CN114874749A - Underwater plugging material and preparation method thereof - Google Patents
Underwater plugging material and preparation method thereof Download PDFInfo
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- CN114874749A CN114874749A CN202210482597.2A CN202210482597A CN114874749A CN 114874749 A CN114874749 A CN 114874749A CN 202210482597 A CN202210482597 A CN 202210482597A CN 114874749 A CN114874749 A CN 114874749A
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J195/00—Adhesives based on bituminous materials, e.g. asphalt, tar, pitch
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J11/00—Features of adhesives not provided for in group C09J9/00, e.g. additives
- C09J11/02—Non-macromolecular additives
- C09J11/04—Non-macromolecular additives inorganic
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J11/00—Features of adhesives not provided for in group C09J9/00, e.g. additives
- C09J11/02—Non-macromolecular additives
- C09J11/06—Non-macromolecular additives organic
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J11/00—Features of adhesives not provided for in group C09J9/00, e.g. additives
- C09J11/08—Macromolecular additives
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J175/00—Adhesives based on polyureas or polyurethanes; Adhesives based on derivatives of such polymers
- C09J175/04—Polyurethanes
- C09J175/08—Polyurethanes from polyethers
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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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- Chemical & Material Sciences (AREA)
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- Inorganic Chemistry (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
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Abstract
The invention relates to an underwater plugging material and a preparation method thereof, wherein the underwater plugging material comprises the following components in parts by mass: 80-100 parts of 90# petroleum asphalt, 40-100 parts of polyurethane particles, 15-40 parts of rubber tire powder, 35-50 parts of filler, 6-10 parts of tackifier, 1-2 parts of coupling agent, 1-2 parts of stabilizer and 3-5 parts of softener. The underwater plugging material is a non-reactive underwater rapid plugging material, takes 90# petroleum asphalt as a matrix, and is modified by recovery materials such as polyether polyurethane, rubber powder and the like, so that the material not only has cohesive force enough to resist water flow impact, but also has good pourability at high temperature, and is particularly suitable for rapid plugging of concentrated leakage channels with high water flow speed. Meanwhile, the underwater plugging material has good underwater bonding performance with cracks and channels, the low-temperature cohesion is increased geometrically under water cooling, and the underwater plugging material has certain elasticity at low temperature and can adapt to the deformation of the cracks and leakage channels.
Description
Technical Field
The invention relates to the technical field of engineering materials, in particular to an underwater plugging material and a preparation method thereof.
Background
When a hydraulic structure leaks, because the existing chemical grouting materials and inorganic grouting materials such as cement are generally reaction type materials, a certain reaction time is needed to exert the plugging performance, and under the condition of a certain water flow speed, the existing chemical grouting materials and the existing inorganic grouting materials such as cement are always flushed away by a large amount of flowing water and lost before the existing chemical grouting materials and the existing inorganic grouting materials are completely reacted, so that the double loss of materials and time is caused. Therefore, under the condition of a certain water flow speed, the grouting material needs to have enough cohesive force in order to prevent the grouting material from being flushed away, and the asphalt grouting is superior to other grouting methods in that filled asphalt is not easy to flush away, is simple to construct and is particularly suitable for quick plugging treatment of a concentrated leakage channel with a certain flow speed.
When the water pressure of the concentrated leakage channel is higher, the water flow speed is higher, and in order to prevent the grouting material from being washed away, the cementing force required to be higher is higher. For ordinary asphalt, because of its warm-sticking property, the larger its cohesion, the poorer the pourability. Moreover, ordinary asphalt has low-temperature brittleness and poor adhesion performance with concrete and rocks under water. When the cracks and leak paths are deformed, leakage will occur again.
Disclosure of Invention
Aiming at the defects of the material for blocking the high-flow-rate centralized leakage channel in the current water conservancy and water transportation and tunnel engineering, the invention mainly aims to provide a non-reactive underwater blocking material and a preparation method thereof, which are mainly applied to blocking the centralized leakage channel of buildings such as water conservancy and hydropower engineering, water transportation engineering, tunnel engineering and the like. The underwater plugging material not only has enough cohesive force, but also has good groutability, and is particularly suitable for plugging concentrated leakage channels of high water flow.
In order to achieve the purpose, the main technical scheme is as follows:
an underwater plugging material comprises the following main components in parts by mass: 80-100 parts of 90# petroleum asphalt, 40-100 parts of polyurethane particles, 15-40 parts of rubber tire powder, 35-50 parts of filler, 6-10 parts of tackifier, 1-2 parts of coupling agent, 1-2 parts of stabilizer and 3-5 parts of softener.
The main components of the underwater plugging material are 90# petroleum asphalt and polyether polyurethane particles. Asphalt is melted into liquid fluid by heating, and is condensed into a cement body again after being cooled when meeting water, and the asphalt grouting achieves the effects of plugging and seepage prevention by utilizing the temperature viscosity characteristic of asphalt. Under the condition of the same grouting temperature, common petroleum asphalt with high grade has good groutability due to low viscosity, but the water flow impact resistance after the asphalt is poured into leakage holes is weak, the solidification time is long, and the seepage-proofing and leakage-stopping efficiency is low; the low-grade common petroleum asphalt has poor filling performance due to high viscosity, and when the asphalt is filled into leakage holes, the asphalt is good in water impact resistance, but is quickly solidified when meeting water, so that an effective filling range cannot be reached, the anti-seepage and leak-stopping effects are poor, the temperature required for heating and melting is high, the energy consumption is high, and the safety is not high enough. The emulsified asphalt has low construction temperature and good filling property, but the temperature viscosity characteristic is changed, and the emulsified asphalt can be coagulated and hardened after emulsion breaking. The medium grade 90# petroleum asphalt is selected as the matrix asphalt, and certain flushability and water flow impact resistance are considered.
The polyether polyurethane particles can be commercial products, and can also be cut into particles with the particle size of 2 mm-5 mm by using recovered polyurethane. The polyether polyurethane is melted in the asphalt matrix at high temperature, so that the aromatic component and the colloid in the matrix are increased, and the glass transition temperature of the asphalt is reduced, so that the polyether polyurethane can improve the pourability of the material at high temperature on one hand, and can improve the low-temperature brittleness of the material on the other hand.
The rubber tire powder is powder formed by grinding recycled rubber tires, and the fineness of the powder is more than or equal to 40 meshes. The rubber powder is uniformly dispersed in the asphalt matrix to carry out swelling reaction and form a continuous network structure, so that on one hand, the cohesive force of the material at high temperature can be improved, and the material is ensured not to be easily lost under high-speed water flow; on the other hand, the elasticity of the material at low temperature can be increased, and the deformation of cracks and leakage channels can be adapted.
The tackifier is one or more of petroleum resin, terpene resin and rosin resin. Tackifiers can increase the adhesion of materials to cracks and channels.
The filler is one or more of cement, fly ash, limestone powder and talcum powder, and can be combined according to actual needs (considering factors such as raw material supply, cost and the like). The filler can increase the density of the material and reduce the cost.
The silane coupling agent can improve dispersibility and adhesion of the filler.
The stabilizer is one or two of calcium stearate and zinc stearate. The stabilizer prevents oxidative decomposition and aging of the material.
The softener is one or more of pine tar, dioctyl phthalate and dioctyl adipate. The softening agent is helpful for uniform dispersion of rubber tire powder in the matrix material, and increases the elasticity of the material.
As a preferred embodiment, the underwater plugging material comprises, by mass, 100 parts of # 90 petroleum asphalt, 80 parts of polyether polyurethane particles, 35 parts of rubber tire powder, 50 parts of cement, 2 parts of rosin resin, 4 parts of terpene resin, 4 parts of petroleum resin, 2 parts of silane coupling agent, 2 parts of zinc stearate, 3 parts of pine tar, 1 part of dioctyl phthalate and 1 part of dioctyl adipate.
As a preferred embodiment, the underwater plugging material comprises 90 parts by mass of 90# petroleum asphalt, 100 parts by mass of polyurethane particles, 40 parts by mass of rubber tire powder, 30 parts by mass of fly ash, 20 parts by mass of limestone powder, 2 parts by mass of rosin resin, 4 parts by mass of terpene resin, 4 parts by mass of petroleum resin, 2 parts by mass of silane coupling agent, 2 parts by mass of zinc stearate, 3 parts by mass of pine tar, 1 part by mass of dioctyl phthalate and 1 part by mass of dioctyl adipate.
The invention also aims to provide a preparation method of the underwater plugging material, which comprises the following steps:
sequentially adding rubber tire powder and a softening agent into the molten 90# petroleum asphalt, preserving heat, and shearing and stirring for 30-60 min;
sequentially adding polyether polyurethane particles, a tackifier and a stabilizer into the mixed system, and continuously preserving heat and shearing and stirring for 30-45 min until the mixture is completely melted;
and adding the filler and the silane coupling agent into the reaction kettle in sequence, preserving heat, shearing and stirring for 15-30 min until the mixture is completely uniform, thereby obtaining the underwater plugging material.
The underwater plugging material is a non-reactive underwater rapid plugging material, takes 90# petroleum asphalt as a matrix, and is modified by recovery materials such as polyether polyurethane, rubber powder and the like, so that the material not only has cohesive force enough to resist water flow impact, but also has good pourability at high temperature (low viscosity at 170 ℃), and is particularly suitable for rapid plugging of concentrated leakage channels with high water flow speed. Meanwhile, the underwater plugging material has good underwater bonding performance with cracks and channels, the low-temperature cohesion is increased in a geometric mode under water cooling (namely the dynamic viscosity at 60 ℃ is increased sharply), and the underwater plugging material has certain elasticity at low temperature and can adapt to the deformation of the cracks and the leakage channels. The material of the invention utilizes the recovered polyether polyurethane and rubber powder as modified materials, thereby not only reducing the material cost, but also being beneficial to environmental protection and having economic and social benefits. The material of the invention is mainly applied to the building fields of water conservancy and hydropower engineering, water transportation engineering, tunnel engineering and the like.
Detailed Description
In order to better understand the present invention, the contents of the present invention are further illustrated in connection with specific examples and comparative examples.
Example 1
Weighing 100 parts of No. 90 petroleum asphalt into a reaction kettle, completely melting at 160-180 ℃, then weighing 25 parts of rubber tire powder, 2.5 parts of pine tar, 0.5 part of dioctyl phthalate and 0.5 part of dioctyl adipate into the reaction kettle, preserving heat, shearing and stirring for 30 min; then weighing 60 parts of polyether polyurethane particles, 2 parts of rosin resin, 6 parts of terpene resin and 1 part of zinc stearate, sequentially adding into the reaction kettle, continuously preserving heat, shearing and stirring for about 30min until the polyether polyurethane particles are completely melted; and finally, adding 40 parts of cement and 1.5 parts of silane coupling agent into the reaction kettle, preserving heat, shearing and stirring for about 20min until the cement and the silane coupling agent are completely and uniformly mixed. This embodiment can be used for plugging of leakage paths with moderate water flow rates.
Example 2
Weighing 100 parts of No. 90 petroleum asphalt into a reaction kettle, completely melting at 160-180 ℃, then weighing 35 parts of rubber tire powder, 3 parts of pine tar, 1 part of dioctyl phthalate and 1 part of dioctyl adipate into the reaction kettle, preserving heat, shearing and stirring for 45 min; then weighing 80 parts of polyether polyurethane particles, 2 parts of rosin resin, 4 parts of terpene resin, 4 parts of petroleum resin and 2 parts of zinc stearate, sequentially adding into the reaction kettle, and continuously preserving heat and shearing and stirring for about 45min until the polyether polyurethane particles are completely melted; and finally, adding 50 parts of cement and 2 parts of silane coupling agent into the reaction kettle, preserving heat, shearing and stirring for about 25min until the cement and the silane coupling agent are completely and uniformly mixed. This embodiment can be used for plugging leakage paths with high water flow speed.
Example 3
Weighing 100 parts of No. 90 petroleum asphalt into a reaction kettle, completely melting at 160-180 ℃, then weighing 20 parts of rubber tire powder, 2 parts of pine tar, 0.5 part of dioctyl phthalate and 0.5 part of dioctyl adipate into the reaction kettle, preserving heat, shearing and stirring for 30 min; then weighing 40 parts of polyether polyurethane particles, 2 parts of rosin resin, 4 parts of petroleum resin and 1 part of calcium stearate, sequentially adding into the reaction kettle, continuously preserving heat, shearing and stirring for about 45min until the materials are completely melted; and finally, adding 35 parts of cement and 1 part of silane coupling agent into the reaction kettle, preserving heat, shearing and stirring for about 20min until the cement and the silane coupling agent are completely and uniformly mixed. This embodiment can be used for plugging of leakage paths with low water flow velocity.
Example 4
Weighing 80 parts of 90# petroleum asphalt into a reaction kettle, completely melting at 160-180 ℃, then weighing 20 parts of rubber tire powder, 2.5 parts of pine tar, 0.5 part of dioctyl phthalate and 0.5 part of dioctyl adipate into the reaction kettle, preserving heat, shearing and stirring for 30 min; then weighing 80 parts of polyether polyurethane particles, 3 parts of rosin resin, 6 parts of terpene resin and 1 part of zinc stearate, sequentially adding into the reaction kettle, continuously preserving heat, shearing and stirring for about 30min until the polyether polyurethane particles are completely melted; and finally, adding 25 parts of cement, 20 parts of fly ash and 1.5 parts of silane coupling agent into the reaction kettle, preserving heat, shearing and stirring for about 20min until the materials are completely and uniformly mixed.
Example 5
Weighing 90 parts of 90# petroleum asphalt into a reaction kettle, completely melting at 160-180 ℃, then weighing 40 parts of rubber tire powder, 3 parts of pine tar, 1 part of dioctyl phthalate and 1 part of dioctyl adipate into the reaction kettle, preserving heat, shearing and stirring for 60 min; then weighing 100 parts of polyether polyurethane particles, 2 parts of rosin resin, 4 parts of terpene resin, 4 parts of petroleum resin and 2 parts of zinc stearate, sequentially adding into the reaction kettle, and continuously preserving heat and shearing and stirring for about 45min until the polyether polyurethane particles are completely melted; and finally, adding 30 parts of fly ash, 20 parts of limestone powder and 2 parts of silane coupling agent into the reaction kettle, preserving heat, shearing and stirring for about 30min until the fly ash, the limestone powder and the silane coupling agent are completely and uniformly mixed.
Example 6
Weighing 100 parts of No. 90 petroleum asphalt into a reaction kettle, completely melting at 160-180 ℃, then weighing 15 parts of rubber tire powder, 2 parts of pine tar and 1 part of dioctyl adipate into the reaction kettle, preserving heat, shearing and stirring for 30 min; then weighing 60 parts of polyether polyurethane particles, 2 parts of rosin resin, 4 parts of petroleum resin and 1 part of calcium stearate, sequentially adding the materials into a reaction kettle, and continuously preserving heat and shearing and stirring for about 45min until the materials are completely melted; and finally, adding 40 parts of limestone powder and 1 part of silane coupling agent into the reaction kettle, preserving heat, shearing and stirring for about 15min until the materials are completely and uniformly mixed. This embodiment can be used for plugging of leakage paths with low water flow velocity.
Comparative example 1
Weighing 100 parts of 90# petroleum asphalt into a reaction kettle, completely melting at 160-180 ℃, then weighing 45 parts of rubber tire powder, 4 parts of pine tar, 1.5 parts of dioctyl phthalate and 1.5 parts of dioctyl adipate into the reaction kettle, preserving heat, shearing and stirring for 60 min; then weighing 100 parts of polyether polyurethane particles, 3 parts of rosin resin, 5 parts of terpene resin, 4 parts of petroleum resin and 3 parts of zinc stearate, sequentially adding into the reaction kettle, and continuously preserving heat and shearing and stirring for about 45min until the polyether polyurethane particles are completely melted; and finally, adding 55 parts of cement and 3 parts of silane coupling agent into the reaction kettle, preserving heat, shearing and stirring for about 30min until the cement and the silane coupling agent are completely and uniformly mixed.
Comparative example 2
Weighing 100 parts of No. 90 petroleum asphalt into a reaction kettle, completely melting at 160-180 ℃, then weighing 10 parts of rubber tire powder and 2 parts of pine tar into the reaction kettle, preserving heat, shearing and stirring for 25 min; then weighing 30 parts of polyether polyurethane particles, 2 parts of rosin resin and 1 part of calcium stearate, sequentially adding the materials into a reaction kettle, continuously preserving heat, shearing and stirring for about 25min until the materials are completely melted; and finally, adding 30 parts of cement and 1 part of silane coupling agent into the reaction kettle, preserving heat, shearing and stirring for about 15min until the cement and the silane coupling agent are completely and uniformly mixed.
Comparative example 3
Weighing 100 parts of 90# petroleum asphalt into a reaction kettle, completely melting at 160-180 ℃, adding 20 parts of cement into the reaction kettle, preserving heat, shearing and stirring for about 10min until the mixture is completely and uniformly mixed.
The performance test results of the plugging material examples 1-6 and the comparative examples 1-3 are shown in the following table:
TABLE 1 Performance results for each of the examples and comparative examples
From the performance test results, the performance of the underwater plugging material of the embodiment 1-6 meets the following indexes:
low temperature ductility (5 ℃,10mm/min) is more than or equal to 250mm, tensile bonding property is more than or equal to 135%, dynamic viscosity at 60 ℃ is more than or equal to 20000 Pa.S, and apparent viscosity at 170 ℃ is less than or equal to 2.0 Pa.S.
Wherein, the plugging material is suitable for plugging a leakage channel with low water flow velocity when the dynamic viscosity of the plugging material is more than or equal to 20000 Pa.S at 60 ℃; the plugging material is suitable for plugging a leakage channel with medium water flow speed when the dynamic viscosity of the plugging material is more than or equal to 30000Pa & S at 60 ℃; the plugging material is suitable for plugging a leakage channel with high water flow speed when the dynamic viscosity of the plugging material is more than or equal to 40000 Pa.S at 60 ℃.
The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention in any way, and it will be apparent to those skilled in the art that various modifications and variations can be made in the present invention. Any equivalent replacement, equivalent transformation and the like within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (10)
1. The underwater plugging material is characterized by comprising the following components in parts by mass: 80-100 parts of No. 90 petroleum asphalt, 40-100 parts of polyether polyurethane particles, 15-40 parts of rubber tire powder, 35-50 parts of filler, 6-10 parts of tackifier, 1-2 parts of silane coupling agent, 1-2 parts of stabilizer and 3-5 parts of softener.
2. The underwater plugging material is characterized in that the particle size of the polyether polyurethane particles is 2-5 mm.
3. The underwater plugging material as claimed in claim 1, wherein the rubber tire powder is powder formed by grinding recycled rubber tires, and the fineness of the powder is more than or equal to 40 meshes.
4. The underwater plugging material of claim 1, wherein the tackifier is one or more of petroleum resin, terpene resin and rosin resin.
5. The underwater plugging material according to claim 1, wherein the filler is one or more of cement, fly ash, limestone powder and talcum powder.
6. The underwater plugging material of claim 1 wherein the stabilizer is one or both of calcium stearate and zinc stearate.
7. The underwater plugging material of claim 1 wherein the softening agent is one or more of pine tar, dioctyl phthalate and dioctyl adipate.
8. The underwater plugging material according to claim 1, wherein the underwater plugging material comprises, by mass, 100 parts of # 90 petroleum asphalt, 80 parts of polyether polyurethane particles, 35 parts of rubber tire powder, 50 parts of cement, 2 parts of rosin resin, 4 parts of terpene resin, 4 parts of petroleum resin, 2 parts of silane coupling agent, 2 parts of zinc stearate, 3 parts of pine tar, 1 part of dioctyl phthalate, and 1 part of dioctyl adipate.
9. The underwater plugging material according to claim 1, wherein the underwater plugging material comprises, by mass, 90 parts of # 90 petroleum asphalt, 100 parts of polyurethane particles, 40 parts of rubber tire powder, 30 parts of fly ash, 20 parts of limestone powder, 2 parts of rosin resin, 4 parts of terpene resin, 4 parts of petroleum resin, 2 parts of a silane coupling agent, 2 parts of zinc stearate, 3 parts of pine tar, 1 part of dioctyl phthalate, and 1 part of dioctyl adipate.
10. The underwater plugging material according to any one of claims 1 to 9, comprising:
sequentially adding rubber tire powder and a softening agent into the molten 90# petroleum asphalt, preserving heat, and shearing and stirring for 30-60 min;
sequentially adding polyether polyurethane particles, a tackifier and a stabilizer into the mixed system, and continuously preserving heat and shearing and stirring for 30-45 min until the mixture is completely melted;
and adding the filler and the silane coupling agent into the reaction kettle in sequence, preserving heat, shearing and stirring for 15-30 min until the mixture is completely uniform, thereby obtaining the underwater plugging material.
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1078759A (en) * | 1992-05-11 | 1993-11-24 | 水利部交通部能源部南京水利科学研究院 | Caulking technology with tarring |
| CN108219435A (en) * | 2016-12-15 | 2018-06-29 | 中国石油天然气股份有限公司 | Caulking factice and preparation method thereof |
| CN110144195A (en) * | 2019-05-20 | 2019-08-20 | 黄广展 | A kind of closure anti-sloughing agent and preparation method thereof |
| CN113930079A (en) * | 2021-09-09 | 2022-01-14 | 长春建业集团股份有限公司 | Modified asphalt, preparation method and application thereof |
-
2022
- 2022-05-05 CN CN202210482597.2A patent/CN114874749A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1078759A (en) * | 1992-05-11 | 1993-11-24 | 水利部交通部能源部南京水利科学研究院 | Caulking technology with tarring |
| CN108219435A (en) * | 2016-12-15 | 2018-06-29 | 中国石油天然气股份有限公司 | Caulking factice and preparation method thereof |
| CN110144195A (en) * | 2019-05-20 | 2019-08-20 | 黄广展 | A kind of closure anti-sloughing agent and preparation method thereof |
| CN113930079A (en) * | 2021-09-09 | 2022-01-14 | 长春建业集团股份有限公司 | Modified asphalt, preparation method and application thereof |
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