CN116023793A - High-strength environment-friendly composite asphalt mixture - Google Patents
High-strength environment-friendly composite asphalt mixture Download PDFInfo
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- CN116023793A CN116023793A CN202211735279.9A CN202211735279A CN116023793A CN 116023793 A CN116023793 A CN 116023793A CN 202211735279 A CN202211735279 A CN 202211735279A CN 116023793 A CN116023793 A CN 116023793A
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- 239000010426 asphalt Substances 0.000 title claims abstract description 74
- 239000000203 mixture Substances 0.000 title claims abstract description 65
- 239000002131 composite material Substances 0.000 title claims abstract description 32
- 239000002699 waste material Substances 0.000 claims abstract description 27
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 24
- 239000004372 Polyvinyl alcohol Substances 0.000 claims abstract description 22
- 239000007822 coupling agent Substances 0.000 claims abstract description 22
- 229920002451 polyvinyl alcohol Polymers 0.000 claims abstract description 22
- 150000008064 anhydrides Chemical class 0.000 claims abstract description 19
- 239000011159 matrix material Substances 0.000 claims abstract description 19
- 239000005995 Aluminium silicate Substances 0.000 claims abstract description 14
- 229910021536 Zeolite Inorganic materials 0.000 claims abstract description 14
- 235000012211 aluminium silicate Nutrition 0.000 claims abstract description 14
- 239000004927 clay Substances 0.000 claims abstract description 14
- HNPSIPDUKPIQMN-UHFFFAOYSA-N dioxosilane;oxo(oxoalumanyloxy)alumane Chemical compound O=[Si]=O.O=[Al]O[Al]=O HNPSIPDUKPIQMN-UHFFFAOYSA-N 0.000 claims abstract description 14
- NLYAJNPCOHFWQQ-UHFFFAOYSA-N kaolin Chemical compound O.O.O=[Al]O[Si](=O)O[Si](=O)O[Al]=O NLYAJNPCOHFWQQ-UHFFFAOYSA-N 0.000 claims abstract description 14
- 239000000843 powder Substances 0.000 claims abstract description 14
- 239000010457 zeolite Substances 0.000 claims abstract description 14
- 229910021538 borax Inorganic materials 0.000 claims abstract description 13
- 239000002994 raw material Substances 0.000 claims abstract description 13
- 239000004328 sodium tetraborate Substances 0.000 claims abstract description 13
- 235000010339 sodium tetraborate Nutrition 0.000 claims abstract description 13
- 238000004519 manufacturing process Methods 0.000 claims abstract description 6
- 238000003756 stirring Methods 0.000 claims description 48
- 238000010438 heat treatment Methods 0.000 claims description 26
- 239000011259 mixed solution Substances 0.000 claims description 18
- 239000007788 liquid Substances 0.000 claims description 14
- WFDIJRYMOXRFFG-UHFFFAOYSA-N Acetic anhydride Chemical group CC(=O)OC(C)=O WFDIJRYMOXRFFG-UHFFFAOYSA-N 0.000 claims description 12
- 238000002156 mixing Methods 0.000 claims description 9
- 239000000463 material Substances 0.000 claims description 8
- 239000000243 solution Substances 0.000 claims description 7
- 239000002904 solvent Substances 0.000 claims description 7
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 6
- 238000007599 discharging Methods 0.000 claims description 6
- 230000003472 neutralizing effect Effects 0.000 claims description 6
- 238000004513 sizing Methods 0.000 claims description 6
- 238000000034 method Methods 0.000 claims description 5
- 239000006087 Silane Coupling Agent Substances 0.000 claims description 4
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 claims description 4
- 239000000945 filler Substances 0.000 claims description 4
- FPYJFEHAWHCUMM-UHFFFAOYSA-N maleic anhydride Chemical compound O=C1OC(=O)C=C1 FPYJFEHAWHCUMM-UHFFFAOYSA-N 0.000 claims description 4
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims description 3
- 229920002488 Hemicellulose Polymers 0.000 claims description 3
- 239000003513 alkali Substances 0.000 claims description 3
- 239000001913 cellulose Substances 0.000 claims description 3
- 229920002678 cellulose Polymers 0.000 claims description 3
- 239000003795 chemical substances by application Substances 0.000 claims description 3
- 229920005610 lignin Polymers 0.000 claims description 3
- 239000003755 preservative agent Substances 0.000 claims description 3
- 230000002335 preservative effect Effects 0.000 claims description 3
- 150000003839 salts Chemical class 0.000 claims description 3
- 239000000377 silicon dioxide Substances 0.000 claims description 3
- 238000006116 polymerization reaction Methods 0.000 claims description 2
- 238000004537 pulping Methods 0.000 claims description 2
- 239000002351 wastewater Substances 0.000 claims description 2
- 230000007613 environmental effect Effects 0.000 abstract description 5
- 238000002360 preparation method Methods 0.000 description 12
- 238000010276 construction Methods 0.000 description 6
- 230000008901 benefit Effects 0.000 description 3
- 239000004568 cement Substances 0.000 description 3
- 235000019738 Limestone Nutrition 0.000 description 2
- 239000011230 binding agent Substances 0.000 description 2
- 239000004566 building material Substances 0.000 description 2
- 230000007797 corrosion Effects 0.000 description 2
- 238000005260 corrosion Methods 0.000 description 2
- 238000011161 development Methods 0.000 description 2
- 201000010099 disease Diseases 0.000 description 2
- 208000037265 diseases, disorders, signs and symptoms Diseases 0.000 description 2
- 239000010438 granite Substances 0.000 description 2
- 125000001449 isopropyl group Chemical group [H]C([H])([H])C([H])(*)C([H])([H])[H] 0.000 description 2
- 239000006028 limestone Substances 0.000 description 2
- 231100000053 low toxicity Toxicity 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 238000012360 testing method Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 150000001720 carbohydrates Chemical class 0.000 description 1
- 239000004567 concrete Substances 0.000 description 1
- 238000005336 cracking Methods 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000004821 distillation Methods 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 239000000835 fiber Substances 0.000 description 1
- 238000009440 infrastructure construction Methods 0.000 description 1
- 239000004615 ingredient Substances 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 235000012239 silicon dioxide Nutrition 0.000 description 1
- APSBXTVYXVQYAB-UHFFFAOYSA-M sodium docusate Chemical group [Na+].CCCCC(CC)COC(=O)CC(S([O-])(=O)=O)C(=O)OCC(CC)CCCC APSBXTVYXVQYAB-UHFFFAOYSA-M 0.000 description 1
- 125000004079 stearyl group Chemical group [H]C([*])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])[H] 0.000 description 1
- 239000002344 surface layer Substances 0.000 description 1
- 238000010998 test method Methods 0.000 description 1
- 239000002562 thickening agent Substances 0.000 description 1
- 239000011800 void material Substances 0.000 description 1
Classifications
-
- 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
Landscapes
- Compositions Of Macromolecular Compounds (AREA)
Abstract
The invention discloses a high-strength environment-friendly composite asphalt mixture, which comprises the following raw materials in parts by weight: 50 to 100 parts of matrix asphalt, 10 to 20 parts of black liquor, 10 to 20 parts of white water, 10 to 30 parts of waste mash, 0.5 to 2 parts of anhydride, 3 to 5 parts of polyvinyl alcohol, 1 to 3 parts of activated clay, 1 to 3 parts of kaolin, 1 to 3 parts of zeolite powder, 1 to 3 parts of borax and 0.2 to 1 part of coupling agent. The product of the invention has lower production cost, environmental protection and good stability, and can obviously improve the performance of asphalt mixture products.
Description
Technical Field
The invention relates to the field of building materials, in particular to a high-strength environment-friendly composite asphalt mixture.
Background
Along with the development of highway construction in China, higher requirements are put forward on the road surface layer along with construction conditions in the construction process, and in particular, special road sections such as long and large longitudinal slope roads, urban rapid public transportation dry roads, port and harbor special roads, heavy-load bridge deck pavement, airport runways and the like are involved, the road sections have large construction requirements in recent years, the construction requirements of the engineering cannot be met by adopting common asphalt cement and mixture, and the road surface is easy to generate rut diseases, and the rut diseases are counted to become the most serious early damage form of the asphalt road surface.
Black liquor and white water are one of the important pollution sources for environmental pollution in the light industry papermaking industry. The waste mash is the residual liquid discharged after the mature mash is distilled and extracted in a crude distillation tower in the alcohol production process. The waste liquid contains a large amount of fillers, such as residual alkali, silicon dioxide, lignin, hemicellulose, sizing material, saccharides and salts in the black liquid; the white water contains cellulose, filler, sizing material, wet strength agent, preservative and the like; the waste mash contains organic matters and P 2 O 5 、K 2 O, etc. The direct discharge of these waste liquids not only severely pollutes the water source, but also causes a great deal of resource waste.
The present invention has been made in view of the above problems, and the following patents are more relevant to the present invention, which can be used as background art of the present invention and reference is made thereto.
In publication No.: CN105565709a discloses a high-strength asphalt mixture and a preparation method thereof, the asphalt comprises the following components: the main preparation method comprises the steps of crushing limestone and alkaline granite, heating, mixing with a pre-mixed and heated asphalt binder, and fully reacting. The asphalt mixture has the characteristics of good toughness, high strength, water resistance, corrosion resistance, low toxicity and environmental protection, and can effectively prolong the service life of asphalt pavement.
In publication No.: CN114276049a discloses an environment-friendly asphalt cement composite material, which comprises the following components in parts by weight: 1-5 parts of solvent asphalt, 85-95 parts of aggregate and 0.1-6 parts of red mud. The pavement material disclosed by the invention has the convenience and environmental friendliness of cold-mixing and cold-paving asphalt mixture construction, and also has the high strength, high modulus and durability of cement concrete, is an environment-friendly pavement new material with hardness and softness, can obviously improve the rutting resistance and durability of a pavement, can be used for building new roads, can also be used for maintenance engineering, and has a wide application prospect.
In publication No.: CN105565709a discloses a high-strength asphalt mixture and a preparation method thereof, the asphalt comprises the following components: the main preparation method comprises the steps of crushing limestone and alkaline granite, heating, mixing with a pre-mixed and heated asphalt binder, and fully reacting. The asphalt mixture has the characteristics of good toughness, high strength, water resistance, corrosion resistance, low toxicity and environmental protection, and can effectively prolong the service life of asphalt pavement.
The above patents are all inventions for preparing asphalt mixture, mainly adopting waste rubber as mixture, but none of them has been found to prepare asphalt mixture material by using waste liquid, nor has the existing patents and documents been found to adopt the ingredients and process preparation methods described in the application of the present invention.
Disclosure of Invention
The invention aims to provide a high-strength environment-friendly composite asphalt mixture.
The technical scheme of the invention comprises the following raw materials in parts by weight: 50 to 100 parts of matrix asphalt, 10 to 20 parts of black liquor, 10 to 20 parts of white water, 10 to 30 parts of waste mash, 0.5 to 2 parts of anhydride, 3 to 5 parts of polyvinyl alcohol, 1 to 3 parts of activated clay, 1 to 3 parts of kaolin, 1 to 3 parts of zeolite powder, 1 to 3 parts of borax and 0.2 to 1 part of coupling agent.
Preferably, the black liquor is from a papermaking pulping section and contains residual alkali, silica, lignin, hemicellulose, sizing material, sugar and salts.
Preferably, the white water is white water which is not treated by a fiber recovery machine or a cylinder mould thickener in a white water pool under a wire of a wire section in a papermaking process.
Preferably, the white water contains cellulose, filler, sizing, wet strength agent, and preservative.
Preferably, the waste mash is obtained by treating alcohol production wastewater from sugar refinery at 110-150 ℃ and under 0.2-0.8 MPa for 1-2 h.
Preferably, the waste mash contains organic matters and P 2 O 5 、K 2 O。
Preferably, the anhydride is acetic anhydride or maleic anhydride.
Preferably, the average degree of polymerization of the polyvinyl alcohol is in the range of 1500 to 2000.
Preferably, the coupling agent is a silane coupling agent KH560 or a titanate coupling agent.
The preparation method of the high-strength environment-friendly composite asphalt mixture comprises the following steps:
(1) Firstly, mixing black liquor, white water and waste mash, stirring and neutralizing, and enabling the pH value to be 7.5-8.5;
(2) Adding anhydride and borax into the mixed solution obtained in the step (1), stirring and heating to 90-100 ℃, and preserving heat for 20-40 min for later use;
(3) Polyvinyl alcohol is used as solvent, and the solid-to-liquid ratio is 1: stirring and dissolving for 30-60 min at the temperature of 40-60 ℃ to 70 ℃ and preserving heat for later use;
(4) Adding the polyvinyl alcohol solution obtained in the step (3) into the mixed solution obtained in the step (2), heating to 70-80 ℃, and stirring for 20-40 min for later use;
(5) Concentrating the mixed solution obtained in the step (4) until the mass percentage concentration is 25% -35%, respectively adding activated clay, kaolin and zeolite powder, and stirring uniformly for later use;
(6) Adding a coupling agent into the mixture obtained in the step (5), heating to 75-90 ℃, and stirring for 15-30 min for later use;
(7) Heating matrix asphalt to 165-185 ℃, stirring for 10-20 min, and preserving heat for later use;
(8) Adding the mixture obtained in the step (6) into the matrix asphalt obtained in the step (7), and stirring for 10-30 min at the temperature of 165-185 ℃ and the rotating speed of 100-300 r/min;
(9) And (3) discharging the mixture in the step (8), and standing for 2-4 hours at normal temperature to obtain the high-strength environment-friendly composite asphalt mixture.
The beneficial effects of the invention are as follows:
(1) the mixture used by the composite asphalt mainly comes from waste liquid, so that the waste liquid is effectively utilized to prepare a novel building material, the composite asphalt has better environmental benefit and social benefit, the product cost advantage is obvious, the production and the processing are easy, and the idea is provided for the development of local industry;
(2) the composite asphalt mixture has rich raw material resources, including waste liquid, polyvinyl alcohol, activated clay, kaolin and zeolite powder, which are all rich in sources, low in cost and environment-friendly in relevant enterprises, so that the production and processing cost of the raw materials can be met;
(3) according to the preparation method of the asphalt mixture, various raw materials are sequentially added when the raw materials are mixed, and after the raw materials are added, the raw materials are sufficiently heated and stirred, so that the uniformity of the mixture is improved, the air content in the mixture is reduced, and the performance index is improved;
(4) as can be seen from the results in Table 1, the asphalt mixture obtained by the preparation method provided by the invention has better performance, higher strength after paving, less possibility of rutting and cracking, and can be used in infrastructure construction of special road sections.
Detailed Description
The following describes the embodiments of the present invention further with reference to examples. For more clearly illustrating the technical solution of the present invention, but not limiting the scope of the present invention.
Example 1
The high-strength environment-friendly composite asphalt mixture comprises the following raw materials in parts by weight: 50 parts of matrix asphalt, 10 parts of black liquor, 10 parts of white water, 10 parts of waste mash, 0.5 part of anhydride, 3 parts of polyvinyl alcohol, 1 part of activated clay, 1 part of kaolin, 1 part of zeolite powder, 1 part of borax and 0.2 part of coupling agent;
the anhydride is acetic anhydride;
the coupling agent is silane coupling agent KH560;
the preparation method of the high-strength environment-friendly composite asphalt mixture comprises the following steps:
(1) Firstly, mixing black liquor, white water and waste mash, stirring and neutralizing, and enabling the pH value to be 7.5;
(2) Adding anhydride and borax into the mixed solution obtained in the step (1), stirring and heating to 90 ℃, and preserving heat for 40min for later use;
(3) Polyvinyl alcohol is used as solvent, and the solid-to-liquid ratio is 1: stirring and dissolving at 60 ℃ for 30min, and preserving heat for later use;
(4) Adding the polyvinyl alcohol solution obtained in the step (3) into the mixed solution obtained in the step (2), heating to 70 ℃, and stirring for 40min for later use;
(5) Concentrating the mixed solution obtained in the step (4) until the mass percentage concentration is 25%, respectively adding activated clay, kaolin and zeolite powder, and stirring uniformly for later use;
(6) Adding a coupling agent into the mixture obtained in the step (5), heating to 75 ℃, and stirring for 30min for later use;
(7) Heating matrix asphalt to 165 ℃, stirring for 20min, and preserving heat for later use;
(8) Adding the mixture obtained in the step (6) into the matrix asphalt obtained in the step (7) and stirring for 30min at the temperature of 165 ℃ and the rotating speed of 100 r/min;
(9) And (3) discharging the mixture in the step (8), and standing for 2 hours at normal temperature to obtain the high-strength environment-friendly composite asphalt mixture.
Example 2
The high-strength environment-friendly composite asphalt mixture comprises the following raw materials in parts by weight: 100 parts of matrix asphalt, 20 parts of black liquor, 20 parts of white water, 30 parts of waste mash, 2 parts of anhydride, 5 parts of polyvinyl alcohol, 3 parts of activated clay, 3 parts of kaolin, 3 parts of zeolite powder, 3 parts of borax and 1 part of coupling agent;
the anhydride is acetic anhydride;
the coupling agent is silane coupling agent KH560;
the preparation method of the high-strength environment-friendly composite asphalt mixture comprises the following steps:
(1) Firstly, mixing black liquor, white water and waste mash, stirring and neutralizing, and enabling the pH value to be 8.5;
(2) Adding anhydride and borax into the mixed solution obtained in the step (1), stirring and heating to 100 ℃, and preserving heat for 20min for later use;
(3) Polyvinyl alcohol is used as solvent, and the solid-to-liquid ratio is 1:60, stirring and dissolving for 30min at 70 ℃, and preserving heat for later use;
(4) Adding the polyvinyl alcohol solution obtained in the step (3) into the mixed solution obtained in the step (2), heating to 80 ℃, and stirring for 20min for later use;
(5) Concentrating the mixed solution obtained in the step (4) until the mass percentage concentration is 35%, respectively adding activated clay, kaolin and zeolite powder, and stirring uniformly for later use;
(6) Adding a coupling agent into the mixture obtained in the step (5), heating to 90 ℃, and stirring for 15min for later use;
(7) Heating matrix asphalt to 185 ℃, stirring for 10min, and preserving heat for later use;
(8) Adding the mixture obtained in the step (6) into the matrix asphalt obtained in the step (7) and stirring for 10min at the temperature of 185 ℃ and the rotating speed of 300 r/min;
(9) And (3) discharging the mixture in the step (8), and standing for 4 hours at normal temperature to obtain the high-strength environment-friendly composite asphalt mixture.
Example 3
The high-strength environment-friendly composite asphalt mixture comprises the following raw materials in parts by weight: 80 parts of matrix asphalt, 15 parts of black liquor, 15 parts of white water, 20 parts of waste mash, 1.5 parts of anhydride, 4 parts of polyvinyl alcohol, 2 parts of activated clay, 2 parts of kaolin, 2 parts of zeolite powder, 2 parts of borax and 0.5 part of coupling agent;
the anhydride is maleic anhydride;
the coupling agent is isopropyl tri (stearyl) titanate;
the preparation method of the high-strength environment-friendly composite asphalt mixture comprises the following steps:
(1) Firstly, mixing black liquor, white water and waste mash, stirring and neutralizing, and enabling the pH value to be 8.0;
(2) Adding anhydride and borax into the mixed solution obtained in the step (1), stirring and heating to 95 ℃, and preserving heat for 30min for later use;
(3) Polyvinyl alcohol is used as solvent, and the solid-to-liquid ratio is 1:50, stirring and dissolving for 40min at 65 ℃, and preserving heat for later use;
(4) Adding the polyvinyl alcohol solution obtained in the step (3) into the mixed solution obtained in the step (2), heating to 75 ℃, and stirring for 30min for later use;
(5) Concentrating the mixed solution obtained in the step (4) until the mass percentage concentration is 30%, respectively adding activated clay, kaolin and zeolite powder, and stirring uniformly for later use;
(6) Adding a coupling agent into the mixture obtained in the step (5), heating to 85 ℃, and stirring for 25min for later use;
(7) Heating matrix asphalt to 175 ℃, stirring for 15min, and preserving heat for later use;
(8) Adding the mixture obtained in the step (6) into the matrix asphalt obtained in the step (7) and stirring for 20min at the temperature of 175 ℃ and the rotating speed of 200 r/min;
(9) And (3) discharging the mixture in the step (8), and standing for 3 hours at normal temperature to obtain the high-strength environment-friendly composite asphalt mixture.
Example 4
The high-strength environment-friendly composite asphalt mixture comprises the following raw materials in parts by weight: 60 parts of matrix asphalt, 12 parts of black liquor, 10 parts of white water, 15 parts of waste mash, 0.8 part of anhydride, 3 parts of polyvinyl alcohol, 1 part of activated clay, 3 parts of kaolin, 1 part of zeolite powder, 1 part of borax and 0.3 part of coupling agent;
the anhydride is maleic anhydride;
the coupling agent is titanate coupling agent isopropyl tri (dioctyl pyrophosphoryloxy);
the preparation method of the high-strength environment-friendly composite asphalt mixture comprises the following steps:
(1) Firstly, mixing black liquor, white water and waste mash, stirring and neutralizing, and enabling the pH value to be 8.0;
(2) Adding anhydride and borax into the mixed solution obtained in the step (1), stirring and heating to 90 ℃, and preserving heat for 40min for later use;
(3) Polyvinyl alcohol is used as solvent, and the solid-to-liquid ratio is 1: stirring and dissolving for 30min at the temperature of 55 and 70 ℃, and preserving heat for later use;
(4) Adding the polyvinyl alcohol solution obtained in the step (3) into the mixed solution obtained in the step (2), heating to 70 ℃, and stirring for 20min for later use;
(5) Concentrating the mixed solution obtained in the step (4) until the mass percentage concentration is 25%, respectively adding activated clay, kaolin and zeolite powder, and stirring uniformly for later use;
(6) Adding a coupling agent into the mixture obtained in the step (5), heating to 75 ℃, and stirring for 15min for later use;
(7) Heating matrix asphalt to 185 ℃, stirring for 20min, and preserving heat for later use;
(8) Adding the mixture obtained in the step (6) into the matrix asphalt obtained in the step (7) and stirring for 10min at the temperature of 185 ℃ and the rotating speed of 100 r/min;
(9) And (3) discharging the mixture in the step (8), and standing for 3 hours at normal temperature to obtain the high-strength environment-friendly composite asphalt mixture.
Examples test detection:
the asphalt mixtures prepared in examples 1 to 4 were tested for stability, flow value, void fraction, saturation, residual stability, freeze-thaw-split tensile strength ratio, rutting stability, etc. according to the method described in test procedure for asphalt and asphalt mixtures for highway engineering (standard number: JTG E20-2011), and the results were compared according to the test results, as shown in Table 1.
Table 1 comparison of the properties of asphalt mixtures of the examples
Claims (8)
1. The high-strength environment-friendly composite asphalt mixture is characterized by comprising the following raw materials in parts by weight: 50 to 100 parts of matrix asphalt, 10 to 20 parts of black liquor, 10 to 20 parts of white water, 10 to 30 parts of waste mash, 0.5 to 2 parts of anhydride, 3 to 5 parts of polyvinyl alcohol, 1 to 3 parts of activated clay, 1 to 3 parts of kaolin, 1 to 3 parts of zeolite powder, 1 to 3 parts of borax and 0.2 to 1 part of coupling agent.
2. The high-strength environment-friendly composite asphalt mixture according to claim 1, wherein the black liquor is from a papermaking pulping section and contains residual alkali, silica, lignin, hemicellulose, sizing material, sugar and salt.
3. The high strength environment friendly composite asphalt mixture according to claim 1, wherein the white water is untreated white water from a papermaking section, and contains cellulose, filler, sizing material, wet strength agent and preservative.
4. The high-strength environment-friendly composite asphalt mixture as defined in claim 1, wherein the waste mash is waste mash obtained by treating alcohol production wastewater from sugar refinery at high temperature and high pressure, and contains organic matters and P 2 O 5 、K 2 O。
5. The high-strength environment-friendly composite asphalt mixture according to claim 1, wherein the anhydride is acetic anhydride or maleic anhydride.
6. The high-strength environment-friendly composite asphalt mixture according to claim 1, wherein the average polymerization degree of the polyvinyl alcohol is in the range of 1500-2000.
7. The high-strength environment-friendly composite asphalt mixture according to claim 1, wherein the coupling agent is a silane coupling agent or a titanate coupling agent.
8. The method for preparing the high-strength environment-friendly composite asphalt mixture according to claim 1, which is characterized by comprising the following steps:
(1) Firstly, mixing black liquor, white water and waste mash, stirring and neutralizing, and enabling the pH value to be 7.5-8.5;
(2) Adding anhydride and borax into the mixed solution obtained in the step (1), stirring and heating to 90-100 ℃, and preserving heat for 20-40 min for later use;
(3) Polyvinyl alcohol is used as solvent, and the solid-to-liquid ratio is 1: stirring and dissolving for 30-60 min at the temperature of 40-60 ℃ to 70 ℃ and preserving heat for later use;
(4) Adding the polyvinyl alcohol solution obtained in the step (3) into the mixed solution obtained in the step (2), heating to 70-80 ℃, and stirring for 20-40 min for later use;
(5) Concentrating the mixed solution obtained in the step (4) until the mass percentage concentration is 25% -35%, respectively adding activated clay, kaolin and zeolite powder, and stirring uniformly for later use;
(6) Adding a coupling agent into the mixture obtained in the step (5), heating to 75-90 ℃, and stirring for 15-30 min for later use;
(7) Heating matrix asphalt to 165-185 ℃, stirring for 10-20 min, and preserving heat for later use;
(8) Adding the mixture obtained in the step (6) into the matrix asphalt obtained in the step (7), and stirring for 10-30 min at the temperature of 165-185 ℃ and the rotating speed of 100-300 r/min;
(9) And (3) discharging the mixture in the step (8), and standing for 2-4 hours at normal temperature to obtain the high-strength environment-friendly composite asphalt mixture.
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| CN202211735279.9A CN116023793A (en) | 2022-12-30 | 2022-12-30 | High-strength environment-friendly composite asphalt mixture |
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| CN202211735279.9A CN116023793A (en) | 2022-12-30 | 2022-12-30 | High-strength environment-friendly composite asphalt mixture |
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| CN116023793A true CN116023793A (en) | 2023-04-28 |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1237667A (en) * | 1999-01-14 | 1999-12-08 | 上官志强 | Pulping process capable of directly using black liquor as asphalt emulsifying agent |
| CN102070908A (en) * | 2009-11-25 | 2011-05-25 | 河南农业大学 | Straw ethanol fermentation residue-containing modified asphalt composite material for waterproof coiled material and preparation method thereof |
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