CN116693233B - Environment-friendly asphalt mixture and preparation method thereof - Google Patents
Environment-friendly asphalt mixture and preparation method thereof Download PDFInfo
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- CN116693233B CN116693233B CN202310560669.5A CN202310560669A CN116693233B CN 116693233 B CN116693233 B CN 116693233B CN 202310560669 A CN202310560669 A CN 202310560669A CN 116693233 B CN116693233 B CN 116693233B
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- 239000010426 asphalt Substances 0.000 title claims abstract description 136
- 239000000203 mixture Substances 0.000 title claims abstract description 64
- 238000002360 preparation method Methods 0.000 title claims abstract description 32
- 239000004094 surface-active agent Substances 0.000 claims abstract description 49
- 239000003963 antioxidant agent Substances 0.000 claims abstract description 48
- 230000003078 antioxidant effect Effects 0.000 claims abstract description 48
- 239000003350 kerosene Substances 0.000 claims abstract description 32
- 239000002904 solvent Substances 0.000 claims abstract description 32
- 239000002131 composite material Substances 0.000 claims abstract description 18
- 239000000945 filler Substances 0.000 claims abstract description 15
- 238000003756 stirring Methods 0.000 claims description 171
- 238000002156 mixing Methods 0.000 claims description 108
- 239000000843 powder Substances 0.000 claims description 57
- -1 methyl phenyl vinyl Chemical group 0.000 claims description 46
- 229920002379 silicone rubber Polymers 0.000 claims description 45
- 239000000463 material Substances 0.000 claims description 39
- GVGUFUZHNYFZLC-UHFFFAOYSA-N dodecyl benzenesulfonate;sodium Chemical compound [Na].CCCCCCCCCCCCOS(=O)(=O)C1=CC=CC=C1 GVGUFUZHNYFZLC-UHFFFAOYSA-N 0.000 claims description 31
- 229940080264 sodium dodecylbenzenesulfonate Drugs 0.000 claims description 31
- 239000004945 silicone rubber Substances 0.000 claims description 29
- 238000010438 heat treatment Methods 0.000 claims description 28
- 238000004321 preservation Methods 0.000 claims description 24
- 125000001997 phenyl group Chemical group [H]C1=C([H])C([H])=C(*)C([H])=C1[H] 0.000 claims description 22
- 238000001816 cooling Methods 0.000 claims description 20
- 239000003208 petroleum Substances 0.000 claims description 17
- 229940117986 sulfobetaine Drugs 0.000 claims description 17
- 239000004944 Liquid Silicone Rubber Substances 0.000 claims description 16
- JKIJEFPNVSHHEI-UHFFFAOYSA-N Phenol, 2,4-bis(1,1-dimethylethyl)-, phosphite (3:1) Chemical compound CC(C)(C)C1=CC(C(C)(C)C)=CC=C1OP(OC=1C(=CC(=CC=1)C(C)(C)C)C(C)(C)C)OC1=CC=C(C(C)(C)C)C=C1C(C)(C)C JKIJEFPNVSHHEI-UHFFFAOYSA-N 0.000 claims description 15
- BGYHLZZASRKEJE-UHFFFAOYSA-N [3-[3-(3,5-ditert-butyl-4-hydroxyphenyl)propanoyloxy]-2,2-bis[3-(3,5-ditert-butyl-4-hydroxyphenyl)propanoyloxymethyl]propyl] 3-(3,5-ditert-butyl-4-hydroxyphenyl)propanoate Chemical compound CC(C)(C)C1=C(O)C(C(C)(C)C)=CC(CCC(=O)OCC(COC(=O)CCC=2C=C(C(O)=C(C=2)C(C)(C)C)C(C)(C)C)(COC(=O)CCC=2C=C(C(O)=C(C=2)C(C)(C)C)C(C)(C)C)COC(=O)CCC=2C=C(C(O)=C(C=2)C(C)(C)C)C(C)(C)C)=C1 BGYHLZZASRKEJE-UHFFFAOYSA-N 0.000 claims description 15
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 15
- 239000004927 clay Substances 0.000 claims description 14
- 239000000835 fiber Substances 0.000 claims description 14
- 229910052900 illite Inorganic materials 0.000 claims description 14
- 229920005610 lignin Polymers 0.000 claims description 14
- VGIBGUSAECPPNB-UHFFFAOYSA-L nonaaluminum;magnesium;tripotassium;1,3-dioxido-2,4,5-trioxa-1,3-disilabicyclo[1.1.1]pentane;iron(2+);oxygen(2-);fluoride;hydroxide Chemical compound [OH-].[O-2].[O-2].[O-2].[O-2].[O-2].[F-].[Mg+2].[Al+3].[Al+3].[Al+3].[Al+3].[Al+3].[Al+3].[Al+3].[Al+3].[Al+3].[K+].[K+].[K+].[Fe+2].O1[Si]2([O-])O[Si]1([O-])O2.O1[Si]2([O-])O[Si]1([O-])O2.O1[Si]2([O-])O[Si]1([O-])O2.O1[Si]2([O-])O[Si]1([O-])O2.O1[Si]2([O-])O[Si]1([O-])O2.O1[Si]2([O-])O[Si]1([O-])O2.O1[Si]2([O-])O[Si]1([O-])O2 VGIBGUSAECPPNB-UHFFFAOYSA-L 0.000 claims description 14
- 239000002893 slag Substances 0.000 claims description 14
- 239000003431 cross linking reagent Substances 0.000 claims description 11
- VEFXTGTZJOWDOF-UHFFFAOYSA-N benzene;hydrate Chemical compound O.C1=CC=CC=C1 VEFXTGTZJOWDOF-UHFFFAOYSA-N 0.000 claims description 6
- 239000002202 Polyethylene glycol Substances 0.000 claims description 5
- 229920001223 polyethylene glycol Polymers 0.000 claims description 5
- LFQCEHFDDXELDD-UHFFFAOYSA-N tetramethyl orthosilicate Chemical compound CO[Si](OC)(OC)OC LFQCEHFDDXELDD-UHFFFAOYSA-N 0.000 claims description 5
- XOOUIPVCVHRTMJ-UHFFFAOYSA-L zinc stearate Chemical compound [Zn+2].CCCCCCCCCCCCCCCCCC([O-])=O.CCCCCCCCCCCCCCCCCC([O-])=O XOOUIPVCVHRTMJ-UHFFFAOYSA-L 0.000 claims description 5
- 239000011387 rubberized asphalt concrete Substances 0.000 claims description 3
- 239000002994 raw material Substances 0.000 claims description 2
- 238000000034 method Methods 0.000 claims 1
- 238000010276 construction Methods 0.000 abstract description 8
- 230000007613 environmental effect Effects 0.000 abstract 1
- 239000012615 aggregate Substances 0.000 description 58
- 150000001875 compounds Chemical class 0.000 description 25
- 238000005303 weighing Methods 0.000 description 19
- 230000000052 comparative effect Effects 0.000 description 18
- 230000032683 aging Effects 0.000 description 5
- KEAYESYHFKHZAL-OUBTZVSYSA-N sodium-24 Chemical group [24Na] KEAYESYHFKHZAL-OUBTZVSYSA-N 0.000 description 2
- 239000004575 stone Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000011230 binding agent Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 231100000206 health hazard Toxicity 0.000 description 1
- 229910052500 inorganic mineral Inorganic materials 0.000 description 1
- 239000011707 mineral Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000035939 shock Effects 0.000 description 1
- 239000000779 smoke Substances 0.000 description 1
- KEAYESYHFKHZAL-BJUDXGSMSA-N sodium-22 Chemical group [22Na] KEAYESYHFKHZAL-BJUDXGSMSA-N 0.000 description 1
- 230000002195 synergetic effect Effects 0.000 description 1
- 238000010998 test method Methods 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B26/00—Compositions of mortars, concrete or artificial stone, containing only organic binders, e.g. polymer or resin concrete
- C04B26/02—Macromolecular compounds
- C04B26/26—Bituminous materials, e.g. tar, pitch
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2111/00—Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
- C04B2111/00017—Aspects relating to the protection of the environment
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2111/00—Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
- C04B2111/00474—Uses not provided for elsewhere in C04B2111/00
- C04B2111/0075—Uses not provided for elsewhere in C04B2111/00 for road construction
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2111/00—Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
- C04B2111/20—Resistance against chemical, physical or biological attack
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2111/00—Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
- C04B2111/20—Resistance against chemical, physical or biological attack
- C04B2111/2038—Resistance against physical degradation
- C04B2111/2053—Earthquake- or hurricane-resistant materials
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2201/00—Mortars, concrete or artificial stone characterised by specific physical values
- C04B2201/50—Mortars, concrete or artificial stone characterised by specific physical values for the mechanical strength
-
- 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
Abstract
The invention discloses an environment-friendly asphalt mixture and a preparation method thereof, wherein the asphalt mixture comprises the following components in parts by weight: 8-14% of modified asphalt, 71-80% of aggregate, 8-12% of filler, 2-5% of kerosene solvent, 1-3% of surfactant and 0.5-1% of composite antioxidant; the preparation process is simple and easy to operate. The asphalt mixture of the invention has the environmental protection and convenience during construction, and also has the road performance and durability after construction.
Description
Technical Field
The invention relates to an environment-friendly asphalt mixture and a preparation method thereof, and belongs to the technical field of asphalt mixtures.
Background
The asphalt mixture is a composite material, and is formed by mixing mineral aggregate consisting of coarse aggregate, fine aggregate and filler in proper proportion with asphalt binder. The asphalt is divided into hot-mix asphalt and cold-mix asphalt according to the construction temperature, however, the hot-mix asphalt has high temperature requirement, large fuel consumption, asphalt smoke generated in the heating process, environmental pollution, personal health hazard and serious aging; the existing cold-mix asphalt mixture has poor road performance, and is difficult to compare with the performance of the hot-mix asphalt mixture.
Disclosure of Invention
Aiming at the problems in the prior art, the invention provides an environment-friendly asphalt mixture and a preparation method thereof, wherein the asphalt mixture has the environment-friendly property and convenience in construction and also has the road performance and durability after construction.
In order to achieve the above purpose, the present invention adopts the following technical scheme: the environment-friendly asphalt mixture consists of the following components in parts by weight: 8-14% of modified asphalt, 71-80% of aggregate, 8-12% of filler, 2-5% of kerosene solvent, 1-3% of surfactant and 0.5-1% of compound antioxidant.
Preferably, the modified asphalt is prepared from petroleum asphalt, liquid silicone rubber and a cross-linking agent raw material.
Wherein, the modified asphalt comprises the following components in parts by weight: 77-83 parts of petroleum asphalt, 13-16 parts of liquid silicone rubber and 0.3-0.5 part of cross-linking agent.
Preferably, the aggregate consists of gravel, slag, basalt powder, activated clay, illite powder, lignin fiber, sodium dodecyl benzene sulfonate and water;
wherein, the aggregate comprises the following components in parts by weight: 20-26 parts of gravel, 17-21 parts of slag, 4-8 parts of basalt powder, 3-6 parts of activated clay, 2-5 parts of illite powder, 6-11 parts of lignin fiber, 2-5 parts of sodium dodecyl benzene sulfonate and 18-24 parts of water.
Preferably, the filler is methyl phenyl vinyl silicone rubber powder with the phenyl content of 5-10%.
Preferably, the composite antioxidant consists of antioxidant 1010 and antioxidant 168.
Wherein the mass ratio of the antioxidant 1010 to the antioxidant 168 is 1:0.2-0.5.
Preferably, the surfactant consists of dodecyl dimethyl hydroxypropyl sulfobetaine and sodium dodecyl benzene sulfonate.
Wherein the mass ratio of the dodecyl dimethyl hydroxypropyl sulfobetaine to the sodium dodecyl benzene sulfonate is 1:1.5-2.
The cross-linking agent is one of polyethylene glycol, tetramethyl silicate and zinc stearate.
The invention also provides a preparation method of the environment-friendly asphalt mixture, which comprises the following steps:
(1) Preparation of modified asphalt: mixing and stirring petroleum asphalt and liquid silicone rubber according to parts by weight, wherein the stirring speed is 1200-1500 rpm, stirring and mixing for 15-20 min, heating to 85-90 ℃, adding a cross-linking agent according to parts by weight, and then carrying out heat preservation and stirring for 4-5 h to obtain modified asphalt;
(2) Preparing aggregate: mixing and stirring sodium dodecyl benzene sulfonate and water according to parts by weight, wherein the stirring speed is 900-1100 rpm, stirring and mixing for 10-15 min, heating to 60-65 ℃, adding basalt powder, activated clay, illite powder and lignin fiber according to parts by weight, stirring and mixing uniformly, maintaining heat preservation and slowing down stirring, adding gravel and slag according to parts by weight, stirring and mixing uniformly, stirring at a high speed of 1800-2000 rpm, and stirring for 3-5 min to obtain aggregate;
(3) Mixing and stirring the kerosene solvent and the surfactant according to the weight fraction, wherein the stirring speed is 1000-1200 rpm, stirring is carried out for 10-15 min, after heating to 85-90 ℃, adding the modified asphalt and the composite antioxidant according to the weight fraction, mixing and stirring uniformly, and maintaining the temperature for 25-30 min to obtain a material I;
(4) Adding a filler into the material I according to the weight fraction, mixing and stirring, maintaining the temperature and slowing down the stirring for 25-30 min, wherein the stirring speed is 600-800 rpm, and then cooling to 60-65 ℃ to obtain a material II;
(5) And adding aggregate into the material II according to the weight fraction, mixing and stirring, maintaining the temperature and stirring for 10-15 min, and cooling to room temperature to obtain the environment-friendly asphalt mixture.
The invention has the beneficial effects that: the environment-friendly asphalt mixture not only has the environment-friendly property and convenience in construction, but also has the road performance and durability after construction, and can obviously improve the high-temperature rut resistance and low-temperature fatigue resistance of the pavement; the petroleum asphalt is modified by the liquid silicone rubber, so that the compatibility of the asphalt, aggregate and filler is improved, and the mechanical property of the environment-friendly asphalt mixture is improved; according to the invention, 5-10% of methyl phenyl vinyl silicone rubber powder is used between asphalt and aggregate for filling, so that on one hand, the low temperature resistance of the environment-friendly asphalt mixture is improved, the pavement has good flexibility at low temperature, and on the other hand, the surfactant is cooperated, the compactness and elasticity of the environment-friendly asphalt mixture are improved, and the pavement has good shock resistance; according to the environment-friendly asphalt mixture, the modified asphalt, the aggregate and the filler are synergistic through the composite antioxidant, so that the ageing resistance of the environment-friendly asphalt mixture is effectively improved; the environment-friendly asphalt mixture has the advantages of proper component proportion, simple and easy operation of the preparation process and proper technological parameters, and effectively improves the mechanical properties of the asphalt mixture.
Detailed Description
The invention will now be more clearly and more fully described by way of the following specific examples, which are not intended to be limiting.
An environment-friendly asphalt mixture: consists of modified asphalt, aggregate, filler, kerosene solvent, surfactant and composite antioxidant. The modified asphalt is prepared from petroleum asphalt, liquid silicone rubber and a cross-linking agent, wherein the cross-linking agent is one of polyethylene glycol, tetramethyl silicate and zinc stearate; wherein the aggregate consists of gravel, slag, basalt powder, activated clay, illite powder, lignin fiber, sodium dodecyl benzene sulfonate and water; wherein, the filler is methyl phenyl vinyl silicone rubber powder with the phenyl content of 5-10 percent; the surfactant is formed by mixing dodecyl dimethyl hydroxypropyl sulfobetaine and sodium dodecyl benzene sulfonate according to the mass ratio of 1:1.5-2; the composite antioxidant is formed by mixing an antioxidant 1010 and an antioxidant 168 according to a mass ratio of 1:0.2-0.5.
The preparation method of the environment-friendly asphalt mixture comprises the following specific preparation steps:
(1) Preparation of modified asphalt: mixing and stirring petroleum asphalt and liquid silicone rubber according to parts by weight, wherein the stirring speed is 1200-1500 rpm, stirring and mixing for 15-20 min, heating to 85-90 ℃, adding a cross-linking agent according to parts by weight, and then carrying out heat preservation and stirring for 4-5 h to obtain modified asphalt;
(2) Preparing aggregate: mixing and stirring sodium dodecyl benzene sulfonate and water according to parts by weight, wherein the stirring speed is 900-1100 rpm, stirring and mixing for 10-15 min, heating to 60-65 ℃, adding basalt powder, activated clay, illite powder and lignin fiber according to parts by weight, stirring and mixing uniformly, maintaining heat preservation and slowing down stirring, adding gravel and slag according to parts by weight, stirring and mixing uniformly, stirring at a high speed of 1800-2000 rpm, and stirring for 3-5 min to obtain aggregate;
(3) Mixing and stirring the kerosene solvent and the surfactant according to the weight fraction, wherein the stirring speed is 1000-1200 rpm, stirring is carried out for 10-15 min, after heating to 85-90 ℃, adding the modified asphalt and the composite antioxidant according to the weight fraction, mixing and stirring uniformly, and maintaining the temperature for 25-30 min to obtain a material I;
(4) Adding a filler into the material I according to the weight fraction, mixing and stirring, maintaining the temperature and slowing down the stirring for 25-30 min, wherein the stirring speed is 600-800 rpm, and then cooling to 60-65 ℃ to obtain a material II;
(5) And adding aggregate into the material II according to the weight fraction, mixing and stirring, maintaining the temperature and stirring for 10-15 min, and cooling to room temperature to obtain the environment-friendly asphalt mixture.
Example 1
The environment-friendly asphalt mixture consists of the following components in parts by weight: 8% of modified asphalt, 80% of aggregate, 8% of methyl phenyl vinyl silicone rubber powder with 8% of phenyl content, 2% of kerosene solvent, 1.5% of surfactant and 0.5% of compound antioxidant, wherein the surfactant is formed by mixing dodecyl dimethyl hydroxypropyl sulfobetaine and sodium dodecyl benzene sulfonate according to the mass ratio of 1:1.5, and the compound antioxidant is formed by mixing antioxidant 1010 and antioxidant 168 according to the mass ratio of 1:0.2;
the preparation process comprises the following steps:
(1) Preparation of modified asphalt: mixing 77 parts of petroleum asphalt and 13 parts of liquid silicone rubber, stirring and mixing for 20min at a stirring speed of 1500rpm, heating to 85-90 ℃, adding 0.3 part of polyethylene glycol, and stirring for 4.5h after heat preservation to obtain modified asphalt;
(2) Preparing aggregate: mixing and stirring 2 parts of sodium dodecyl benzene sulfonate and 18 parts of water, wherein the stirring speed is 1100rpm, stirring and mixing for 12min, heating to 60-65 ℃, adding 4 parts of basalt stone powder, 3 parts of activated clay, 2 parts of illite powder and 6 parts of lignin fiber, stirring and mixing uniformly, maintaining heat preservation, slowing down stirring, stirring at 600rpm, adding 20 parts of gravel and 17 parts of slag, stirring and mixing uniformly, stirring at a high speed of 2000rpm, and stirring for 4min to obtain aggregate;
(3) Weighing a kerosene solvent, surfactant modified asphalt and a compound antioxidant according to the weight fraction, firstly mixing and stirring the kerosene solvent and the surfactant at 1100rpm for 10min, heating to 85-90 ℃, then adding the modified asphalt and the compound antioxidant, uniformly mixing and stirring, and maintaining the temperature for 25min to obtain a material I;
(4) Weighing methyl phenyl vinyl silicone rubber powder with the phenyl content of 8% according to the weight fraction, adding the methyl phenyl vinyl silicone rubber powder into a material I, mixing and stirring, maintaining the heat preservation, slowing down the stirring for 30min, cooling to 60-65 ℃ after the stirring speed is 800rpm, and obtaining a material II;
(5) And weighing aggregate according to the weight fraction, adding the aggregate into the material II, mixing and stirring, maintaining the temperature and stirring, stirring for 15min, and cooling to room temperature to obtain the environment-friendly asphalt mixture.
Example 2
The environment-friendly asphalt mixture consists of the following components in parts by weight: 10% of modified asphalt, 75% of aggregate, 9% of methyl phenyl vinyl silicone rubber powder with 10% of phenyl content, 3% of kerosene solvent, 2% of surfactant and 1% of compound antioxidant, wherein the surfactant is formed by mixing dodecyl dimethyl hydroxypropyl sulfobetaine and sodium dodecyl benzene sulfonate according to the mass ratio of 1:1.8, and the compound antioxidant is formed by mixing antioxidant 1010 and antioxidant 168 according to the mass ratio of 1:0.25;
the preparation process comprises the following steps:
(1) Preparation of modified asphalt: 78 parts of petroleum asphalt and 14 parts of liquid silicone rubber are mixed and stirred at 1200rpm for 15min, and after heating to 85-90 ℃, 0.5 part of zinc stearate is added, and then the mixture is subjected to heat preservation and stirring for 5h to obtain modified asphalt;
(2) Preparing aggregate: mixing 5 parts of sodium dodecyl benzene sulfonate and 24 parts of water, stirring and mixing at 1000rpm for 10min, heating to 60-65 ℃, adding 6 parts of basalt powder, 5 parts of activated clay, 3 parts of illite powder and 8 parts of lignin fiber, stirring and mixing uniformly, maintaining heat preservation and slowing down stirring, adding 23 parts of gravel and 20 parts of slag, stirring and mixing uniformly, stirring at 1850rpm at high speed, and stirring for 3min to obtain aggregate;
(3) Weighing a kerosene solvent, surfactant modified asphalt and a compound antioxidant according to the weight fraction, firstly mixing and stirring the kerosene solvent and the surfactant at the stirring speed of 1000rpm for 15min, heating to 85-90 ℃, then adding the modified asphalt and the compound antioxidant, uniformly mixing and stirring, and maintaining the temperature for 25min to obtain a material I;
(4) Weighing methyl phenyl vinyl silicone rubber powder with the phenyl content of 8% according to the weight fraction, adding the methyl phenyl vinyl silicone rubber powder into a material I, mixing and stirring, maintaining the heat preservation and slowing down the stirring for 28min, wherein the stirring speed is 600rpm, and then cooling to 60-65 ℃ to obtain a material II;
(5) And weighing aggregate according to the weight fraction, adding the aggregate into the material II, mixing and stirring, maintaining the temperature and stirring, stirring for 121min, and cooling to room temperature to obtain the environment-friendly asphalt mixture.
Example 3
The environment-friendly asphalt mixture consists of the following components in parts by weight: 14% of modified asphalt, 71% of aggregate, 8% of methyl phenyl vinyl silicone rubber powder with 5% of phenyl content, 5% of kerosene solvent, 1% of surfactant and 1% of compound antioxidant, wherein the surfactant is formed by mixing dodecyl dimethyl hydroxypropyl sulfobetaine and sodium dodecyl benzene sulfonate according to the mass ratio of 1:1.6, and the compound antioxidant is formed by mixing antioxidant 1010 and antioxidant 168 according to the mass ratio of 1:0.4;
the preparation process comprises the following steps:
(1) Preparation of modified asphalt: mixing 77 parts of petroleum asphalt and 16 parts of liquid silicone rubber, stirring and mixing for 15min at a stirring speed of 1500rpm, heating to 85-90 ℃, adding 0.4 part of zinc stearate, and then carrying out heat preservation and stirring for 4h to obtain modified asphalt;
(2) Preparing aggregate: mixing 3 parts of sodium dodecyl benzene sulfonate and 22 parts of water, stirring and mixing at the stirring speed of 1100rpm for 10min, heating to 60-65 ℃, adding 8 parts of basalt powder, 6 parts of activated clay, 5 parts of illite powder and 11 parts of lignin fiber, stirring and mixing uniformly, maintaining heat preservation and slowing down stirring, adding 25 parts of gravel and 21 parts of slag, stirring and mixing uniformly, stirring at the stirring speed of 2000rpm, and stirring for 5min to obtain aggregate;
(3) Weighing a kerosene solvent, surfactant modified asphalt and a compound antioxidant according to the weight fraction, firstly mixing and stirring the kerosene solvent and the surfactant at 1200rpm for 15min, heating to 85-90 ℃, then adding the modified asphalt and the compound antioxidant, uniformly mixing and stirring, and maintaining the temperature for 25min to obtain a material I;
(4) Weighing methyl phenyl vinyl silicone rubber powder with the phenyl content of 8% according to the weight fraction, adding the methyl phenyl vinyl silicone rubber powder into a material I, mixing and stirring, maintaining the heat preservation, slowing down the stirring for 30min, cooling to 60-65 ℃ after the stirring speed is 800rpm, and obtaining a material II;
(5) And weighing aggregate according to the weight fraction, adding the aggregate into the material II, mixing and stirring, maintaining the temperature and stirring, stirring for 15min, and cooling to room temperature to obtain the environment-friendly asphalt mixture.
Example 4
The environment-friendly asphalt mixture consists of the following components in parts by weight: 12% of modified asphalt, 71% of aggregate, 12% of methyl phenyl vinyl silicone rubber powder with 5% of phenyl content, 3% of kerosene solvent, 1.25% of surfactant and 0.75% of compound antioxidant, wherein the surfactant is formed by mixing dodecyl dimethyl hydroxypropyl sulfobetaine and sodium dodecyl benzene sulfonate according to the mass ratio of 1:1.5, and the compound antioxidant is formed by mixing antioxidant 1010 and antioxidant 168 according to the mass ratio of 1:0.5;
the preparation process comprises the following steps:
(1) Preparation of modified asphalt: mixing 82 parts of petroleum asphalt and 13 parts of liquid silicone rubber, stirring and mixing for 18min at the stirring speed of 1300rpm, heating to 85-90 ℃, adding 0.5 part of tetramethyl silicate, and then carrying out heat preservation and stirring for 5h to obtain modified asphalt;
(2) Preparing aggregate: mixing 2 parts of sodium dodecyl benzene sulfonate and 24 parts of water, stirring and mixing at the stirring speed of 1100rpm for 10min, heating to 60-65 ℃, adding 8 parts of basalt powder, 4 parts of activated clay, 4 parts of illite powder and 10 parts of lignin fiber, stirring and mixing uniformly, maintaining heat preservation and slowing down stirring, adding 26 parts of gravel and 17 parts of slag, stirring and mixing uniformly, stirring at the stirring speed of 1800rpm, and stirring for 5min to obtain aggregate;
(3) Weighing a kerosene solvent, surfactant modified asphalt and a compound antioxidant according to the weight fraction, firstly mixing and stirring the kerosene solvent and the surfactant at the stirring speed of 1000rpm for 12min, heating to 85-90 ℃, then adding the modified asphalt and the compound antioxidant, uniformly mixing and stirring, and maintaining the temperature for 28min to obtain a material I;
(4) Weighing methyl phenyl vinyl silicone rubber powder with the phenyl content of 8% according to the weight fraction, adding the methyl phenyl vinyl silicone rubber powder into a material I, mixing and stirring, maintaining the heat preservation, slowing down the stirring for 28min, and cooling to 60-65 ℃ after the stirring speed is 700rpm to obtain a material II;
(5) And weighing aggregate according to the weight fraction, adding the aggregate into the material II, mixing and stirring, maintaining the temperature and stirring, stirring for 12min, and cooling to room temperature to obtain the environment-friendly asphalt mixture.
Example 5
The environment-friendly asphalt mixture consists of the following components in parts by weight: 9% of modified asphalt, 76% of aggregate, 10% of methyl phenyl vinyl silicone rubber powder with 6% of phenyl content, 3.5% of kerosene solvent, 1% of surfactant and 0.5% of compound antioxidant, wherein the surfactant is formed by mixing dodecyl dimethyl hydroxypropyl sulfobetaine and sodium dodecyl benzene sulfonate according to the mass ratio of 1:2, and the compound antioxidant is formed by mixing antioxidant 1010 and antioxidant 168 according to the mass ratio of 1:0.2;
the preparation process comprises the following steps:
(1) Preparation of modified asphalt: 83 parts of petroleum asphalt and 16 parts of liquid silicone rubber are mixed and stirred at 1400rpm for 18min, after heating to 85-90 ℃, 0.3 part of tetramethyl silicate is added, and then the mixture is subjected to heat preservation and stirring for 4.5h to obtain modified asphalt;
(2) Preparing aggregate: mixing 4 parts of sodium dodecyl benzene sulfonate and 18 parts of water, stirring and mixing at 1000rpm for 12min, heating to 60-65 ℃, adding 5 parts of basalt powder, 3 parts of activated clay, 2 parts of illite powder and 9 parts of lignin fiber, stirring and mixing uniformly, maintaining heat preservation and slowing down stirring, adding 22 parts of gravel and 19 parts of slag, stirring and mixing uniformly, stirring at 1900rpm for 4min, and obtaining aggregate;
(3) Weighing a kerosene solvent, surfactant modified asphalt and a compound antioxidant according to the weight fraction, firstly mixing and stirring the kerosene solvent and the surfactant at 1100rpm for 12min, heating to 85-90 ℃, then adding the modified asphalt and the compound antioxidant, uniformly mixing and stirring, and maintaining the temperature for 30min to obtain a material I;
(4) Weighing methyl phenyl vinyl silicone rubber powder with the phenyl content of 8% according to the weight fraction, adding the methyl phenyl vinyl silicone rubber powder into a material I, mixing and stirring, maintaining the heat preservation and slowing down the stirring for 30min, wherein the stirring speed is 800pm, and then cooling to 60-65 ℃ to obtain a material II;
(5) And weighing aggregate according to the weight fraction, adding the aggregate into the material II, mixing and stirring, maintaining the temperature and stirring, stirring for 10min, and cooling to room temperature to obtain the environment-friendly asphalt mixture.
Example 6
The environment-friendly asphalt mixture consists of the following components in parts by weight: 11% of modified asphalt, 74% of aggregate, 8% of methyl phenyl vinyl silicone rubber powder with 10% of phenyl content, 3% of kerosene solvent, 3% of surfactant and 1% of composite antioxidant, wherein the surfactant is formed by mixing dodecyl dimethyl hydroxypropyl sulfobetaine and sodium dodecyl benzene sulfonate according to the mass ratio of 1:1.8, and the composite antioxidant is formed by mixing antioxidant 1010 and antioxidant 168 according to the mass ratio of 1:0.3;
the preparation process comprises the following steps:
(1) Preparation of modified asphalt: mixing and stirring 80 parts of petroleum asphalt and 15 parts of liquid silicone rubber at a stirring speed of 1200rpm for 15min, heating to 85-90 ℃, adding 0.4 part of polyethylene glycol, and then carrying out heat preservation and stirring for 4h to obtain modified asphalt;
(2) Preparing aggregate: 3 parts of sodium dodecyl benzene sulfonate and 21 parts of water are mixed and stirred at 900rpm for 15min, after heating to 60-65 ℃, 4 parts of basalt stone powder, 3 parts of activated clay, 5 parts of illite powder and 6 parts of lignin fiber are added and stirred uniformly, heat preservation is maintained and stirring is slowed down, 24 parts of gravel and 17 parts of slag are added and stirred uniformly, and then stirring is performed at high speed, the stirring speed is 1800rpm, and stirring is performed for 5min, so that aggregate is obtained;
(3) Weighing a kerosene solvent, surfactant modified asphalt and a compound antioxidant according to the weight fraction, firstly mixing and stirring the kerosene solvent and the surfactant at the stirring speed of 1000rpm for 15min, heating to 85-90 ℃, then adding the modified asphalt and the compound antioxidant, uniformly mixing and stirring, and maintaining the temperature for 25min to obtain a material I;
(4) Weighing methyl phenyl vinyl silicone rubber powder with the phenyl content of 8% according to the weight fraction, adding the methyl phenyl vinyl silicone rubber powder into a material I, mixing and stirring, maintaining the heat preservation and slowing down the stirring for 25min, wherein the stirring speed is 800rpm, and then cooling to 60-65 ℃ to obtain a material II;
(5) And weighing aggregate according to the weight fraction, adding the aggregate into the material II, mixing and stirring, maintaining the temperature and stirring, stirring for 15min, and cooling to room temperature to obtain the environment-friendly asphalt mixture.
Comparative example 1
The environment-friendly asphalt mixture consists of the following components in parts by weight: 9.5% of modified asphalt, 76% of aggregate, 10% of methyl phenyl vinyl silicone rubber powder with 6% of phenyl content, 3.5% of kerosene solvent and 1% of surfactant, wherein the surfactant is formed by mixing dodecyl dimethyl hydroxypropyl sulfobetaine and sodium dodecyl benzene sulfonate according to the mass ratio of 1:2;
the preparation process is exactly the same as in example 5.
Comparative example 2
The environment-friendly asphalt mixture consists of the following components in parts by weight: 9% of modified asphalt, 76% of aggregate, 10% of methyl phenyl vinyl silicone rubber powder with 6% of phenyl content, 3.5% of kerosene solvent, 1% of surfactant and 0.5% of antioxidant, wherein the surfactant is formed by mixing dodecyl dimethyl hydroxypropyl sulfobetaine and sodium dodecyl benzene sulfonate according to the mass ratio of 1:2, and the antioxidant is antioxidant 1010;
the preparation process is exactly the same as in example 5.
Comparative example 3
The environment-friendly asphalt mixture consists of the following components in parts by weight: 9% of modified asphalt, 76% of aggregate, 10% of methyl phenyl vinyl silicone rubber powder with 6% of phenyl content, 3.5% of kerosene solvent, 1% of surfactant and 0.5% of antioxidant, wherein the surfactant is formed by mixing dodecyl dimethyl hydroxypropyl sulfobetaine and sodium dodecyl benzene sulfonate according to the mass ratio of 1:2, and the antioxidant is antioxidant 168;
the preparation process is exactly the same as in example 5.
Comparative example 4
The environment-friendly asphalt mixture consists of the following components in parts by weight: 9% of modified asphalt, 76% of aggregate, 10% of methyl phenyl vinyl silicone rubber powder with 6% of phenyl content, 3.5% of kerosene solvent, 1% of surfactant and 0.5% of antioxidant, wherein the surfactant is formed by mixing dodecyl dimethyl hydroxypropyl sulfobetaine and sodium dodecyl benzene sulfonate according to the mass ratio of 1:2, and the composite antioxidant is formed by mixing antioxidant 1010 and antioxidant 168 according to the mass ratio of 1:0.15;
the preparation process is exactly the same as in example 5.
Comparative example 5
The environment-friendly asphalt mixture consists of the following components in parts by weight: 9% of modified asphalt, 76% of aggregate, 10% of methyl phenyl vinyl silicone rubber powder with 6% of phenyl content, 3.5% of kerosene solvent, 1% of surfactant and 0.5% of antioxidant, wherein the surfactant is formed by mixing dodecyl dimethyl hydroxypropyl sulfobetaine and sodium dodecyl benzene sulfonate according to the mass ratio of 1:2, and the composite antioxidant is formed by mixing antioxidant 1010 and antioxidant 168 according to the mass ratio of 1:0.55;
the preparation process is exactly the same as in example 5.
Comparative example 6
The environment-friendly asphalt mixture consists of the following components in parts by weight: 14% of modified asphalt, 79% of aggregate, 3% of kerosene solvent, 3% of surfactant and 1% of composite antioxidant, wherein the surfactant is formed by mixing dodecyl dimethyl hydroxypropyl sulfobetaine and sodium dodecyl benzene sulfonate according to the mass ratio of 1:1.8, and the composite antioxidant is formed by mixing antioxidant 1010 and antioxidant 168 according to the mass ratio of 1:0.3;
the preparation process is partially the same as in example 6, except that: and (4) directly cooling the material to 60-65 ℃, weighing aggregate according to the weight fraction, adding the aggregate into the material I, mixing and stirring, maintaining the temperature and stirring, stirring for 15min, cooling to room temperature, and obtaining the environment-friendly asphalt mixture, wherein the rest steps are the same.
Comparative example 7
The environment-friendly asphalt mixture consists of the following components in parts by weight: 9% of petroleum asphalt, 76% of aggregate, 10% of methyl phenyl vinyl silicone rubber powder with 6% of phenyl content, 3.5% of kerosene solvent, 1% of surfactant and 0.5% of compound antioxidant, wherein the surfactant is formed by mixing dodecyl dimethyl hydroxypropyl sulfobetaine and sodium dodecyl benzene sulfonate according to the mass ratio of 1:2, and the compound antioxidant is formed by mixing antioxidant 1010 and antioxidant 168 according to the mass ratio of 1:0.2;
the preparation process is partially the same as in example 5, except that: there is no step (1), and the rest steps are the same.
Effect examples
The road performances of the environment-friendly asphalt mixtures prepared in examples 1 to 6 and comparative examples 1 to 3 were tested according to the test procedure JTG E20-2001, the results are shown in Table 1, the environment-friendly asphalt mixtures prepared in examples 1 to 6 and comparative examples 1 to 3 were aged for 30d and 60d at 80℃and the results of comparative examples 1 to 6 and comparative examples 1 to 2 were regarded as 1, and the results of comparative examples 1 to 2 were comparative values of the results of comparative examples 1, and the results are shown in tables 1 and 2, respectively, for the more serious aging conditions.
TABLE 1
TABLE 2
As can be seen from the table 1 and table 2, compared with the comparative examples 1 to 13, the environment-friendly asphalt mixture prepared in the examples 1 to 6 of the invention has excellent pavement performance, is convenient and quick to construct, has excellent components such as green and environment-friendly performance, excellent high-temperature rut resistance, low-temperature fatigue resistance, water damage resistance and aging resistance after construction, has durability and excellent practicability; compared with comparative examples 1-5, the composite antioxidant added in examples 1-6 of the invention synergistically modifies asphalt, aggregate and filler, so that the ageing resistance of the asphalt mixture is improved; compared with comparative example 6, in the invention, the methyl phenyl vinyl silicone rubber powder with the phenyl content of 5-10% is added as the filling material in the examples 1-6, so that the uniformity is improved, the compactness and elasticity are improved, and the low temperature resistance is also improved; compared with comparative example 7, the petroleum asphalt in examples 1-6 is modified by the liquid silicone rubber, so that the compatibility of asphalt, aggregate and filler is improved, and the mechanical property of the asphalt mixture is effectively improved.
Finally, it should be noted that the above-mentioned embodiments only illustrate rather than limit the technical solution of the present invention, and although the present invention has been described in detail with reference to the above-mentioned embodiments, it should be understood by those skilled in the art that the present invention may be modified or equivalently replaced without departing from the spirit and scope of the present invention, and any modification or partial replacement thereof should be included in the scope of the claims of the present invention.
Claims (5)
1. The environment-friendly asphalt mixture is characterized by comprising the following components in parts by weight: 8-14% of modified asphalt, 71-80% of aggregate, 8-12% of filler, 2-5% of kerosene solvent, 1-3% of surfactant and 0.5-1% of composite antioxidant;
the filler is methyl phenyl vinyl silicone rubber powder with the phenyl content of 5-10%;
the composite antioxidant consists of an antioxidant 1010 and an antioxidant 168 according to the mass ratio of 1:0.2-0.5;
the modified asphalt is prepared from petroleum asphalt, liquid silicone rubber and a cross-linking agent raw material;
the modified asphalt comprises the following components in parts by weight: 77-83 parts of petroleum asphalt, 13-16 parts of liquid silicone rubber and 0.3-0.5 part of cross-linking agent;
the aggregate consists of gravel, slag, basalt powder, activated clay, illite powder, lignin fiber, sodium dodecyl benzene sulfonate and water.
2. The environment-friendly asphalt mixture according to claim 1, wherein the aggregate comprises, by weight, 20-26 parts of gravel, 17-21 parts of slag, 4-8 parts of basalt powder, 3-6 parts of activated clay, 2-5 parts of illite powder, 6-11 parts of lignin fibers, 2-5 parts of sodium dodecyl benzene sulfonate and 18-24 parts of water.
3. The environment-friendly asphalt mixture according to claim 1, wherein the surfactant is composed of dodecyl dimethyl hydroxypropyl sulfobetaine and sodium dodecyl benzene sulfonate according to a mass ratio of 1:1.5-2.
4. The environment-friendly asphalt mixture according to claim 1, wherein the cross-linking agent is one of polyethylene glycol, tetramethyl silicate and zinc stearate.
5. A method for preparing the environment-friendly asphalt mixture according to any one of claims 1 to 4, comprising the following steps:
(1) Preparation of modified asphalt: mixing and stirring petroleum asphalt and liquid silicone rubber according to parts by weight, wherein the stirring speed is 1200-1500 rpm, stirring and mixing for 15-20 min, heating to 85-90 ℃, adding a cross-linking agent according to parts by weight, and then carrying out heat preservation and stirring for 4-5 h to obtain modified asphalt;
(2) Preparing aggregate: mixing and stirring sodium dodecyl benzene sulfonate and water according to parts by weight, wherein the stirring speed is 900-1100 rpm, stirring and mixing for 10-15 min, heating to 60-65 ℃, adding basalt powder, activated clay, illite powder and lignin fiber according to parts by weight, stirring and mixing uniformly, maintaining heat preservation and slowing down stirring, adding gravel and slag according to parts by weight, stirring and mixing uniformly, stirring at a high speed of 1800-2000 rpm, and stirring for 3-5 min to obtain aggregate;
(3) Mixing and stirring the kerosene solvent and the surfactant according to the weight fraction, wherein the stirring speed is 1000-1200 rpm, stirring is carried out for 10-15 min, after heating to 85-90 ℃, adding the modified asphalt and the composite antioxidant according to the weight fraction, mixing and stirring uniformly, and maintaining the temperature for 25-30 min to obtain a material I;
(4) Adding a filler into the material I according to the weight fraction, mixing and stirring, maintaining the temperature and slowing down the stirring for 25-30 min, wherein the stirring speed is 600-800 rpm, and then cooling to 60-65 ℃ to obtain a material II;
(5) And adding aggregate into the material II according to the weight fraction, mixing and stirring, maintaining the temperature and stirring for 10-15 min, and cooling to room temperature to obtain the environment-friendly asphalt mixture.
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