CN112898902B - Composite oil film coated low-freezing-point material spraying liquid for asphalt pavement and preparation method thereof - Google Patents
Composite oil film coated low-freezing-point material spraying liquid for asphalt pavement and preparation method thereof Download PDFInfo
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- CN112898902B CN112898902B CN202110099820.0A CN202110099820A CN112898902B CN 112898902 B CN112898902 B CN 112898902B CN 202110099820 A CN202110099820 A CN 202110099820A CN 112898902 B CN112898902 B CN 112898902B
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- 239000010426 asphalt Substances 0.000 title claims abstract description 80
- 239000000463 material Substances 0.000 title claims abstract description 68
- 239000002131 composite material Substances 0.000 title claims abstract description 43
- 239000007788 liquid Substances 0.000 title claims abstract description 41
- 238000005507 spraying Methods 0.000 title claims abstract description 27
- 238000002360 preparation method Methods 0.000 title claims abstract description 16
- 239000003921 oil Substances 0.000 claims abstract description 55
- 238000002156 mixing Methods 0.000 claims abstract description 24
- LPXPTNMVRIOKMN-UHFFFAOYSA-M sodium nitrite Chemical compound [Na+].[O-]N=O LPXPTNMVRIOKMN-UHFFFAOYSA-M 0.000 claims abstract description 22
- 238000003756 stirring Methods 0.000 claims abstract description 22
- 239000002904 solvent Substances 0.000 claims abstract description 18
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 claims abstract description 15
- 239000003995 emulsifying agent Substances 0.000 claims abstract description 15
- VSGNNIFQASZAOI-UHFFFAOYSA-L calcium acetate Chemical compound [Ca+2].CC([O-])=O.CC([O-])=O VSGNNIFQASZAOI-UHFFFAOYSA-L 0.000 claims abstract description 13
- 239000001639 calcium acetate Substances 0.000 claims abstract description 13
- 235000011092 calcium acetate Nutrition 0.000 claims abstract description 13
- 229960005147 calcium acetate Drugs 0.000 claims abstract description 13
- 230000008014 freezing Effects 0.000 claims abstract description 13
- 238000007710 freezing Methods 0.000 claims abstract description 13
- UEGPKNKPLBYCNK-UHFFFAOYSA-L magnesium acetate Chemical compound [Mg+2].CC([O-])=O.CC([O-])=O UEGPKNKPLBYCNK-UHFFFAOYSA-L 0.000 claims abstract description 13
- 229940069446 magnesium acetate Drugs 0.000 claims abstract description 13
- 235000011285 magnesium acetate Nutrition 0.000 claims abstract description 13
- 239000011654 magnesium acetate Substances 0.000 claims abstract description 13
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 12
- 239000010705 motor oil Substances 0.000 claims abstract description 11
- 235000010288 sodium nitrite Nutrition 0.000 claims abstract description 11
- 239000002699 waste material Substances 0.000 claims abstract description 11
- 239000007921 spray Substances 0.000 claims abstract description 10
- 239000003350 kerosene Substances 0.000 claims abstract description 9
- 238000001914 filtration Methods 0.000 claims abstract description 7
- 239000011248 coating agent Substances 0.000 claims description 19
- 238000000576 coating method Methods 0.000 claims description 19
- 238000000034 method Methods 0.000 claims description 7
- 238000005336 cracking Methods 0.000 claims description 6
- 239000002245 particle Substances 0.000 claims description 6
- 239000007787 solid Substances 0.000 claims description 6
- 239000003208 petroleum Substances 0.000 claims description 4
- 125000002091 cationic group Chemical group 0.000 claims description 3
- 239000011280 coal tar Substances 0.000 claims description 3
- 230000005764 inhibitory process Effects 0.000 abstract description 8
- 239000000203 mixture Substances 0.000 abstract description 6
- 229960000819 sodium nitrite Drugs 0.000 abstract description 3
- 230000002401 inhibitory effect Effects 0.000 abstract description 2
- 229910003471 inorganic composite material Inorganic materials 0.000 abstract description 2
- 239000011259 mixed solution Substances 0.000 abstract 2
- 238000004134 energy conservation Methods 0.000 abstract 1
- 239000000243 solution Substances 0.000 abstract 1
- 230000000052 comparative effect Effects 0.000 description 9
- 238000002844 melting Methods 0.000 description 7
- 239000011294 coal tar pitch Substances 0.000 description 6
- 238000005303 weighing Methods 0.000 description 6
- 230000007613 environmental effect Effects 0.000 description 5
- 230000008018 melting Effects 0.000 description 5
- 239000000084 colloidal system Substances 0.000 description 4
- 238000001035 drying Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- 230000001629 suppression Effects 0.000 description 4
- 238000005265 energy consumption Methods 0.000 description 3
- 238000010276 construction Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 238000011056 performance test Methods 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 241001391944 Commicarpus scandens Species 0.000 description 1
- 101000828805 Cowpox virus (strain Brighton Red) Serine proteinase inhibitor 2 Proteins 0.000 description 1
- 229910001294 Reinforcing steel Inorganic materials 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000005553 drilling Methods 0.000 description 1
- 239000000839 emulsion Substances 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 238000009472 formulation Methods 0.000 description 1
- 239000011159 matrix material Substances 0.000 description 1
- 238000010297 mechanical methods and process Methods 0.000 description 1
- 239000003595 mist Substances 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
- 239000002689 soil Substances 0.000 description 1
- 238000003892 spreading Methods 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D195/00—Coating compositions based on bituminous materials, e.g. asphalt, tar, pitch
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D7/00—Features of coating compositions, not provided for in group C09D5/00; Processes for incorporating ingredients in coating compositions
- C09D7/40—Additives
- C09D7/60—Additives non-macromolecular
- C09D7/61—Additives non-macromolecular inorganic
- C09D7/62—Additives non-macromolecular inorganic modified by treatment with other compounds
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D7/00—Features of coating compositions, not provided for in group C09D5/00; Processes for incorporating ingredients in coating compositions
- C09D7/40—Additives
- C09D7/60—Additives non-macromolecular
- C09D7/63—Additives non-macromolecular organic
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
- C09K3/00—Materials not provided for elsewhere
- C09K3/18—Materials not provided for elsewhere for application to surfaces to minimize adherence of ice, mist or water thereto; Thawing or antifreeze materials for application to surfaces
Abstract
The invention discloses a composite oil film coated low freezing point material spray liquid for an asphalt pavement and a preparation method thereof, wherein the spray liquid comprises 140 parts of 135-plus asphalt, 49 parts of water, 0.01-0.02 part of diluted hydrochloric acid, 0.6-1.2 parts of emulsifier, 8-12 parts of waste engine oil, 2-3 parts of solvent kerosene, 7 parts of calcium acetate, 4 parts of magnesium acetate and 4 parts of sodium nitrite. Mixing a mixture of calcium acetate, magnesium acetate and sodium nitrite into a mixed solution formed by stirring asphalt, waste engine oil and kerosene under a medium-temperature condition; and filtering and airing the mixed solution, adding an emulsifying agent, water, dilute hydrochloric acid and emulsified asphalt prepared from asphalt, and stirring to obtain the composite oil film coated low-freezing-point material spraying solution for the asphalt pavement. The spraying liquid has high ice inhibition performance, and has the characteristics of energy conservation, quick traffic opening and multiple actions, and is an organic-inorganic composite material with good processability and capable of inhibiting asphalt pavement thin ice disasters.
Description
Technical Field
The invention relates to the technical field of road engineering ice prevention and removal, in particular to a composite oil film coated low-freezing-point material spraying liquid for an asphalt pavement and a preparation method thereof.
Background
Low-freezing-point pavement is receiving more and more attention with the concept of environmental protection and good ice melting effect. At present, the technology of removing ice and snow on asphalt pavements mainly adopts manual snow removal, mechanical snow removal and spreading of snow melting salt. However, the snow removal by manpower is inefficient, and the mechanical method and the chemical snow-melting agent method cause damage to the pavement structure and the attached facilities, corrosion of reinforcing steel bars, soil and water environmental pollution. And the ice and snow removing technology needs to occupy traffic passing resources in the ice and snow removing process, and influences the normal operation of roads. Under the background, the coating type low-freezing-point pavement effectively guarantees the safety and efficiency of road traffic operation due to the characteristics of active ice and snow melting and environmental protection.
The coating type low-freezing-point pavement is characterized in that emulsified asphalt is used as a base material and wrapped with a low-freezing-point material, a special device is adopted to spray low-freezing-point emulsified asphalt emulsion to the pavement in a mist form, and a film with the thickness of about 1mm is formed after construction so as to achieve the snow-melting and ice-suppression effects. However, the service life of the ice and snow melting road surface is shortened because the salinized substance is easy to break and separate out, and the large-area application of the ice and snow melting road surface is limited. In order to solve the problem, development of the ice inhibitor with excellent ice inhibition and multiple functions is urgently needed, so that the service life of ice removal is prolonged, and a good ice inhibition effect is achieved.
Disclosure of Invention
The invention aims to provide a multiple-time ice-suppressing composite oil film coated low-freezing-point material spraying liquid for an asphalt pavement, which has the advantages of excellent ice-suppressing performance and adhesion, environmental protection, low energy consumption and the like, has good skid resistance and multiple-time ice suppression, and is an organic-inorganic composite material capable of suppressing asphalt pavement thin ice disasters. The composite oil film coated low-freezing-point material spray liquid can be used for inhibiting the formation of thin ice on an asphalt pavement, reducing the adhesion of the asphalt pavement and an ice and snow interface, assisting in removing ice and snow by machinery and the like.
The invention further provides a preparation method of the energy-saving and repeated ice suppression composite oil film coated low-freezing-point material spraying liquid for the asphalt pavement.
In order to achieve the purpose, the invention adopts the following technical scheme:
the invention provides a composite oil film coated low-freezing-point material spraying liquid for an asphalt pavement, which comprises the following raw materials in percentage by mass:
140 portions of asphalt 135-plus material, 49 portions of water, 0.01-0.02 portion of dilute hydrochloric acid and 0.6-1.2 portions of emulsifier; 8-12 parts of waste engine oil and 2-3 parts of solvent kerosene; 7 parts of calcium acetate, 4 parts of magnesium acetate and 4 parts of sodium nitrite.
Preferably, the asphalt is one of coal tar asphalt, petroleum asphalt or natural asphalt.
Preferably, the dilute hydrochloric acid is hydrochloric acid with the concentration of 2.5-3 mol/L.
Preferably, the emulsifier is one of cationic fast-cracking and fast-setting asphalt emulsifiers BH-K.
Preferably, the solvent kerosene is one of D80 solvent oil, D60 solvent oil and D40 solvent oil.
The invention further provides a preparation method of the composite oil film coated low-freezing-point material spray liquid for the asphalt pavement, which comprises the following steps:
A. firstly, mixing 85-90 parts of asphalt and 8-12 parts of waste engine oil in a mass ratio with 2-3 parts of solvent kerosene to prepare a low-freezing-point material coating liquid;
B. b, fully mixing the low-freezing-point material coating solution obtained in the step A, 7 parts of calcium acetate, 4 parts of magnesium acetate and 4 parts of sodium nitrite according to the mass ratio, stirring, filtering out solid particles by using a screen, and airing to obtain a composite oil film coated low-freezing-point material;
C. then mixing and stirring 50 parts of asphalt, 0.6-1.2 parts of emulsifier, 49 parts of water and 0.01-0.02 part of dilute hydrochloric acid in mass ratio to obtain emulsified asphalt;
D. and C, fully mixing the composite oil film coated low-freezing-point material obtained in the step B and the emulsified asphalt obtained in the step C according to the mass ratio to obtain the composite oil film coated low-freezing-point material spraying liquid for the asphalt pavement.
Preferably, in the step A, the temperature for preparing the coating liquid of the low-freezing-point material is 50-60 ℃, and the stirring time is 20-30 min.
Preferably, in the step B, the temperature for preparing the composite oil film coated low-freezing-point material is 50-60 ℃, and the stirring time is 8-15 min.
Preferably, in the step C, when the emulsified asphalt is prepared, the temperature of the added water is 60-70 ℃, and the preparation temperature of the emulsified asphalt is 120-135 ℃.
The low-freezing-point material coating liquid is prepared by using the waste engine oil, the kerosene and the asphalt, so that the use amount of the asphalt is reduced, and the cost of the low-freezing-point material coating liquid is effectively controlled; the low freezing point material formed by mixing calcium acetate, magnesium acetate and sodium nitrite has little influence on the environment and excellent ice inhibition performance; the spraying liquid base material prepared from the emulsifier and the asphalt enables the pavement to be dried quickly, shortens the time of occupying traffic control by construction, and is suitable for quickly recovering the vehicle passing under the condition of quickly opening traffic; besides certain adhesiveness and anti-slip stability, the low-freezing-point material spraying liquid has the advantages that the oil film doped with the waste engine oil enhances the ice suppression times and saves petroleum energy; the low freezing point material spraying liquid has environment-friendly components and low energy consumption, and meets the current environmental protection requirement.
The BPN value of the swing type friction instrument of the low freezing point material spray liquid under a dry condition is not lower than 80, and the bonding strength is greater than 2 MPa; the composite oil film coated low freezing point material spray liquid can be sprayed on the asphalt pavement under the normal temperature condition, the drying can be completed within 1 hour, and the traffic is opened.
Detailed Description
The present invention will be described in further detail with reference to specific examples.
The preparation method of the composite oil film coated low-freezing-point material spray liquid for the asphalt pavement comprises the following steps of:
A. firstly, uniformly and accurately weighing 85-90 parts of asphalt (one of coal tar asphalt, petroleum asphalt or natural asphalt, and optionally matrix asphalt) and 8-12 parts of waste engine oil by mass ratio and 2-3 parts of kerosene (D80 solvent oil, D60 solvent oil or D40 solvent oil) by mass ratio, stirring by using a heating furnace at 50-60 ℃ for 20-30min, and preparing the low-freezing-point material coating liquid with excellent coating property;
B. b, fully mixing the low-freezing-point material coating solution obtained in the step A, 7 parts of calcium acetate and 4 parts of magnesium acetate and 4 parts of sodium nitrite according to the mass ratio, stirring at the temperature of 50-60 ℃ for 8-15min by using a heating furnace again, and filtering out solid particles by using a screen to dry to obtain a composite oil film coated low-freezing-point material;
C. uniformly and accurately weighing 50 parts of asphalt (same as the asphalt) by mass, 0.6-1.2 parts of emulsifier (quick-cracking and quick-setting cationic asphalt emulsifier BH-K), 49 parts of water by mass (at the temperature of 60-70 ℃) and 0.01-0.02 part of dilute hydrochloric acid by mass according to the proportion, and preparing the emulsified asphalt by using a colloid mill;
D. and C, fully mixing the composite oil film coated low-freezing-point material obtained in the step B and the emulsified asphalt obtained in the step C according to the mass ratio to obtain the composite oil film coated low-freezing-point material spraying liquid for the asphalt pavement.
Wherein, the calcium acetate is chemically pure calcium acetate with the content of 98 percent, and the magnesium acetate is chemically pure magnesium acetate with the content of 99 percent.
Specific examples are given below to further illustrate the preparation process of the present invention.
Example 1
A. Uniformly and accurately weighing 88 parts of coal tar pitch and 10 parts of waste engine oil in a mass ratio and 2 parts of D80 solvent oil in a mass ratio according to a proportion, mixing, stirring, and stirring at 60 ℃ for 20min to obtain a low-freezing-point material coating solution;
B. fully mixing the low-freezing-point material coating solution, 7 parts of calcium acetate, 4 parts of magnesium acetate and 4 parts of sodium nitrite according to the mass ratio, stirring for 10min at 50 ℃, filtering out solid particles by using a screen and drying in the air to obtain a composite oil film coated low-freezing-point material;
C. uniformly mixing 50 parts of coal tar pitch, 1.0 part of quick-cracking and quick-setting emulsifier BH-K, 49 parts of water at 60 ℃ and 0.01 part of dilute hydrochloric acid in a mass ratio, and preparing emulsified asphalt by using a colloid mill;
D. and C, fully mixing the composite oil film coated low-freezing-point material obtained in the step B and the emulsified asphalt obtained in the step C according to the mass ratio to obtain the composite oil film coated low-freezing-point material spraying liquid for the asphalt pavement.
Example 2
A. Uniformly and accurately weighing 85 parts of coal tar pitch and 12 parts of waste engine oil in a mass ratio to 2.5 parts of D80 solvent oil in a mass ratio, mixing, stirring, and stirring at 55 ℃ for 25min to obtain a low-freezing-point material coating solution;
B. fully mixing the low-freezing-point material coating solution, 7 parts of calcium acetate, 4 parts of magnesium acetate and 4 parts of sodium nitrite according to the mass ratio, stirring for 12min at 55 ℃, filtering out solid particles by using a screen and drying in the air to obtain a composite oil film coated low-freezing-point material;
C. uniformly mixing 50 parts of coal tar pitch, 0.6 part of quick-cracking and quick-setting emulsifier BH-K, 49 parts of water at 70 ℃ and 0.02 part of dilute hydrochloric acid in a mass ratio, and preparing emulsified asphalt by using a colloid mill;
D. and C, fully mixing the composite oil film coated low-freezing-point material obtained in the step B and the emulsified asphalt obtained in the step C according to the mass ratio to obtain the composite oil film coated low-freezing-point material spraying liquid for the asphalt pavement.
Example 3
A. Uniformly and accurately weighing 40 parts of coal tar pitch, 8 parts of waste engine oil and 3 parts of D80 solvent oil according to the mass ratio, mixing, stirring, and stirring at 50 ℃ for 30min to obtain a low-freezing-point material coating solution;
B. fully mixing the low-freezing-point material coating solution, 7 parts of calcium acetate, 4 parts of magnesium acetate and 4 parts of sodium nitrite according to the mass ratio, stirring for 15min at the temperature of 60 ℃, filtering out solid particles by using a screen and drying in the air to obtain a composite oil film coated low-freezing-point material;
C. uniformly mixing 50 parts of coal tar pitch, 1.2 parts of quick-cracking and quick-setting emulsifier BH-K, 49 parts of water at 70 ℃ and 0.01 part of dilute hydrochloric acid in a mass ratio, and preparing emulsified asphalt by using a colloid mill;
D. and C, fully mixing the composite oil film coated low-freezing-point material obtained in the step B and the emulsified asphalt obtained in the step C according to the mass ratio to obtain the composite oil film coated low-freezing-point material spraying liquid for the asphalt pavement.
The following is a comparison of comparative examples with examples of the present invention to further illustrate the effects of the invention.
Comparative example 1: bitumen, comparative example 2: a mixture of low freezing point materials; the formula of the formula is shown in the table 1:
TABLE 1 comparative example formulation
The specific preparation process of comparative example 2: and weighing calcium acetate, magnesium acetate and sodium nitrite according to a certain proportion, adding the mixture into a beaker, uniformly stirring the mixture at room temperature, and uniformly scattering the obtained low-freezing-point material mixture on a Marshall test piece according to a certain proportion.
The results of the performance tests of the examples and comparative examples are shown in Table 2.
TABLE 2 comparison of Performance indicators
| Detecting items | Comparative example 1 | Comparative example 2 | Example 1 | Example 2 | Example 3 |
| Ice suppression event/times | — | 3 | 11 | 14 | 12 |
| BPN value | 77 | 76 | 81 | 81 | 83 |
| Adhesive force/MPa | 1.6 | — | 2.3 | 2.2 | 2.5 |
Note: the test pieces for the detection items are obtained by drilling or cutting the core of the formed double-layer track plate, and the spraying dosage is 0.6kg/m2The BPN value is measured by a pendulum type friction coefficient instrument, "-" indicates that the item of the test piece is not compared.
According to the performance test result, compared with a comparative example, the energy-saving and multi-time ice inhibition composite oil film coated low-freezing-point material spraying liquid prepared by the invention has the advantages that the ice inhibition times are not less than 10 times under the conditions of-5 ℃ and 0.3mm thin ice; the BPN value of the test piece in a dry state at the temperature of minus 5 ℃ is not lower than 80; the binding power is not lower than 2MPa, and the preparation process and the properties of the components are combined to know that the composite oil film coated low-freezing-point material spraying liquid has the advantages of excellent ice inhibition performance and adhesion, environmental protection, low energy consumption and the like, has good skid resistance and multiple ice inhibition performance, and is quick and simple to prepare and operate.
While the invention has been described in further detail with reference to specific preferred embodiments thereof, it will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention as defined by the appended claims.
Claims (9)
1. A preparation method of a composite oil film coated low-freezing-point material spray liquid for an asphalt pavement is characterized by comprising the following steps:
A. firstly, mixing 85-90 parts of asphalt and 8-12 parts of waste engine oil in a mass ratio with 2-3 parts of solvent kerosene to prepare a low-freezing-point material coating liquid;
B. b, fully mixing the low-freezing-point material coating solution obtained in the step A, 7 parts of calcium acetate, 4 parts of magnesium acetate and 4 parts of sodium nitrite according to the mass ratio, stirring, filtering out solid particles by using a screen, and airing to obtain a composite oil film coated low-freezing-point material;
C. then mixing and stirring 50 parts of asphalt, 0.6-1.2 parts of emulsifier, 49 parts of water and 0.01-0.02 part of dilute hydrochloric acid in mass ratio to obtain emulsified asphalt;
D. and C, fully mixing the composite oil film coated low-freezing-point material obtained in the step B and the emulsified asphalt obtained in the step C according to the mass ratio to obtain the composite oil film coated low-freezing-point material spraying liquid for the asphalt pavement.
2. The preparation method of the composite oil film coated low-freezing-point material spraying liquid for the asphalt pavement according to claim 1, wherein the temperature for preparing the coating liquid of the low-freezing-point material in the step A is 50-60 ℃, and the stirring time is 20-30 min.
3. The preparation method of the composite oil film coated low freezing point material spray liquid for the asphalt pavement according to claim 1, wherein the temperature for preparing the composite oil film coated low freezing point material in the step B is 50-60 ℃, and the stirring time is 8-15 min.
4. The method for preparing the composite oil film coated low freezing point material spraying liquid for asphalt pavements as claimed in claim 1, wherein in the step C, when the emulsified asphalt is prepared, the temperature of the added water is 60-70 ℃, and the preparation temperature of the emulsified asphalt is 120-135 ℃.
5. The method for preparing the composite oil film coated low freezing point material spraying liquid for the asphalt pavement according to claim 1, wherein the asphalt is one of coal tar asphalt, petroleum asphalt or natural asphalt.
6. The preparation method of the composite oil film coated low freezing point material spraying liquid for the asphalt pavement according to claim 1, wherein the dilute hydrochloric acid is hydrochloric acid with a concentration of 2.5-3 mol/L.
7. The method for preparing the composite oil film coated low freezing point material spraying liquid for the asphalt pavement according to claim 1, wherein the emulsifier is a cationic fast-cracking and fast-setting asphalt emulsifier BH-K.
8. The method for preparing the composite oil film coated low-freezing-point material spraying liquid for the asphalt pavement according to claim 1, wherein the solvent kerosene is one of D80 solvent oil, D60 solvent oil and D40 solvent oil.
9. A composite oil film coated low freezing point material spraying liquid for asphalt pavements prepared by the method of any one of claims 1 to 8.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN202110099820.0A CN112898902B (en) | 2021-01-25 | 2021-01-25 | Composite oil film coated low-freezing-point material spraying liquid for asphalt pavement and preparation method thereof |
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| CN202110099820.0A CN112898902B (en) | 2021-01-25 | 2021-01-25 | Composite oil film coated low-freezing-point material spraying liquid for asphalt pavement and preparation method thereof |
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| CN112898902B true CN112898902B (en) | 2022-02-01 |
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| CN104877635B (en) * | 2015-06-02 | 2017-08-29 | 长安大学 | A kind of emulsified asphalt environmentally friendly composite snow-melting agent and preparation method thereof and application method |
| CN104987854B (en) * | 2015-06-19 | 2017-06-23 | 哈尔滨工业大学 | It is a kind of to be applied to the preparation method that extremely frigid zones improve the filler of ice bituminous paving cementation |
| CN105694812A (en) * | 2016-01-18 | 2016-06-22 | 广西大学 | Bituminous pavement deicing roll coating material based on non-freezing-point principle and preparation method thereof |
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