CN117486537A - Anti-rutting cement bridge deck asphalt pavement material and preparation method thereof - Google Patents
Anti-rutting cement bridge deck asphalt pavement material and preparation method thereof Download PDFInfo
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- CN117486537A CN117486537A CN202311811212.3A CN202311811212A CN117486537A CN 117486537 A CN117486537 A CN 117486537A CN 202311811212 A CN202311811212 A CN 202311811212A CN 117486537 A CN117486537 A CN 117486537A
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- 239000010426 asphalt Substances 0.000 title claims abstract description 82
- 239000004568 cement Substances 0.000 title claims abstract description 55
- 239000000463 material Substances 0.000 title claims abstract description 35
- 238000002360 preparation method Methods 0.000 title abstract description 13
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical class C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 claims abstract description 75
- 239000000203 mixture Substances 0.000 claims abstract description 40
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 30
- 239000011159 matrix material Substances 0.000 claims abstract description 27
- 239000000843 powder Substances 0.000 claims abstract description 24
- 229910052500 inorganic mineral Inorganic materials 0.000 claims abstract description 21
- 239000011707 mineral Substances 0.000 claims abstract description 21
- 238000000034 method Methods 0.000 claims abstract description 4
- 238000003756 stirring Methods 0.000 claims description 80
- 239000004696 Poly ether ether ketone Substances 0.000 claims description 44
- 229920002530 polyetherether ketone Polymers 0.000 claims description 44
- 238000006243 chemical reaction Methods 0.000 claims description 35
- 229920000049 Carbon (fiber) Polymers 0.000 claims description 34
- 239000004917 carbon fiber Substances 0.000 claims description 34
- YMWUJEATGCHHMB-UHFFFAOYSA-N Dichloromethane Chemical compound ClCCl YMWUJEATGCHHMB-UHFFFAOYSA-N 0.000 claims description 33
- ILAHWRKJUDSMFH-UHFFFAOYSA-N boron tribromide Chemical compound BrB(Br)Br ILAHWRKJUDSMFH-UHFFFAOYSA-N 0.000 claims description 28
- BWHMMNNQKKPAPP-UHFFFAOYSA-L potassium carbonate Chemical compound [K+].[K+].[O-]C([O-])=O BWHMMNNQKKPAPP-UHFFFAOYSA-L 0.000 claims description 24
- 239000007795 chemical reaction product Substances 0.000 claims description 21
- 238000001035 drying Methods 0.000 claims description 20
- YXFVVABEGXRONW-UHFFFAOYSA-N Toluene Chemical compound CC1=CC=CC=C1 YXFVVABEGXRONW-UHFFFAOYSA-N 0.000 claims description 18
- CSCPPACGZOOCGX-UHFFFAOYSA-N Acetone Chemical compound CC(C)=O CSCPPACGZOOCGX-UHFFFAOYSA-N 0.000 claims description 16
- 238000001816 cooling Methods 0.000 claims description 16
- 238000005406 washing Methods 0.000 claims description 16
- LAQYHRQFABOIFD-UHFFFAOYSA-N 2-methoxyhydroquinone Chemical compound COC1=CC(O)=CC=C1O LAQYHRQFABOIFD-UHFFFAOYSA-N 0.000 claims description 14
- 125000002887 hydroxy group Chemical group [H]O* 0.000 claims description 14
- 125000000956 methoxy group Chemical group [H]C([H])([H])O* 0.000 claims description 13
- 239000011248 coating agent Substances 0.000 claims description 12
- 238000000576 coating method Methods 0.000 claims description 12
- 239000012065 filter cake Substances 0.000 claims description 12
- 239000007788 liquid Substances 0.000 claims description 12
- 229910000027 potassium carbonate Inorganic materials 0.000 claims description 12
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims description 11
- 238000004140 cleaning Methods 0.000 claims description 10
- AQQBRCXWZZAFOK-UHFFFAOYSA-N 2,2,3,3,4,4,5,5,6,6,7,7,8,8,8-pentadecafluorooctanoyl chloride Chemical compound FC(F)(F)C(F)(F)C(F)(F)C(F)(F)C(F)(F)C(F)(F)C(F)(F)C(Cl)=O AQQBRCXWZZAFOK-UHFFFAOYSA-N 0.000 claims description 8
- KSCAZPYHLGGNPZ-UHFFFAOYSA-N 3-chloropropyl(triethoxy)silane Chemical compound CCO[Si](OCC)(OCC)CCCCl KSCAZPYHLGGNPZ-UHFFFAOYSA-N 0.000 claims description 8
- 238000002156 mixing Methods 0.000 claims description 8
- DBMJMQXJHONAFJ-UHFFFAOYSA-M Sodium laurylsulphate Chemical compound [Na+].CCCCCCCCCCCCOS([O-])(=O)=O DBMJMQXJHONAFJ-UHFFFAOYSA-M 0.000 claims description 6
- HXJUTPCZVOIRIF-UHFFFAOYSA-N sulfolane Chemical compound O=S1(=O)CCCC1 HXJUTPCZVOIRIF-UHFFFAOYSA-N 0.000 claims description 6
- 239000002244 precipitate Substances 0.000 claims description 5
- SECXISVLQFMRJM-UHFFFAOYSA-N N-Methylpyrrolidone Chemical compound CN1CCCC1=O SECXISVLQFMRJM-UHFFFAOYSA-N 0.000 claims description 4
- 239000005457 ice water Substances 0.000 claims description 4
- 239000002245 particle Substances 0.000 claims description 4
- 230000001376 precipitating effect Effects 0.000 claims description 4
- 238000009210 therapy by ultrasound Methods 0.000 claims description 4
- 238000003828 vacuum filtration Methods 0.000 claims description 4
- 235000019738 Limestone Nutrition 0.000 claims description 3
- 239000006028 limestone Substances 0.000 claims description 3
- 239000003469 silicate cement Substances 0.000 claims description 3
- 238000000967 suction filtration Methods 0.000 claims description 3
- 238000002390 rotary evaporation Methods 0.000 claims 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 13
- 201000010099 disease Diseases 0.000 abstract description 5
- 208000037265 diseases, disorders, signs and symptoms Diseases 0.000 abstract description 5
- 239000002994 raw material Substances 0.000 abstract description 4
- 230000008569 process Effects 0.000 abstract description 2
- 238000010438 heat treatment Methods 0.000 description 23
- 238000010992 reflux Methods 0.000 description 21
- OKKJLVBELUTLKV-UHFFFAOYSA-N Methanol Chemical compound OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 description 15
- 238000001291 vacuum drying Methods 0.000 description 15
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 12
- 230000000052 comparative effect Effects 0.000 description 10
- 239000012153 distilled water Substances 0.000 description 9
- 229910052757 nitrogen Inorganic materials 0.000 description 6
- 238000012360 testing method Methods 0.000 description 6
- 229920001971 elastomer Polymers 0.000 description 5
- LSQARZALBDFYQZ-UHFFFAOYSA-N 4,4'-difluorobenzophenone Chemical compound C1=CC(F)=CC=C1C(=O)C1=CC=C(F)C=C1 LSQARZALBDFYQZ-UHFFFAOYSA-N 0.000 description 4
- 238000001914 filtration Methods 0.000 description 4
- 239000010410 layer Substances 0.000 description 4
- KPUWHANPEXNPJT-UHFFFAOYSA-N disiloxane Chemical class [SiH3]O[SiH3] KPUWHANPEXNPJT-UHFFFAOYSA-N 0.000 description 3
- 238000001704 evaporation Methods 0.000 description 3
- 239000002904 solvent Substances 0.000 description 3
- 239000002699 waste material Substances 0.000 description 3
- 230000009471 action Effects 0.000 description 2
- 239000008186 active pharmaceutical agent Substances 0.000 description 2
- 238000007792 addition Methods 0.000 description 2
- 238000005452 bending Methods 0.000 description 2
- 239000004567 concrete Substances 0.000 description 2
- 125000005373 siloxane group Chemical group [SiH2](O*)* 0.000 description 2
- 238000007711 solidification Methods 0.000 description 2
- 230000008023 solidification Effects 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- VTYYLEPIZMXCLO-UHFFFAOYSA-L Calcium carbonate Chemical compound [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 description 1
- 239000004215 Carbon black (E152) Substances 0.000 description 1
- 229920002209 Crumb rubber Polymers 0.000 description 1
- 239000011398 Portland cement Substances 0.000 description 1
- 206010039203 Road traffic accident Diseases 0.000 description 1
- 238000005299 abrasion Methods 0.000 description 1
- 150000001263 acyl chlorides Chemical group 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 150000001721 carbon Chemical class 0.000 description 1
- 239000006229 carbon black Substances 0.000 description 1
- 125000001309 chloro group Chemical group Cl* 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 230000001335 demethylating effect Effects 0.000 description 1
- 238000009792 diffusion process Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 230000003628 erosive effect Effects 0.000 description 1
- 238000011156 evaluation Methods 0.000 description 1
- 239000012761 high-performance material Substances 0.000 description 1
- 229930195733 hydrocarbon Natural products 0.000 description 1
- 150000002430 hydrocarbons Chemical class 0.000 description 1
- 230000007062 hydrolysis Effects 0.000 description 1
- 238000006460 hydrolysis reaction Methods 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 239000002346 layers by function Substances 0.000 description 1
- 238000011068 loading method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000003607 modifier Substances 0.000 description 1
- 239000008041 oiling agent Substances 0.000 description 1
- 230000035515 penetration Effects 0.000 description 1
- 238000011056 performance test Methods 0.000 description 1
- 125000001997 phenyl group Chemical group [H]C1=C([H])C([H])=C(*)C([H])=C1[H] 0.000 description 1
- 230000000379 polymerizing effect Effects 0.000 description 1
- 239000000047 product Substances 0.000 description 1
- 239000011241 protective layer Substances 0.000 description 1
- 238000005086 pumping Methods 0.000 description 1
- 230000002787 reinforcement Effects 0.000 description 1
- SCPYDCQAZCOKTP-UHFFFAOYSA-N silanol Chemical compound [SiH3]O SCPYDCQAZCOKTP-UHFFFAOYSA-N 0.000 description 1
- 238000010998 test method Methods 0.000 description 1
- 238000005303 weighing 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
- C04B2111/00474—Uses not provided for elsewhere in C04B2111/00
- C04B2111/0075—Uses not provided for elsewhere in C04B2111/00 for road construction
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Ceramic Engineering (AREA)
- Materials Engineering (AREA)
- Structural Engineering (AREA)
- Organic Chemistry (AREA)
- Compositions Of Macromolecular Compounds (AREA)
Abstract
The invention relates to the field of bridge deck pavement, in particular to an anti-rut cement bridge deck asphalt pavement material and a preparation method thereof, which are used for solving the problems that the existing bridge deck pavement is easy to generate rut, crack and other diseases and is not suitable for being used under extreme weather conditions; the preparation method firstly prepares a modified carbon fiber in the process of preparing the asphalt paving material, takes the modified carbon fiber as the raw material of the asphalt paving material, and further comprises the following raw materials: matrix asphalt, anti-rutting agent, cement, mineral powder and aggregate; by adding the rutting resistant agent and the modified carbon fiber into the asphalt pavement material, the rutting resistant agent can effectively enhance the rutting resistance of the asphalt mixture, meanwhile, the asphalt mixture also has better water stability, the modified carbon fiber can better disperse the stress at the crack tip, and the high-low temperature resistance, the water stability and the fatigue resistance of the asphalt mixture can be greatly improved.
Description
Technical Field
The invention relates to the field of bridge deck pavement, in particular to an anti-rutting cement bridge deck asphalt pavement material and a preparation method thereof.
Background
The bridge deck pavement is taken as an important component of a bridge driving system, on one hand, the bridge deck is protected from the influence of environmental factors such as vehicle tire or track abrasion, rain erosion and the like, and on the other hand, the bridge deck is directly subjected to vehicle load, resists load impact, transfers driving load and disperses, and participates in the stress of the bridge deck. In addition, bridge deck pavement is the extension of road pavement functions in bridge engineering, and the performance of the bridge deck pavement can directly influence the driving safety and the comfort of vehicles. The bridge deck pavement is not only a protective layer of the bridge, but also a stress structural layer and a using functional layer of the bridge, and the quality of the bridge pavement directly influences the service life of the bridge.
At present, cement concrete bridges occupy a large proportion in road bridges in China, a bridge deck pavement structure is basically a rigid-flexible composite structure formed by additionally paving a cement concrete leveling layer on a bridge deck, then paving a waterproof bonding layer, and then paving asphalt mixture. Under extreme weather conditions, such as summer and winter snow ice, and diseases such as ruts, cracks and the like are caused to occur early in bridge deck pavement under the action of vehicle load, and the diseases not only can influence the service performance of the bridge, but also can cause traffic accidents when serious, so that irrecoverable losses are caused.
How to improve the existing bridge deck pavement and easily cause diseases such as ruts, cracks and the like, and not suitable for being used under extreme weather conditions is a key of the invention, and an anti-rut cement bridge deck asphalt pavement material and a preparation method thereof are needed to solve the problems.
Disclosure of Invention
In order to overcome the technical problems, the invention aims to provide an anti-rutting cement bridge deck asphalt pavement material and a preparation method thereof: the matrix asphalt and the aggregate are respectively preheated and then are added into a mixer together, the rut resistant agent is added and uniformly stirred to obtain a mixture, the matrix asphalt is added into the mixer and is mixed with the mixture to obtain a mixture, the modified carbon fiber, the cement and the mineral powder are added into the mixer and are mixed with the mixture to obtain the rut resistant cement bridge deck asphalt paving material, and the problems that the conventional bridge deck pavement is easy to cause rut, crack and other diseases and is not applicable to use under extreme weather conditions are solved.
The aim of the invention can be achieved by the following technical scheme:
an anti-rutting cement bridge deck asphalt pavement material comprises the following components in parts by weight:
15-25 parts of matrix asphalt, 0.5-2.5 parts of anti-rutting agent, 1-5 parts of modified carbon fiber, 4-10 parts of cement, 2-6 parts of mineral powder and 55-65 parts of aggregate.
As a further scheme of the invention: the modified carbon fiber is prepared by the following steps:
step S1: adding 2-methoxy hydroquinone, 4' -difluorobenzophenone, anhydrous potassium carbonate, sulfolane and toluene into a three-neck flask provided with a stirrer, a thermometer, an air duct and a reflux condenser, introducing nitrogen for protection, stirring and reacting for 20-30min under the conditions of 20-25 ℃ and 250-300r/min, heating to 140-145 ℃ and continuing stirring and reacting for 2-2.5h, heating to 160-165 ℃ and continuing stirring and reacting for 5-6h, cooling the reaction product to 80-85 ℃ after the reaction is finished, pouring into ice water, precipitating, vacuum suction filtering, washing a filter cake with anhydrous methanol and distilled water for 3-5 times in sequence, placing in a vacuum drying box, and drying for 8-10h under the conditions of 110-120 ℃ to obtain methoxy polyether ether ketone;
step S2: adding methoxy polyether ether ketone and methylene dichloride into a three-neck flask provided with a stirrer, a thermometer and a constant pressure dropping funnel, stirring at the temperature of minus 30 ℃ and the stirring speed of 250-300r/min for reacting for 20-30min, then adding boron tribromide solution dropwise while stirring, controlling the dropping speed to be 1-2 drops/s, heating to 20-25 ℃ after the dropping is finished, continuing stirring for reacting for 1-1.5h, heating to 40-45 ℃ and continuing stirring for reacting for 6-8h, pouring the reaction product into absolute ethyl alcohol after the reaction is finished, then carrying out vacuum suction filtration, washing a filter cake with absolute ethyl alcohol and distilled water for 3-5 times sequentially, then placing in a vacuum drying box, and drying at the temperature of 100-110 ℃ for 10-15h to obtain hydroxyl polyether ether ketone;
step S3: adding hydroxyl-containing polyether-ether-ketone, anhydrous potassium carbonate and methylene dichloride into a three-neck flask provided with a stirrer, a thermometer, an air duct and a reflux condenser, introducing nitrogen for protection, stirring and reacting for 20-30min under the condition that the temperature is 20-25 ℃ and the stirring rate is 250-300r/min, then adding chloropropyl triethoxysilane and perfluorooctanoyl chloride, continuously stirring and reacting for 5-15min, heating to reflux, continuously stirring and reacting for 10-15h, cooling the reaction product to room temperature after the reaction is finished, rotationally evaporating to remove the solvent, washing for 3-5 times with absolute ethyl alcohol, then placing in a vacuum drying box, and drying for 15-20h under the condition that the temperature is 70-75 ℃ to obtain modified polyether-ether-ketone;
step S4: adding modified polyether-ether-ketone, sodium dodecyl sulfate and N-methyl pyrrolidone into a three-neck flask with a stirrer and a thermometer, and stirring and reacting for 2-3h under the conditions that the temperature is 20-25 ℃ and the stirring speed is 250-300r/min to obtain modified coating liquid;
step S5: adding carbon fiber and acetone into a three-neck flask provided with a stirrer, a thermometer and a reflux condenser, stirring and reacting for 10-15min at the temperature of 20-25 ℃ and the stirring speed of 250-300r/min, heating to reflux, continuing stirring and reacting for 3-5h, cooling the reaction product to room temperature after the reaction is finished, performing vacuum filtration, washing a filter cake with absolute ethyl alcohol and distilled water for 3-5 times in sequence, and then placing in a vacuum drying box, and drying for 4-5h at the temperature of 90-100 ℃ to obtain the surface-cleaning carbon fiber;
step S6: adding the surface-cleaned carbon fiber and the modified coating liquid into a three-neck flask provided with a stirrer, a thermometer and a reflux condenser, carrying out ultrasonic treatment for 30-40min under the condition of 200-300W of ultrasonic power, stirring and reacting for 1-2h under the condition of 20-25 ℃ and 250-300r/min of stirring rate, heating to reflux, continuing stirring and reacting for 8-10h, cooling the reaction product to room temperature after the reaction is finished, centrifuging, placing the precipitate in a vacuum drying oven, and drying for 4-5h under the condition of 90-100 ℃ to obtain the modified carbon fiber.
As a further scheme of the invention: the dosage ratio of the 2-methoxy hydroquinone, the 4,4' -difluorobenzophenone, the anhydrous potassium carbonate, the sulfolane and the toluene in the step S1 is 10mmol:10mmol:13-15mmol:20-30mL:15-20mL.
As a further scheme of the invention: the dosage ratio of the solution containing methoxy polyether ether ketone, methylene dichloride and boron tribromide in the step S2 is 5g:30-45mL:45-50mL, wherein the boron tribromide solution is a solution with the mass fraction of 10-12% formed by dissolving boron tribromide in methylene dichloride.
As a further scheme of the invention: the dosage ratio of the hydroxyl-containing polyether-ether-ketone, anhydrous potassium carbonate, methylene dichloride, chloropropyl triethoxysilane and perfluorooctanoyl chloride in the step S3 is 5g:1.5-2g:50-60mL:1-5g:1-5g.
As a further scheme of the invention: the dosage ratio of the modified polyether ether ketone to the sodium dodecyl sulfate to the N-methyl pyrrolidone in the step S4 is 3-11g:0.3-0.7g:55-60mL.
As a further scheme of the invention: the dosage ratio of the carbon fiber to the acetone in the step S5 is 5g:50-60mL, wherein the carbon fiber is T300 type carbon fiber.
As a further scheme of the invention: the dosage ratio of the surface cleaning carbon fiber to the modified coating liquid in the step S6 is 5g:150-200mL.
As a further scheme of the invention: a preparation method of an anti-rutting cement bridge deck asphalt pavement material comprises the following steps:
step one: 15-25 parts of matrix asphalt, 0.5-2.5 parts of anti-rutting agent, 1-5 parts of modified carbon fiber, 4-10 parts of cement, 2-6 parts of mineral powder and 55-65 parts of aggregate are weighed according to parts by weight for standby;
step two: placing matrix asphalt in an oven, preheating for 30-40min at 160-170 ℃, placing aggregate in the oven, preheating for 30-40min at 170-180 ℃, then adding the mixture into a mixer, adding an anti-rut agent, and uniformly stirring to obtain a mixture;
step three: adding matrix asphalt into a mixer, and mixing with the mixture uniformly to obtain a mixture;
step four: adding the modified carbon fiber, cement and mineral powder into a mixer, mixing with the mixture, and uniformly stirring to obtain the rut-resistant cement bridge deck asphalt paving material.
As a further scheme of the invention: the matrix asphalt is 90 # matrix asphalt.
As a further scheme of the invention: the anti-rut agent is one of PR anti-rut agent and MA103 anti-rut agent.
As a further scheme of the invention: the cement is Portland cement with the strength grade of 32.5R.
As a further scheme of the invention: the mineral powder is S95-grade finely ground limestone mineral powder.
As a further scheme of the invention: the aggregate is basalt, and the particle size of the basalt is 5-15mm.
The invention has the beneficial effects that:
the invention comprises the steps of respectively preheating matrix asphalt and aggregate, then adding the mixture into a mixer together, adding an anti-rutting agent, stirring uniformly to obtain a mixture, adding the matrix asphalt into the mixer, stirring with the mixture uniformly, obtaining a mixture, adding modified carbon fiber, cement and mineral powder into the mixer, stirring with the mixture, and stirring uniformly to obtain the anti-rutting cement bridge deck asphalt paving material; according to the preparation method, the anti-rutting agent and the modified carbon fiber are added into the asphalt paving material of the anti-rutting cement bridge deck, the anti-rutting agent can effectively enhance the anti-rutting capability of the asphalt mixture, meanwhile, the modified carbon fiber has high tensile strength and stiffness modulus, after the modified carbon fiber is uniformly distributed in the asphalt mixture, on one hand, the toughness and strength of the asphalt mixture can be exerted and enhanced by means of the built three-dimensional reinforcement net, on the other hand, once asphalt pavement is cracked, the crack is easily generated, the stress concentration phenomenon is easily generated at the crack position to rapidly spread the crack, the modified carbon fiber is doped to better disperse the stress at the crack point, further diffusion of the crack is prevented, and the high-low temperature resistance, the water stability and the fatigue resistance of the asphalt mixture can be greatly improved;
in the process of preparing the rutting-resistant cement bridge deck asphalt paving material, firstly, preparing a modified carbon fiber, firstly, polymerizing 2-methoxy hydroquinone and 4,4' -difluorobenzophenone to form methoxy-containing polyether-ether-ketone, then, demethylating methoxy groups on the methoxy-containing polyether-ether-ketone under the action of boron tribromide to form hydroxyl-containing polyether-ether-ketone, then, modifying the hydroxyl-containing polyether-ether-ketone by using chloropropyl triethoxysilane and perfluoro octanoyl chloride, reacting chlorine atoms on the chloropropyl triethoxysilane and acyl chloride groups on the perfluoro octanoyl chloride with the hydroxyl groups on the hydroxyl-polyether-ether-ketone to obtain modified polyether-ether-ketone, introducing siloxane groups and a large number of C-F bonds, dissolving the modified polyether-ether-ketone to prepare a modified coating liquid, then, treating the carbon fiber by using acetone to remove oiling agents and impurities on the surface of the carbon fiber to obtain surface cleaning carbon fiber, and then, treating the surface cleaning carbon fiber in the modified coating liquid to enable the modified polyether-ether-ketone to be wrapped on the outer part of the surface cleaning carbon fiber to form a layer of the modified carbon fiber, and obtaining the modified carbon fiber; the modified carbon fiber is composed of carbon fiber and modified polyether ether ketone wrapped outside the carbon fiber, the carbon fiber is a high-performance material with the advantages of high strength, high rigidity and the like, the molecular structure of the modified polyether ether ketone contains a large number of benzene ring structures, the modified polyether ether ketone is endowed with good thermal stability and rigidity, the high-temperature resistance and mechanical strength of the modified carbon fiber are further improved, siloxane groups and a large number of C-F bonds are also contained, after the siloxane is hydrolyzed to form silanol, the siloxane can be dehydrated and condensed with hydroxyl groups on the carbon fiber, the siloxane can also react with other raw materials in an asphalt mixture, the modified carbon fiber can be uniformly dispersed in the asphalt mixture and can be connected with other raw materials in a chemical bond mode, the modified carbon fiber can further expand the performance of the asphalt mixture, the existence of a large number of C-F bonds is endowed with good hydrolysis resistance, corrosion resistance and lubricity, the anti-rutting cement bridge deck pavement material is not easy to damage, the anti-rutting cement bridge deck wear resistance is improved, after the modified polyether ether ketone is combined with the carbon fiber and the modified polyether ether ketone, the modified polyether ether ketone can protect the carbon fiber from breaking and can be obviously improved to the asphalt pavement effect of the asphalt bridge deck pavement.
Description of the embodiments
The technical solutions of the embodiments of the present invention will be clearly and completely described below in conjunction with the embodiments of the present invention, and it is apparent that the described embodiments are only some embodiments of the present invention, not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
Example 1
The embodiment is a preparation method of modified carbon fiber, comprising the following steps:
step S1: adding 10mmol of 2-methoxy hydroquinone, 10mmol of 4,4' -difluorobenzophenone, 13mmol of anhydrous potassium carbonate, 20mL of sulfolane and 15mL of toluene into a three-neck flask provided with a stirrer, a thermometer, an air duct and a reflux condenser, introducing nitrogen for protection, stirring at a temperature of 20 ℃ and a stirring rate of 250r/min for reaction for 20min, heating to 140 ℃ for continuous stirring for reaction for 2h, heating to 160 ℃ for continuous stirring for reaction for 1h, heating to 210 ℃ for continuous stirring for reaction for 5h, cooling the reaction product to 80 ℃ after the reaction is finished, pouring into ice water, precipitating, vacuum filtering, washing a filter cake with anhydrous methanol and distilled water for 3 times in sequence, then placing in a vacuum drying box, and drying at a temperature of 110 ℃ for 8h to obtain methoxy polyether ether ketone;
step S2: adding 5g of methoxy polyether ether ketone and 30mL of methylene dichloride into a three-neck flask provided with a stirrer, a thermometer and a constant pressure dropping funnel, stirring at the temperature of minus 30 ℃ and the stirring speed of 250r/min for reaction for 20min, then adding 45mL of boron tribromide solution which is formed by dissolving 45mL of boron tribromide in methylene dichloride dropwise while stirring, continuously stirring for reaction for 1h under the condition of heating to 20 ℃ after the dripping is finished, continuously stirring for reaction for 6h under the condition of heating to 40 ℃, pouring the reaction product into absolute ethyl alcohol after the reaction is finished, vacuum-pumping, washing a filter cake with absolute methyl alcohol and distilled water for 3 times sequentially, then placing in a vacuum drying box, and drying for 10h under the condition of 100 ℃ to obtain hydroxyl polyether ether ketone;
step S3: adding 5g of hydroxyl-containing polyether-ether-ketone, 1.5g of anhydrous potassium carbonate and 50mL of methylene dichloride into a three-neck flask provided with a stirrer, a thermometer, an air duct and a reflux condenser, introducing nitrogen for protection, stirring and reacting for 20min under the condition that the temperature is 20 ℃ and the stirring rate is 250r/min, adding 1g of chloropropyl triethoxysilane and 1g of perfluorooctanoyl chloride, continuously stirring and reacting for 5min, heating to reflux, continuously stirring and reacting for 10h, cooling the reaction product to room temperature after the reaction is finished, rotationally evaporating to remove the solvent, washing for 3 times with absolute ethyl alcohol, and then placing in a vacuum drying box, and drying for 15h under the condition that the temperature is 70 ℃ to obtain modified polyether-ether-ketone;
step S4: 3g of modified polyether-ether-ketone, 0.3g of sodium dodecyl sulfate and 55-mLN-methyl pyrrolidone are added into a three-neck flask provided with a stirrer and a thermometer, and stirred and reacted for 2 hours under the conditions that the temperature is 20 ℃ and the stirring speed is 250r/min to obtain modified coating liquid;
step S5: adding 5g of T300 type carbon fiber and 50mL of acetone into a three-neck flask provided with a stirrer, a thermometer and a reflux condenser, stirring and reacting for 10min at the temperature of 20 ℃ and the stirring speed of 250r/min, heating to reflux, continuing stirring and reacting for 3h, cooling the reaction product to room temperature after the reaction is finished, performing vacuum filtration, washing a filter cake with absolute ethyl alcohol and distilled water for 3 times in sequence, and then placing in a vacuum drying box, and drying for 4h at the temperature of 90 ℃ to obtain the surface-cleaning carbon fiber;
step S6: adding 5g of surface-cleaning carbon fiber and 150mL of modified coating liquid into a three-neck flask provided with a stirrer, a thermometer and a reflux condenser, carrying out ultrasonic treatment for 30min under the condition of 200W of ultrasonic power, stirring and reacting for 1h under the condition of 20 ℃ and 250r/min of stirring rate, heating to reflux, continuing stirring and reacting for 8h, cooling the reaction product to room temperature after the reaction is finished, centrifuging, placing the precipitate in a vacuum drying oven, and drying for 4h under the condition of 90 ℃ to obtain the modified carbon fiber.
Example 2
The embodiment is a preparation method of modified carbon fiber, comprising the following steps:
step S1: adding 10mmol of 2-methoxy hydroquinone, 10mmol of 4,4' -difluorobenzophenone, 15mmol of anhydrous potassium carbonate, 30mL of sulfolane and 20mL of toluene into a three-neck flask provided with a stirrer, a thermometer, an air duct and a reflux condenser, introducing nitrogen for protection, stirring and reacting for 30min under the condition of 25 ℃ and 300r/min, heating to 145 ℃ for 2.5h, heating to 165 ℃ for 1.5h, heating to 220 ℃ for 6h, cooling the reaction product to 85 ℃ after the reaction is finished, pouring into ice water, precipitating, vacuum filtering, washing a filter cake with anhydrous methanol and distilled water for 5 times in sequence, placing in a vacuum drying box, and drying for 10h under the condition of 120 ℃ to obtain methoxy polyether ether ketone;
step S2: adding 5g of methoxy polyether ether ketone and 45mL of methylene dichloride into a three-neck flask provided with a stirrer, a thermometer and a constant pressure dropping funnel, stirring and reacting for 30min at the temperature of minus 30 ℃ under the stirring speed of 300r/min, then adding 50mL of boron tribromide into a boron tribromide solution which is formed by dissolving 50mL of boron tribromide in methylene dichloride dropwise while stirring, continuously stirring and reacting for 1.5h under the condition of heating to 25 ℃ after the dripping is finished, continuously stirring and reacting for 8h under the condition of heating to 45 ℃, pouring a reaction product into absolute ethyl alcohol after the reaction is finished, vacuum filtering, washing a filter cake with absolute methyl alcohol and distilled water for 5 times sequentially, then placing in a vacuum drying box, and drying for 15h under the temperature of 110 ℃ to obtain hydroxyl polyether ether ketone;
step S3: adding 5g of hydroxyl-containing polyether-ether-ketone, 2g of anhydrous potassium carbonate and 60mL of dichloromethane into a three-neck flask provided with a stirrer, a thermometer, an air duct and a reflux condenser, introducing nitrogen for protection, stirring and reacting for 30min under the condition that the temperature is 25 ℃ and the stirring rate is 300r/min, adding 5g of chloropropyl triethoxysilane and 5g of perfluoro octanoyl chloride, continuously stirring and reacting for 15min, heating to reflux, continuously stirring and reacting for 15h, cooling the reaction product to room temperature after the reaction is finished, rotationally evaporating to remove the solvent, washing for 5 times with absolute ethyl alcohol, and then placing in a vacuum drying box, and drying for 20h under the condition that the temperature is 75 ℃ to obtain modified polyether-ether-ketone;
step S4: adding 11g of modified polyether-ether-ketone, 0.7g of sodium dodecyl sulfate and 60 mLN-methyl pyrrolidone into a three-neck flask with a stirrer and a thermometer, and stirring and reacting for 3 hours at the temperature of 25 ℃ and the stirring speed of 300r/min to obtain a modified coating liquid;
step S5: adding 5g of T300 type carbon fiber and 60mL of acetone into a three-neck flask provided with a stirrer, a thermometer and a reflux condenser, stirring and reacting for 15min at the temperature of 25 ℃ and the stirring speed of 300r/min, heating to reflux, continuing stirring and reacting for 5h, cooling the reaction product to room temperature after the reaction is finished, performing vacuum filtration, washing a filter cake with absolute ethyl alcohol and distilled water for 5 times in sequence, and then placing in a vacuum drying box, and drying for 5h at the temperature of 100 ℃ to obtain the surface-cleaning carbon fiber;
step S6: adding 5g of surface-cleaning carbon fiber and 200mL of modified coating liquid into a three-neck flask provided with a stirrer, a thermometer and a reflux condenser, carrying out ultrasonic treatment for 40min under the condition of ultrasonic power of 300W, stirring and reacting for 2h under the condition of 25 ℃ and stirring speed of 300r/min, heating to reflux, continuing stirring and reacting for 10h, cooling the reaction product to room temperature after the reaction is finished, centrifuging, placing the precipitate in a vacuum drying oven, and drying for 5h under the condition of 100 ℃ to obtain the modified carbon fiber.
Example 3
The embodiment is a preparation method of an anti-rutting cement bridge deck asphalt paving material, which comprises the following steps:
step one: 15 parts of matrix asphalt, 0.5 part of anti-rutting agent, 1 part of modified carbon fiber, 4 parts of cement, 2 parts of mineral powder and 55 parts of aggregate are weighed according to parts by weight for standby; the matrix asphalt is 90 # matrix asphalt; the anti-rut agent is PR anti-rut agent; the modified carbon fiber is the modified carbon fiber in example 1; the cement is silicate cement with the strength grade of 32.5R; the mineral powder is S95-grade fine limestone mineral powder; the aggregate is basalt, and the particle size of the basalt is 15mm;
step two: placing matrix asphalt in an oven, preheating for 30min at 160 ℃, placing aggregate in the oven, preheating for 30min at 170 ℃, then adding the aggregate into a mixer together, adding an anti-rutting agent, and uniformly stirring to obtain a mixture;
step three: adding matrix asphalt into a mixer, and mixing with the mixture uniformly to obtain a mixture;
step four: adding the modified carbon fiber, cement and mineral powder into a mixer, mixing with the mixture, and uniformly stirring to obtain the rut-resistant cement bridge deck asphalt paving material;
step five: asphalt pavement is carried out on the anti-rutting cement bridge deck asphalt pavement material on the bridge deck, and the anti-rutting cement bridge deck asphalt pavement is formed after solidification.
Example 4
The embodiment is a preparation method of an anti-rutting cement bridge deck asphalt paving material, which comprises the following steps:
step one: weighing 25 parts of matrix asphalt, 2.5 parts of anti-rutting agent, 5 parts of modified carbon fiber, 10 parts of cement, 6 parts of mineral powder and 65 parts of aggregate according to parts by weight for standby; the matrix asphalt is 90 # matrix asphalt; the anti-rut agent is MA103 anti-rut agent; the modified carbon fiber is the modified carbon fiber in example 2; the cement is silicate cement with the strength grade of 32.5R; the mineral powder is S95-grade fine limestone mineral powder; the aggregate is basalt, and the particle size of the basalt is 5mm;
step two: placing matrix asphalt in an oven, preheating for 40min at 170 ℃, placing aggregate in the oven, preheating for 40min at 180 ℃, then adding the aggregate into a mixer together, adding an anti-rutting agent, and uniformly stirring to obtain a mixture;
step three: adding matrix asphalt into a mixer, and mixing with the mixture uniformly to obtain a mixture;
step four: adding the modified carbon fiber, cement and mineral powder into a mixer, mixing with the mixture, and uniformly stirring to obtain the rut-resistant cement bridge deck asphalt paving material;
step five: asphalt pavement is carried out on the anti-rutting cement bridge deck asphalt pavement material on the bridge deck, and the anti-rutting cement bridge deck asphalt pavement is formed after solidification.
Comparative example 1
This comparative example differs from example 4 in that no modified carbon fiber was added and SBS was used instead of the anti-rutting agent; wherein, the SBS modifier is star-shaped SBS produced by Yueyang petrochemical industry, the block ratio (S/B) is 30/70, the tensile strength is 13MPa, and the elongation at break is 650%.
Comparative example 2
This comparative example differs from example 4 in that no modified carbon fiber was added and the anti-rutting agent was replaced with a mixture of SBS and crumb rubber in the same mass ratio; wherein the waste rubber powder is 60 mesh waste rubber powder of Tianjin Zhixin rubber products limited company, and the main chemical components are ash content 5.2%, acetone extract 8%, rubber hydrocarbon content 63% and carbon black content 35%.
Comparative example 3
This comparative example differs from example 4 in that no modified carbon fiber was added.
Comparative example 4
This comparative example differs from example 4 in that carbon fibers were added instead of modified carbon fibers.
Performance tests were carried out on the rut resistant cement bridge deck asphalt pavements of examples 3 to 4 and comparative examples 1 to 4, and rut penetration (total deformation) RD, dynamic stability DS and bending stiffness modulus were used as evaluation indexes for the rut resistant cement bridge deck asphalt pavements, and the test results are shown in the following table
The test is carried out according to the specification of T0719 in the test procedure of asphalt and asphalt mixture for highway engineering (JTG E20-2011), wherein the test conditions of deep rutting (total deformation) RD and dynamic stability DS are as follows: the test temperature is 60 ℃, and the wheel pressure is 0.7MPa; the bending stiffness modulus test conditions were: the test temperature was-10℃and the loading rate was 50 mm/min.
Referring to the above table data, according to the comparison between examples 3-4 and comparative examples 1-4, it can be known that the addition of anti-rutting agent, SBS, waste rubber powder, carbon fiber and modified carbon fiber improves the anti-rutting ability of asphalt pavement of anti-rutting cement bridge deck, and also can improve the flexural stiffness modulus, reduce the low temperature brittleness, improve the low temperature toughness, and avoid brittle failure.
In the description of the present specification, the descriptions of the terms "one embodiment," "example," "specific example," and the like, mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present invention. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiments or examples. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
The foregoing is merely illustrative and explanatory of the invention, as various modifications and additions may be made to the particular embodiments described, or in a similar manner, by those skilled in the art, without departing from the scope of the invention or exceeding the scope of the invention as defined by the application.
Claims (9)
1. An anti-rutting cement bridge deck asphalt pavement material is characterized by comprising the following components in parts by weight:
15-25 parts of matrix asphalt, 0.5-2.5 parts of anti-rutting agent, 1-5 parts of modified carbon fiber, 4-10 parts of cement, 2-6 parts of mineral powder and 55-65 parts of aggregate;
wherein, the modified carbon fiber is prepared by the following steps:
step S1: adding 2-methoxy hydroquinone, 4' -difluorobenzophenone, anhydrous potassium carbonate, sulfolane and toluene into a three-neck flask for stirring reaction, cooling a reaction product after the reaction is finished, pouring the reaction product into ice water, precipitating a precipitate, performing vacuum filtration, washing and drying a filter cake to obtain methoxy-containing polyether ether ketone;
step S2: adding methoxy polyether-ether-ketone and methylene dichloride into a three-neck flask for stirring reaction, then dropwise adding a boron tribromide solution while stirring, continuing stirring reaction after the dropwise adding, pouring a reaction product into absolute ethyl alcohol after the reaction is finished, then carrying out vacuum suction filtration, washing and drying a filter cake to obtain hydroxyl polyether-ether-ketone;
step S3: adding hydroxyl-containing polyether-ether-ketone, anhydrous potassium carbonate and methylene dichloride into a three-neck flask for stirring reaction, then adding chloropropyl triethoxysilane and perfluoro octanoyl chloride for continuous stirring reaction, cooling a reaction product after the reaction is finished, performing rotary evaporation, and then washing and drying to obtain modified polyether-ether-ketone;
step S4: adding modified polyether ether ketone, sodium dodecyl sulfate and N-methyl pyrrolidone into a three-neck flask for stirring reaction to obtain modified coating liquid;
step S5: adding carbon fiber and acetone into a three-neck flask for stirring reaction, cooling a reaction product after the reaction is finished, performing vacuum suction filtration, washing and drying a filter cake to obtain the carbon fiber with a clean surface;
step S6: adding the surface-cleaned carbon fiber and the modified coating liquid into a three-neck flask for ultrasonic treatment, stirring for reaction, cooling a reaction product after the reaction is finished, centrifuging, and drying a precipitate to obtain the modified carbon fiber.
2. The rut resistant cement bridge deck asphalt pavement material according to claim 1, wherein the dosage ratio of 2-methoxy hydroquinone, 4' -difluoro benzophenone, anhydrous potassium carbonate, sulfolane and toluene in step S1 is 10mmol:10mmol:13-15mmol:20-30mL:15-20mL.
3. The rut-resistant cement bridge deck asphalt pavement material according to claim 1, wherein the dosage ratio of the methoxy-containing polyether ether ketone, methylene dichloride and boron tribromide solution in the step S2 is 5g:30-45mL:45-50mL, wherein the boron tribromide solution is a solution with the mass fraction of 10-12% formed by dissolving boron tribromide in methylene dichloride.
4. The rut-resistant cement bridge deck asphalt pavement material according to claim 1, wherein the dosage ratio of the hydroxyl-containing polyether ether ketone, anhydrous potassium carbonate, methylene dichloride, chloropropyl triethoxysilane and perfluoro octanoyl chloride in the step S3 is 5g:1.5-2g:50-60mL:1-5g:1-5g.
5. The rut-resistant cement bridge deck asphalt pavement material according to claim 1, wherein the dosage ratio of the modified polyether ether ketone, sodium dodecyl sulfate and N-methyl pyrrolidone in the step S4 is 3-11g:0.3-0.7g:55-60mL.
6. The rut resistant cement bridge deck asphalt pavement material according to claim 1, wherein the dosage ratio of carbon fiber to acetone in the step S5 is 5g:50-60mL, wherein the carbon fiber is T300 type carbon fiber.
7. The rut-resistant cement bridge deck asphalt pavement material according to claim 1, wherein the dosage ratio of the surface cleaning carbon fiber to the modified coating liquid in the step S6 is 5g:150-200mL.
8. A method for preparing an anti-rutting cement bridge deck asphalt pavement material according to any one of claims 1 to 7, comprising the steps of:
step one: 15-25 parts of matrix asphalt, 0.5-2.5 parts of anti-rutting agent, 1-5 parts of modified carbon fiber, 4-10 parts of cement, 2-6 parts of mineral powder and 55-65 parts of aggregate are weighed according to parts by weight for standby;
step two: placing matrix asphalt in an oven, preheating for 30-40min at 160-170 ℃, placing aggregate in the oven, preheating for 30-40min at 170-180 ℃, then adding the mixture into a mixer, adding an anti-rut agent, and uniformly stirring to obtain a mixture;
step three: adding matrix asphalt into a mixer, and mixing with the mixture uniformly to obtain a mixture;
step four: adding the modified carbon fiber, cement and mineral powder into a mixer, mixing with the mixture, and uniformly stirring to obtain the rut-resistant cement bridge deck asphalt paving material.
9. The method for preparing an anti-rutting cement bridge deck asphalt paving material according to claim 8, wherein the matrix asphalt is 90 # matrix asphalt; the anti-rut agent is one of PR anti-rut agent and MA103 anti-rut agent; the cement is silicate cement with the strength grade of 32.5R; the mineral powder is S95-grade fine limestone mineral powder; the aggregate is basalt, and the particle size of the basalt is 5-15mm.
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