomass comprises glycerol and fatty acid derivatives; the biological base and derivatives thereof comprise sodium dodecyl sulfate, sodium polycarboxylate, inorganic matters, lithium compounds, calcium compounds and aluminum phosphide; the solvent is pure water, the thickness of the double electric layers of the soil particles is changed by controlling the temperature as a main parameter, the soil particles are convenient to bond, and precipitates are generated to improve the water resistance. The water-soluble cellulose, sodium dodecyl sulfate and sodium polycarboxylate are adopted, so that the oleophylic part in the organic matter macromolecules covers the surface of soil particles, the integral stability of the particles and the release of free water are facilitated, the hydrophobicity of the soil can be improved, and the problems in the background art are solved.
Description
Technical Field
The invention relates to the technical field of soil curing agents, in particular to a liquid soil curing agent for improving water resistance and a preparation method thereof.
Background
Sustainable development is the subject of current development, and with the increasing importance of the country on ecological and environmental construction, resources such as sand and stone in construction industries such as buildings and roads are regulated, so that the cost of materials used in related industries is increased continuously, and biomass and soil such as natural sludge are favored as sustainable alternative materials.
The soil stabilizer is a novel environment-friendly energy-saving engineering material which can generate physical and chemical actions with soil components to change the soil property. It originates from developed countries such as the United states in the fifties of the last century, is mainly used for replacing traditional solidifying materials such as cement, lime, fly ash and the like, has the characteristics of small using amount, high efficiency and adjustable performance, and is widely applied to the fields of roads, water conservancy, airport runways, ramp soil conservation and the like. Compared with the traditional curing material, the curing material has the advantages of excellent engineering properties, harmony and unity with ecology through formula design, can not destroy the original soil ecological environment, and is one of the curing materials ideal in economic environment.
The soil stabilizer can be divided into powder and liquid in form, and can be divided into three major types of inorganic type, organic type and biological enzyme type in composition, and each has advantages and disadvantages. The inorganic soil curing agent is obtained by improving on the basis of cement, limestone and the like, mainly takes a powder shape, has good stability and low cost, is easy to crack and has unsatisfactory early strength; the organic curing agent is a liquid curing agent which takes macromolecules as a main component, has small dosage, is easy to control the strength and adjust the water resistance, but has limited application range generally, and is easy to age for the macromolecule type; the biological enzyme curing agent belongs to a biological curing agent, has an obvious curing effect on the high-plasticity clay, has higher preparation cost and is easy to degrade so as to influence the service life. Therefore, the curing agent with good advantages and disadvantages and complex formulation becomes the mainstream of the current industry development. Based on the consideration of comprehensive properties, on the premise of seeking high strength performance of the curing agent, high water resistance is an important index for strength maintenance and durability use of the curing agent, and the satisfaction of cheap and renewable raw materials such as biomass in strength, water resistance and economy including material price, waste utilization, construction convenience and the like is an urgent task of current soil curing agent development. Among them, organic (especially biomass organic) inorganic composite curing agents are advantageous in respect of the use of high requirements for strength and durability in connection with, for example, roads and river bank projects. In principle, water-containing and water-infiltrating are important factors affecting the strength and durability of soil as a material. Therefore, the development of a soil stabilizer with high water resistance is an urgent need of related engineering. From the perspective of green sustainability, the hydrophobic macromolecular organic biomass should become the first choice component of the water-resistant curing agent component, because its environment-friendly type will become a new generation of high-performance soil curing agent suitable for the next generation of engineering.
Therefore, based on the practical requirements, the use of traditional curing materials such as cement and the like and the formula of compounding bio-based organic matters and inorganic matters are reduced as much as possible, the water resistance related to other properties such as strength and durability is improved, the practical application of green engineering is facilitated, and the manufacturing technology of green fine chemical building materials is realized.
The patent with publication number CN109135761A discloses a novel environment-friendly soil curing agent, which comprises the following components of 10-25 parts of alkyl metal compound, 5-10 parts of triisopropanolamine, 6-20 parts of polyacrylate, 12-25 parts of water-soluble cellulose, 5-10 parts of phosphate and 3-8 parts of ferrous sulfate, and the balance of solvent.
The patent with publication number CN105038806B discloses a macromolecular organic soil stabilizer and a synthesis method thereof, wherein the disclosed components are as follows according to the parts by weight: 2-6 parts of magnesium chloride, 4-8 parts of calcium chloride, 0.3-0.8 part of calcium oxide, 0.3-0.8 part of magnesium oxide, 3-8 parts of acrylamide, 0.1-0.4 part of ammonium persulfate, 0.2-0.6 part of potassium persulfate, 10-20 parts of soluble cellulose, 5-15 parts of sodium carboxymethylcellulose, 0.5-1 part of sodium hydroxide and 50-70 parts of water.
The patent with publication number CN101525541B discloses a soil stabilizing and curing agent, which consists of two compositions of a soil stabilizer and a soil curing agent, and discloses that the soil curing agent consists of 17-25 parts of polyvinyl alcohol, 4-8 parts of polyvinylpyrrolidone, 3-6 parts of hydroxyethyl cellulose, 5-10 parts of polyethylene glycol, 2-4 parts of hydroxypropyl methyl cellulose and 47-69 parts of water.
In summary, it can be seen that how to establish a liquid soil stabilizer which is more environment-friendly and has high water resistance and a preparation method thereof in the prior art are technical problems to be solved.
Disclosure of Invention
In order to solve the problem, the invention provides a liquid soil curing agent for improving water resistance and a preparation method thereof. The water-soluble cellulose, sodium dodecyl sulfate and sodium polycarboxylate are adopted, so that the oleophylic part in the organic matter macromolecules covers the surface of soil particles, the integral stability of the particles and the release of free water are facilitated, the hydrophobicity of the soil can be improved, and the problems in the background art are solved.
In order to solve the technical problems, the technical scheme adopted by the invention is as follows: a liquid soil curing agent for improving water resistance comprises the following components in percentage by mass:
6-16 parts of water-soluble biomass cellulose and organic biomass, wherein the water-soluble cellulose comprises sodium carboxymethyl cellulose, hydroxypropyl methyl cellulose, lignocellulose and alginate fiber;
the organic biomass comprises 5-8 parts of glycerol and fatty acid derivatives, 4-10 parts of fatty acid and 12-20 parts of fatty acid derivatives;
the biological base and derivatives thereof comprise sodium dodecyl sulfate and sodium polycarboxylate, wherein 5-12 parts of sodium dodecyl sulfate is used; 2-8 parts of sodium polycarboxylate;
also included are inorganic materials, including, in particular, lithiates, calcides, and phosphoaluminates, wherein,
0.4-3 parts of lithium compound, 1.2-1.5 parts of calcium compound and 2-5 parts of phosphorus aluminide;
38 parts of solvent, wherein the solvent is pure water.
Preferably, the bio-based material and the derivative thereof may be natural biomass and the derivative thereof.
Preferably, the sodium dodecyl sulfate is formed by chemically and catalytically converting biomass higher fatty acid, and the sodium polycarboxylate is formed by catalytically converting glycerol.
Preferably, the fatty acid derivative is a fatty acid ester.
Preferably, the lithium compound is lithium hydroxide, the calcium compound is calcium hydroxide, and the phosphorus aluminide is aluminum silicate.
In order to solve the technical problems, the technical scheme adopted by the invention is as follows: a preparation method of a liquid soil stabilizer for improving water resistance comprises the following steps:
step 1, preparing a curing agent stock solution: adding water-soluble cellulose, glycerol, fatty acid methyl ester, sodium dodecyl sulfate and sodium polycarboxylate into 40 parts of distilled water, continuously stirring at room temperature to dissolve the water-soluble cellulose, the glycerol, the fatty acid methyl ester, the sodium dodecyl sulfate and the sodium polycarboxylate, and continuously stirring for 2 hours to obtain a curing agent stock solution;
step 2, adjusting the pH of the stock solution: adding the curing agent stock solution obtained in the step 1 into a calcification adjusting solution system, heating the solution after adjusting the pH, and continuously stirring for more than 2 hours to obtain the curing agent stock solution after adjusting the pH;
step 3, preparing a soil stabilizer: and (3) sequentially adding a lithium compound and a phosphorus aluminide into the pH-adjusted curing agent stock solution obtained in the step (2), keeping the heating temperature unchanged, continuously stirring for more than 4 hours, and cooling the stirred solution to room temperature to obtain a mixture, wherein the obtained mixture is the target soil curing agent.
Preferably, the pH value adjusting range of the solution system in the step 2 is 6.5-8.
Preferably, in the step 2 and the step 3, the heating temperature of the curing agent stock solution is 45-70 ℃.
The liquid soil curing agent for improving water resistance and the preparation method thereof can achieve the following beneficial effects:
the invention uses renewable and environment-friendly bio-based and bio-based derivatives as organic components, has the characteristics of green and renewable property, is environment-friendly, ensures that the obtained liquid curing agent is more compatible with natural soil, can ensure that the cured soil keeps the original ecological property to a certain extent, and can reduce the damage to the soil environment after curing.
The preparation process has the advantages of extremely simple requirements on conditions and equipment, simple process steps, capability of completely converting the raw materials into the curing agent product, low raw material cost, high raw material utilization rate and low production cost, and the liquidity of the liquid soil curing agent is convenient for the construction of green fine chemical building materials.
The invention adopts the method of compounding the organic matter and the inorganic matter to improve the curing performance of the soil curing agent, effectively improves the water resistance of the soil after curing, prolongs the service life, can reduce the social cost, saves the resources, improves the soil curing efficiency, and is suitable for the soil curing treatment of roads, airports and agricultural slopes in natural rain erosion.
The preparation method of the invention adopts the calcification compound to adjust the pH value of the soil stabilizer, is suitable for curing the soil with different pH properties, and shows better adaptability.
Detailed Description
The following examples are only for illustrating the technical solutions of the present invention more clearly, and the protection scope of the present invention is not limited thereby.
The present invention will be further described with reference to the following examples.
Example 1:
the embodiment provides a liquid soil curing agent for improving water resistance and a preparation method thereof, and the specific method comprises the following steps:
1. raw materials
Sodium carboxymethylcellulose, glycerol, fatty acid methyl ester, sodium p-dodecyl sulfonate, sodium polycarboxylate, lithium hydroxide, calcium hydroxide, aluminum silicate and distilled water.
2. Preparation procedure
Step 1, preparing a curing agent stock solution: adding 13 parts of sodium carboxymethylcellulose, 4 parts of glycerol, 6 parts of fatty acid, 18 parts of fatty acid methyl ester, 10 parts of sodium dodecyl sulfate and 3 parts of sodium polycarboxylate into 40 parts of distilled water according to the mass ratio, continuously stirring at room temperature to dissolve the sodium dodecyl sulfate and the sodium polycarboxylate, and continuously stirring for 2 hours to obtain a curing agent stock solution;
step 2, adjusting the pH of the stock solution: adding 1.2 parts of calcium hydroxide into the curing agent stock solution obtained in the step 1 to adjust the pH value of the solution system to 7, adjusting the pH value, heating the solution to 50 ℃, and continuously stirring for more than 2 hours to obtain the curing agent stock solution with the system pH value of 7;
step 3, preparing a soil stabilizer: and (3) sequentially adding 1.8 parts of lithium hydroxide and 3 parts of aluminum silicate into the pH-adjusted curing agent stock solution obtained in the step (2), keeping the heating temperature at 50 ℃, continuously stirring for more than 4 hours, and cooling the stirred solution to room temperature to obtain a mixture, wherein the obtained mixture is the target soil curing agent.
The embodiment also provides a bio-based high water resistance liquid soil curing agent prepared by the preparation method.
Example 2:
the embodiment provides a preparation method of a bio-based high water resistance liquid soil curing agent, which comprises the following specific steps:
1. raw materials
Hydroxypropyl methylcellulose, glycerol, fatty acid methyl ester, sodium dodecyl sulfate, sodium polycarboxylate, lithium hydroxide, calcium hydroxide, aluminum silicate and distilled water.
2. Preparation procedure
Step 1, preparing a curing agent stock solution: adding 13 parts of hydroxypropyl methyl cellulose, 4 parts of glycerol, 6 parts of fatty acid, 18 parts of fatty acid methyl ester, 10 parts of sodium dodecyl sulfate and 3 parts of sodium polycarboxylate into 40 parts of distilled water according to the mass ratio, continuously stirring at room temperature to dissolve the mixture, and continuously stirring for 2 hours to obtain a curing agent stock solution;
step 2, adjusting the pH of the stock solution: adding 1.2 parts of calcium hydroxide into the curing agent stock solution obtained in the step 1 to adjust the pH value of the solution system to 7, adjusting the pH value, heating the solution to 50 ℃, and continuously stirring for more than 2 hours to obtain the curing agent stock solution with the system pH value of 7;
step 3, preparing a soil stabilizer: and (3) sequentially adding 1.8 parts of lithium hydroxide and 3 parts of aluminum silicate into the pH-adjusted curing agent stock solution obtained in the step (2), keeping the heating temperature at 50 ℃, continuously stirring for more than 4 hours, and cooling the stirred solution to room temperature to obtain a mixture, wherein the obtained mixture is the target soil curing agent.
The embodiment also provides a bio-based high water resistance liquid soil curing agent prepared by the preparation method.
Example 3:
the embodiment provides a preparation method of a bio-based high water resistance liquid soil curing agent, which comprises the following specific steps:
1. raw materials
Sodium carboxymethylcellulose, glycerol, fatty acid methyl ester, sodium p-dodecyl sulfonate, sodium polycarboxylate, lithium hydroxide, calcium hydroxide, aluminum silicate and distilled water.
2. Preparation procedure
Step 1, preparing a curing agent stock solution: adding 10 parts of sodium carboxymethylcellulose, 4 parts of glycerol, 6 parts of fatty acid, 18 parts of fatty acid methyl ester, 12 parts of sodium dodecyl sulfate and 4 parts of sodium polycarboxylate into 40 parts of distilled water according to the mass ratio, continuously stirring at room temperature to dissolve the sodium dodecyl sulfate and the sodium polycarboxylate, and continuously stirring for 2 hours to obtain a curing agent stock solution;
step 2, adjusting the pH of the stock solution: adding 1.2 parts of calcium hydroxide into the curing agent stock solution obtained in the step 1 to adjust the pH value of the solution system to 7, adjusting the pH value, heating the solution to 50 ℃, and continuously stirring for more than 2 hours to obtain the curing agent stock solution with the system pH value of 7;
step 3, preparing a soil stabilizer: and (3) sequentially adding 1.8 parts of lithium hydroxide and 3 parts of aluminum silicate into the pH-adjusted curing agent stock solution obtained in the step (2), keeping the heating temperature at 50 ℃, continuously stirring for more than 4 hours, and cooling the stirred solution to room temperature to obtain a mixture, wherein the obtained mixture is the target soil curing agent.
The embodiment also provides a bio-based high water resistance liquid soil curing agent prepared by the preparation method.
Example 4:
the embodiment provides a preparation method of a bio-based high water resistance liquid soil curing agent, which comprises the following specific steps:
1. raw materials
Sodium carboxymethylcellulose, glycerol, fatty acid methyl ester, sodium p-dodecyl sulfonate, sodium polycarboxylate, lithium hydroxide, calcium hydroxide, aluminum silicate and distilled water.
2. Preparation procedure
Step 1, preparing a curing agent stock solution: adding 13 parts of sodium carboxymethylcellulose, 4 parts of glycerol, 6 parts of fatty acid, 18 parts of fatty acid methyl ester, 10 parts of sodium dodecyl sulfate and 3 parts of sodium polycarboxylate into 40 parts of distilled water according to the mass ratio, continuously stirring at room temperature to dissolve the sodium dodecyl sulfate and the sodium polycarboxylate, and continuously stirring for 2 hours to obtain a curing agent stock solution;
step 2, adjusting the pH of the stock solution: adding 1.2 parts of calcium hydroxide into the curing agent stock solution obtained in the step 1 to adjust the pH value of the solution system to 7, adjusting the pH value, heating the solution to 50 ℃, and continuously stirring for more than 2 hours to obtain the curing agent stock solution with the system pH value of 7;
step 3, preparing a soil stabilizer: and (3) sequentially adding 1 part of lithium hydroxide and 3.8 parts of aluminum silicate into the pH-adjusted curing agent stock solution obtained in the step (2), keeping the heating temperature at 50 ℃, continuously stirring for more than 4 hours, and cooling the stirred solution to room temperature to obtain a mixture, wherein the obtained mixture is the target soil curing agent.
The embodiment also provides a bio-based high water resistance liquid soil curing agent prepared by the preparation method.
Example 5:
the embodiment provides a preparation method of a bio-based high water resistance liquid soil curing agent, which comprises the following specific steps:
1. raw materials
Sodium carboxymethylcellulose, glycerol, fatty acid methyl ester, sodium p-dodecyl sulfonate, sodium polycarboxylate, lithium hydroxide, calcium hydroxide, aluminum silicate and distilled water.
2. Preparation procedure
Step 1, preparing a curing agent stock solution: adding 13 parts of sodium carboxymethylcellulose, 4 parts of glycerol, 6 parts of fatty acid, 18 parts of fatty acid methyl ester, 10 parts of sodium dodecyl sulfate and 3 parts of sodium polycarboxylate into 40 parts of distilled water according to the mass ratio, continuously stirring at room temperature to dissolve the sodium dodecyl sulfate and the sodium polycarboxylate, and continuously stirring for 2 hours to obtain a curing agent stock solution;
step 2, adjusting the pH of the stock solution: adding 1.2 parts of calcium hydroxide into the curing agent stock solution obtained in the step 1 to adjust the pH value of the solution system to 7, adjusting the pH value, heating the solution to 50 ℃, and continuously stirring for more than 2 hours to obtain the curing agent stock solution with the system pH value of 7;
step 3, preparing a soil stabilizer: and (3) sequentially adding 1.8 parts of lithium hydroxide and 3 parts of aluminum silicate into the pH-adjusted curing agent stock solution obtained in the step (2), keeping the heating temperature at 50 ℃, continuously stirring for more than 4 hours, and cooling the stirred solution to room temperature to obtain a mixture, wherein the obtained mixture is the target soil curing agent.
The embodiment also provides a bio-based high water resistance liquid soil curing agent prepared by the preparation method.
According to the preparation methods in the embodiments 1 to 5, the fresh bio-based high water resistance liquid soil stabilizer is prepared respectively, and the performance test is carried out on the fresh soil stabilizer, wherein a blank control group is soil without soil stabilizer. The test method comprises the following steps: the clay is used as an aggregate, 3% of lime and 3% of cement are added into the clay as auxiliary materials, 0.05% of soil curing agent is added into the corresponding aggregates respectively, the 7-day water immersion and water absorption of the curing agent on the soil are tested according to the industry standard CJJ/T286-2018, and the test results are shown in Table 1.
TABLE 1-Cure Performance test results of soil stabilizer prepared in examples 1 to 5
| Type of curing agent | Example 1 | Example 2 | Example 3 | Example 4 | Example 5 | Blank control group |
| Absorption rate after soaking in water for 7 days | 1.21％ | 1.33％ | 1.36％ | 1.42％ | 1.44％ | 1.70％ |
As can be seen from the above table, when the soil solidifying agents prepared by the preparation methods in examples 1 to 5 are detected according to performance test standards, the soil solidifying agents prepared in examples 1 to 5 can all obtain a 7-day soaking absorption rate lower than 1.5%, the soil solidifying agent prepared in example 1 can obtain a 7-day soaking water absorption rate of 1.21%, and the performance of the soil solidifying agent in the same conditions is superior to the 7-day soaking water absorption rate of the soil solidifying agent reported in the existing patent documents, and the performance test results in table 1 show that the soil solidifying agent prepared in the invention has an excellent water resistance, and the water absorption rate of the soil solidifying agent is as high as 1.70% when the solidifying agent is not solidified.
According to the results in table 1, the soil stabilizer prepared freshly in the preferred embodiment 1 is tested for performance, and the test method is as follows: respectively taking clay, silt and sandy soil as aggregates, adding 3% of lime and 3% of cement as auxiliary materials into each aggregate, respectively adding 0.05% of curing agent into the aggregates, and testing the 7-day unconfined compressive strength and the water absorption rate of the soil after the curing agent is added according to the industrial standard CJJ/T286-2018, wherein the test results are shown in Table 2.
Table 2-results of tests on the soil curing agent prepared in example 5 for the curing properties of various soils
| Class of soil | Clay | Sub-silt | Silt soil |
| Unconfined compressive strength of 7 days | 5.70MPa | 4.31MPa | 3.75MPa |
| Water absorption after 7 days of soaking | 1.21％ | 0.51％ | 1.56％ |
From the perspective of green and environmental protection, the strength of the current curing agent is not ideal enough, and under the same conditions reported in the prior patent documents, the 7-day unconfined compressive strength of the soil curing agent added with cement and quicklime in the same proportion is generally 1.8-2.5 MPa. As can be seen from table 2, the soil stabilizer prepared in example 1 of the present invention shows different physical and chemical properties for different types of soil, but all of them are better than the 7-day unconfined compressive strength of the soil to which the soil stabilizer reported in the prior patent literature is added, and the 7-day unconfined compressive strength value of the clay to which the soil stabilizer prepared in example 5 is added is as high as 5.70 MPa. The water absorption of the subsoil after 7 days soaking with the soil stabilizer is only 0.51%, which shows that the soil stabilizer prepared in example 1 has very strong water resistance to the subsoil. The soil curing agent formed by compounding the organic matters and the inorganic matters has physical and chemical effects on soil, so that the strength and water resistance of the soil are improved, and different performances of the soil curing agent can be shown due to different soil properties and different reaction processes with the soil curing agent.
The above is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, several modifications and variations can be made without departing from the technical principle of the present invention, and these modifications and variations should also be regarded as the protection scope of the present invention.
Claims (8)
1. The liquid soil curing agent for improving the water resistance is characterized by comprising the following components in percentage by mass:
6-16 parts of water-soluble biomass cellulose and organic biomass, wherein the water-soluble cellulose comprises sodium carboxymethyl cellulose, hydroxypropyl methyl cellulose, lignocellulose and alginate fiber;
the organic biomass comprises 5-8 parts of glycerol and fatty acid derivatives, 4-10 parts of fatty acid and 12-20 parts of fatty acid derivatives;
the biological base and derivatives thereof comprise sodium dodecyl sulfate and sodium polycarboxylate, wherein 5-12 parts of sodium dodecyl sulfate is used; 2-8 parts of sodium polycarboxylate;
also included are inorganic materials, including, in particular, lithiates, calcides, and phosphoaluminates, wherein,
0.4-3 parts of lithium compound, 1.2-1.5 parts of calcium compound and 2-5 parts of phosphorus aluminide;
38 parts of solvent, wherein the solvent is pure water.
2. The liquid soil stabilizer for improving water resistance of claim 1, wherein the bio-based material and the derivative thereof are natural biomass and the derivative thereof.
3. The liquid soil stabilizer for improving water resistance of claim 1, wherein the sodium p-dodecylsulfate is prepared by chemically and catalytically converting biomass higher fatty acid, and the sodium polycarboxylate is prepared by catalytically converting glycerol.
4. The liquid soil stabilizer for improving water resistance according to claim 1, wherein the fatty acid derivative is a fatty acid ester.
5. The liquid soil stabilizer for improving water resistance according to claim 1, wherein the lithiated compound is lithium hydroxide, the calcified compound is calcium hydroxide, and the phosphorus aluminide is aluminum silicate.
6. A preparation method of a liquid soil curing agent for improving water resistance is characterized by comprising the following steps:
step 1, preparing a curing agent stock solution: adding water-soluble cellulose, glycerol, fatty acid methyl ester, sodium dodecyl sulfate and sodium polycarboxylate into 40 parts of distilled water, continuously stirring at room temperature to dissolve the water-soluble cellulose, the glycerol, the fatty acid methyl ester, the sodium dodecyl sulfate and the sodium polycarboxylate, and continuously stirring for 2 hours to obtain a curing agent stock solution;
step 2, adjusting the pH of the stock solution: adding the curing agent stock solution obtained in the step 1 into a calcification adjusting solution system, heating the solution after adjusting the pH, and continuously stirring for more than 2 hours to obtain the curing agent stock solution after adjusting the pH;
step 3, preparing a soil stabilizer: and (3) sequentially adding a lithium compound and a phosphorus aluminide into the pH-adjusted curing agent stock solution obtained in the step (2), keeping the heating temperature unchanged, continuously stirring for more than 4 hours, and cooling the stirred solution to room temperature to obtain a mixture, wherein the obtained mixture is the target soil curing agent.
7. The method for preparing a liquid soil stabilizer for improving water resistance according to claim 6, wherein the pH value of the solution system in the step 2 is adjusted within a range of 6.5-8.
8. The method for preparing a liquid soil stabilizer for improving water resistance according to claim 6, wherein the heating temperature of the raw liquid of the stabilizer in the steps 2 and 3 is 45-70 ℃.
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| CN115197709A (en) * | 2022-06-27 | 2022-10-18 | 寿光市润达新型建材有限公司 | Soil stabilizer with heavy metal stabilizing effect and preparation method and application thereof |
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