CN111620529B - Curing agent for sludge road and preparation method thereof - Google Patents
Curing agent for sludge road and preparation method thereof Download PDFInfo
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- CN111620529B CN111620529B CN202010505487.4A CN202010505487A CN111620529B CN 111620529 B CN111620529 B CN 111620529B CN 202010505487 A CN202010505487 A CN 202010505487A CN 111620529 B CN111620529 B CN 111620529B
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F11/00—Treatment of sludge; Devices therefor
- C02F11/008—Sludge treatment by fixation or solidification
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F11/00—Treatment of sludge; Devices therefor
- C02F11/12—Treatment of sludge; Devices therefor by de-watering, drying or thickening
- C02F11/14—Treatment of sludge; Devices therefor by de-watering, drying or thickening with addition of chemical agents
- C02F11/143—Treatment of sludge; Devices therefor by de-watering, drying or thickening with addition of chemical agents using inorganic substances
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F11/00—Treatment of sludge; Devices therefor
- C02F11/12—Treatment of sludge; Devices therefor by de-watering, drying or thickening
- C02F11/14—Treatment of sludge; Devices therefor by de-watering, drying or thickening with addition of chemical agents
- C02F11/143—Treatment of sludge; Devices therefor by de-watering, drying or thickening with addition of chemical agents using inorganic substances
- C02F11/145—Treatment of sludge; Devices therefor by de-watering, drying or thickening with addition of chemical agents using inorganic substances using calcium compounds
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W30/00—Technologies for solid waste management
- Y02W30/50—Reuse, recycling or recovery technologies
- Y02W30/91—Use of waste materials as fillers for mortars or concrete
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- Hydrology & Water Resources (AREA)
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- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Organic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Soil Conditioners And Soil-Stabilizing Materials (AREA)
- Treatment Of Sludge (AREA)
Abstract
The application belongs to the technical field of road engineering, and particularly relates to a curing agent for a sludge road and a preparation method thereof. The application provides a curing agent for sludge road, includes: a boron fluoride compound, dichloromaleic anhydride, glycerol trimellitic anhydride, dodecyl maleic anhydride, benzophenone tetracarboxyl anhydride, endomethyltetrahydrophthalic anhydride, a first mixture, a second mixture and a water absorbent; the first mixture contains diaminodiphenylmethane and isophoronediamine; the second mixture contains o-toluenediamine, m-toluenediamine, and diaminodiphenylmethane. The curing agent can effectively cure the sludge, and each index of the obtained cured soil meets the requirement of roadbed filling, and is used for solving the technical defects that the conventional sludge curing agent has low strength of the cured soil after the sludge is cured and is difficult to meet the requirement of the roadbed filling.
Description
Technical Field
The application belongs to the technical field of road engineering, and particularly relates to a curing agent for a sludge road and a preparation method thereof.
Background
The road is used as a main traffic carrier for vehicle operation and mainly comprises a roadbed, a base layer, a surface layer and other main parts. In the structural composition of roads, roadbeds are used as important basic structural layers, and have key influences on the service performance and the service life of the roads. In the process of filling and constructing a soil foundation, the selection of the roadbed filler has very important significance, and the highway construction scale in China is very large every year, so that a large amount of soil meeting the performance requirement of the roadbed filler is needed. However, although China has wide land resources, with economic development, natural resources are more and more consumed, and soil resources are less and less.
Sludge is soft soil with natural water content greater than the fluidity limit and porosity greater than 1.5. Is a modern sediment formed under the condition that microorganisms participate in the slow water flow in the gulf, lake or river. Rich in organic substances, grey black, low mechanical strength and high compressibility. Along with the rapid development of the economy of China, the scale of urban construction is continuously enlarged, and the treatment requirements of rivers, lake dredging sludge and living sludge related to the urban construction are increasingly increased. The amount of dredging sludge of national lakes and rivers is at least 7000 million tons per year, and the annual sludge yield of China reaches one hundred million tons with the addition of urban underground water channels. The sludge has the characteristics of high water content, low strength, strong compressibility and the like, is difficult to be directly used in engineering filling, and not only wastes land but also causes huge pollution to the environment when being directly abandoned by oceans or piled in the open air. Therefore, how to rapidly solidify the sludge to make it an available soil resource with certain bearing capacity and stability becomes very urgent. However, the conventional sludge curing agent tends to cause the strength of the sludge after curing to be low, and particularly the early strength is not easily improved.
In conclusion, the traditional sludge curing agent has the technical defects that the strength of the cured soil after sludge curing is low and the requirement of roadbed filling is difficult to meet.
Disclosure of Invention
In view of this, the application provides a curing agent for a sludge road and a preparation method thereof, the curing agent can effectively cure sludge, and various indexes of the obtained cured soil meet the requirement of roadbed filling, and the curing agent is used for solving the technical defects that the cured soil after the sludge is cured is low in strength and difficult to meet the requirement of the roadbed filling in the traditional sludge curing agent.
The application provides in a first aspect a curing agent for a sludge road, comprising:
a boron fluoride compound, dichloromaleic anhydride, glycerol trimellitic anhydride, dodecyl maleic anhydride, benzophenone tetracarboxyl anhydride, endomethyltetrahydrophthalic anhydride, a first mixture, a second mixture and a water absorbent;
the first mixture contains diaminodiphenylmethane and isophoronediamine;
the second mixture contains o-toluenediamine, m-toluenediamine, and diaminodiphenylmethane.
In the present application, diaminodiphenylmethane is added in two portions, a first portion of diaminodiphenylmethane is mixed with isophoronediamine to form a first mixture, and a second portion of diaminodiphenylmethane is mixed with o-tolylenediamine and m-tolylenediamine to form a second mixture.
Preferably, the boron trifluoride compound is selected from boron trifluoride ethylaniline and/or boron trifluoride pyridine.
Preferably, the diaminodiphenylmethane accounts for 30-40 wt% of the first mixture, and the isophorone diamine accounts for 60-70 wt% of the first mixture.
Preferably, in the second mixture, the weight ratio of the o-toluenediamine, the m-toluenediamine, and the diaminodiphenylmethane is (22-28): (7-13): (62-68).
Preferably, the weight ratio of the o-toluenediamine, the m-toluenediamine, and the diaminodiphenylmethane in the second mixture is 25:10: 65.
Preferably, the water absorbing agent is selected from one or more of quicklime, anhydrous calcium chloride, magnesium carbide, magnesium oxide and silicon dioxide.
Wherein, magnesium carbide plays the dehydration effect in the water-absorbing agent disclosed in the application, and the principle is similar to calcium carbide, but the dehydration degree is more violent than calcium carbide, and the reaction is faster. At present, the soil is used less.
Preferably, the water absorbing agent includes, in parts by weight:
preferably, the composition comprises the following components in parts by weight:
preferably, the composition comprises the following components in parts by weight:
the second aspect of the application provides a preparation method of a curing agent for a sludge road, which comprises the following steps:
step 1, mixing a water absorbent, a fluorine boron compound, dichloromaleic anhydride, glycerol trimellitic anhydride, dodecyl maleic anhydride, benzophenone tetracarboxylic anhydride and endomethyltetrahydrophthalic anhydride to prepare a mixture 1; wherein the water absorbent is a powdery water absorbent;
step 2, mixing the first mixture, the second mixture and the mixture 1 to prepare a curing agent for the sludge road;
the first mixture contains diaminodiphenylmethane and isophoronediamine;
the second mixture contains o-toluenediamine, m-toluenediamine, and diaminodiphenylmethane.
Preferably, the water absorbing agent has a particle size of 300 to 500 mesh.
Preferably, the water absorbing agent has a particle size of 400 mesh.
Preferably, the mixing of step 1 and step 2 should not be less than 20 minutes per mixing time.
Preferably, the mixing in the step 1 and the step 2 is carried out at the temperature of 20-30 DEG C
Specifically, the glycerol trimellitic anhydride adopted by the application is modified on the basis of trimellitic anhydride, and the preparation method of the glycerol trimellitic anhydride is to perform dehydration esterification reaction on glycerol and trimellitic anhydride to obtain the glycerol trimellitic anhydride, so that the glycerol trimellitic anhydride has a better curing effect.
The purpose of this application is to prior art's silt curing agent has that the solidification soil intensity after the silt solidification is low, is difficult to satisfy the technical defect that the road bed filler required. Therefore, the boron fluoride compound, dichloromaleic anhydride, glycerol trimellitic anhydride, dodecyl maleic anhydride, benzophenone tetracarboxylic anhydride, endomethyltetrahydrophthalic anhydride, the first mixture and the second mixture of the curing agent for the sludge road are used as a cementing body, and the dehydrating agent of the curing agent for the sludge road dehydrates the sludge to change from high water content to low water content so as to form aggregate which can be cemented by the cementing body. The cementing body is attached to the surfaces of the sludge particles, so that the sludge particles are mutually cemented and then the strength of the solidified soil is enhanced.
To sum up, the curing agent for the sludge road, which is provided by the application, can cure and improve the sludge, so that the curing agent has the performance of meeting the requirements of roadbed materials. The method can relieve the contradiction of shortage of natural materials, is helpful for solving the sludge treatment problem in China, and has profound social significance and environmental protection significance.
Detailed Description
The application provides a curing agent for a sludge road and a preparation method thereof, which are used for solving the technical defects that the traditional sludge curing agent has low strength of cured soil after sludge curing and is difficult to meet the requirement of roadbed filling.
The technical solutions in the embodiments of the present application will be described clearly and completely below, and it should be understood that the described embodiments are only a part of the embodiments of the present application, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.
The raw materials used in the following examples are all commercially available or self-made.
Further, the application discloses a curing agent for a sludge road, which is prepared from the following raw materials: boron trifluoride ethylaniline, boron trifluoride pyridine, dichloromaleic anhydride, glycerol trimellitic anhydride, dodecylmaleic anhydride, benzophenone tetracarboxylic anhydride, endomethylenetetrahydrophthalic anhydride, a mixture of diaminodiphenylmethane and isophoronediamine, o-toluenediamine, a mixture of m-toluenediamine and diaminodiphenylmethane, quick lime, anhydrous calcium chloride, magnesium carbide, magnesium oxide and silicon dioxide.
Further, the weight ratio of the raw materials is as follows: 3-6 parts of boron trifluoride ethyl aniline, 2-5 parts of boron trifluoride pyridine, 10-13 parts of dichloromaleic anhydride, 10-13 parts of glycerol trimellitic anhydride, 8-11 parts of dodecyl maleic anhydride, 7-10 parts of benzophenone tetracarboxylic anhydride, 5-8 parts of endomethyltetrahydrophthalic anhydride, 5-8 parts of a mixture of diaminodiphenylmethane and isophoronediamine, 10-13 parts of a mixture of o-toluenediamine, m-toluenediamine and diaminodiphenylmethane, 10-13 parts of quicklime, 10-13 parts of anhydrous calcium chloride, 5-6 parts of magnesium carbide, 10-15 parts of magnesium oxide and 5-8 parts of silicon dioxide.
The preparation method of the glycerol trimellitic anhydride comprises the step of carrying out dehydration esterification reaction on glycerol and three trimellitic anhydrides to obtain the glycerol trimellitic anhydride.
Example 1
The embodiment of the application provides a first curing agent for a sludge road, and the preparation method comprises the following steps:
respectively grinding quicklime, anhydrous calcium chloride, magnesium carbide, magnesium oxide and silicon dioxide into powder particles of 400 meshes;
uniformly stirring and mixing 10 parts by weight of powdered quick lime, 10 parts by weight of anhydrous calcium chloride, 5 parts by weight of magnesium carbide, 10 parts by weight of magnesium oxide, 5 parts by weight of silicon dioxide, 3 parts by weight of boron trifluoride ethyl aniline, 2 parts by weight of boron trifluoride pyridine, 10 parts by weight of dichloromaleic anhydride, 10 parts by weight of glycerol trimellitic anhydride, 8 parts by weight of dodecylmaleic anhydride, 7 parts by weight of benzophenone tetracarboxyl anhydride and 5 parts by weight of endomethenyltetrahydrophthalic anhydride for 20 minutes for later use, wherein the mixing and stirring temperature is 20 ℃;
mixing diaminodiphenylmethane and isophorone diamine for 20 minutes for later use to prepare a first mixture, wherein the mixing and stirring temperature is 20 ℃, the diaminodiphenylmethane accounts for 30% of the first mixture, and the isophorone diamine accounts for 70% of the first mixture; mixing o-toluenediamine, m-toluenediamine and diaminodiphenylmethane for 20 minutes for later use to prepare a second mixture, wherein the mixing and stirring temperature is 20 ℃, and the mixing and stirring temperature is as follows: m-toluenediamine: the weight ratio of the diaminodiphenylmethane is 25:10: 65;
adding 5 parts by weight of the first mixture and 10 parts by weight of the second mixture into the stirred mixture of quick lime, anhydrous calcium chloride, magnesium carbide, magnesium oxide, silicon dioxide, boron trifluoride ethylaniline, boron trifluoride pyridine, dichloromaleic anhydride, glycerol trimellitic anhydride, dodecylmaleic anhydride, benzophenone tetracarboxylic anhydride and endomethyltetrahydrophthalic anhydride, stirring for 20 minutes at the temperature of 20 ℃, and obtaining the curing agent for the sludge in the embodiment after stirring.
The curing agent for the sludge road of the embodiment is mixed into sludge (the sludge is dredged sludge, and the original water content is tested to be 125%) according to the weight ratio of 8%, and the sludge curing soil is obtained by uniform mixing.
The silt solidified soil of the present example was subjected to mechanical tests such as liquid plastic limit test, CBR test, unconfined compressive strength test, and the like, and the results are shown in table 1.
Example 2
The embodiment of the application provides a second curing agent for a sludge road, and the preparation method comprises the following steps:
respectively grinding quicklime, anhydrous calcium chloride, magnesium carbide, magnesium oxide and silicon dioxide into powder particles of 400 meshes;
uniformly stirring and mixing 12 parts by weight of powdered quick lime, 12 parts by weight of anhydrous calcium chloride, 5 parts by weight of magnesium carbide, 13 parts by weight of magnesium oxide, 6 parts by weight of silicon dioxide, 4 parts by weight of boron trifluoride ethyl aniline, 3 parts by weight of boron trifluoride pyridine, 11 parts by weight of dichloromaleic anhydride, 12 parts by weight of glycerol trimellitic anhydride, 8 parts by weight of dodecylmaleic anhydride, 8 parts by weight of benzophenone tetracarboxyl anhydride and 6 parts by weight of endomethenyltetrahydrophthalic anhydride for 25 minutes for later use, wherein the mixing and stirring temperature is 25 ℃;
mixing diaminodiphenylmethane and isophorone diamine for 25 minutes for later use to prepare a first mixture, wherein the mixing and stirring temperature is 25 ℃, the diaminodiphenylmethane accounts for 40% of the first mixture, and the isophorone diamine accounts for 60% of the first mixture; mixing o-toluenediamine, m-toluenediamine and diaminodiphenylmethane for 25 minutes for later use to prepare a second mixture, wherein the mixing and stirring temperature is 25 ℃, and the mixing and stirring temperature is as follows: m-toluenediamine: the weight ratio of the diaminodiphenylmethane is 25:10: 65;
adding 7 parts by weight of the first mixture and 11 parts by weight of the second mixture into the stirred mixture of quick lime, anhydrous calcium chloride, magnesium carbide, magnesium oxide, silicon dioxide, boron trifluoride ethylaniline, boron trifluoride pyridine, dichloromaleic anhydride, glycerol trimellitic anhydride, dodecylmaleic anhydride, benzophenone tetracarboxylic anhydride and endomethyltetrahydrophthalic anhydride, stirring for 25 minutes at the temperature of 25 ℃, and obtaining the curing agent for the sludge in the embodiment after stirring.
The curing agent for the sludge road in the embodiment is mixed into the sludge (the sludge is dredging sludge, and the original water content is tested to be 125%) according to the weight ratio of 8%, and the sludge curing soil is obtained by uniformly mixing.
The silt solidified soil of the present example was subjected to mechanical tests such as liquid plastic limit test, CBR test, unconfined compressive strength test, and the like, and the results are shown in table 1.
Example 3
The embodiment of the application provides a third curing agent for a sludge road, and the preparation method comprises the following steps:
respectively grinding quicklime, anhydrous calcium chloride, magnesium carbide, magnesium oxide and silicon dioxide into powder particles of 400 meshes;
uniformly stirring and mixing 12 parts by weight of powdered quick lime, 13 parts by weight of anhydrous calcium chloride, 6 parts by weight of magnesium carbide, 15 parts by weight of magnesium oxide, 7 parts by weight of silicon dioxide, 5 parts by weight of boron trifluoride ethyl aniline, 4 parts by weight of boron trifluoride pyridine, 12 parts by weight of dichloromaleic anhydride, 12 parts by weight of glycerol trimellitic anhydride, 9 parts by weight of dodecyl maleic anhydride, 9 parts by weight of benzophenone tetracarboxyl anhydride and 7 parts by weight of endomethenyltetrahydrophthalic anhydride for 25 minutes for later use, wherein the mixing and stirring temperature is 30 ℃;
mixing diaminodiphenylmethane and isophorone diamine for 25 minutes for later use to prepare a first mixture, wherein the mixing and stirring temperature is 30 ℃, the diaminodiphenylmethane accounts for 30% of the first mixture, and the isophorone diamine accounts for 70% of the first mixture; mixing o-toluenediamine, m-toluenediamine and diaminodiphenylmethane for 25 minutes for later use to prepare a second mixture, wherein the mixing and stirring temperature is 30 ℃, and the molar ratio of o-toluenediamine: m-toluenediamine: the weight ratio of the diaminodiphenylmethane is 25:10: 65;
adding 8 parts by weight of the first mixture and 12 parts by weight of the second mixture into a stirred mixture of quick lime, anhydrous calcium chloride, magnesium carbide, magnesium oxide, silicon dioxide, boron trifluoride ethylaniline, boron trifluoride pyridine, dichloromaleic anhydride, glycerol trimellitic anhydride, dodecylmaleic anhydride, benzophenone tetracarboxylic anhydride and endomethyltetrahydrophthalic anhydride, stirring for 25 minutes at the temperature of 30 ℃, and obtaining the curing agent for the sludge in the embodiment after stirring.
The curing agent for the sludge road in the embodiment is mixed into the sludge (the sludge is dredging sludge, and the original water content is tested to be 125%) according to the weight ratio of 8%, and the sludge curing soil is obtained by uniformly mixing.
The silt solidified soil of the present example was subjected to mechanical tests such as liquid plastic limit test, CBR test, unconfined compressive strength test, and the like, and the results are shown in table 1.
Example 4
The embodiment of the application provides a fourth curing agent for a sludge road, and the preparation method comprises the following steps:
respectively grinding quicklime, anhydrous calcium chloride, magnesium carbide, magnesium oxide and silicon dioxide into powder particles of 400 meshes;
uniformly stirring and mixing 11 parts by weight of powdered quick lime, 11 parts by weight of anhydrous calcium chloride, 6 parts by weight of magnesium carbide, 11 parts by weight of magnesium oxide, 8 parts by weight of silicon dioxide, 6 parts by weight of boron trifluoride ethyl aniline, 5 parts by weight of boron trifluoride pyridine, 13 parts by weight of dichloromaleic anhydride, 11 parts by weight of glycerol trimellitic anhydride, 10 parts by weight of dodecylmaleic anhydride, 10 parts by weight of benzophenone tetracarboxyl anhydride and 8 parts by weight of endomethenyltetrahydrophthalic anhydride for 25 minutes for later use, wherein the mixing and stirring temperature is 30 ℃;
mixing diaminodiphenylmethane and isophorone diamine for 25 minutes for later use to prepare a first mixture, wherein the mixing and stirring temperature is 30 ℃, the diaminodiphenylmethane accounts for 40% of the first mixture, and the isophorone diamine accounts for 60% of the first mixture; mixing o-toluenediamine, m-toluenediamine and diaminodiphenylmethane for 25 minutes for later use to prepare a second mixture, wherein the mixing and stirring temperature is 30 ℃, and the molar ratio of o-toluenediamine: m-toluenediamine: the weight ratio of the diaminodiphenylmethane is 25:10: 65;
adding 6 parts by weight of the first mixture and 13 parts by weight of the second mixture into the stirred mixture of quick lime, anhydrous calcium chloride, magnesium carbide, magnesium oxide, silicon dioxide, boron trifluoride ethylaniline, boron trifluoride pyridine, dichloromaleic anhydride, glycerol trimellitic anhydride, dodecylmaleic anhydride, benzophenone tetracarboxylic anhydride and endomethyltetrahydrophthalic anhydride, stirring for 25 minutes at the temperature of 30 ℃, and obtaining the curing agent for the sludge in the embodiment after stirring.
The curing agent for the sludge road of the embodiment is mixed into sludge (the sludge is dredged sludge, and the original water content is tested to be 125%) according to the weight ratio of 8%, and the sludge curing soil is obtained by uniform mixing.
The silt solidified soil of the present example was subjected to mechanical tests such as liquid plastic limit test, CBR test, unconfined compressive strength test, and the like, and the results are shown in table 1.
Example 5
The embodiment of the application provides a fifth curing agent for a sludge road, and the preparation method comprises the following steps:
respectively grinding quicklime, anhydrous calcium chloride, magnesium carbide, magnesium oxide and silicon dioxide into powder particles of 400 meshes;
uniformly stirring and mixing 13 parts by weight of powdered quick lime, 10 parts by weight of anhydrous calcium chloride, 5 parts by weight of magnesium carbide, 12 parts by weight of magnesium oxide, 5 parts by weight of silicon dioxide, 3 parts by weight of boron trifluoride ethyl aniline, 5 parts by weight of boron trifluoride pyridine, 10 parts by weight of dichloromaleic anhydride, 13 parts by weight of glycerol trimellitic anhydride, 11 parts by weight of dodecyl maleic anhydride, 7 parts by weight of benzophenone tetracarboxyl anhydride and 5 parts by weight of endomethenyltetrahydrophthalic anhydride for 25 minutes for later use, wherein the mixing and stirring temperature is 30 ℃;
mixing diaminodiphenylmethane and isophorone diamine for 25 minutes for later use to prepare a first mixture, wherein the mixing and stirring temperature is 30 ℃, the diaminodiphenylmethane accounts for 30% of the first mixture, and the isophorone diamine accounts for 70% of the first mixture; mixing o-toluenediamine, m-toluenediamine and diaminodiphenylmethane for 25 minutes for later use to prepare a second mixture, wherein the mixing and stirring temperature is 30 ℃, and the molar ratio of o-toluenediamine: m-toluenediamine: the weight ratio of the diaminodiphenylmethane is 25:10: 65;
adding 5 parts by weight of the first mixture and 10 parts by weight of the second mixture into the stirred mixture of quick lime, anhydrous calcium chloride, magnesium carbide, magnesium oxide, silicon dioxide, boron trifluoride ethylaniline, boron trifluoride pyridine, dichloromaleic anhydride, glycerol trimellitic anhydride, dodecylmaleic anhydride, benzophenone tetracarboxylic anhydride and endomethyltetrahydrophthalic anhydride, stirring for 25 minutes at the temperature of 30 ℃, and obtaining the curing agent for the sludge in the embodiment after stirring.
The curing agent for the sludge road in the embodiment is mixed into the sludge (the sludge is dredging sludge, and the original water content is tested to be 125%) according to the weight ratio of 8%, and the sludge curing soil is obtained by uniformly mixing.
The silt solidified soil of the present example was subjected to mechanical tests such as liquid plastic limit test, CBR test, unconfined compressive strength test, and the like, and the results are shown in table 1.
Example 6
The embodiment of the application provides a sixth curing agent for a sludge road, and the preparation method comprises the following steps:
respectively grinding quicklime, anhydrous calcium chloride, magnesium carbide, magnesium oxide and silicon dioxide into powder particles of 400 meshes;
uniformly stirring and mixing 12 parts by weight of powdered quick lime, 11 parts by weight of anhydrous calcium chloride, 5 parts by weight of magnesium carbide, 14 parts by weight of magnesium oxide, 6 parts by weight of silicon dioxide, 4 parts by weight of boron trifluoride ethyl aniline, 4 parts by weight of boron trifluoride pyridine, 11 parts by weight of dichloromaleic anhydride, 12 parts by weight of glycerol trimellitic anhydride, 9 parts by weight of dodecylmaleic anhydride, 8 parts by weight of benzophenone tetracarboxyl anhydride and 6 parts by weight of endomethenyltetrahydrophthalic anhydride for 25 minutes for later use, wherein the mixing and stirring temperature is 30 ℃;
mixing diaminodiphenylmethane and isophorone diamine for 25 minutes for later use to prepare a first mixture, wherein the mixing and stirring temperature is 30 ℃, the diaminodiphenylmethane accounts for 40% of the first mixture, and the isophorone diamine accounts for 60% of the first mixture; mixing o-toluenediamine, m-toluenediamine and diaminodiphenylmethane for 25 minutes for later use to prepare a second mixture, wherein the mixing and stirring temperature is 30 ℃, and the molar ratio of o-toluenediamine: m-toluenediamine: the weight ratio of the diaminodiphenylmethane is 25:10: 65;
adding 6 parts by weight of the first mixture and 11 parts by weight of the second mixture into the stirred mixture of quick lime, anhydrous calcium chloride, magnesium carbide, magnesium oxide, silicon dioxide, boron trifluoride ethylaniline, boron trifluoride pyridine, dichloromaleic anhydride, glycerol trimellitic anhydride, dodecylmaleic anhydride, benzophenone tetracarboxylic anhydride and endomethyltetrahydrophthalic anhydride, stirring for 25 minutes at the temperature of 30 ℃, and obtaining the curing agent for the sludge in the embodiment after stirring.
The curing agent for the sludge road in the embodiment is mixed into the sludge (the sludge is dredging sludge, and the original water content is tested to be 125%) according to the weight ratio of 8%, and the sludge curing soil is obtained by uniformly mixing.
The silt solidified soil of the present example was subjected to mechanical tests such as liquid plastic limit test, CBR test, unconfined compressive strength test, and the like, and the results are shown in table 1.
Example 7
The embodiment of the application provides a seventh curing agent for a sludge road, and the preparation method comprises the following steps:
respectively grinding quicklime, anhydrous calcium chloride, magnesium carbide, magnesium oxide and silicon dioxide into powder particles of 400 meshes;
uniformly stirring and mixing 11 parts by weight of powdered quick lime, 12 parts by weight of anhydrous calcium chloride, 6 parts by weight of magnesium carbide, 10 parts by weight of magnesium oxide, 7 parts by weight of silicon dioxide, 5 parts by weight of boron trifluoride ethyl aniline, 3 parts by weight of boron trifluoride pyridine, 12 parts by weight of dichloromaleic anhydride, 11 parts by weight of glycerol trimellitic anhydride, 10 parts by weight of dodecylmaleic anhydride, 9 parts by weight of benzophenone tetracarboxyl anhydride and 7 parts by weight of endomethenyltetrahydrophthalic anhydride for 25 minutes for later use, wherein the mixing and stirring temperature is 30 ℃;
mixing diaminodiphenylmethane and isophorone diamine for 25 minutes for later use to prepare a first mixture, wherein the mixing and stirring temperature is 30 ℃, diaminodiphenylmethane accounts for 30% of the first mixture, and isophorone diamine accounts for 70% of the first mixture; mixing o-toluenediamine, m-toluenediamine and diaminodiphenylmethane for 25 minutes for later use to prepare a second mixture, wherein the mixing and stirring temperature is 30 ℃, and the molar ratio of o-toluenediamine: m-toluenediamine: the weight ratio of the diaminodiphenylmethane is 25:10: 65;
adding 7 parts by weight of the first mixture and 12 parts by weight of the second mixture into the stirred mixture of quick lime, anhydrous calcium chloride, magnesium carbide, magnesium oxide, silicon dioxide, boron trifluoride ethylaniline, boron trifluoride pyridine, dichloromaleic anhydride, glycerol trimellitic anhydride, dodecylmaleic anhydride, benzophenone tetracarboxylic anhydride and endomethyltetrahydrophthalic anhydride, stirring for 25 minutes at the temperature of 30 ℃, and obtaining the curing agent for the sludge in the embodiment after stirring.
The curing agent for the sludge road in the embodiment is mixed into the sludge (the sludge is dredging sludge, and the original water content is tested to be 130%) according to the weight ratio of 8%, and the sludge curing soil is obtained by uniform mixing.
The silt solidified soil of the present example was subjected to mechanical tests such as liquid plastic limit test, CBR test, unconfined compressive strength test, and the like, and the results are shown in table 1.
Example 8
The embodiment of the application provides an eighth curing agent for a sludge road, and the preparation method comprises the following steps:
respectively grinding quicklime, anhydrous calcium chloride, magnesium carbide, magnesium oxide and silicon dioxide into powder particles of 400 meshes;
uniformly stirring and mixing 10 parts by weight of powdered quick lime, 13 parts by weight of anhydrous calcium chloride, 6 parts by weight of magnesium carbide, 15 parts by weight of magnesium oxide, 8 parts by weight of silicon dioxide, 6 parts by weight of boron trifluoride ethyl aniline, 2 parts by weight of boron trifluoride pyridine, 13 parts by weight of dichloromaleic anhydride, 10 parts by weight of glycerol trimellitic anhydride, 11 parts by weight of dodecyl maleic anhydride, 10 parts by weight of benzophenone tetracarboxyl anhydride and 8 parts by weight of endomethenyl tetrahydrophthalic anhydride for 25 minutes for later use, wherein the mixing and stirring temperature is 30 ℃;
mixing diaminodiphenylmethane and isophorone diamine for 25 minutes for later use to prepare a first mixture, wherein the mixing and stirring temperature is 30 ℃, the diaminodiphenylmethane accounts for 40% of the first mixture, and the isophorone diamine accounts for 60% of the first mixture; mixing o-toluenediamine, m-toluenediamine and diaminodiphenylmethane for 25 minutes for later use to prepare a second mixture, wherein the mixing and stirring temperature is 30 ℃, and the molar ratio of o-toluenediamine: m-toluenediamine: the weight ratio of the diaminodiphenylmethane is 25:10: 65;
adding 8 parts by weight of the first mixture and 13 parts by weight of the second mixture into a stirred mixture of quick lime, anhydrous calcium chloride, magnesium carbide, magnesium oxide, silicon dioxide, boron trifluoride ethylaniline, boron trifluoride pyridine, dichloromaleic anhydride, glycerol trimellitic anhydride, dodecylmaleic anhydride, benzophenone tetracarboxylic anhydride and endomethyltetrahydrophthalic anhydride, stirring for 25 minutes at the temperature of 30 ℃, and obtaining the curing agent for the sludge in the embodiment after stirring.
The curing agent for the sludge road in the embodiment is mixed into the sludge (the sludge is dredging sludge, and the original water content is tested to be 125%) according to the weight ratio of 8%, and the sludge curing soil is obtained by uniformly mixing.
The silt solidified soil of the present example was subjected to mechanical tests such as liquid plastic limit test, CBR test, unconfined compressive strength test, and the like, and the results are shown in table 1.
Comparative example 1
The comparative example of the application provides a curing agent comparison product for a sludge road, and the preparation method is similar to that of the examples 1-8, except that boron trifluoride ethyl aniline, boron trifluoride pyridine, dichloromaleic anhydride and glycerol trimellitic anhydride are not added in the comparative example, and the specific method is as follows:
respectively grinding quicklime, anhydrous calcium chloride, magnesium carbide, magnesium oxide and silicon dioxide into powder particles of 400 meshes;
uniformly stirring and mixing 12 parts by weight of powdered quick lime, 12 parts by weight of anhydrous calcium chloride, 5 parts by weight of magnesium carbide, 13 parts by weight of magnesium oxide, 6 parts by weight of silicon dioxide, 8 parts by weight of dodecylated maleic anhydride, 8 parts by weight of benzophenone tetracarboxyl dianhydride and 6 parts by weight of endomethyltetrahydrophthalic anhydride for 25 minutes for later use, wherein the mixing and stirring temperature is 25 ℃;
mixing diaminodiphenylmethane and isophorone diamine for 25 minutes for later use to prepare a first mixture, wherein the mixing and stirring temperature is 25 ℃, the diaminodiphenylmethane accounts for 30% of the first mixture, and the isophorone diamine accounts for 70% of the first mixture; mixing o-toluenediamine, m-toluenediamine and diaminodiphenylmethane for 25 minutes for later use to prepare a second mixture, wherein the mixing and stirring temperature is 25 ℃, and the mixing and stirring temperature is as follows: m-toluenediamine: the weight ratio of the diaminodiphenylmethane is 25:10: 65;
adding 7 parts by weight of the first mixture and 11 parts by weight of the second mixture into the stirred mixture of quick lime, anhydrous calcium chloride, magnesium carbide, magnesium oxide, silicon dioxide, dodecyl maleic anhydride, benzophenone tetracarboxylic anhydride and endomethyltetrahydrophthalic anhydride, stirring for 25 minutes at the temperature of 25 ℃, and obtaining the comparative product of the curing agent for the sludge road of the comparative example after stirring.
The curing agent comparison product for the sludge road of the comparative example is mixed into sludge (the sludge is dredged sludge, and the original water content is tested to be 125%) according to the weight ratio of 8%, and the sludge and the curing agent are uniformly mixed to obtain the sludge curing soil.
Mechanical tests such as a liquid plastic limit test, a CBR test, an unconfined compressive strength test and the like are carried out on the silt solidified soil of the comparative example, and the results are shown in Table 1.
Comparative example 2
A comparative example of the present application provides a comparative product of a curing agent for a sludge road, which is prepared in a similar manner to examples 1 to 8 except that dodecylmaleic anhydride, benzophenone tetracarboxylic anhydride, endomethylenetetrahydrophthalic anhydride, first mixtures (the first mixtures are diaminodiphenylmethane and isophorone diamine), and second mixtures (the second mixtures are o-tolyldiamine, m-tolyldiamine, and diaminodiphenylmethane) are not added thereto, and the specific method is as follows:
respectively grinding quicklime, anhydrous calcium chloride, magnesium carbide, magnesium oxide and silicon dioxide into powder particles of 400 meshes;
uniformly stirring and mixing 12 parts by weight of powdered quick lime, 12 parts by weight of anhydrous calcium chloride, 5 parts by weight of magnesium carbide, 13 parts by weight of magnesium oxide, 6 parts by weight of silicon dioxide, 4 parts by weight of boron trifluoride ethyl aniline, 3 parts by weight of boron trifluoride pyridine, 11 parts by weight of dichloromaleic anhydride and 12 parts by weight of glycerol trimellitic anhydride for later use at the temperature of 25 ℃; and obtaining the comparative product of the curing agent for the sludge road of the comparative example after stirring.
The curing agent comparison product for the sludge road of the comparative example is mixed into sludge (the sludge is dredged sludge, and the original water content is tested to be 125%) according to the weight ratio of 8%, and the sludge and the curing agent are uniformly mixed to obtain the sludge curing soil.
Mechanical tests such as a liquid plastic limit test, a CBR test, an unconfined compressive strength test and the like are carried out on the silt solidified soil of the comparative example, and the results are shown in Table 1.
Comparative example 3
The comparative example of the application provides a firming agent comparative product for a sludge road, the preparation method is similar to that of the examples 1 to 8, and the difference is that the water absorbent of the comparative example uses silicon dioxide, calcium carbonate and calcium silicate, and the specific method is as follows:
respectively grinding silicon dioxide, calcium carbonate and calcium silicate into powder particles of 400 meshes;
uniformly stirring and mixing 15 parts by weight of silicon dioxide, 15 parts by weight of calcium carbonate, 17 parts by weight of calcium silicate, 4 parts by weight of boron trifluoride ethylaniline, 3 parts by weight of boron trifluoride pyridine, 11 parts by weight of dichloromaleic anhydride, 12 parts by weight of glycerol trimellitic anhydride, 8 parts by weight of dodecylmaleic anhydride, 8 parts by weight of benzophenone tetracarboxyl anhydride and 6 parts by weight of endomethylenetetrahydrophthalic anhydride for 25 minutes for later use, wherein the mixing and stirring temperature is 25 ℃;
mixing diaminodiphenylmethane and isophorone diamine for 25 minutes for later use to prepare a first mixture, wherein the mixing and stirring temperature is 25 ℃, the diaminodiphenylmethane accounts for 30% of the first mixture, and the isophorone diamine accounts for 70% of the first mixture; mixing o-toluenediamine, m-toluenediamine and diaminodiphenylmethane for 25 minutes for later use to prepare a second mixture, wherein the mixing and stirring temperature is 25 ℃, and the mixing and stirring temperature is as follows: m-toluenediamine: the weight ratio of the diaminodiphenylmethane is 25:10: 65;
and adding 7 parts by weight of the first mixture and 11 parts by weight of the second mixture into the stirred mixture of boron trifluoride ethylaniline, boron trifluoride pyridine, dichloromaleic anhydride, glycerol trimellitic anhydride, dodecyl maleic anhydride, benzophenone tetracarboxylic anhydride and endomethyltetrahydrophthalic anhydride, stirring for 25 minutes at the temperature of 25 ℃, and obtaining the comparative product of the curing agent for the sludge road in the comparative example after stirring.
The curing agent comparison product for the sludge road of the comparative example is mixed into sludge (the sludge is dredged sludge, and the original water content is tested to be 125%) according to the weight ratio of 8%, and the sludge and the curing agent are uniformly mixed to obtain the sludge curing soil.
Mechanical tests such as a liquid plastic limit test, a CBR test, an unconfined compressive strength test and the like are carried out on the silt solidified soil of the comparative example, and the results are shown in Table 1.
The results of the performance tests related to examples 1 to 8 and comparative examples 1 to 3 are shown in the following table 1.
TABLE 1
As can be seen from the analysis in Table 1, the curing agent curing system comprising boron trifluoride ethylaniline, boron trifluoride pyridine, dichloromaleic anhydride, glycerol trimellitic anhydride, dodecylmaleic anhydride, benzophenone tetracarboxyl dianhydride, endomethylenetetrahydrophthalic anhydride, a first mixture of diaminodiphenylmethane and isophoronediamine, and a second mixture of o-toluenediamine, m-toluenediamine and diaminodiphenylmethane has better curing effect than the curing agent system comprising dodecylmaleic anhydride, benzophenone tetracarboxyl dianhydride, endomethylenetetrahydrophthalic anhydride, diaminodiphenylmethane and isophoronediamine, and can improve the strength and CBR value of the sludge-cured soil, wherein the curing effect of the curing agent system comprising boron trifluoride ethylaniline, boron trifluoride pyridine, dichloromaleic anhydride and glycerol trimellitic anhydride is better than that of the curing agent system comprising dodecylmaleic anhydride, benzophenone tetracarboxyl dianhydride, endomethylenetetrahydrophthalic anhydride, diaminodiphenylmethane and isophoronediamine, The curing effect of the second mixture of o-toluenediamine, m-toluenediamine and diaminodiphenylmethane is poor; the water absorption system consisting of quicklime, anhydrous calcium chloride, magnesium carbide, magnesium oxide and silicon oxide has the effects of reducing the limit water content and reducing the plastic limit index.
Examples 1 to 8 used boron trifluoride ethylaniline, boron trifluoride pyridine, dichloromaleic anhydride, glycerol trimellitic anhydride, dodecylmaleic anhydride, benzophenone tetracarboxylic dianhydride, endomethyltetrahydrophthalic anhydride, a first mixture of diaminodiphenylmethane and isophorone diamine, and a second mixture of o-tolylenediamine, m-tolylenediamine and diaminodiphenylmethane, in combination with a water absorbent of quicklime, anhydrous calcium chloride, magnesium carbide, magnesium oxide and silica, effectively improved the strength of the sludge-solidified soil.
The test results in table 1 show that the curing agent for the sludge road can effectively cure the sludge, and various indexes of the cured soil meet the requirements of roadbed fillers.
The foregoing is only a preferred embodiment of the present application and it should be noted that those skilled in the art can make several improvements and modifications without departing from the principle of the present application, and these improvements and modifications should also be considered as the protection scope of the present application.
Claims (6)
1. A curing agent for sludge roads, comprising:
a boron fluoride compound, dichloromaleic anhydride, glycerol trimellitic anhydride, dodecyl maleic anhydride, benzophenone tetracarboxyl anhydride, endomethyltetrahydrophthalic anhydride, a first mixture, a second mixture and a water absorbent; the boron fluoride compound is selected from boron trifluoride ethyl aniline and/or boron trifluoride pyridine; the water absorbent is selected from one or more of quicklime, anhydrous calcium chloride, magnesium carbide, magnesium oxide and silicon dioxide;
the first mixture contains diaminodiphenylmethane and isophoronediamine; the diaminodiphenylmethane accounts for 30-40% of the weight of the first mixture, and the isophorone diamine accounts for 60-70% of the weight of the first mixture;
the second mixture contains o-toluenediamine, m-toluenediamine, and diaminodiphenylmethane; in the second mixture, the weight ratio of the o-toluenediamine, the m-toluenediamine, and the diaminodiphenylmethane is (22-28): (7-13): (62-68).
2. The curing agent for sludge roads as set forth in claim 1, wherein the water absorbing agent comprises, in parts by weight:
3. the curing agent for the sludge road as claimed in claim 1, which comprises the following components in parts by weight:
4. the curing agent for the sludge road as claimed in claim 1, which comprises the following components in parts by weight:
5. the method for preparing the curing agent for the sludge road according to claim 1, which comprises the following steps:
step 1, mixing a water absorbent, a fluorine boron compound, dichloromaleic anhydride, glycerol trimellitic anhydride, dodecyl maleic anhydride, benzophenone tetracarboxylic anhydride and endomethyltetrahydrophthalic anhydride to prepare a mixture 1; wherein the water absorbent is a powdery water absorbent;
step 2, mixing the first mixture, the second mixture and the mixture 1 to prepare a curing agent for the sludge road;
the first mixture contains diaminodiphenylmethane and isophoronediamine;
the second mixture contains o-toluenediamine, m-toluenediamine, and diaminodiphenylmethane.
6. A production method according to claim 5, wherein the particle size of the water absorbing agent is 300 to 500 mesh.
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Citations (5)
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|---|---|---|---|---|
| WO2006049465A1 (en) * | 2004-11-05 | 2006-05-11 | Jong-Won Park | Pulp sludge ash composition for producing building materials |
| CN107459249A (en) * | 2017-08-28 | 2017-12-12 | 西安理工大学 | A kind of curing of river silt |
| CN108328969A (en) * | 2017-12-29 | 2018-07-27 | 宁波市建通环保科技有限公司 | A kind of sludge treatment curing agent and preparation method thereof |
| KR20190006233A (en) * | 2017-07-10 | 2019-01-18 | 주식회사 그릿비 | Construction method of water-permeable pavement with excellent properties of stability, economy and conduct ability for pavement and road |
| CN110105004A (en) * | 2019-04-29 | 2019-08-09 | 西安理工大学 | A kind of preparation method of sludge solidification brick |
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2020
- 2020-06-05 CN CN202010505487.4A patent/CN111620529B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2006049465A1 (en) * | 2004-11-05 | 2006-05-11 | Jong-Won Park | Pulp sludge ash composition for producing building materials |
| KR20190006233A (en) * | 2017-07-10 | 2019-01-18 | 주식회사 그릿비 | Construction method of water-permeable pavement with excellent properties of stability, economy and conduct ability for pavement and road |
| CN107459249A (en) * | 2017-08-28 | 2017-12-12 | 西安理工大学 | A kind of curing of river silt |
| CN108328969A (en) * | 2017-12-29 | 2018-07-27 | 宁波市建通环保科技有限公司 | A kind of sludge treatment curing agent and preparation method thereof |
| CN110105004A (en) * | 2019-04-29 | 2019-08-09 | 西安理工大学 | A kind of preparation method of sludge solidification brick |
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