CN114622453B - Recyclable grouting composite ice and snow melting asphalt pavement and paving method thereof - Google Patents
Recyclable grouting composite ice and snow melting asphalt pavement and paving method thereof Download PDFInfo
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- CN114622453B CN114622453B CN202210326803.0A CN202210326803A CN114622453B CN 114622453 B CN114622453 B CN 114622453B CN 202210326803 A CN202210326803 A CN 202210326803A CN 114622453 B CN114622453 B CN 114622453B
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- grouting
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- 238000002844 melting Methods 0.000 title claims abstract description 135
- 239000002131 composite material Substances 0.000 title claims abstract description 111
- 230000008018 melting Effects 0.000 title claims abstract description 96
- 239000010426 asphalt Substances 0.000 title claims abstract description 75
- 238000000034 method Methods 0.000 title claims abstract description 26
- 239000000463 material Substances 0.000 claims abstract description 132
- 239000000945 filler Substances 0.000 claims abstract description 109
- 238000003860 storage Methods 0.000 claims abstract description 59
- 239000011384 asphalt concrete Substances 0.000 claims abstract description 54
- 230000000694 effects Effects 0.000 claims abstract description 15
- 229920006395 saturated elastomer Polymers 0.000 claims abstract description 14
- 239000011148 porous material Substances 0.000 claims abstract description 13
- 239000012266 salt solution Substances 0.000 claims abstract description 12
- 238000005096 rolling process Methods 0.000 claims abstract description 6
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 91
- 239000003795 chemical substances by application Substances 0.000 claims description 30
- 150000003839 salts Chemical class 0.000 claims description 27
- 238000003756 stirring Methods 0.000 claims description 23
- 238000010008 shearing Methods 0.000 claims description 22
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- 229920000642 polymer Polymers 0.000 claims description 17
- 239000011435 rock Substances 0.000 claims description 17
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 16
- 239000000839 emulsion Substances 0.000 claims description 16
- 229910017053 inorganic salt Inorganic materials 0.000 claims description 15
- 238000010438 heat treatment Methods 0.000 claims description 14
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- 238000000576 coating method Methods 0.000 claims description 12
- 238000001035 drying Methods 0.000 claims description 12
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 11
- 239000000843 powder Substances 0.000 claims description 11
- 229910052500 inorganic mineral Inorganic materials 0.000 claims description 9
- 239000011707 mineral Substances 0.000 claims description 9
- 239000011324 bead Substances 0.000 claims description 8
- 239000003638 chemical reducing agent Substances 0.000 claims description 8
- 238000002156 mixing Methods 0.000 claims description 8
- 239000004568 cement Substances 0.000 claims description 7
- 239000006184 cosolvent Substances 0.000 claims description 7
- 239000003085 diluting agent Substances 0.000 claims description 7
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- 238000009736 wetting Methods 0.000 claims description 7
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- 229910001653 ettringite Inorganic materials 0.000 claims description 6
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- 229920005610 lignin Polymers 0.000 claims description 6
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- 229910021487 silica fume Inorganic materials 0.000 claims description 6
- 229910021536 Zeolite Inorganic materials 0.000 claims description 5
- 239000013530 defoamer Substances 0.000 claims description 5
- HNPSIPDUKPIQMN-UHFFFAOYSA-N dioxosilane;oxo(oxoalumanyloxy)alumane Chemical compound O=[Si]=O.O=[Al]O[Al]=O HNPSIPDUKPIQMN-UHFFFAOYSA-N 0.000 claims description 5
- 239000010457 zeolite Substances 0.000 claims description 5
- 239000002202 Polyethylene glycol Substances 0.000 claims description 4
- 239000004793 Polystyrene Substances 0.000 claims description 4
- 239000004113 Sepiolite Substances 0.000 claims description 4
- 239000006087 Silane Coupling Agent Substances 0.000 claims description 4
- OZZOVSQSDIWNIP-UHFFFAOYSA-N acetic acid;azane Chemical compound [NH4+].[NH4+].CC([O-])=O.CC([O-])=O OZZOVSQSDIWNIP-UHFFFAOYSA-N 0.000 claims description 4
- 150000001412 amines Chemical class 0.000 claims description 4
- 239000011230 binding agent Substances 0.000 claims description 4
- 239000006229 carbon black Substances 0.000 claims description 4
- 238000007667 floating Methods 0.000 claims description 4
- 239000011521 glass Substances 0.000 claims description 4
- 229910021389 graphene Inorganic materials 0.000 claims description 4
- 239000003960 organic solvent Substances 0.000 claims description 4
- 239000010451 perlite Substances 0.000 claims description 4
- 235000019362 perlite Nutrition 0.000 claims description 4
- 229920001223 polyethylene glycol Polymers 0.000 claims description 4
- 229920002223 polystyrene Polymers 0.000 claims description 4
- 150000003242 quaternary ammonium salts Chemical class 0.000 claims description 4
- 239000012047 saturated solution Substances 0.000 claims description 4
- 235000019355 sepiolite Nutrition 0.000 claims description 4
- 229910052624 sepiolite Inorganic materials 0.000 claims description 4
- HVUMOYIDDBPOLL-XWVZOOPGSA-N Sorbitan monostearate Chemical compound CCCCCCCCCCCCCCCCCC(=O)OC[C@@H](O)[C@H]1OC[C@H](O)[C@H]1O HVUMOYIDDBPOLL-XWVZOOPGSA-N 0.000 claims description 3
- SHFGJEQAOUMGJM-UHFFFAOYSA-N dialuminum dipotassium disodium dioxosilane iron(3+) oxocalcium oxomagnesium oxygen(2-) Chemical compound [O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[Na+].[Na+].[Al+3].[Al+3].[K+].[K+].[Fe+3].[Fe+3].O=[Mg].O=[Ca].O=[Si]=O SHFGJEQAOUMGJM-UHFFFAOYSA-N 0.000 claims description 3
- 229920000223 polyglycerol Polymers 0.000 claims description 3
- 239000013589 supplement Substances 0.000 claims description 3
- 230000008961 swelling Effects 0.000 claims description 3
- DBMJMQXJHONAFJ-UHFFFAOYSA-M Sodium laurylsulphate Chemical compound [Na+].CCCCCCCCCCCCOS([O-])(=O)=O DBMJMQXJHONAFJ-UHFFFAOYSA-M 0.000 claims description 2
- 238000001179 sorption measurement Methods 0.000 claims description 2
- 239000010410 layer Substances 0.000 abstract description 20
- 239000002344 surface layer Substances 0.000 abstract description 17
- 239000002994 raw material Substances 0.000 description 43
- 239000000203 mixture Substances 0.000 description 36
- 238000012360 testing method Methods 0.000 description 29
- FAPWRFPIFSIZLT-UHFFFAOYSA-M Sodium chloride Chemical group [Na+].[Cl-] FAPWRFPIFSIZLT-UHFFFAOYSA-M 0.000 description 22
- -1 salt compound Chemical class 0.000 description 22
- 239000000243 solution Substances 0.000 description 17
- 229920003171 Poly (ethylene oxide) Polymers 0.000 description 14
- 239000011780 sodium chloride Substances 0.000 description 11
- 239000000047 product Substances 0.000 description 10
- 239000008149 soap solution Substances 0.000 description 10
- 230000008014 freezing Effects 0.000 description 7
- 238000007710 freezing Methods 0.000 description 7
- RTZKZFJDLAIYFH-UHFFFAOYSA-N Diethyl ether Chemical compound CCOCC RTZKZFJDLAIYFH-UHFFFAOYSA-N 0.000 description 6
- 229920001296 polysiloxane Polymers 0.000 description 6
- XDTMQSROBMDMFD-UHFFFAOYSA-N Cyclohexane Chemical compound C1CCCCC1 XDTMQSROBMDMFD-UHFFFAOYSA-N 0.000 description 5
- 150000001346 alkyl aryl ethers Chemical class 0.000 description 5
- 238000004140 cleaning Methods 0.000 description 5
- 239000003995 emulsifying agent Substances 0.000 description 5
- 239000012535 impurity Substances 0.000 description 5
- 229920003048 styrene butadiene rubber Polymers 0.000 description 4
- 229920001935 styrene-ethylene-butadiene-styrene Polymers 0.000 description 4
- 238000004078 waterproofing Methods 0.000 description 4
- UXVMQQNJUSDDNG-UHFFFAOYSA-L Calcium chloride Chemical compound [Cl-].[Cl-].[Ca+2] UXVMQQNJUSDDNG-UHFFFAOYSA-L 0.000 description 3
- 230000009471 action Effects 0.000 description 3
- 239000001110 calcium chloride Substances 0.000 description 3
- 229910001628 calcium chloride Inorganic materials 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 239000003822 epoxy resin Substances 0.000 description 3
- 239000004816 latex Substances 0.000 description 3
- 229920000126 latex Polymers 0.000 description 3
- 229920000647 polyepoxide Polymers 0.000 description 3
- 229920005596 polymer binder Polymers 0.000 description 3
- 239000002491 polymer binding agent Substances 0.000 description 3
- 229920005862 polyol Polymers 0.000 description 3
- 150000003077 polyols Chemical class 0.000 description 3
- 238000002360 preparation method Methods 0.000 description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 2
- 239000011083 cement mortar Substances 0.000 description 2
- 238000013329 compounding Methods 0.000 description 2
- 238000001514 detection method Methods 0.000 description 2
- 238000011161 development Methods 0.000 description 2
- 239000012153 distilled water Substances 0.000 description 2
- 239000003595 mist Substances 0.000 description 2
- 229920005646 polycarboxylate Polymers 0.000 description 2
- 229920001451 polypropylene glycol Polymers 0.000 description 2
- 238000001556 precipitation Methods 0.000 description 2
- 238000002791 soaking Methods 0.000 description 2
- DAJSVUQLFFJUSX-UHFFFAOYSA-M sodium;dodecane-1-sulfonate Chemical compound [Na+].CCCCCCCCCCCCS([O-])(=O)=O DAJSVUQLFFJUSX-UHFFFAOYSA-M 0.000 description 2
- 238000005507 spraying Methods 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 1
- 239000002518 antifoaming agent Substances 0.000 description 1
- 239000007864 aqueous solution Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 239000006071 cream Substances 0.000 description 1
- 125000004122 cyclic group Chemical group 0.000 description 1
- 230000003111 delayed effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 229940008099 dimethicone Drugs 0.000 description 1
- 239000004205 dimethyl polysiloxane Substances 0.000 description 1
- 235000013870 dimethyl polysiloxane Nutrition 0.000 description 1
- AMTWCFIAVKBGOD-UHFFFAOYSA-N dioxosilane;methoxy-dimethyl-trimethylsilyloxysilane Chemical group O=[Si]=O.CO[Si](C)(C)O[Si](C)(C)C AMTWCFIAVKBGOD-UHFFFAOYSA-N 0.000 description 1
- 238000011156 evaluation Methods 0.000 description 1
- 239000002657 fibrous material Substances 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 230000002401 inhibitory effect Effects 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 239000011159 matrix material Substances 0.000 description 1
- 230000003204 osmotic effect Effects 0.000 description 1
- 229920000435 poly(dimethylsiloxane) Polymers 0.000 description 1
- 238000007586 pull-out test Methods 0.000 description 1
- 238000005086 pumping Methods 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 230000035939 shock Effects 0.000 description 1
- 229940083037 simethicone Drugs 0.000 description 1
- 238000004088 simulation Methods 0.000 description 1
- 239000005413 snowmelt Substances 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- 238000003892 spreading Methods 0.000 description 1
- 230000007480 spreading Effects 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 239000002352 surface water Substances 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01C—CONSTRUCTION OF, OR SURFACES FOR, ROADS, SPORTS GROUNDS, OR THE LIKE; MACHINES OR AUXILIARY TOOLS FOR CONSTRUCTION OR REPAIR
- E01C7/00—Coherent pavings made in situ
- E01C7/08—Coherent pavings made in situ made of road-metal and binders
- E01C7/18—Coherent pavings made in situ made of road-metal and binders of road-metal and bituminous 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
- 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
- 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
- C04B38/00—Porous mortars, concrete, artificial stone or ceramic ware; Preparation thereof
- C04B38/0038—Porous mortars, concrete, artificial stone or ceramic ware; Preparation thereof by superficial sintering or bonding of particulate matter
- C04B38/0041—Porous mortars, concrete, artificial stone or ceramic ware; Preparation thereof by superficial sintering or bonding of particulate matter the particulate matter having preselected particle sizes
-
- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01C—CONSTRUCTION OF, OR SURFACES FOR, ROADS, SPORTS GROUNDS, OR THE LIKE; MACHINES OR AUXILIARY TOOLS FOR CONSTRUCTION OR REPAIR
- E01C11/00—Details of pavings
- E01C11/24—Methods or arrangements for preventing slipperiness or protecting against influences of the weather
- E01C11/245—Methods or arrangements for preventing slipperiness or protecting against influences of the weather for preventing ice formation or for loosening ice, e.g. special additives to the paving material, resilient coatings
-
- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01C—CONSTRUCTION OF, OR SURFACES FOR, ROADS, SPORTS GROUNDS, OR THE LIKE; MACHINES OR AUXILIARY TOOLS FOR CONSTRUCTION OR REPAIR
- E01C7/00—Coherent pavings made in situ
- E01C7/08—Coherent pavings made in situ made of road-metal and binders
- E01C7/18—Coherent pavings made in situ made of road-metal and binders of road-metal and bituminous binders
- E01C7/182—Aggregate or filler materials, except those according to E01C7/26
-
- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01C—CONSTRUCTION OF, OR SURFACES FOR, ROADS, SPORTS GROUNDS, OR THE LIKE; MACHINES OR AUXILIARY TOOLS FOR CONSTRUCTION OR REPAIR
- E01C7/00—Coherent pavings made in situ
- E01C7/08—Coherent pavings made in situ made of road-metal and binders
- E01C7/18—Coherent pavings made in situ made of road-metal and binders of road-metal and bituminous binders
- E01C7/26—Coherent pavings made in situ made of road-metal and binders of road-metal and bituminous binders mixed with other materials, e.g. cement, rubber, leather, fibre
-
- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01C—CONSTRUCTION OF, OR SURFACES FOR, ROADS, SPORTS GROUNDS, OR THE LIKE; MACHINES OR AUXILIARY TOOLS FOR CONSTRUCTION OR REPAIR
- E01C7/00—Coherent pavings made in situ
- E01C7/08—Coherent pavings made in situ made of road-metal and binders
- E01C7/18—Coherent pavings made in situ made of road-metal and binders of road-metal and bituminous binders
- E01C7/26—Coherent pavings made in situ made of road-metal and binders of road-metal and bituminous binders mixed with other materials, e.g. cement, rubber, leather, fibre
- E01C7/265—Coherent pavings made in situ made of road-metal and binders of road-metal and bituminous binders mixed with other materials, e.g. cement, rubber, leather, fibre with rubber or synthetic resin, e.g. with rubber aggregate, with synthetic resin binder
-
- 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
- C04B2111/00612—Uses not provided for elsewhere in C04B2111/00 as one or more layers of a layered structure
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2111/00—Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
- C04B2111/00474—Uses not provided for elsewhere in C04B2111/00
- C04B2111/0075—Uses not provided for elsewhere in C04B2111/00 for road construction
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2111/00—Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
- C04B2111/20—Resistance against chemical, physical or biological attack
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2111/00—Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
- C04B2111/70—Grouts, e.g. injection mixtures for cables for prestressed concrete
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Structural Engineering (AREA)
- Ceramic Engineering (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Inorganic Chemistry (AREA)
- Road Paving Structures (AREA)
Abstract
The invention discloses a recyclable grouting composite ice and snow melting asphalt pavement and a paving method thereof, wherein the asphalt pavement comprises an asphalt concrete framework material, a grouting material which is poured into the asphalt concrete framework material, and a composite salt-storage ice and snow melting filler which is poured into the asphalt concrete framework material and is positioned on the grouting material, wherein the end face of the composite salt-storage ice and snow melting filler is flush with the asphalt concrete framework material; when the pavement is paved, the asphalt concrete framework material is paved on the pavement base layer, then leveling and rolling are carried out, grouting materials are poured on the surface of the pavement base layer, pore channels are reserved, and composite salt-accumulating ice-snow melting filler is poured in the pore channels. After the composite salt-accumulating ice-snow melting filler on the surface layer is completely separated out, saturated salt solution can be sprayed on the road surface in advance, and the saturated salt solution enters the carrier structure for storage, so that the ice-snow melting effect can be continuously exerted in the following ice-snow weather.
Description
Technical Field
The invention belongs to the field of ice and snow melting asphalt pavement, and particularly relates to a recyclable grouting composite ice and snow melting asphalt pavement and a paving method thereof.
Background
The problem of high temperature rutting on road surfaces in summer is one of the most important problems affecting road use, especially at structures such as intersections. The grouting road surface technology (also called as semi-flexible road surface) is a novel rigid-flexible road surface structure, and the characteristics of flexible road surfaces and rigid road surfaces can be fully exerted. The current common grouting pavement technology is to mix the rigid material cement mortar or grouting cement mortar into the asphalt mixture matrix, so as to improve the rutting resistance of the asphalt mixture and improve the durability of the asphalt mixture. The pavement structure forms the material strength together with the aggregate and the cement paste by the embedding and extruding principle, and improves the load resistance of the pavement. Meanwhile, the high-temperature stability is greatly superior to that of the common asphalt concrete pavement, and the fatigue resistance and the skid resistance are also superior to those of the common asphalt concrete pavement. The pore channels in the framework also provide play for the compounding of other materials.
Snow ice problem of winter roads is also one of the most important factors affecting the driving safety of roads in winter. Traditional manual salt spraying and mechanical snow removal are time-consuming and labor-consuming, and can pollute the environment and damage roads. In order to solve the problem, the slow-release salt-storage snow-melting technology is increasingly valued by scientific researchers and traffic departments in all countries of the world. The principle is that the snow melting ice inhibiting material replaces part of filler or fine aggregate in asphalt concrete, or is added into emulsified asphalt to be coated on the surface of pavement in the form of a coating. The salt compound on the surface layer of the road surface is released during snowfall, the freezing point of ice and snow at the bonding part of the road surface is reduced, the ice and snow melt and enter the road surface in a solution form, and the salt compound on the deep layer of the road surface is released under the pumping action, osmotic pressure and capillary action of the vehicle load and rises to the road surface, so that the freezing point of the solution is reduced, and the ice of the road surface is delayed. However, the main problem of the development of the slow-release salt-storage snow-melting pavement is that the durability of the slow-release salt-storage filler is the problem, namely, in summer in high-temperature rain, the salt-storage filler on the pavement layer is easy to separate out under the action of running load, so that the filler is wasted on a large scale, and the ice and snow melting life of the slow-release salt-storage asphalt pavement is greatly reduced. Meanwhile, as the pore canal is left in the asphalt mixture after salt is analyzed, rainwater easily enters the asphalt mixture along the pore canal, and water damage of the mixture is accelerated. Research shows that the addition of the slow-release salt-accumulating filler can reduce the water stability by more than three times on average, and the water damage is more obvious along with the increase of the doping amount. These two points are also key factors for limiting the further development and application of the slow-release salt-storage filler.
Disclosure of Invention
The invention aims to: the first object of the invention is to provide a grouting composite ice and snow melting asphalt pavement, which combines grouting materials with composite salt-storage ice and snow melting fillers, so that the cyclic use of the composite salt-storage ice and snow melting fillers is realized while the load resistance of the pavement is improved, and the snow melting efficiency is improved;
a second object of the present invention is to provide a method for paving the above asphalt pavement.
The technical scheme is as follows: the invention relates to a recyclable grouting composite ice and snow melting asphalt pavement, which is characterized in that: the asphalt pavement comprises an asphalt concrete framework material, a grouting material which is poured into the asphalt concrete framework material, and a composite salt-storage ice-snow-melting filler which is poured into the asphalt concrete framework material and positioned on the grouting material, wherein the end face of the composite salt-storage ice-snow-melting filler is flush with the asphalt concrete framework material; wherein, the asphalt concrete framework material is 70-90 parts, the grouting material is 10-15 parts, and the composite salt-accumulating ice-snow-melting filler is 1-5 parts.
According to the asphalt pavement disclosed by the invention, the composite salt-storage ice-snow-melting filler is poured on the grouting material, the composite salt-storage ice-snow-melting filler is added into the grouting material and is added into the surface layer of the grouting pavement in a fluid form, the rapid precipitation of the ice-snow-melting salt is realized by virtue of the large-gap structure of the surface layer, and the ice-snow-melting efficiency is greatly increased; meanwhile, the slow-release salt-storage filler is prevented from being directly added into the pavement structural layer material, so that damage of the salt-storage filler to the pavement structure is reduced, and the pavement performance of the slow-release salt-storage pavement is improved; in addition, based on the composite salt-accumulating ice-snow melting filler, when the filler on the surface layer is completely separated out after the filler is fully acted, saturated salt solution can be sprayed on the road surface in advance, the salt solution can infiltrate downwards in pores in time by means of a road surface dryer, and the salt solution enters a carrier structure for storage, so that the ice-snow melting effect can be continuously exerted in the following ice-snow weather.
Further, the top end of the grouting material is 5-10mm away from the top end of the asphalt concrete framework material, and the composite salt-storage ice-snow melting filler is filled in the 5-10mm gap.
Further, the composite salt-accumulating ice-snow melting filler adopted by the invention comprises, by weight, 60-70 parts of emulsified asphalt, 20-30 parts of inorganic salt, 2-6 parts of a high molecular binder, 0.1-1 part of an active diluent, 25-40 parts of a carrier, 1-3 parts of a surface active treatment agent, 2-5 parts of a high molecular surface polymer coating material, 0.5-2 parts of a wetting cosolvent and 0.1-2 parts of a waterproofing agent.
Further, the carrier adopted by the invention at least comprises one of zeolite, volcanic rock, diatomite, fly ash, floating beads, glass beads, expanded perlite, active carbon, graphene microplates, white carbon black or sepiolite.
Further, the surface active treatment agent adopted by the invention at least comprises one of span-60 polyorganosiloxane, lignin amine, quaternary ammonium salt, sodium dodecyl sulfonate, ammonium diacetate or silane coupling agent.
Further, the polymer coating material used in the invention at least comprises one of polyvinyl alcohol, polyethylene glycol, polyglycerol or polystyrene.
Further, the composite salt-accumulating ice-snow-melting filler adopted by the invention is prepared by the following steps:
(1) Stirring inorganic salt and a carrier for 5-8 hours under the water bath heating condition of 60-70 ℃ to prepare carrier adsorption inorganic salt saturated emulsion;
(2) Drying the inorganic salt saturated solution, adding the inorganic salt saturated solution into an organic solvent doped with a surface active treating agent, a high molecular surface polymer coating material and a waterproof agent, stirring and centrifugally separating to obtain a salt storage filler material adsorbed by a carrier;
(3) Heating emulsified asphalt to 100-200 ℃, adding a high molecular binder to prepare modified asphalt emulsion, mixing and shearing the salt-storage filler material, the reactive diluent and the wetting cosolvent for 30-40min at the speed of 8000-10000r/min, and preparing the composite salt-storage ice-snow melting filler.
Further, the asphalt concrete framework material adopted by the invention comprises 5-10 parts by weight of SBS modified asphalt, 80-90 parts by weight of limestone aggregate and 3-8 parts by weight of limestone mineral powder.
Further, the grouting material adopted by the invention comprises, by weight, 35-65 parts of sulphoaluminate cement, 12-30 parts of silica fume, 15-25 parts of quartz sand, 0.05-0.5 part of nano ettringite early strength agent, 0.1-0.5 part of water reducer, 0.01-0.1 part of defoamer, 0.01-0.05 part of fiber, 0.5-2.5 parts of expanding agent and 19.66-50 parts of water.
The invention relates to a method for paving the recyclable grouting composite ice and snow melting asphalt pavement, which comprises the following steps: paving an asphalt concrete framework material on a pavement base layer, leveling and rolling, pouring grouting material on the surface of the pavement base layer when the pavement base layer is cooled to below 40 ℃, reserving a pore channel from the upper end of the surface of the grouting material to the upper end of the framework material, pouring composite salt-accumulating ice-snow-melting filler into the pore channel after the grouting material is hardened, and drying to obtain the grouting composite ice-snow-melting asphalt pavement; after the inorganic salt in the composite salt-accumulating ice-snow-melting filler is completely separated out, the saturated salt solution is directly sprayed on the pavement, so that the recyclable grouting composite ice-snow-melting asphalt pavement is realized.
The beneficial effects are that: compared with the prior art, the invention has the remarkable advantages that: according to the asphalt pavement, the composite salt-storage ice-snow-melting filler is poured on the surface of the grouting material, so that the composite salt-storage ice-snow-melting filler on the surface layer is easier to separate out under the condition of improving the load resistance of the pavement, and the ice-snow-melting efficiency is improved. And the composite salt-accumulating ice-snow-melting filler is prevented from being directly added into the pavement structural layer material, so that the damage of the composite salt-accumulating ice-snow-melting filler to the pavement structure is reduced, and the pavement performance of the slow-release salt-accumulating pavement is improved. Meanwhile, after the composite salt-accumulating ice-snow melting filler on the surface layer is completely separated out after the composite salt-accumulating ice-snow melting filler plays a role, saturated salt solution can be sprayed on the road surface in advance, the salt solution is timely infiltrated downwards in pores by means of a road surface dryer and enters a carrier structure for storage, the ice-snow melting effect is continuously exerted in the following ice-snow weather, namely, the structure of a grouting channel and a salt-accumulating carrier is utilized, the recyclable supplement of the salt-accumulating filler on the surface layer is realized, the ice-snow melting effect period of the road surface is greatly improved, and the ice-snow removing cost of the road surface is reduced. In addition, the road surface shock absorption effect is improved, and the running stability of the vehicle is improved.
Drawings
FIG. 1 is a schematic view of the structure of an asphalt pavement of the present invention;
FIG. 2 is a schematic diagram of the microstructure of the composite salt-accumulating ice-snow melting filler of the invention;
FIG. 3 is a graph showing the change of the conductivity of the solution after the pavement of the present invention is washed by running water.
Detailed Description
The technical scheme of the invention is further described in detail below with reference to the accompanying drawings and the examples. The raw materials used in the present invention are commercially available.
As shown in fig. 1, the asphalt pavement structure of the invention comprises an asphalt concrete framework material 1, a grouting material 2 poured into the asphalt concrete framework material 1, and a composite salt-storage ice and snow melting filler 3 poured into the asphalt concrete framework material 1 at the upper end of the grouting material 2. The composite salt-accumulating ice-snow melting filler structure is shown in the following figure 2, and is supported by a carrier 4, inorganic salt 5 is adsorbed in the carrier, and the outer surface of the carrier 4 is coated with a polymer coating material 6 on the surface of a polymer.
The pavement material comprises: 70-90 parts of asphalt concrete framework material, 10-15 parts of grouting material and 1-5 parts of composite salt-accumulating ice-snow melting filler. Preferably 86-88 parts of asphalt concrete framework material, 10-11 parts of grouting material and 2-3 parts of composite salt-accumulating ice-snow melting filler.
The asphalt concrete framework material comprises the following components in parts by weight: 5-10 parts of SBS modified asphalt, 80-90 parts of limestone aggregate with the diameter of 0.075-19 mm and 3-8 parts of limestone mineral powder. The preferred method can be as follows: 5-8 parts of SBS modified asphalt, 88.3-89 parts of limestone aggregate with the diameter of 0.075-19 mm and 5.8-7 parts of limestone mineral powder. The raw materials are directly mixed and compounded when the framework material is prepared.
The grouting material comprises the following components in parts by weight: 35-65 parts of sulphoaluminate cement, 12-30 parts of silica fume, 15-25 parts of quartz sand, 0.05-0.5 part of nano ettringite early strength agent, 0.1-0.5 part of water reducer, 0.01-0.1 part of defoamer, 0.01-0.05 part of fiber, 0.5-2.5 parts of swelling agent and 19.66-50 parts of water. The preferred method can be as follows: 45-60 parts of sulphoaluminate cement, 15-20 parts of silica fume, 18-22 parts of quartz sand, 0.15-0.3 part of nano ettringite early strength agent, 0.2-0.3 part of water reducer, 0.05-0.1 part of defoamer, 0.03-0.05 part of fiber, 1.8-2 parts of swelling agent and 19.66-40 parts of water. The grouting preparation method comprises the steps of directly mixing and compounding raw materials.
The water reducer can be a powder water-reducing type polycarboxylate water reducer; the defoamer can be simethicone; the fibrous material may be lignin fibers; the expanding agent may be a mixture of aluminum powder and iron powder.
The composite salt ice and snow melting filler comprises the following components in parts by weight: 60-70 parts of emulsified asphalt, 20-30 parts of inorganic salt, 2-6 parts of polymer binder, 0.1-1 part of reactive diluent, 25-40 parts of carrier, 1-3 parts of surface active treating agent, 2-5 parts of polymer coating material on the surface of the polymer, 0.5-2 parts of wetting cosolvent and 0.1-2 parts of waterproofing agent. The preferred method can be as follows: 63-68 parts of emulsified asphalt, 25-28 parts of inorganic salt, 2.5-4 parts of polymer binder, 0.5-0.8 part of reactive diluent, 30-35 parts of carrier, 1-3 parts of surface active treating agent, 3-4.5 parts of polymer coating material on the surface of the polymer, 0.5-2 parts of wetting cosolvent and 0.1-1.5 parts of waterproofing agent.
Wherein the inorganic salt is sodium chloride and/or calcium chloride; the polymer binder at least comprises one of SBR, SEBS or epoxy resin. The active diluent is polyoxyethylene organic solution with the concentration of 5 percent; the carrier can at least comprise one of zeolite, volcanic rock, diatomite, fly ash, floating beads, glass beads, expanded perlite, activated carbon, graphene microplates, white carbon black or sepiolite; the surface active treating agent at least comprises one of span-60 polyorganosiloxane, lignin amine, quaternary ammonium salt, sodium dodecyl sulfonate, ammonium diacetate or silane coupling agent; the polymer coating material on the surface of the polymer at least comprises one of polyvinyl alcohol, polyethylene glycol, polyglycerol or polystyrene; the wetting co-solvent may be a polyoxyethylene alkylaryl ether and/or a polyoxyethylene polyol ether; the water-proofing agent can be SHP-50 polysiloxane.
Example 1
The materials and contents included in the road surface of example 1 are shown in table 1 below.
Table 1 pavement raw materials and compositions of examples
| Sequence number | Raw materials | Content/part |
| 1 | Asphalt concrete framework material | 88 |
| 2 | Grouting material | 10 |
| 3 | Composite salt-storage ice-snow-melting filler | 2 |
The asphalt concrete skeleton material includes the raw materials and the components shown in table 2 below.
TABLE 2 raw materials and Components of asphalt concrete skeleton Material
| Sequence number | Raw materials | Content/part |
| 1 | SBS modified asphalt | 5 |
| 2 | Limestone aggregate with diameter of 0.075mm-19mm | 89 |
| 3 | Limestone mineral powder | 6 |
The composite salt-accumulating ice-snow melting filler comprises the following raw materials and components shown in table 3.
TABLE 3 raw materials and compositions of composite salt-accumulating ice-snow melting filler
The composite salt ice and snow melting filler of the embodiment is prepared by the following steps:
(1) Stirring sodium chloride and volcanic rock under the water bath heating condition of 60 ℃, wherein the rotation speed of a stirrer is 300r/min, and the stirring time is 5h, so as to prepare saturated emulsion of the volcanic rock for adsorbing sodium chloride; after the drying treatment, adding cyclohexane organic solution (excessive) doped with poly (organohydrogensiloxane), polyvinyl alcohol and SHP-50 polysiloxane, stirring in a stirrer with the rotating speed of 500r/min, centrifugally separating, and cleaning impurities to obtain a volcanic rock adsorbed salt storage filler finished product;
(2) Heating emulsified asphalt to 150 ℃, then adding SBR and SEBS latex into an emulsifier solution together, and stirring to obtain soap solution; adjusting the PH of the soap solution to 4, and shearing at a high speed of 6000r/min for 2min to obtain modified asphalt emulsion; and mixing and shearing the prepared volcanic rock adsorbed salt storage filler finished product, the polyoxyethylene organic solution and the polyoxyethylene alkylaryl ether, and shearing for 30min at a shearing speed of 8000r/min to prepare the composite salt storage ice and snow melting filler.
The grouting materials of this example include the following raw materials and contents as shown in table 4.
TABLE 4 grouting materials raw materials and Components
The pavement paving method of the embodiment comprises the following steps:
(1) Paving an asphalt concrete framework material with the thickness of 6cm on the base layer, and leveling and rolling; when the temperature of the mixture is cooled to below 40 ℃, grouting material is poured on the surface, and the pouring depth of the grouting material is slightly lower than the depth of an asphalt mixture framework, so that a 5mm gap channel is reserved on the surface layer;
(2) After the grouting material is hardened, the composite salt-accumulating ice-snow melting filler is poured into the gap channel on the surface layer of the pavement, and the recyclable grouting composite ice-snow melting asphalt pavement is obtained after drying for 2 hours.
Example 2
The materials and contents included in the road surface of example 2 are shown in table 5 below.
Table 5 pavement raw materials and compositions of examples
| Sequence number | Raw materials | Content/part |
| 1 | Asphalt concrete framework material | 86 |
| 2 | Grouting material | 11 |
| 3 | Composite salt-storage ice-snow-melting filler | 3 |
The asphalt concrete skeletal material includes the raw materials and components shown in table 6 below.
TABLE 6 raw materials and Components of asphalt concrete skeleton Material
| Sequence number | Raw materials | Content-Parts by weight |
| 1 | SBS modified asphalt | 5.9 |
| 2 | Limestone aggregate with diameter of 0.075mm-19mm | 88.3 |
| 3 | Limestone mineral powder | 5.8 |
The composite salt-accumulating ice-snow melting filler comprises the following raw materials and components shown in table 7.
TABLE 7 raw materials and compositions of composite salt-accumulating ice and snow melting filler
The salt-accumulating ice-snow melting filler of the embodiment is prepared by the following steps:
(1) Stirring sodium chloride and volcanic rock under the water bath heating condition of 65 ℃ at the rotating speed of 350r/min for 6 hours to prepare saturated emulsion of volcanic rock adsorbed sodium chloride; adding the mixture into cyclohexane organic solvent (excessive) doped with poly (organohydrogensiloxane), polyvinyl alcohol and SHP-50 polysiloxane after drying treatment, stirring in a stirrer with the rotating speed of 700r/min, centrifugally separating, and cleaning impurities to obtain a volcanic rock adsorbed salt storage filler finished product;
(2) Heating emulsified asphalt to 170 ℃, then adding SBR and SEBS latex into an emulsifier solution together, and stirring to obtain soap solution; adjusting the PH of the soap solution to 4.5, and shearing at a high speed of 7000r/min for 2min to obtain modified asphalt emulsion; and mixing and shearing the prepared volcanic rock adsorbed salt storage filler finished product, the polyoxyethylene organic solution and the polyoxyethylene alkylaryl ether, and shearing for 30min at the shearing speed of 9000r/min to prepare the composite salt storage ice and snow melting filler.
The grouting materials of this example include the following raw materials and contents as shown in table 8.
Table 8 raw materials and Components of grouting Material
The pavement paving method of the embodiment comprises the following steps:
(1) Paving an asphalt concrete framework material with the thickness of 8cm on a base layer, and leveling and rolling; when the temperature of the mixture is cooled to below 40 ℃, grouting material is poured on the surface, and the pouring depth of the grouting material is slightly lower than the depth of an asphalt mixture framework, so that 8mm of gap channels are reserved on the surface layer;
(2) After the grouting material is hardened, the composite salt-accumulating ice-snow melting filler is poured into the gap channel on the surface layer of the pavement, and the recyclable grouting composite ice-snow melting asphalt pavement is obtained after drying for 2 hours.
Example 3
The materials and contents included in the road surface of example 3 are shown in table 9 below.
Table 9 pavement raw materials and compositions of examples
| Sequence number | Raw materials | Content/part |
| 1 | Asphalt concrete framework material | 88 |
| 2 | Grouting material | 10 |
| 3 | Composite salt-storage ice-snow-melting filler | 2 |
The asphalt concrete skeletal material includes the raw materials and components shown in table 10 below.
TABLE 10 raw materials and Components of asphalt concrete skeleton Material
| Sequence number | Raw materials | Content/part |
| 1 | SBS modified asphalt | 8 |
| 2 | Limestone aggregate with diameter of 0.075mm-19mm | 85 |
| 3 | Limestone mineral powder | 7 |
The composite salt-accumulating ice-snow melting filler comprises the following raw materials and components shown in table 11.
Table 11 raw materials and compositions of composite salt-accumulating ice-snow melting filler
The salt-accumulating ice-snow melting filler of the embodiment is prepared by the following steps:
(1) Stirring sodium chloride and volcanic rock under the condition of heating in a water bath at 70 ℃, wherein the rotation speed of a stirrer is 400r/min, and the stirring time is 7h, so as to prepare saturated emulsion of the volcanic rock for adsorbing sodium chloride; adding the mixture into cyclohexane organic solvent (excessive) doped with poly (organohydrogensiloxane), polyvinyl alcohol and SHP-50 polysiloxane after drying treatment, stirring in a stirrer with the rotating speed of 750r/min, centrifugally separating, and cleaning impurities to obtain a volcanic rock adsorbed salt storage filler finished product;
(2) Heating emulsified asphalt to 170 ℃, then adding SBR and SEBS latex into an emulsifier solution together, and stirring to obtain soap solution; adjusting the PH of the soap solution to 5, and shearing at a high speed of 8000r/min for 2min to obtain modified asphalt emulsion; and mixing and shearing the prepared volcanic rock adsorbed salt storage filler finished product, the polyoxyethylene organic solution and the polyoxyethylene alkylaryl ether, and shearing for 40min at a shearing speed of 10000r/min to prepare the composite salt storage ice and snow melting filler.
The grouting materials of this example include the following materials and contents as shown in table 12.
Table 12 raw materials and Components of grouting Material
The pavement paving method of the embodiment comprises the following steps:
(1) Paving an asphalt concrete framework material with the thickness of 10cm on a base layer, and leveling and rolling; when the temperature of the mixture is cooled to below 40 ℃, grouting the grouting material on the surface, wherein the grouting depth is slightly lower than the depth of an asphalt mixture framework, so that a 10mm gap channel is reserved on the surface layer;
(2) After the grouting material is hardened, the composite salt-accumulating ice-snow melting filler is poured into the gap channel on the surface layer of the pavement, and the recyclable grouting composite ice-snow melting asphalt pavement is obtained after drying for 2 hours.
Performance detection
Low temperature rain and fog test
The low-temperature rain and fog ice test aims at evaluating the ice and snow melting effect of the composite salt ice and snow melting filler on the surface of the mixture in a lower-temperature and moist environment. The method is characterized in that a low-temperature environment test box is adopted, a certain temperature (-5 ℃ to 0 ℃) is set, the environment humidity (70%) and the surface water spraying of a test piece are regulated, so that two working conditions of fog and rain of an actual pavement under the low-temperature condition in winter are simulated, and the ice and snow melting effects of the surface of the recyclable grouting composite ice and snow melting asphalt pavement mixture and the common grouting anti-rutting asphalt concrete under different conditions are analyzed. Wherein the condition of mist is set to be at-5 ℃, the humidity is set to be 70%, the condition of rain is set to be at-5 ℃, and water is sprayed on the surface of the test piece.
(1) According to the preparation method in each embodiment, respectively preparing a recyclable grouting composite ice and snow melting asphalt mixture Marshall test piece and a common grouting anti-rutting asphalt concrete Marshall test piece (as a blank group);
(2) Placing the prepared test piece in a low-temperature environment test box, wherein the simulated working condition is rain, the temperature in the box is set to be-5 ℃, and the humidity is set to be 70%; the working condition is rain, the temperature in the box is set to be minus 5 ℃, and water is sprayed on the surface of a test piece;
(3) After 5 hours of freezing in the box, the Marshall test piece was taken out to observe the freezing condition of the surface of the test piece, and the obtained results are shown in Table 13 below.
Table 13 icing condition of test piece in low-temperature rain and fog simulation experiment
| Working conditions of | Control group | Example 1 | Example 2 | Example 3 |
| Mist spray | Surface one-layer white cream | The surface is substantially unchanged | The surface is substantially unchanged | The surface is substantially unchanged |
| Rain cover | Surface icing | Low surface icing | Unfrozen ice | Unfrozen ice |
As shown by the results, the recyclable grouting composite ice and snow melting asphalt pavement structure prepared by the invention can effectively reduce the freezing point of the pavement aqueous solution, and the freezing point range is more than or equal to-5 ℃. The grouting composite asphalt concrete test piece with the proper amount of the composite salt-accumulating ice-snow-melting filler is mixed on the surface, so that the grouting composite asphalt concrete test piece has a remarkable ice-melting effect compared with a grouting composite asphalt concrete test piece (blank group) without the composite salt-accumulating ice-snow-melting filler, and the grouting composite asphalt concrete test piece can achieve the effect of melting ice and snow in winter when being mixed in a grouting anti-rutting pavement structure.
(II) Ice interfacial pullout test
Under the condition of medium to large snow, the temperature is low, the ice and snow can not melt, snow or ice layer exists on the road surface of the ice and snow melting road surface, and the ice interface drawing test is just by measuring the binding force of the snow or ice layer and the road surface, and the effect of ice and snow melting of the composite salt ice and snow storage filler is judged. If the composite salt-storage ice-snow melting filler can reduce the binding force of snow or ice layers and the road surface, so that the ice and snow on the road surface are easier to remove, the ice and snow removing operation efficiency is improved, the highway can quickly recover traffic under the condition of medium and large snow, and the interference of snowfall on public travel is reduced. In order to evaluate the bonding performance of the ice interface and the road surface mixture, the ice interface drawing test can be adopted for evaluation, so that the ice and snow melting performance of the composite salt-storage ice and snow melting filler is indirectly reflected, and the specific method is as follows:
(1) Preparing three Marshall test pieces mixed with the composite salt-accumulating ice-snow-melting filler in the embodiment, and demolding for later use;
(2) Different test pieces are placed in drawing equipment, fixed and inspected, watering is carried out in the drawing equipment so that the bottom of the drawing equipment is covered by water surface, the bottom of the test piece is fully ensured to be contacted with the water surface of the drawing equipment, the test pieces are placed in a refrigerator at the temperature of minus 10 ℃ for 24 hours, the test pieces are taken out for quick drawing test, and the obtained results are shown in the following table 14.
TABLE 14 Ice interfacial pull strength
| Performance of | Control group | Example 1 | Example 2 | Example 3 |
| Drawing strength (MPa) | 0.37 | 0.27 | 0.25 | 0.24 |
It is apparent from table 14 that, after the composite salt-storing and ice-snow-melting filler is mixed, the composite salt-storing and ice-snow-melting filler enters the interface between the ice layer and the mixture, so that the freezing point can be effectively lowered, and the surface adhesion between the ice layer and the mixture is weakened. And the bonding strength of the interface between the ice layer and the mixture can be reduced by about 50% by doping the composite salt-storing ice-snow melting filler. Under the condition of long-term low temperature and large snow in winter, snow accumulated on the pavement and ice layers on the surface of the ice-snow melting asphalt pavement are easier to remove, which is equivalent to the effect of passively spreading the snow-melting agent, the efficiency of manually removing ice and snow on the expressway in winter is improved, and the smoothness and safety of the expressway are ensured.
(III) conductivity Performance detection
The test piece with the grouting composite ice and snow melting pavement structure prepared in the above way is taken and soaked in distilled water, and the DDS-307 conductivity tester is selected to conduct conductivity test on the test piece soaking liquid every other day, and the obtained result is shown in figure 3. From this figure, it was found that the salt still precipitated in the thirty-th soaking, and the initial precipitation amount was large. Has obvious effect of quickly melting road surface snow.
Example 4
The materials and contents included in the road surface of example 4 are shown in table 15 below.
Table 15 pavement materials and compositions of examples
| Sequence number | Raw materials | Content/part |
| 1 | Asphalt concrete framework material | 70 |
| 2 | Grouting material | 15 |
| 3 | Composite salt-storage ice-snow-melting filler | 5 |
The asphalt concrete skeletal material included raw materials and components are shown in table 16 below.
Table 16 raw materials and components of asphalt concrete skeleton material
| Sequence number | Raw materials | Content/part |
| 1 | SBS modified asphalt | 10 |
| 2 | Limestone aggregate with diameter of 0.075mm-19mm | 80 |
| 3 | Limestone mineral powder | 8 |
The composite salt-accumulating ice-snow melting filler comprises the following raw materials and components shown in table 17.
Table 17 raw materials and compositions of composite salt-accumulating ice-snow melting filler
The composite salt ice and snow melting filler of the embodiment is prepared by the following steps:
(1) Stirring the mixed salt of sodium chloride and calcium chloride and zeolite under the water bath heating condition of 65 ℃, wherein the rotating speed of a stirrer is 300r/min, and the stirring time is 8 hours, so as to prepare saturated emulsion of the zeolite for adsorbing the sodium chloride and the calcium chloride; adding cyclohexane organic solution (excessive) doped with sodium dodecyl sulfate, polyethylene glycol and SHP-50 polysiloxane after drying treatment, stirring in a stirrer with the rotating speed of 500r/min, centrifugally separating, and cleaning impurities to obtain a volcanic rock adsorbed salt storage filler finished product;
(2) Heating emulsified asphalt to 100 ℃, then adding epoxy resin emulsion into the emulsifier solution, and stirring to obtain soap solution; adjusting the PH of the soap solution to 4, and shearing at a high speed of 6000r/min for 2min to obtain modified asphalt emulsion; and mixing and shearing the prepared zeolite-adsorbed salt-accumulating filler finished product, the polyoxyethylene organic solution and the polyoxyethylene polyol ether, and shearing for 30min at the shearing speed of 9000r/min to prepare the composite salt-accumulating ice-snow melting filler.
The grouting materials of this example include the following materials and contents shown in table 18.
Table 18 grouting materials and compositions
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The pavement paving method of this example is the same as that of example 1.
Example 5
The materials and contents included in the road surface of example 5 are shown in table 19 below.
Table 19 pavement materials and compositions of examples
| Sequence number | Raw materials | Content/part |
| 1 | Asphalt concrete framework material | 90 |
| 2 | Grouting material | 10 |
| 3 | Composite salt-storage ice-snow-melting filler | 1 |
The asphalt concrete skeletal material includes the raw materials and components shown in table 20 below.
Table 20 raw materials and components of asphalt concrete skeleton material
| Sequence number | Raw materials | Content/part |
| 1 | SBS modified asphalt | 7 |
| 2 | Limestone aggregate with diameter of 0.075mm-19mm | 90 |
| 3 | Limestone mineral powder | 3 |
The raw materials and components of the composite salt ice and snow melting filler are shown in the following table 21.
Table 21 raw materials and compositions of composite salt-accumulating ice-snow melting filler
The composite salt ice and snow melting filler of the embodiment is prepared by the following steps:
(1) Stirring sodium chloride, diatomite and fly ash under the water bath heating condition of 65 ℃, wherein the rotating speed of a stirrer is 300r/min, and the stirring time is 8 hours, so that saturated emulsion of the diatomite and the fly ash for adsorbing the sodium chloride is prepared; after the drying treatment, adding cyclohexane organic solution (excessive) doped with ammonium diacetate, polypropylene glycol and SHP-50 polysiloxane, stirring in a stirrer with the rotating speed of 500r/min, centrifugally separating, and cleaning impurities to obtain a volcanic rock adsorbed salt storage filler finished product;
(2) Heating emulsified asphalt to 200 ℃, then adding epoxy resin emulsion into the emulsifier solution, and stirring to obtain soap solution; adjusting the PH of the soap solution to 4, and shearing at a high speed of 6000r/min for 2min to obtain modified asphalt emulsion; and mixing and shearing the prepared diatomite and fly ash adsorbed salt storage filler finished product, polyoxyethylene organic solution, polyoxyethylene alkylaryl ether and polyoxyethylene polyol ether, and shearing for 30min at a shearing speed of 9000r/min to obtain the composite salt storage ice and snow melting filler.
The grouting materials of this example include the following materials and contents as shown in table 22.
Table 22 raw materials and compositions of grouting materials
| Sequence number | Raw materials | Specific substances | Content/part |
| 1 | Sulphoaluminate cement | Sulphoaluminate cement | 65 |
| 2 | Silica fume | Silica fume | 30 |
| 3 | Quartz sand | Quartz sand | 25 |
| 4 | Nano ettringite early strength agent | Nano ettringite early strength agent | 0.5 |
| 5 | Water reducing agent | Powder water-reducing polycarboxylate water reducer | 0.5 |
| 6 | Defoaming agent | Dimethicone | 0.1 |
| 7 | Fiber | Lignin fiber | 0.05 |
| 8 | Expanding agent | Aluminum powder and iron powder mixture | 2.5 |
| 9 | Water and its preparation method | Distilled water | 50 |
The pavement paving method of this example is the same as that of example 1.
The performance of the marshall test pieces of the recyclable grouting compound ice and snow asphalt mixture prepared in examples 4 and 5 was respectively tested, and the results were not much different from those of examples 1 to 3. Therefore, the asphalt pavement disclosed by the invention has the advantages that the composite salt-storage ice-snow-melting filler is poured on the surface of the grouting material, so that the composite salt-storage ice-snow-melting filler on the surface layer is easier to separate out under the condition of improving the load resistance of the pavement, and the ice-snow-melting efficiency is improved. And after the composite salt-accumulating ice-snow melting filler on the surface layer is completely separated out after the composite salt-accumulating ice-snow melting filler plays a role, saturated salt solution can be sprayed on the road surface in advance, the salt solution can infiltrate downwards in pores in time by means of a road surface dryer and enter a carrier structure for storage, the ice-snow melting effect is continuously exerted in the following ice and snow weather, namely, the structure of a grouting channel and a salt-accumulating carrier is utilized, the recyclable supplement of the salt-accumulating filler on the surface layer is realized, the ice-snow melting effect period of the road surface is greatly improved, and the ice-snow removing cost of the road surface is reduced.
In addition to the above embodiments, the carrier in the composite salt-storage ice and snow melting filler used in the recyclable grouting composite ice and snow melting asphalt pavement of the invention can at least comprise one of floating beads, glass beads, expanded perlite, activated carbon, graphene microplates, white carbon black or sepiolite. The surface-active treatment agent may also include at least one of lignin amines, quaternary ammonium salts, or silane coupling agents. The polymer coating material on the surface of the polymer can at least also comprise polypropylene glycol and/or polystyrene.
Claims (8)
1. The method for paving the recyclable grouting composite ice and snow melting asphalt pavement is characterized in that the asphalt pavement related to the paving method comprises an asphalt concrete framework material, grouting materials which are poured into the asphalt concrete framework material, and composite salt-storage ice and snow melting fillers which are poured into the asphalt concrete framework material and are positioned on the grouting materials, wherein the end surfaces of the composite salt-storage ice and snow melting fillers are flush with the asphalt concrete framework material; wherein, 70-90 parts of asphalt concrete framework material, 10-15 parts of grouting material and 1-5 parts of composite salt-accumulating ice-snow melting filler; the composite salt-accumulating ice-snow melting filler comprises, by weight, 60-70 parts of emulsified asphalt, 20-30 parts of inorganic salt, 2-6 parts of a high molecular binder, 0.1-1 part of an active diluent, 25-40 parts of a carrier, 1-3 parts of a surface active treating agent, 2-5 parts of a high molecular surface polymer coating material, 0.5-2 parts of a wetting cosolvent and 0.1-2 parts of a waterproof agent;
the laying method comprises the following steps: paving an asphalt concrete framework material on a pavement base layer, leveling and rolling, pouring grouting material on the surface of the pavement base layer when the pavement base layer is cooled to below 40 ℃, reserving a pore channel from the upper end of the surface of the grouting material to the upper end of the framework material, pouring composite salt-accumulating ice-snow-melting filler into the pore channel after the grouting material is hardened, and drying to obtain the grouting composite ice-snow-melting asphalt pavement; after the composite salt-accumulating ice-snow-melting filler is completely separated out, the saturated salt solution is directly sprayed on the pavement, the salt solution is timely infiltrated downwards in the pores by means of a pavement dryer and enters the carrier structure for storage, the ice-snow-melting effect is continuously exerted in the follow-up ice and snow weather, the recyclable supplement of the surface salt-accumulating filler is realized, and the recyclable grouting composite ice-snow-melting asphalt pavement is realized.
2. The method of paving a recyclable grouting composite ice and snow melting asphalt pavement according to claim 1, wherein: the top end of the grouting material is 5-10mm away from the top end of the asphalt concrete framework material, and the composite salt-accumulating ice-snow melting filler is filled in the 5-10mm gap.
3. The method of paving a recyclable grouting composite ice and snow melting asphalt pavement according to claim 1, wherein: the carrier at least comprises one of zeolite, volcanic rock, diatomite, fly ash, floating beads, glass beads, expanded perlite, activated carbon, graphene microplates, white carbon black or sepiolite.
4. The method of paving a recyclable grouting composite ice and snow melting asphalt pavement according to claim 1, wherein: the surface active treating agent at least comprises one of span-60 polyorganosiloxane, lignin amine, quaternary ammonium salt, sodium dodecyl sulfate, ammonium diacetate or silane coupling agent.
5. The method of paving a recyclable grouting composite ice and snow melting asphalt pavement according to claim 1, wherein: the polymer coating material on the surface of the polymer at least comprises one of polyvinyl alcohol, polyethylene glycol, polyglycerol or polystyrene.
6. The method of paving a recyclable grouting composite ice and snow melting asphalt pavement according to claim 1, wherein: the composite salt-storage ice-snow melting filler is prepared by the following steps:
(1) Stirring inorganic salt and a carrier for 5-8 hours under the water bath heating condition of 60-70 ℃ to prepare carrier adsorption inorganic salt saturated emulsion;
(2) Drying the inorganic salt saturated solution, adding the inorganic salt saturated solution into an organic solvent doped with a surface active treating agent, a high molecular surface polymer coating material and a waterproof agent, stirring and centrifugally separating to obtain a salt storage filler material adsorbed by a carrier;
(3) Heating emulsified asphalt to 100-200 ℃, adding a high molecular binder to prepare modified asphalt emulsion, mixing and shearing the salt-storage filler material, the reactive diluent and the wetting cosolvent for 30-40min at the speed of 8000-10000r/min, and preparing the composite salt-storage ice-snow melting filler.
7. The method of paving a recyclable grouting composite ice and snow melting asphalt pavement according to claim 1, wherein: the asphalt concrete framework material comprises, by weight, 5-10 parts of SBS modified asphalt, 80-90 parts of limestone aggregate and 3-8 parts of limestone mineral powder.
8. The method of paving a recyclable grouting composite ice and snow melting asphalt pavement according to claim 1, wherein: the grouting material comprises, by weight, 35-65 parts of sulphoaluminate cement, 12-30 parts of silica fume, 15-25 parts of quartz sand, 0.05-0.5 part of nano ettringite early strength agent, 0.1-0.5 part of water reducer, 0.01-0.1 part of defoamer, 0.01-0.05 part of fiber, 0.5-2.5 parts of swelling agent and 19.66-50 parts of water.
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| JP2005048360A (en) * | 2003-07-29 | 2005-02-24 | Fukui Prefecture | Injection method for snow melting agent to paving material and the paving material injecting the snow melting agent therein |
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| CN106149561A (en) * | 2016-06-24 | 2016-11-23 | 谷建义 | The bridge deck pavement structure of complex three-dimensional porous material and construction method thereof |
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| CN114149788A (en) * | 2021-12-29 | 2022-03-08 | 南京兴佑交通科技有限公司 | Slow-release ice and snow melting agent, preparation method thereof and thin-layer cover material containing slow-release ice and snow melting agent |
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Patent Citations (5)
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| JP2005048360A (en) * | 2003-07-29 | 2005-02-24 | Fukui Prefecture | Injection method for snow melting agent to paving material and the paving material injecting the snow melting agent therein |
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| CN106149561A (en) * | 2016-06-24 | 2016-11-23 | 谷建义 | The bridge deck pavement structure of complex three-dimensional porous material and construction method thereof |
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