CN110713362B - Normal-temperature asphalt mixture and preparation method thereof - Google Patents
Normal-temperature asphalt mixture and preparation method thereof Download PDFInfo
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- CN110713362B CN110713362B CN201911270256.3A CN201911270256A CN110713362B CN 110713362 B CN110713362 B CN 110713362B CN 201911270256 A CN201911270256 A CN 201911270256A CN 110713362 B CN110713362 B CN 110713362B
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- 239000010426 asphalt Substances 0.000 title claims abstract description 161
- 239000000203 mixture Substances 0.000 title claims abstract description 115
- 238000002360 preparation method Methods 0.000 title abstract description 18
- 239000007788 liquid Substances 0.000 claims abstract description 65
- 239000003822 epoxy resin Substances 0.000 claims abstract description 53
- 229920000647 polyepoxide Polymers 0.000 claims abstract description 53
- 239000002904 solvent Substances 0.000 claims abstract description 45
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 27
- 238000010438 heat treatment Methods 0.000 claims abstract description 14
- 229920001971 elastomer Polymers 0.000 claims abstract description 13
- 239000005060 rubber Substances 0.000 claims abstract description 13
- 238000003756 stirring Methods 0.000 claims description 113
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 41
- 238000000034 method Methods 0.000 claims description 36
- 238000002156 mixing Methods 0.000 claims description 36
- 238000006757 chemical reactions by type Methods 0.000 claims description 35
- 229920003048 styrene butadiene rubber Polymers 0.000 claims description 30
- 239000011259 mixed solution Substances 0.000 claims description 22
- 239000004952 Polyamide Substances 0.000 claims description 19
- 239000004568 cement Substances 0.000 claims description 19
- 229920002647 polyamide Polymers 0.000 claims description 19
- 239000002245 particle Substances 0.000 claims description 17
- 229920005610 lignin Polymers 0.000 claims description 16
- 229920005551 calcium lignosulfonate Polymers 0.000 claims description 14
- RYAGRZNBULDMBW-UHFFFAOYSA-L calcium;3-(2-hydroxy-3-methoxyphenyl)-2-[2-methoxy-4-(3-sulfonatopropyl)phenoxy]propane-1-sulfonate Chemical group [Ca+2].COC1=CC=CC(CC(CS([O-])(=O)=O)OC=2C(=CC(CCCS([O-])(=O)=O)=CC=2)OC)=C1O RYAGRZNBULDMBW-UHFFFAOYSA-L 0.000 claims description 14
- WBHHMMIMDMUBKC-XLNAKTSKSA-N ricinelaidic acid Chemical compound CCCCCC[C@@H](O)C\C=C\CCCCCCCC(O)=O WBHHMMIMDMUBKC-XLNAKTSKSA-N 0.000 claims description 14
- 229960003656 ricinoleic acid Drugs 0.000 claims description 14
- FEUQNCSVHBHROZ-UHFFFAOYSA-N ricinoleic acid Natural products CCCCCCC(O[Si](C)(C)C)CC=CCCCCCCCC(=O)OC FEUQNCSVHBHROZ-UHFFFAOYSA-N 0.000 claims description 14
- 239000011435 rock Substances 0.000 claims description 14
- 235000019738 Limestone Nutrition 0.000 claims description 13
- 239000006028 limestone Substances 0.000 claims description 13
- 239000000440 bentonite Substances 0.000 claims description 12
- 229910000278 bentonite Inorganic materials 0.000 claims description 12
- SVPXDRXYRYOSEX-UHFFFAOYSA-N bentoquatam Chemical compound O.O=[Si]=O.O=[Al]O[Al]=O SVPXDRXYRYOSEX-UHFFFAOYSA-N 0.000 claims description 12
- 239000003431 cross linking reagent Substances 0.000 claims description 11
- 239000000843 powder Substances 0.000 claims description 10
- 229910052500 inorganic mineral Inorganic materials 0.000 claims description 7
- 239000011707 mineral Substances 0.000 claims description 7
- 239000004094 surface-active agent Substances 0.000 claims description 6
- 238000000465 moulding Methods 0.000 claims description 5
- 235000021122 unsaturated fatty acids Nutrition 0.000 claims description 5
- 150000004670 unsaturated fatty acids Chemical class 0.000 claims description 5
- 229920001732 Lignosulfonate Polymers 0.000 claims description 4
- PXKLMJQFEQBVLD-UHFFFAOYSA-N bisphenol F Chemical compound C1=CC(O)=CC=C1CC1=CC=C(O)C=C1 PXKLMJQFEQBVLD-UHFFFAOYSA-N 0.000 claims description 4
- GYZLOYUZLJXAJU-UHFFFAOYSA-N diglycidyl ether Chemical compound C1OC1COCC1CO1 GYZLOYUZLJXAJU-UHFFFAOYSA-N 0.000 claims description 4
- 235000019357 lignosulphonate Nutrition 0.000 claims description 4
- 229910052612 amphibole Inorganic materials 0.000 claims description 3
- 238000009826 distribution Methods 0.000 claims description 3
- 238000004519 manufacturing process Methods 0.000 claims description 3
- 229920000459 Nitrile rubber Polymers 0.000 claims description 2
- 229910019142 PO4 Inorganic materials 0.000 claims description 2
- 241000923606 Schistes Species 0.000 claims description 2
- 239000004113 Sepiolite Substances 0.000 claims description 2
- 125000001931 aliphatic group Chemical group 0.000 claims description 2
- 150000004645 aluminates Chemical class 0.000 claims description 2
- GUJOJGAPFQRJSV-UHFFFAOYSA-N dialuminum;dioxosilane;oxygen(2-);hydrate Chemical compound O.[O-2].[O-2].[O-2].[Al+3].[Al+3].O=[Si]=O.O=[Si]=O.O=[Si]=O.O=[Si]=O GUJOJGAPFQRJSV-UHFFFAOYSA-N 0.000 claims description 2
- -1 glycidyl ester Chemical class 0.000 claims description 2
- 239000010438 granite Substances 0.000 claims description 2
- 229910052900 illite Inorganic materials 0.000 claims description 2
- 239000004579 marble Substances 0.000 claims description 2
- 229910052901 montmorillonite Inorganic materials 0.000 claims description 2
- 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 2
- AFEQENGXSMURHA-UHFFFAOYSA-N oxiran-2-ylmethanamine Chemical compound NCC1CO1 AFEQENGXSMURHA-UHFFFAOYSA-N 0.000 claims description 2
- 239000010452 phosphate Substances 0.000 claims description 2
- NBIIXXVUZAFLBC-UHFFFAOYSA-K phosphate Chemical compound [O-]P([O-])([O-])=O NBIIXXVUZAFLBC-UHFFFAOYSA-K 0.000 claims description 2
- 229920002857 polybutadiene Polymers 0.000 claims description 2
- 150000008442 polyphenolic compounds Chemical class 0.000 claims description 2
- 235000013824 polyphenols Nutrition 0.000 claims description 2
- 239000011044 quartzite Substances 0.000 claims description 2
- 229910052624 sepiolite Inorganic materials 0.000 claims description 2
- 235000019355 sepiolite Nutrition 0.000 claims description 2
- 239000003469 silicate cement Substances 0.000 claims description 2
- 239000010454 slate Substances 0.000 claims description 2
- 239000010455 vermiculite Substances 0.000 claims description 2
- 229910052902 vermiculite Inorganic materials 0.000 claims description 2
- 235000019354 vermiculite Nutrition 0.000 claims description 2
- TXBCHPGETQLSGV-UHFFFAOYSA-M sodium;2-(dodecylamino)propanoate Chemical group [Na+].CCCCCCCCCCCCNC(C)C([O-])=O TXBCHPGETQLSGV-UHFFFAOYSA-M 0.000 claims 2
- 238000004321 preservation Methods 0.000 abstract description 30
- 238000011161 development Methods 0.000 abstract description 7
- 238000011282 treatment Methods 0.000 abstract description 2
- 238000001723 curing Methods 0.000 description 24
- 239000011159 matrix material Substances 0.000 description 20
- 239000002994 raw material Substances 0.000 description 20
- 238000005303 weighing Methods 0.000 description 20
- 230000000052 comparative effect Effects 0.000 description 18
- FBCHMEOPUKIZJN-UHFFFAOYSA-N dodecyl 2-aminopropanoate;sodium Chemical group [Na].CCCCCCCCCCCCOC(=O)C(C)N FBCHMEOPUKIZJN-UHFFFAOYSA-N 0.000 description 12
- 239000011398 Portland cement Substances 0.000 description 11
- 239000000463 material Substances 0.000 description 11
- 238000001035 drying Methods 0.000 description 10
- 238000006243 chemical reaction Methods 0.000 description 7
- 230000018109 developmental process Effects 0.000 description 6
- 230000000694 effects Effects 0.000 description 6
- 238000005516 engineering process Methods 0.000 description 6
- 239000000126 substance Substances 0.000 description 5
- 238000012360 testing method Methods 0.000 description 5
- 230000009286 beneficial effect Effects 0.000 description 4
- 238000010276 construction Methods 0.000 description 4
- 101100257124 Caenorhabditis elegans sma-10 gene Proteins 0.000 description 3
- 238000005452 bending Methods 0.000 description 3
- 238000004132 cross linking Methods 0.000 description 3
- 239000000835 fiber Substances 0.000 description 3
- 239000007787 solid Substances 0.000 description 3
- 230000002195 synergetic effect Effects 0.000 description 3
- 230000007547 defect Effects 0.000 description 2
- 239000000945 filler Substances 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 239000011295 pitch Substances 0.000 description 2
- 239000000243 solution Substances 0.000 description 2
- 239000011800 void material Substances 0.000 description 2
- 239000005995 Aluminium silicate Substances 0.000 description 1
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 239000004593 Epoxy Substances 0.000 description 1
- 230000032683 aging Effects 0.000 description 1
- 238000007605 air drying Methods 0.000 description 1
- 235000012211 aluminium silicate Nutrition 0.000 description 1
- 150000001412 amines Chemical class 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 239000004566 building material Substances 0.000 description 1
- 239000006227 byproduct Substances 0.000 description 1
- 239000000378 calcium silicate Substances 0.000 description 1
- 229910052918 calcium silicate Inorganic materials 0.000 description 1
- OYACROKNLOSFPA-UHFFFAOYSA-N calcium;dioxido(oxo)silane Chemical compound [Ca+2].[O-][Si]([O-])=O OYACROKNLOSFPA-UHFFFAOYSA-N 0.000 description 1
- XFWJKVMFIVXPKK-UHFFFAOYSA-N calcium;oxido(oxo)alumane Chemical compound [Ca+2].[O-][Al]=O.[O-][Al]=O XFWJKVMFIVXPKK-UHFFFAOYSA-N 0.000 description 1
- 230000000711 cancerogenic effect Effects 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 125000003178 carboxy group Chemical group [H]OC(*)=O 0.000 description 1
- 231100000315 carcinogenic Toxicity 0.000 description 1
- 238000010382 chemical cross-linking Methods 0.000 description 1
- 239000007810 chemical reaction solvent Substances 0.000 description 1
- 238000003776 cleavage reaction Methods 0.000 description 1
- 239000011294 coal tar pitch Substances 0.000 description 1
- 239000000084 colloidal system Substances 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 239000010779 crude oil Substances 0.000 description 1
- 239000002283 diesel fuel Substances 0.000 description 1
- 201000010099 disease Diseases 0.000 description 1
- 208000037265 diseases, disorders, signs and symptoms Diseases 0.000 description 1
- 238000004090 dissolution Methods 0.000 description 1
- 238000004821 distillation Methods 0.000 description 1
- 239000000839 emulsion Substances 0.000 description 1
- 238000004134 energy conservation Methods 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 238000005187 foaming Methods 0.000 description 1
- LNEPOXFFQSENCJ-UHFFFAOYSA-N haloperidol Chemical compound C1CC(O)(C=2C=CC(Cl)=CC=2)CCN1CCCC(=O)C1=CC=C(F)C=C1 LNEPOXFFQSENCJ-UHFFFAOYSA-N 0.000 description 1
- 230000002427 irreversible effect Effects 0.000 description 1
- NLYAJNPCOHFWQQ-UHFFFAOYSA-N kaolin Chemical compound O.O.O=[Al]O[Si](=O)O[Si](=O)O[Al]=O NLYAJNPCOHFWQQ-UHFFFAOYSA-N 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 239000011306 natural pitch Substances 0.000 description 1
- 229910052755 nonmetal Inorganic materials 0.000 description 1
- 238000011056 performance test Methods 0.000 description 1
- 239000003208 petroleum Substances 0.000 description 1
- 239000011301 petroleum pitch Substances 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 239000000047 product Substances 0.000 description 1
- 230000007017 scission Effects 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 239000000779 smoke Substances 0.000 description 1
- 238000001179 sorption measurement Methods 0.000 description 1
- 239000000725 suspension Substances 0.000 description 1
- 229920002994 synthetic fiber Polymers 0.000 description 1
- 230000000007 visual effect Effects 0.000 description 1
- 239000012855 volatile organic compound Substances 0.000 description 1
- 238000009736 wetting 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
- C04B28/00—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements
- C04B28/02—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements containing hydraulic cements other than calcium sulfates
- C04B28/04—Portland cements
-
- 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
- C04B28/00—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements
-
- 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
- C04B28/00—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements
- C04B28/02—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements containing hydraulic cements other than calcium sulfates
- C04B28/06—Aluminous cements
-
- 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
- C04B28/00—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements
- C04B28/34—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements containing cold phosphate binders
-
- 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
- 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
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Ceramic Engineering (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Inorganic Chemistry (AREA)
- Materials Engineering (AREA)
- Structural Engineering (AREA)
- Organic Chemistry (AREA)
- Road Paving Structures (AREA)
- Compositions Of Macromolecular Compounds (AREA)
Abstract
The invention discloses a normal-temperature asphalt mixture and a preparation method thereof. The normal temperature asphalt mixture comprises 40-80 parts by weight of asphalt, 15-30 parts by weight of curing agent, 10-30 parts by weight of reactive solvent, 15-25 parts by weight of rubber, 10-30 parts by weight of epoxy resin and 650-950 parts by weight of aggregate. The reactive asphalt mixture can realize the fluidity of the asphalt liquid at normal temperature in the preparation process, so that the mixture can be paved on a newly-built road surface or used for repairing the road surface at normal temperature without heating, heat preservation and other treatments. In addition, the reactive asphalt mixture has excellent initial strength and strength development speed, and other properties of the reactive asphalt mixture reach the performance standard of hot-mix asphalt mixtures, so that the reactive asphalt mixture is particularly suitable for paving new pavements and quickly maintaining pavements at normal temperature.
Description
Technical Field
The invention relates to the field of asphalt pavement materials, in particular to a normal-temperature asphalt mixture and a preparation method thereof.
Background
In recent years, along with the adjustment of national policies and the development of pavement material science, a road building material with the characteristics of energy conservation, low carbon and environmental protection continuously appears. In order to make up the defects of high construction temperature, large construction energy consumption, carcinogenic smoke pollution and asphalt aging of hot-mix asphalt mixtures in the production and paving processes, a warm-mix asphalt technology and a cold-mix asphalt technology are successively put into engineering practice, wherein the warm-mix asphalt technology improves the defects of hot-mix asphalt to a certain extent by adding various warm-mix agents, and the cold-mix asphalt technology realizes the normal-temperature paving of asphalt pavements revolutionarily, but the pavement performance of the technologies is not good and good; the other is solvent type, which takes volatile organic compounds such as diesel oil, gasoline and the like as main materials, and has good and bad road performance, higher cost and easy pollution. Both solvent type normal temperature asphalt material and emulsion type normal temperature asphalt material have the problems of low initial strength, slow strength development, weak bonding with old pavement and the like, so that the problems of poor repairing effect, repeated diseases and the like are caused.
CN107903642A discloses a method for preparing normal temperature sealing liquid asphalt, which can effectively solve the problem of fluidity of asphalt at normal temperature, and has low initial strength, and can only open traffic at a proper speed limit, and open traffic completely, and needs longer time, except that it still needs 1-1.5 hours of air drying time after paving. CN108034268A discloses a cold patch asphalt liquid and a preparation method thereof, which can reduce the production cost and the workability of construction of the cold patch asphalt liquid, but the initial strength is low, the forming strength is not high, and the cold patch asphalt liquid can only be applied to emergency pit repairing and cannot be applied to newly-built pavements.
Disclosure of Invention
In order to solve at least part of the technical problems, the invention provides a normal-temperature asphalt mixture with excellent comprehensive performance, which can be applied to road surface repair or newly-built road surfaces at normal temperature, has excellent initial strength and strength development speed, and can meet the performance standard of a hot-mix asphalt mixture with other performances. The invention also provides a preparation method of the normal-temperature asphalt mixture.
In order to solve the technical problems, the technical scheme of the invention is as follows:
a normal temperature asphalt mixture comprises 40-80 parts by weight of asphalt, 15-30 parts by weight of curing agent, 10-30 parts by weight of reactive solvent, 15-25 parts by weight of rubber, 10-30 parts by weight of aqueous epoxy resin and 650-950 parts by weight of aggregate;
the curing agent comprises 10-20 parts by weight of mineral powder and 5-25 parts by weight of cement;
the reaction type solvent contains 5-25 parts by weight of unsaturated fatty acid, 5-12 parts by weight of surfactant, 2-8 parts by weight of accelerator and 10-30 parts by weight of cross-linking agent; the cross-linking agent comprises one or more of sulfonated lignin, methylated lignin, esterified lignin, acylated lignin and alkylated lignin;
the rubber is at least one of liquid polybutadiene rubber, liquid styrene-butadiene rubber and liquid nitrile-butadiene rubber.
Preferably, the asphalt has a brookfield viscosity at 60 ℃ of 3.0Pa · s or less, preferably 2.5Pa · s or less, more preferably 2.0Pa · s or less, when measured according to the T0625-2000 asphalt brookfield rotational viscosity test. On the other hand, it is usually 1.0 pas or more, preferably 1.5 pas or more. The term "normal temperature fluidity" as used herein means fluidity at a temperature of 25. + -. 5 ℃. This property can be clearly judged by visual observation.
Preferably, the bitumen includes, but is not limited to, coal tar pitch, petroleum pitch, and natural pitch. Preferably petroleum asphalt, which is the residue after distillation of crude oil. Further, the preferred asphalt is No. 70 base asphalt. The pitch of the present invention may be liquid, semisolid or solid at normal temperature, and is not particularly limited thereto. The reactive solvent of the invention is beneficial to the colloid in the asphalt to be in a low molecular compound state, thereby being beneficial to realizing the normal temperature fluidity.
Preferably, the bitumen is used in an amount of generally 40 to 80 parts by weight, preferably 50 to 70 parts by weight, more preferably 60 to 65 parts by weight.
The curing agent is an inorganic non-metal powder material with volcanic ash activity as a main component. The curing agent not only has a modification effect in the asphalt, but also can play a role of a filler. The curing agent can improve the strength of the asphalt and has certain improvement effect on the high-temperature performance, the low-temperature performance and the water stability of the asphalt. The reason may be that the curing agent of the present invention has pozzolanic activity, and there are three phenomena of wetting, adsorption and chemical reaction with the asphalt interface. The above effect is achieved due to the synergistic effect of these three reactions.
Preferably, the curing agent is used in an amount of generally 15 to 30 parts by weight, preferably 15 to 28 parts by weight, more preferably 18 to 20 parts by weight.
Preferably, the curing agent comprises 12-18 parts by weight of mineral powder and 16-18 parts by weight of cement.
Preferably, the mineral powder is at least one of bentonite, montmorillonite, vermiculite, kaolin, illite and sepiolite powder; the cement is at least one of cement taking silicate cement, aluminate cement, sulphoaluminate cement, ferro-aluminate cement, fluoroaluminate cement, phosphate cement and volcanic ash as main components.
The mineral powder is preferably bentonite, and the cement is preferably portland cement, and more preferably ordinary portland cement.
Preferably, the reactive solvent is used in an amount of generally 10 to 30 parts by weight, preferably 20 to 28 parts by weight, more preferably 24 to 28 parts by weight.
Preferably, the unsaturated fatty acid is ricinoleic acid; the surfactant is sodium dodecyl aminopropionate; the accelerator is low molecular polyamide; the cross-linking agent is calcium lignosulfonate; the reaction type solvent contains 20 parts by weight of ricinoleic acid, 8 parts by weight of sodium dodecyl aminopropionate, 4 parts by weight of low molecular polyamide and 25 parts by weight of calcium lignosulfonate.
Preferably, the unsaturated fatty acid is contained in an amount of 5 to 25 parts by weight, preferably 10 to 25 parts by weight, more preferably 15 to 25 parts by weight. Too high a content affects initial strength and the strength development speed. Too low a content is disadvantageous for the improvement of fluidity.
Preferably, the content of the surfactant in the reactive solvent is 5 to 12 parts by weight, preferably 6 to 9 parts by weight, more preferably 6 to 8 parts by weight. Surfactants within the above range have excellent foaming properties and contribute to asphalt liquefaction and compatibility between the components of the reactive solution. The accelerator of the invention is preferably an amine accelerator, more preferably a low molecular weight polyamide. Further preferred is a polyamide having a molecular weight of 600 to 1100, for example, 200#, 500#, 600#, 650# low-molecular polyamide, preferably 650# low-molecular polyamide.
The accelerant ensures that the waterborne epoxy resin and the whole oily asphalt system have better compatibility.
Preferably, the accelerator is present in an amount of 2 to 8 parts by weight, preferably 2 to 6 parts by weight, more preferably 2 to 4 parts by weight. The content of the above components is too low to facilitate mixing of the asphalt with the aqueous epoxy resin described below, thereby being disadvantageous in dissolution. On the other hand, if the content is too high, unnecessary cost increases are incurred, and long-term use of the resulting asphalt and its products is affected.
Preferably, the crosslinking agent includes, but is not limited to, sulfonated lignin, methylated lignin, esterified lignin, acylated lignin, alkylated lignin, industrial byproduct lignin-based organic macromolecular mixtures, and combinations of one or more of the foregoing may be used in the present invention. Preferably sulfonated lignin, more preferably calcium lignosulfonate.
Preferably, the crosslinking agent is present in an amount of 10 to 30 parts by weight, preferably 16 to 28 parts by weight, more preferably 20 to 25 parts by weight. One end of the structural formula of the cross-linking agent in the range can react with unsaturated C = C double bond, carboxyl-COOH, hydroxyl-OH and other groups in asphalt, waterborne epoxy resin and rubber to form chemical bonds, and the other end of the structural formula of the cross-linking agent is combined with mineral powder and calcium silicate or calcium aluminate in cement to form chemical bonds to perform chemical cross-linking reaction with the mixture, so that modified asphalt (namely asphalt modified by reactive solvents, waterborne epoxy resin and rubber) and the aggregate are tightly connected into a whole, chemical bonds exist at related parts to form a cross-linked bridge, and the cross-linked bridge plays an irreversible bonding role after being cured, thereby being beneficial to the mixing, cross-linking and curing of the modified asphalt, the curing agent and the aggregate, and improving other properties of the mixture and achieving the standard of hot-mixed asphalt mixture under the condition of keeping high initial strength and strength development speed.
The rubber is preferably liquid styrene-butadiene rubber. The addition of rubber further increases the plasticity of the asphalt and improves the adhesion of the resulting fluid asphalt.
Preferably, the rubber is 15 to 25 parts by weight, preferably 15 to 20 parts by weight, more preferably 16 to 18 parts by weight. More preferably, the water-based epoxy resin is at least one of a bisphenol a water-based epoxy resin, a bisphenol F water-based epoxy resin, a polyphenol type glycidyl ether water-based epoxy resin, an aliphatic glycidyl ether water-based epoxy resin, a glycidyl ester type water-based epoxy resin, and a glycidyl amine type water-based epoxy resin. Bisphenol a type waterborne epoxy resins are preferred.
The waterborne epoxy resin reduces the damage of the asphalt caused by liquefaction, and is further beneficial to improving the viscosity, ductility and the like of the asphalt. The content of the aqueous epoxy resin of the present invention is usually 10 to 30 parts by weight, preferably 22 to 28 parts by weight, more preferably 24 to 26 parts by weight.
The combination of the reactive solution with rubber, waterborne epoxy liquefies the asphalt and modifies its system.
Preferably, the aggregate is at least one of igneous rock, sedimentary rock and metamorphic rock; the igneous rock is at least one of granite, amphibole, gabbros, diabase and basalt; the sedimentary rock is at least one of limestone, sandstone, shale and conglomerate; the metamorphic rock is at least one of marble rock, slate, schist, gneiss and quartzite.
Preferably, the aggregate is at least one of gabbros, diabase, basalt, amphibole and limestone.
The preparation method of the normal-temperature asphalt mixture comprises the following steps:
(1) heating 40-80 parts by weight of asphalt to 120-220 ℃, adding 10-30 parts by weight of reaction type solvent, stirring for 5-10min at a first stirring speed of 30-60 r/min, and then continuously stirring for 1-10min at a second stirring speed of 80-140 r/min to obtain a mixed solution;
(2) adding 15-25 parts by weight of rubber into the mixed solution, and dispersing to obtain suspended matters;
(3) and adding 10-30 parts by weight of epoxy resin into the suspension, and stirring to obtain the asphalt liquid.
(4) And determining the particle size distribution of the curing agent according to the grading and the type of the selected aggregate, and mixing the aggregate with the asphalt liquid to obtain the normal-temperature asphalt mixture.
The grain size distribution of the curing agent is determined according to the grading and the type of the selected aggregate, the curing agent with consistent grain size range is selected according to the grain size range determined by the grading and the type of the selected aggregate, and the specific grain size is limited as shown in Table 1.
Preferably, the initial stability of the normal-temperature asphalt mixture is more than 3.5kN, and the molding stability is more than 8.0 kN.
The aggregate and its amount can affect the strength of the resulting mix. The strength is influenced by the synergistic effect of the adhesion of the bituminous material and the force of the embedding of the aggregates in the present invention. The aggregate of the invention is used in an amount of 650-950 parts by weight, preferably 750-900 parts by weight, more preferably 780-850 parts by weight. The grading type of the present invention can use, but is not limited to, AC-10, SAC-10, SMA-10, LB-10. Specifically, the following table 1 shows.
TABLE 1 particle size of the respective grading types
That is, the curing agent of the present invention may partially or fully replace the aggregate of the corresponding graded grade in the grading. Preferably, the weight ratio of curing agent to aggregate is 1-10:0.1-100, more preferably 2-5: 0.1-50. The weight ratio of the pitch liquid to the solid in the present invention is not particularly limited, but is usually in the range of 1 to 10:100, more preferably 5 to 8: 100. The solid means a combination of aggregate and curing agent. Preferably, the normal-temperature asphalt mixture of the invention is ready for use after being mixed. It is also preferable that the construction is completed within 4 hours after the blending.
The reactive asphalt mixture can realize the fluidity of the asphalt liquid at normal temperature in the preparation process, so that the obtained mixture can be used for paving and repairing roads at normal temperature without the treatment of a mixing station, heating, heat preservation and the like. In addition, different from the conventional normal-temperature asphalt material, the reactive asphalt mixture obtained by the method has excellent initial strength and strength development speed, and other properties reach the performance standard of hot-mix asphalt mixtures, so that the reactive asphalt mixture is particularly suitable for quickly maintaining road surfaces and newly building road surfaces at normal temperature.
Detailed Description
Reference will now be made in detail to various exemplary embodiments of the invention, the detailed description should not be construed as limiting the invention but as a more detailed description of certain aspects, features and embodiments of the invention.
It is to be understood that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. Further, for numerical ranges in this disclosure, it is understood that the upper and lower limits of the range, and each intervening value therebetween, is specifically disclosed. Every smaller range between any stated value or intervening value in a stated range and any other stated or intervening value in a stated range is encompassed within the invention. The upper and lower limits of these smaller ranges may independently be included or excluded in the range.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. Although only preferred methods and materials are described herein, any methods and materials similar or equivalent to those described herein can be used in the practice or testing of the present invention. Unless otherwise indicated, "%" refers to percent by weight.
Example 1
The normal temperature asphalt mixture of this example was prepared as follows:
(1) weighing and mixing raw materials according to a formula of 20 parts by weight of ricinoleic acid, 8 parts by weight of sodium dodecyl aminopropionate, 4 parts by weight of low molecular polyamide and 25 parts by weight of calcium lignosulfonate to obtain a reaction type solvent;
the low molecular polyamide is 650# of Shandong Apoi chemical technology Co., Ltd;
the liquid styrene-butadiene rubber is SH-5WB of the liquid styrene-butadiene rubber from Shanghai Plastic raw materials Limited of Dongguan;
the water-based epoxy resin is CYDW-100, a dry-cured and synthetic material science and technology company, Inc. of Guangzhou city.
(2) Heating 60 parts by weight of No. 70 matrix asphalt to 145 ℃, and keeping the temperature under the state of slow stirring (40r/min) for waiting for the next process;
(3) adding 24 parts by weight of reaction type solvent into No. 70 matrix asphalt, slowly stirring for 6min, and then stirring for about 5min at a medium speed (80r/min) until the reaction type solvent is uniformly dispersed; and waiting for the next procedure under the state of slow stirring (40r/min) (without heat preservation);
(4) adding 18 parts by weight of liquid styrene-butadiene rubber into the mixed solution, firstly stirring at a low speed for 3-5min, and then stirring at a medium speed (100r/min) for about 5min until the liquid styrene-butadiene rubber is uniformly dispersed; and waiting for the next procedure under the state of slow stirring (40r/min) (without heat preservation);
(5) adding 24 parts by weight of water-based epoxy resin into the mixed solution, firstly stirring at a low speed for 3-5min, and then stirring at a medium speed (80r/min) for about 5min until the water-based epoxy resin is uniformly dispersed (no white suspended matters); stirring for about 10min under a slow stirring state (50r/min) (without heat preservation), and thus finishing the preparation of the reactive normal-temperature liquid asphalt;
(6) weighing 700 parts by weight of aggregate (containing 25 weight percent of bentonite and ordinary portland cement mixture and 75 weight percent of basalt and limestone mixture) according to the AC-10 level, uniformly mixing, drying and storing for later use; and (3) mechanically mixing the normal-temperature asphalt liquid with the aggregate until the mixture is uniformly mixed to obtain a normal-temperature asphalt mixture. The particle size range of the curing agent is consistent with the particle size range specified in the AC-10 grading in Table 1.
Example 2
The raw materials are from the same sources as in example 1.
The normal temperature asphalt mixture of this example was prepared as follows:
(1) weighing and mixing raw materials according to a formula of 20 parts by weight of ricinoleic acid, 6 parts by weight of sodium dodecyl aminopropionate, 3 parts by weight of low molecular polyamide and 20 parts by weight of calcium lignosulfonate to obtain a reaction type solvent;
(2) heating 65 parts by weight of No. 70 matrix asphalt to 145 ℃, and keeping the temperature under the state of slow stirring (40r/min) for waiting for the next process;
(3) adding 24 parts by weight of reaction type solvent into No. 70 matrix asphalt, slowly stirring for 6min, and then stirring for about 5min at a medium speed (80r/min) until the reaction type solvent is uniformly dispersed; and waiting for the next procedure under the state of slow stirring (40r/min) (without heat preservation);
(4) adding 18 parts by weight of liquid styrene-butadiene rubber into the mixed solution, firstly stirring at a low speed for 3-5min, and then stirring at a medium speed (100r/min) for about 5min until the liquid styrene-butadiene rubber is uniformly dispersed; and waiting for the next procedure under the state of slow stirring (40r/min) (without heat preservation);
(5) adding 24 parts by weight of water-based epoxy resin into the mixed solution, firstly stirring at a low speed for 3-5min, and then stirring at a medium speed (80r/min) for about 5min until the water-based epoxy resin is uniformly dispersed (no white suspended matters); stirring for about 10min under a slow stirring state (50r/min) (without heat preservation), and thus finishing the preparation of the reactive normal-temperature liquid asphalt;
(6) weighing 700 aggregates (containing a mixture of 50 wt% of bentonite and ordinary portland cement and a mixture of 50 wt% of basalt and limestone) according to SAC-10 grading, uniformly blending, drying and storing for later use; and (3) mechanically mixing the normal-temperature asphalt liquid with the aggregate until the mixture is uniformly mixed to obtain a normal-temperature asphalt mixture. The particle size range of the curing agent was consistent with the particle size range specified in SAC-10 grading in Table 1.
Example 3
The raw materials are from the same sources as in example 1.
The normal temperature asphalt mixture of this example was prepared as follows:
(1) weighing and mixing the raw materials according to the formula of 24 parts by weight of ricinoleic acid, 6 parts by weight of sodium dodecyl aminopropionate, 3 parts by weight of low molecular polyamide and 20 parts by weight of calcium lignosulfonate to obtain a reaction type solvent;
(2) heating 65 parts by weight of No. 70 matrix asphalt to 145 ℃, and keeping the temperature under the state of slow stirring (40r/min) for waiting for the next process;
(3) adding 24 parts by weight of reaction type solvent into No. 70 matrix asphalt, slowly stirring for 6min, and then stirring for about 5min at a medium speed (80r/min) until the reaction type solvent is uniformly dispersed; and waiting for the next procedure under the state of slow stirring (40r/min) (without heat preservation);
(4) adding 16 parts by weight of liquid styrene-butadiene rubber into the mixed solution, firstly stirring at a low speed for 3-5min, and then stirring at a medium speed (100r/min) for about 5min until the liquid styrene-butadiene rubber is uniformly dispersed; and waiting for the next procedure under the state of slow stirring (40r/min) (without heat preservation);
(5) adding 26 parts by weight of water-based epoxy resin into the mixed solution, slowly stirring for 3-5min, and then stirring at a medium speed (80r/min) for about 5min until the water-based epoxy resin is uniformly dispersed (no white suspended matter); stirring for about 10min under a slow stirring state (50r/min) (without heat preservation), and thus finishing the preparation of the reactive normal-temperature liquid asphalt;
(6) weighing 700 parts by weight of aggregate (containing 35 weight percent of bentonite and ordinary portland cement mixture and 65 weight percent of basalt and limestone mixture) according to the SMA-10 grade, uniformly mixing, drying and storing for later use; and (3) mechanically mixing the normal-temperature asphalt liquid with the aggregate until the mixture is uniformly mixed to obtain a normal-temperature asphalt mixture. The particle size range of the curing agent was consistent with the particle size range specified in the SMA-10 grading in Table 1.
Example 4
The raw materials are from the same sources as in example 1.
The normal temperature asphalt mixture of this example was prepared as follows:
(1) weighing and mixing the raw materials according to the formula of 24 parts by weight of ricinoleic acid, 6 parts by weight of sodium dodecyl aminopropionate, 3 parts by weight of low molecular polyamide and 20 parts by weight of calcium lignosulfonate to obtain a reaction type solvent;
(2) heating 65 parts by weight of No. 70 matrix asphalt to 145 ℃, and keeping the temperature under the state of slow stirring (40r/min) for waiting for the next process;
(3) adding 26 parts by weight of reaction type solvent into No. 70 matrix asphalt, slowly stirring for 6min, and then stirring for about 5min at a medium speed (80r/min) until the reaction type solvent is uniformly dispersed; and waiting for the next procedure under the state of slow stirring (40r/min) (without heat preservation);
(4) adding 18 parts by weight of liquid styrene-butadiene rubber into the mixed solution, firstly stirring at a low speed for 3-5min, and then stirring at a medium speed (100r/min) for about 5min until the liquid styrene-butadiene rubber is uniformly dispersed; and waiting for the next procedure under the state of slow stirring (40r/min) (without heat preservation);
(5) adding 26 parts by weight of water-based epoxy resin into the mixed solution, slowly stirring for 3-5min, and then stirring at a medium speed (80r/min) for about 5min until the water-based epoxy resin is uniformly dispersed (no white suspended matter); stirring for about 10min under a slow stirring state (50r/min) (without heat preservation), and thus finishing the preparation of the reactive normal-temperature liquid asphalt;
(6) weighing 700 parts by weight of aggregate (containing 45 weight percent of bentonite and ordinary portland cement mixture and 55 weight percent of basalt and limestone mixture) according to LB-10 grade, uniformly mixing, drying and storing for later use; and (3) mechanically mixing the normal-temperature asphalt liquid with the aggregate until the mixture is uniformly mixed to obtain a normal-temperature asphalt mixture. The particle size range of the curing agent was consistent with the particle size range specified in the LB-10 scale in Table 1.
Comparative example 1
The raw materials are from the same sources as in example 1.
The normal temperature asphalt mixture of the comparative example was prepared as follows:
(1) weighing and mixing raw materials according to a formula of 20 parts by weight of ricinoleic acid, 8 parts by weight of sodium dodecyl aminopropionate and 4 parts by weight of low molecular polyamide to obtain a reaction type solvent;
(2) heating 60 parts by weight of No. 70 matrix asphalt to 145 ℃, and keeping the temperature under the state of slow stirring (40r/min) for waiting for the next process;
(3) adding 24 parts by weight of reaction type solvent into No. 70 matrix asphalt, slowly stirring for 6min, and then stirring for about 5min at a medium speed (80r/min) until the reaction type solvent is uniformly dispersed; and waiting for the next procedure under the state of slow stirring (40r/min) (without heat preservation);
(4) adding 18 parts by weight of liquid styrene-butadiene rubber into the mixed solution, firstly stirring at a low speed for 3-5min, and then stirring at a medium speed (100r/min) for about 5min until the liquid styrene-butadiene rubber is uniformly dispersed; and waiting for the next procedure under the state of slow stirring (40r/min) (without heat preservation);
(5) adding 24 parts by weight of water-based epoxy resin into the mixed solution, firstly stirring at a low speed for 3-5min, and then stirring at a medium speed (80r/min) for about 5min until the water-based epoxy resin is uniformly dispersed (no white suspended matters); stirring for about 10min under a slow stirring state (50r/min) (without heat preservation), and thus finishing the preparation of the reactive normal-temperature liquid asphalt;
(6) weighing 700 parts by weight of aggregate (containing 25 weight percent of bentonite and ordinary portland cement mixture and 75 weight percent of basalt and limestone mixture) according to the AC-10 level, uniformly mixing, drying and storing for later use; and (3) mechanically mixing the normal-temperature asphalt liquid and the aggregate until the mixture is uniformly mixed to obtain the asphalt mixture.
Comparative example 2
The raw materials are from the same sources as in example 1.
The normal temperature asphalt mixture of the comparative example was prepared as follows:
(1) weighing and mixing raw materials according to a formula of 20 parts by weight of ricinoleic acid, 8 parts by weight of sodium dodecyl aminopropionate, 4 parts by weight of low molecular polyamide and 25 parts by weight of calcium lignosulfonate to obtain a reaction type solvent;
(2) heating 60 parts by weight of No. 70 matrix asphalt to 145 ℃, and keeping the temperature under the state of slow stirring (40r/min) for waiting for the next process;
(3) adding 24 parts by weight of reaction type solvent into No. 70 matrix asphalt, slowly stirring for 6min, and then stirring for about 5min at a medium speed (80r/min) until the reaction type solvent is uniformly dispersed; and waiting for the next procedure under the state of slow stirring (40r/min) (without heat preservation);
(4) adding 24 parts by weight of water-based epoxy resin into the mixed solution, firstly stirring at a low speed for 3-5min, and then stirring at a medium speed (80r/min) for about 5min until the water-based epoxy resin is uniformly dispersed (no white suspended matters); stirring for about 10min under a slow stirring state (50r/min) (without heat preservation), and thus finishing the preparation of the reactive normal-temperature liquid asphalt;
(5) weighing 700 parts by weight of aggregate (containing 25 weight percent of bentonite and ordinary portland cement mixture and 75 weight percent of basalt and limestone mixture) according to the AC-10 level, uniformly mixing, drying and storing for later use; and (3) mechanically mixing the normal-temperature asphalt liquid and the aggregate until the mixture is uniformly mixed to obtain the asphalt mixture.
Comparative example 3
The raw materials are from the same sources as in example 1.
The normal temperature asphalt mixture of the comparative example was prepared as follows:
(1) weighing and mixing raw materials according to a formula of 20 parts by weight of ricinoleic acid, 8 parts by weight of sodium dodecyl aminopropionate, 4 parts by weight of low molecular polyamide and 25 parts by weight of calcium lignosulfonate to obtain a reaction type solvent;
(2) heating 60 parts by weight of No. 70 matrix asphalt to 145 ℃, and keeping the temperature under the state of slow stirring (40r/min) for waiting for the next process;
(3) adding 24 parts by weight of reaction type solvent into No. 70 matrix asphalt, slowly stirring for 6min, and then stirring for about 5min at a medium speed (80r/min) until the reaction type solvent is uniformly dispersed; and waiting for the next procedure under the state of slow stirring (40r/min) (without heat preservation);
(4) adding 18 parts by weight of liquid styrene-butadiene rubber into the mixed solution, firstly stirring at a low speed for 3-5min, and then stirring at a medium speed (100r/min) for about 5min until the liquid styrene-butadiene rubber is uniformly dispersed; and waiting for the next procedure under the state of slow stirring (40r/min) (without heat preservation);
(5) weighing 700 parts by weight of aggregate (containing 100 wt% of basalt and limestone mixture) according to the AC-10 grade, uniformly mixing, drying and storing for later use; and (3) mechanically mixing the normal-temperature asphalt liquid and the aggregate until the mixture is uniformly mixed to obtain the asphalt mixture.
Comparative example 4
The raw materials are from the same sources as in example 1.
The normal temperature asphalt mixture of the comparative example was prepared as follows:
(1) weighing and mixing raw materials according to a formula of 20 parts by weight of ricinoleic acid, 8 parts by weight of sodium dodecyl aminopropionate, 4 parts by weight of low molecular polyamide and 25 parts by weight of calcium lignosulfonate to obtain a reaction type solvent;
(2) heating 60 parts by weight of No. 70 matrix asphalt to 145 ℃, and keeping the temperature under the state of slow stirring (40r/min) for waiting for the next process;
(3) adding 24 parts by weight of reaction type solvent into No. 70 matrix asphalt, slowly stirring for 6min, and then stirring for about 5min at a medium speed (80r/min) until the reaction type solvent is uniformly dispersed; and waiting for the next procedure under the state of slow stirring (40r/min) (without heat preservation);
(4) adding 18 parts by weight of water-based epoxy resin into the mixed solution, firstly stirring at a low speed for 3-5min, and then stirring at a medium speed (100r/min) for about 5min until the water-based epoxy resin is uniformly dispersed; and waiting for the next procedure under the state of slow stirring (40r/min) (without heat preservation);
(5) adding 24 parts by weight of water-based epoxy resin into the mixed solution, firstly stirring at a low speed for 3-5min, and then stirring at a medium speed (80r/min) for about 5min until the water-based epoxy resin is uniformly dispersed (no white suspended matters); stirring for about 10min under a slow stirring state (50r/min) (without heat preservation), and thus finishing the preparation of the reactive normal-temperature liquid asphalt;
(6) weighing 700 parts by weight of aggregate (containing 25 weight percent of bentonite and ordinary portland cement mixture and 75 weight percent of basalt and limestone mixture) according to the AC-10 level, uniformly mixing, drying and storing for later use; and (3) mechanically mixing the normal-temperature asphalt liquid with the aggregate until the mixture is uniformly mixed to obtain a normal-temperature asphalt mixture. The particle size range of the curing agent is consistent with the particle size range specified in the AC-10 grading in Table 1.
Comparative example 5
The raw materials are from the same sources as in example 1.
The normal temperature asphalt mixture of the comparative example was prepared as follows:
(1) weighing and mixing raw materials according to a formula of 20 parts by weight of ricinoleic acid, 8 parts by weight of sodium dodecyl aminopropionate, 4 parts by weight of low molecular polyamide and 25 parts by weight of calcium lignosulfonate to obtain a reaction type solvent;
(2) heating 60 parts by weight of No. 70 matrix asphalt to 145 ℃, and keeping the temperature under the state of slow stirring (40r/min) for waiting for the next process;
(3) adding 24 parts by weight of reaction type solvent into No. 70 matrix asphalt, slowly stirring for 6min, and then stirring for about 5min at a medium speed (80r/min) until the reaction type solvent is uniformly dispersed; and waiting for the next procedure under the state of slow stirring (40r/min) (without heat preservation);
(4) adding 18 parts by weight of liquid styrene-butadiene rubber into the mixed solution, firstly stirring at a low speed for 3-5min, and then stirring at a medium speed (100r/min) for about 5min until the liquid styrene-butadiene rubber is uniformly dispersed; and waiting for the next procedure under the state of slow stirring (40r/min) (without heat preservation);
(5) adding 24 parts by weight of liquid styrene-butadiene rubber into the mixed solution, firstly stirring at a low speed for 3-5min, and then stirring at a medium speed (80r/min) for about 5min until the liquid styrene-butadiene rubber is uniformly dispersed (no white suspended matters); stirring for about 10min under a slow stirring state (50r/min) (without heat preservation), and thus finishing the preparation of the reactive normal-temperature liquid asphalt;
(6) weighing 700 parts by weight of aggregate (containing 25 weight percent of bentonite and ordinary portland cement mixture and 75 weight percent of basalt and limestone mixture) according to the AC-10 level, uniformly mixing, drying and storing for later use; and (3) mechanically mixing the normal-temperature asphalt liquid with the aggregate until the mixture is uniformly mixed to obtain a normal-temperature asphalt mixture. The particle size range of the curing agent is consistent with the particle size range specified in the AC-10 grading in Table 1.
Comparative example 6
The raw materials are from the same sources as in example 1.
The normal temperature asphalt mixture of this example was prepared as follows:
(1) weighing and mixing raw materials according to a formula of 20 parts by weight of ricinoleic acid, 8 parts by weight of sodium dodecyl aminopropionate, 4 parts by weight of low molecular polyamide and 25 parts by weight of lignin fiber to obtain a reaction type solvent;
(2) heating 60 parts by weight of No. 70 matrix asphalt to 145 ℃, and keeping the temperature under the state of slow stirring (40r/min) for waiting for the next process;
(3) adding 24 parts by weight of reaction type solvent into No. 70 matrix asphalt, slowly stirring for 6min, and then stirring for about 5min at a medium speed (80r/min) until the reaction type solvent is uniformly dispersed; and waiting for the next procedure under the state of slow stirring (40r/min) (without heat preservation);
(4) adding 18 parts by weight of liquid styrene-butadiene rubber into the mixed solution, firstly stirring at a low speed for 3-5min, and then stirring at a medium speed (100r/min) for about 5min until the liquid styrene-butadiene rubber is uniformly dispersed; and waiting for the next procedure under the state of slow stirring (40r/min) (without heat preservation);
(5) adding 24 parts by weight of water-based epoxy resin into the mixed solution, firstly stirring at a low speed for 3-5min, and then stirring at a medium speed (80r/min) for about 5min until the water-based epoxy resin is uniformly dispersed (no white suspended matters); stirring for about 10min under a slow stirring state (50r/min) (without heat preservation), and thus finishing the preparation of the reactive normal-temperature liquid asphalt;
(6) weighing 700 parts by weight of aggregate (containing 25 weight percent of bentonite and ordinary portland cement mixture and 75 weight percent of basalt and limestone mixture) according to the AC-10 level, uniformly mixing, drying and storing for later use; and (3) mechanically mixing the normal-temperature asphalt liquid with the aggregate until the mixture is uniformly mixed to obtain a normal-temperature asphalt mixture. The particle size range of the curing agent is consistent with the particle size range specified in the AC-10 grading in Table 1.
The asphalt mixtures obtained in the above examples and comparative examples were subjected to asphalt mixture performance tests, and the results are shown in table 2.
TABLE 2 Property parameters of the respective bituminous mixtures
| Test items | Standard of merit Require that | Practice of Example 1 | Practice of Example 2 | Practice of Example 3 | Practice of Example 4 | Comparison of Example 1 | Comparison of Example 2 | Comparison of Example 3 | Comparison of Example 4 | Comparison of Example 5 | Comparison of Example 6 |
| Initial stability (kN) | - | 5.43 | 4.65 | 3.84 | 4.76 | 4.81 | 2.49 | 2.13 | 5.12 | 1.87 | 4.5 |
| Stability of formation (kN) | ≥8 | 10.3 1 | 9.68 | 9.14 | 9.55 | 9.64 | 7.26 | 6.83 | 6.42 | 3.32 | 8.9 |
| Void ratio (%) | 3-5 | 4.4 | 4.3 | 5 | 4.9 | 3 | 3.2 | 3.5 | 4.2 | 4.4 | 2.3 |
| Asphalt saturation (%) | 65-75 | 74.9 | 73 | 74.2 | 74.3 | 75 | 75.3 | 65.7 | 73.5 | 74.1 | 72.3 |
| Residual stability (%) | ≥80 | 89.2 | 88.6 | 88.9 | 87.5 | 76.3 | 70.3 | 73.2 | 67.6 | 84.3 | 83.2 |
| Freeze-thaw split strength ratio (%) | ≥75 | 86.5 | 87.1 | 85.4 | 86.8 | 73.9 | 69.4 | 71.9 | 63.4 | 80.3 | 75.8 |
| Degree of dynamic stability (times/mm) | ≥ 2000 | 4364 | 4268 | 4194 | 4288 | 2304 | 2013 | 1832 | 2649 | 1474 | 1745 |
| Low temperature bending test Bad strain (mu epsilon) | ≥ 2000 | 2654 | 2643 | 2589 | 2597 | 1874 | 1782 | 2041 | 1345 | 1843 | 1904 |
From the above results, it can be seen that the asphalt mixtures of examples 1, 2, 3 and 4 all meet the performance requirements of hot-mix asphalt mixtures, meanwhile, the initial stability is high, the molding stability also exceeds the standard 8 kN requirement, the ratio of the residual stability to the freeze-thaw cleavage strength reflects the water stability of the asphalt mixture, the comparative example 1 shows that the crosslinking agent influences the crosslinking reaction of the liquid styrene-butadiene rubber, the aqueous epoxy resin and the asphalt, the water stability and the low-temperature crack resistance are only close to the standard requirement, the dynamic stability reflects the high-temperature performance of the asphalt mixture, namely the anti-rutting capability, the comparative example 3 lacks the waterborne epoxy resin, the high-temperature performance is obviously reduced, the low-temperature bending test failure strain reflects the low-temperature crack resistance of the asphalt mixture, comparative example 2 lacks liquid styrene-butadiene rubber, the high-temperature performance meets the standard requirements, but the low-temperature crack resistance is obviously reduced. In conclusion, under the synergistic effect of the reaction solvent, the liquid styrene-butadiene rubber and the aqueous epoxy resin, the performance of the asphalt mixture obtained by the reaction with the asphalt is further improved, the standard requirement of the hot-mix asphalt mixture is met, and the method is particularly suitable for paving a newly-built road surface.
In the comparative example 4, the aqueous epoxy resin is used for replacing liquid styrene-butadiene rubber, and the initial strength of the curing reaction is high, but the forming strength is reduced along with the increase of the aqueous epoxy resin, the low-temperature crack resistance is greatly reduced, the water stability is poor, and the viscosity is insufficient; in the comparative example 5, the liquid styrene-butadiene rubber replaces the water-based epoxy resin, so that the stability is extremely poor, the requirement of 3.5kN of cold-patch materials cannot be met, the high-temperature performance is insufficient, the low-temperature crack resistance cannot meet the requirement of a hot-mix asphalt mixture, the water stability is enhanced, and the viscosity is increased. In the comparative example 6, the calcium lignosulfonate is replaced by the lignocellulose, so that the molding strength meets the requirement, the water stability is improved, but the lignin fiber plays a role of a filler, so that the void ratio is reduced, the lignin fiber cannot participate in the crosslinking reaction of the liquid styrene-butadiene rubber, the aqueous epoxy resin and the asphalt, the high-temperature performance is obviously reduced, the low-temperature performance is not improved enough, and the standard requirement cannot be met. The data in table 2 show that, when the liquid styrene-butadiene rubber and the aqueous epoxy resin are used together, compared with the situation that each substance is added independently, the molding stability, the low-temperature bending property and the like of the obtained asphalt mixture are obviously improved, and the improvement degree is not a simple linear superposition relationship.
It will be apparent to those skilled in the art that various modifications and variations can be made in the specific embodiments of the present disclosure without departing from the scope or spirit of the disclosure. Other embodiments will be apparent to those skilled in the art from consideration of the specification. The specification and examples are exemplary only.
Claims (9)
1. A normal temperature asphalt mixture is characterized by comprising 50-70 parts by weight of asphalt, 15-30 parts by weight of curing agent, 10-30 parts by weight of reactive solvent, 15-20 parts by weight of rubber, 22-28 parts by weight of water-based epoxy resin and 650-950 parts by weight of aggregate;
the curing agent comprises 10-20 parts by weight of mineral powder and 5-25 parts by weight of cement;
the reaction type solvent contains 5-25 parts by weight of unsaturated fatty acid, 5-12 parts by weight of surfactant, 2-8 parts by weight of accelerator and 10-30 parts by weight of cross-linking agent; the cross-linking agent comprises one or more of sulfonated lignin, methylated lignin, esterified lignin, acylated lignin and alkylated lignin;
the rubber is at least one of liquid polybutadiene rubber, liquid styrene-butadiene rubber and liquid nitrile-butadiene rubber.
2. The normal-temperature asphalt mixture according to claim 1, wherein the mineral powder is at least one of bentonite, montmorillonite, vermiculite, illite and sepiolite powder; the cement is at least one of cement taking silicate cement, aluminate cement, sulphoaluminate cement, ferro-aluminate cement, fluoroaluminate cement, phosphate cement and volcanic ash as main components.
3. The normal-temperature asphalt mixture as defined in claim 1, wherein the unsaturated fatty acid is ricinoleic acid, the surfactant is sodium dodecylaminopropionate, the accelerator is low-molecular polyamide, and the crosslinking agent is calcium lignosulfonate.
4. A normal temperature asphalt mixture as defined in claim 3, wherein said reactive solvent comprises 20 parts by weight of ricinoleic acid, 8 parts by weight of sodium dodecylaminopropionate, 4 parts by weight of low molecular polyamide and 25 parts by weight of calcium lignosulfonate.
5. The normal-temperature asphalt mixture according to claim 1, wherein the water-based epoxy resin is at least one of bisphenol a water-based epoxy resin, bisphenol F water-based epoxy resin, polyphenol glycidyl ether water-based epoxy resin, aliphatic glycidyl ether water-based epoxy resin, glycidyl ester water-based epoxy resin, and glycidyl amine water-based epoxy resin.
6. An ambient temperature asphalt mixture according to claim 1, wherein said aggregate is at least one of igneous rock, sedimentary rock, metamorphic rock.
7. The normal-temperature asphalt mixture according to claim 6, wherein the igneous rock is at least one of granite, amphibole, gabby, diabase and basalt; the sedimentary rock is at least one of limestone, sandstone, shale and conglomerate; the metamorphic rock is at least one of marble rock, slate, schist, gneiss and quartzite.
8. A method for preparing an ordinary-temperature asphalt mixture according to any one of claims 1 to 7, which is characterized by comprising the following steps:
(1) heating 40-80 parts by weight of asphalt to 120-220 ℃, adding 10-30 parts by weight of reaction type solvent, stirring for 5-10min at a first stirring speed of 30-60 r/min, and then continuously stirring for 1-10min at a second stirring speed of 80-140 r/min to obtain a mixed solution;
(2) adding 15-25 parts by weight of rubber into the mixed solution, and dispersing to obtain suspended matters;
(3) adding 10-30 parts by weight of epoxy resin into the suspended matter, and stirring to obtain asphalt liquid;
(4) and determining the particle size distribution of the curing agent according to the grading and the type of the selected aggregate, and mixing the aggregate with the asphalt liquid to obtain the normal-temperature asphalt mixture.
9. A method for producing a normal-temperature asphalt mixture according to claim 8, wherein the normal-temperature asphalt mixture has an initial stability of 3.5kN or more and a molding stability of 8.0 kN or more.
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| CN111825993A (en) * | 2020-08-03 | 2020-10-27 | 长安大学 | Low-temperature cold-patch asphalt liquid and preparation method thereof |
| CN112010627A (en) * | 2020-09-07 | 2020-12-01 | 济南金曰公路工程有限公司 | Asphalt material mixing production process for asphalt pavement paving |
| CN112280325B (en) * | 2020-11-14 | 2022-07-15 | 苏州三正路面工程有限公司 | Anti-cracking asphalt and preparation method thereof |
| CN112662403A (en) * | 2020-12-23 | 2021-04-16 | 昂骏环境科技(上海)有限公司 | Method for preparing soil fixing agent by using modified clay |
| CN113233820B (en) * | 2021-04-24 | 2022-07-29 | 中城园林工程有限公司 | Asphalt mixture for paving and preparation method thereof |
| CN113683345A (en) * | 2021-09-06 | 2021-11-23 | 长沙理工大学 | Coral sand-doped AC-13 normal-temperature asphalt mixture and preparation method thereof |
| CN113620656A (en) * | 2021-09-08 | 2021-11-09 | 哈尔滨工业大学 | Preparation method of cold-mix fully-recycled asphalt mixture based on solvent-based liquid asphalt |
| CN113896487B (en) * | 2021-11-02 | 2023-04-25 | 长沙理工大学 | Preparation method and application of water-curing reaction type normal-temperature liquid asphalt and mixture thereof |
| CN118638429A (en) * | 2024-08-19 | 2024-09-13 | 四川快马路畅公路养护有限公司 | Quick asphalt net crack repairing agent |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102295445A (en) * | 2011-06-03 | 2011-12-28 | 长安大学 | Microwave heated and cured emulsified asphalt concrete material and preparation method thereof |
| CN102505601A (en) * | 2011-11-21 | 2012-06-20 | 重庆大学 | Fast repairing method for asphalt concrete pavement |
| CN102585528A (en) * | 2012-02-23 | 2012-07-18 | 南京大学 | High-performance epoxy bitumen mixture easy to construct and maintain and preparation method thereof |
| CN105645850A (en) * | 2016-01-11 | 2016-06-08 | 北京建筑大学 | Pavement quick-repair asphalt mixture, and preparation method and application method thereof |
-
2019
- 2019-12-12 CN CN201911270256.3A patent/CN110713362B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102295445A (en) * | 2011-06-03 | 2011-12-28 | 长安大学 | Microwave heated and cured emulsified asphalt concrete material and preparation method thereof |
| CN102505601A (en) * | 2011-11-21 | 2012-06-20 | 重庆大学 | Fast repairing method for asphalt concrete pavement |
| CN102585528A (en) * | 2012-02-23 | 2012-07-18 | 南京大学 | High-performance epoxy bitumen mixture easy to construct and maintain and preparation method thereof |
| CN105645850A (en) * | 2016-01-11 | 2016-06-08 | 北京建筑大学 | Pavement quick-repair asphalt mixture, and preparation method and application method thereof |
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