CN108729332B - Novel nanometer ultrathin maintenance and fresh-keeping spray layer and construction process thereof - Google Patents
Novel nanometer ultrathin maintenance and fresh-keeping spray layer and construction process thereof Download PDFInfo
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- CN108729332B CN108729332B CN201810480932.9A CN201810480932A CN108729332B CN 108729332 B CN108729332 B CN 108729332B CN 201810480932 A CN201810480932 A CN 201810480932A CN 108729332 B CN108729332 B CN 108729332B
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- 238000012423 maintenance Methods 0.000 title claims abstract description 37
- 239000007921 spray Substances 0.000 title claims abstract description 21
- 238000000034 method Methods 0.000 title claims abstract description 14
- 238000010276 construction Methods 0.000 title claims abstract description 12
- 230000008569 process Effects 0.000 title claims abstract description 12
- 239000010426 asphalt Substances 0.000 claims abstract description 47
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 25
- 238000004140 cleaning Methods 0.000 claims abstract description 23
- 229910010293 ceramic material Inorganic materials 0.000 claims abstract description 20
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 20
- 239000003638 chemical reducing agent Substances 0.000 claims abstract description 11
- 239000004568 cement Substances 0.000 claims abstract description 10
- 230000000149 penetrating effect Effects 0.000 claims abstract description 10
- 238000005507 spraying Methods 0.000 claims description 51
- 239000002994 raw material Substances 0.000 claims description 10
- 238000007605 air drying Methods 0.000 claims description 9
- 230000007480 spreading Effects 0.000 claims description 9
- 238000003892 spreading Methods 0.000 claims description 9
- 239000000463 material Substances 0.000 claims description 6
- 238000003756 stirring Methods 0.000 claims description 6
- 239000002390 adhesive tape Substances 0.000 claims description 3
- 238000007664 blowing Methods 0.000 claims description 3
- 238000001035 drying Methods 0.000 claims description 3
- 238000011049 filling Methods 0.000 claims description 3
- 239000003973 paint Substances 0.000 claims description 3
- 230000001699 photocatalysis Effects 0.000 claims description 3
- 238000002360 preparation method Methods 0.000 claims description 3
- 239000010408 film Substances 0.000 abstract description 17
- 230000003449 preventive effect Effects 0.000 abstract description 6
- 230000008439 repair process Effects 0.000 abstract description 4
- 239000010409 thin film Substances 0.000 abstract description 2
- 239000010410 layer Substances 0.000 description 135
- 239000011241 protective layer Substances 0.000 description 8
- 230000000694 effects Effects 0.000 description 6
- 238000005336 cracking Methods 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 3
- 238000012986 modification Methods 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- 230000032683 aging Effects 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 230000035699 permeability Effects 0.000 description 2
- 238000007146 photocatalysis Methods 0.000 description 2
- 238000007789 sealing Methods 0.000 description 2
- 229910010413 TiO 2 Inorganic materials 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 210000000988 bone and bone Anatomy 0.000 description 1
- 238000005282 brightening Methods 0.000 description 1
- 239000003054 catalyst Substances 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 238000000354 decomposition reaction Methods 0.000 description 1
- 201000010099 disease Diseases 0.000 description 1
- 208000037265 diseases, disorders, signs and symptoms Diseases 0.000 description 1
- 239000003344 environmental pollutant Substances 0.000 description 1
- 239000003574 free electron Substances 0.000 description 1
- 244000005700 microbiome Species 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 230000007935 neutral effect Effects 0.000 description 1
- 235000015097 nutrients Nutrition 0.000 description 1
- 239000011941 photocatalyst Substances 0.000 description 1
- 231100000719 pollutant Toxicity 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 239000004576 sand Substances 0.000 description 1
- 230000006641 stabilisation Effects 0.000 description 1
- 238000011105 stabilization Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- JUWGUJSXVOBPHP-UHFFFAOYSA-B titanium(4+);tetraphosphate Chemical compound [Ti+4].[Ti+4].[Ti+4].[O-]P([O-])([O-])=O.[O-]P([O-])([O-])=O.[O-]P([O-])([O-])=O.[O-]P([O-])([O-])=O JUWGUJSXVOBPHP-UHFFFAOYSA-B 0.000 description 1
Classifications
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- 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
- E01C23/00—Auxiliary devices or arrangements for constructing, repairing, reconditioning, or taking-up road or like surfaces
- E01C23/06—Devices or arrangements for working the finished surface; Devices for repairing or reconditioning the surface of damaged paving; Recycling in place or on the road
- E01C23/09—Devices or arrangements for working the finished surface; Devices for repairing or reconditioning the surface of damaged paving; Recycling in place or on the road for forming cuts, grooves, or recesses, e.g. for making joints or channels for markings, for cutting-out sections to be removed; for cleaning, treating, or filling cuts, grooves, recesses, or fissures; for trimming paving edges
- E01C23/0966—Devices or arrangements for working the finished surface; Devices for repairing or reconditioning the surface of damaged paving; Recycling in place or on the road for forming cuts, grooves, or recesses, e.g. for making joints or channels for markings, for cutting-out sections to be removed; for cleaning, treating, or filling cuts, grooves, recesses, or fissures; for trimming paving edges for filling or priming, with or without working the surface of the filling or applying particulate material thereto, e.g. for filling the joints of stone-sett paving
- E01C23/0973—Devices or arrangements for working the finished surface; Devices for repairing or reconditioning the surface of damaged paving; Recycling in place or on the road for forming cuts, grooves, or recesses, e.g. for making joints or channels for markings, for cutting-out sections to be removed; for cleaning, treating, or filling cuts, grooves, recesses, or fissures; for trimming paving edges for filling or priming, with or without working the surface of the filling or applying particulate material thereto, e.g. for filling the joints of stone-sett paving with liquid or semi-liquid materials, e.g. crack sealants
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D195/00—Coating compositions based on bituminous materials, e.g. asphalt, tar, pitch
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D7/00—Features of coating compositions, not provided for in group C09D5/00; Processes for incorporating ingredients in coating compositions
- C09D7/40—Additives
- C09D7/60—Additives non-macromolecular
- C09D7/61—Additives non-macromolecular inorganic
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A30/00—Adapting or protecting infrastructure or their operation
- Y02A30/60—Planning or developing urban green infrastructure
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Materials Engineering (AREA)
- Wood Science & Technology (AREA)
- Organic Chemistry (AREA)
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Abstract
The invention relates to the technical field of asphalt pavement preventive maintenance, in particular to a novel nanometer ultrathin maintenance fresh-keeping spray layer and a construction process thereof, wherein a maintenance fresh-keeping film layer is formed on the surface of an asphalt pavement and mainly comprises a bottom layer maintenance layer, a middle layer fresh-keeping layer and an upper layer fresh-keeping layer which are sequentially arranged from the bottom surface to the top, wherein the bottom layer maintenance layer is a nanometer self-cleaning micro-repair layer, and the middle layer and the upper layer fresh-keeping layer are double-layer protection layers; the bottom layer curing layer mainly comprises the following components: penetrating agent, reducing agent, nano ceramic material, SBS modified emulsified asphalt and water; the middle and upper fresh-keeping layers mainly comprise the following components: curing agent, nano ceramic material, cement, SBS modified emulsified asphalt and water; the spray layer structure adopts a three-layer structure to form an extremely thin film layer structure, the bottom layer curing layer not only can repair tiny cracks of the pavement, but also can form an anti-slip nanometer self-cleaning micro-repairing film layer on the pavement, and the middle layer and the upper layer of the novel protecting layer are additionally provided with double protection on the bottom layer curing layer, so that the durability and the repairing performance of the film layer are further consolidated.
Description
Technical Field
The invention relates to the technical field of asphalt pavement preventive maintenance, in particular to a novel nanometer ultrathin maintenance and new-keeping spray layer and a construction process thereof.
Background
Early experience shows that after a few years of construction and use under normal running conditions, even if the pavement is not severely hit, the pavement still starts to generate slight fatigue cracking and loss of fine aggregate, the water permeability of the pavement is also improved along with the cracking of the pavement, and accumulated water on the pavement can enter into asphalt mixture through cracks or fine aggregate damage/exposed bones, so that the damage of the pavement is further accelerated, the pavement can normally run in a basically normal period in the early period of damage, but if the optimal repair period is missed, more serious pavement damage such as network cracking, pits and the like can be caused.
In order to solve the problems, effective methods which can be implemented include micro-surfacing, thin cover surfaces and the like, and the most suitable method is a fog seal technology, so that the cost is low; the fog seal is suitable for curing diseases such as water seepage, lean oil, micro cracks and the like on the surface and serious aging of the expressway asphalt pavement, is a novel expressway asphalt pavement preventive curing technology, and utilizes special equipment to uniformly spread oil-type fog seal materials with good permeability on the asphalt pavement, so that the effects of preventing water and loosening are achieved, the aging of the pavement is prevented, the running safety is guaranteed, water damage is avoided, the pavement structure is protected, and the service life of the pavement is prolonged.
Therefore, the fog seal technology is the most effective measure of preventive maintenance of asphalt pavement with higher neutral price and early preventive maintenance, and is widely applied, but in application practice, the fog seal is a common fog seal, a reducing agent fog seal or a sand-containing fog seal, which has two great defects, on one hand, the adopted materials have poor adhesive property, so that the materials are easy to fall off after being paved on asphalt pavement; on the other hand, the construction depth of the original road surface is reduced, namely the friction force is reduced, and a great potential safety hazard exists.
Disclosure of Invention
In order to solve the problems, the invention aims to disclose the technical field of asphalt pavement preventive maintenance, in particular to a novel nanometer ultrathin maintenance and new-keeping spray layer and a construction process thereof.
In order to achieve the above purpose, the invention adopts the following technical scheme: the novel nanometer ultrathin maintenance and fresh-keeping spray layer structure is characterized in that the spray layer structure is arranged on the surface of an asphalt pavement to form a maintenance and fresh-keeping film layer and mainly comprises a bottom maintenance layer, a middle maintenance layer and an upper maintenance layer which are sequentially arranged from the bottom surface to the top, wherein the bottom maintenance layer is a nanometer self-cleaning micro-repair layer, and the middle maintenance layer and the upper maintenance layer are double protection layers covering the surface of the bottom maintenance layer;
The bottom layer curing layer mainly comprises the following components: 0.5 to 1.5 parts of penetrating agent, 0.15 to 2.5 parts of reducing agent, 10 to 15 parts of nano ceramic material, 52 to 65 parts of SBS modified emulsified asphalt and 17 to 37 parts of water;
The middle layer and the upper layer of the new layer mainly comprise the following components: 5 to 10 parts of curing agent, 20 to 25 parts of nano ceramic material, 0.2 to 3 parts of cement, 55 to 71 parts of SBS modified emulsified asphalt and 3 to 7 parts of water.
The thickness of the bottom layer protection layer is 0.1-0.3 mm, the thickness of the middle layer protection layer is 0.2-0.4 mm, and the thickness of the upper layer protection layer is 0.3-0.5 mm.
The spreading amount of the bottom layer of the protective layer is 0.1-0.2 kg/m, the spreading amount of the middle layer of the protective layer is 0.2-0.3 kg/m, and the spreading amount of the upper layer of the protective layer is 0.3-0.4 kg/m.
The nanometer self-cleaning micro-repairing layer is a photocatalysis active nanometer paint layer.
The double-layer protective layers are all nano-curing microstructure layers.
The novel construction process of the nanometer ultrathin curing and fresh-keeping spray layer structure is characterized by mainly comprising the following steps of:
In a first step, materials are prepared to prepare a spray layer structure, the raw materials ① comprising: 1.2 parts of penetrating agent, 0.95 part of reducing agent, 13.4 parts of nano ceramic material, 59.5 parts of SBS modified emulsified asphalt and 27 parts of water; raw materials ② include: 7.5 parts of curing agent, 22.5 parts of nano ceramic material, 2.8 parts of cement, 63 parts of SBS modified emulsified asphalt and 5.6 parts of water; the preparation tool is a 100L wide-mouth barrel and a stirrer, the raw materials can be mixed in the 100L wide-mouth barrel and stirred uniformly by the stirrer;
Secondly, preparing a bottom layer protection layer: sequentially and respectively adding the penetrating agent, the reducing agent, the nano ceramic material and the water in parts by weight into the SBS modified emulsified asphalt in parts by weight, sequentially and respectively stirring uniformly and storing in a container;
Thirdly, respectively preparing a middle layer protection layer and an upper layer protection layer: sequentially and respectively adding the curing agent, the nano ceramic material, the cement and the water in parts by weight into the SBS modified emulsified asphalt in parts by weight, sequentially and respectively stirring uniformly and storing in a container;
Fourth, cleaning the asphalt pavement, blowing out the asphalt pavement by adopting a high-pressure fan, performing crack filling treatment on larger cracks of the pavement, and then gradually cleaning smaller cracks and corners, wherein the adopted wind speed is gradually reduced;
fifthly, protecting the marked lines and the kerbs, and sticking the parts to be protected by using adhesive tapes with corresponding sizes;
Sixthly, spraying the bottom maintenance layer with the spraying amount of 0.1-0.2 kg/m, and spraying the second time for 0.5-1 hour after natural air drying; when the local air-drying failure exists, the active air-drying mode is adopted for treatment, and the layer can seal micro cracks and surface gaps;
Seventh, spraying the middle layer of the new protecting layer for 0.2-0.3 kg/m of spraying amount, and reversing for 0.5-1 hour after the drying; uniformly spraying by using high-pressure spraying equipment with air, and grasping the spraying amount within a limited range to avoid flowing, so that a spraying layer is adhered to the surface in a film layer mode;
Eighth, spraying the upper new-keeping layer with the spraying amount of 0.3-0.4 kg/m for 1-2 hours, and opening traffic; spraying by using high-pressure spraying equipment with air, and grasping the spraying amount within a limited range to avoid flowing, so that a spraying layer is adhered to the surface in a film layer mode;
And ninth, performing road surface test and formally passing.
The beneficial effects of the invention are as follows: the maintenance structure and the process of the maintenance structure are applied to the asphalt pavement, can not only seal tiny cracks of the asphalt pavement in an initial cracking state, but also excite and restore the performance of the asphalt pavement, and can also add an ultrathin protective film layer to the pavement while repairing the performance of the pavement, so that the pavement can maintain maintenance and update, greatly prolong the service life of the pavement, simultaneously solve two defects of an original fog sealing layer, improve the skid resistance of the pavement and prevent accidents from easily occurring due to small friction force of the pavement.
The spray layer structure adopts a three-layer structure to form an extremely thin film layer structure, wherein the bottom layer curing layer not only can repair pavement cracks, but also can form an anti-slip and anti-falling nanometer self-cleaning curing film layer on the pavement, and the middle layer and the upper layer of the novel layer are additionally provided with double protection on the bottom layer curing layer, so that the durability and the repairing performance of the film layer are further consolidated.
Drawings
FIG. 1 is a schematic view of the spray layer structure of the present invention.
The drawings are marked with the following description: 1-asphalt pavement, 2-bottom layer of protection layer, 3-middle layer of protection layer and 4-upper layer of protection layer.
Detailed Description
The following detailed description of specific embodiments of the invention refers to the accompanying drawings:
The novel nanometer extremely thin fresh-keeping spray layer structure is arranged on the surface of an asphalt pavement 1 to form a fresh-keeping maintenance film layer and mainly comprises a bottom fresh-keeping layer 2, a middle fresh-keeping layer 3 and an upper fresh-keeping layer 4 which are sequentially arranged from the bottom surface to the top, wherein the bottom fresh-keeping layer 2 is a nanometer self-cleaning micro-repairing layer, and the middle fresh-keeping layer 3 and the upper fresh-keeping layer 4 are double-layer protective layers covering the surface of the bottom fresh-keeping layer 2; the double-layer protective layers are all nano curing microstructure layers, more particularly nano sealing curing coating microstructure layers; the nanometer self-cleaning micro-repairing layer is a photocatalysis active nanometer paint layer; the nanometer self-cleaning micro-repairing layer can fill and repair cracks in a spraying process through the nanometer self-cleaning effect, the nanometer curing micro-structure layer can enable the asphalt pavement 1 to be maintained and kept fresh continuously through the curing stabilization effect of the nanometer self-cleaning micro-repairing layer, the double-layer structure is further enhanced, and when the whole three-layer structure is simultaneously applied to the asphalt pavement 1 as a film layer, the pavement can be repaired, and the maintenance and fresh keeping effect can be maintained; the thickness of the bottom layer curing layer 2 is 0.1-0.3 mm, and a film surface structure covered on the asphalt pavement 1 is formed through uniform spraying; the spreading quantity of the bottom layer nutrient layer 2 is 0.1-0.2 kg/m; the thickness of the middle layer fresh-keeping layer 3 is 0.2-0.4 mm, and a film surface structure covering the surface of the bottom layer fresh-keeping layer 2 is formed by spraying; the spreading quantity of the middle layer fresh-keeping layer 3 is 0.2-0.3 kg/m; the thickness of the upper layer fresh-keeping layer 4 is 0.3-0.5 mm, and a film surface structure covering the surface of the middle layer fresh-keeping layer 3 is formed through spraying; the spreading quantity of the upper fresh-keeping layer 4 is 0.3-0.4 kg/m; before spraying, the spray layer structure needs to clean the asphalt pavement 1 to keep a clean surface, and after the spray layer structure is formed, the pavement is kept clean by the self action of the nanometer self-cleaning micro-repair layer and the nanometer curing micro-structure layer and is continuously changed into a new one after repairing cracks; the nanometer self-cleaning micro-repairing layer comprises photocatalyst TiO 2 and air catalyst titanium phosphate, tiO 2 can absorb light with a certain wavelength to generate free electrons and holes, so that pollutants absorbed by the surface of the film are subjected to redox decomposition to remove and kill surface microorganisms, the purpose of self cleaning is achieved, a double-layer nanometer curing micro-structure layer is paved on the surface of the nanometer self-cleaning micro-repairing layer, a slight self-cleaning and fresh-keeping function can be achieved, the effects of improving sanding and wear resistance can be achieved, the effects of hardening, wear resistance and brightening are achieved, the chemical resistance is improved, and the weathering resistance is improved.
The bottom layer protective layer 2 mainly comprises the following components: 0.5 to 1.5 parts of penetrating agent, 0.15 to 2.5 parts of reducing agent, 10 to 15 parts of nano ceramic material, 52 to 65 parts of SBS modified emulsified asphalt and 17 to 37 parts of water; the middle and upper new-keeping layers 3 and 4 mainly comprise the following components: 5 to 10 parts of curing agent, 20 to 25 parts of nano ceramic material, 0.2 to 3 parts of cement, 55 to 71 parts of SBS modified emulsified asphalt and 3 to 7 parts of water; the construction process adopts the raw materials of the components to construct, and is a novel construction process of the nanometer ultrathin maintenance and new spray layer structure, and the construction process mainly comprises the following steps:
In a first step, materials are prepared to prepare a spray layer structure, the raw materials ① comprising: 1.2 parts of penetrating agent, 0.95 part of reducing agent, 13.4 parts of nano ceramic material, 59.5 parts of SBS modified emulsified asphalt and 27 parts of water; raw materials ② include: 7.5 parts of curing agent, 22.5 parts of nano ceramic material, 2.8 parts of cement, 63 parts of SBS modified emulsified asphalt and 5.6 parts of water; the preparation tool is a 100L wide-mouth barrel and a stirrer, the raw materials can be mixed in the 100L wide-mouth barrel and stirred uniformly by the stirrer;
Secondly, preparing a bottom layer protection layer 2: sequentially and respectively adding the penetrating agent, the reducing agent, the nano ceramic material and the water in parts by weight into the SBS modified emulsified asphalt in parts by weight, sequentially and respectively stirring uniformly and storing in a container;
Thirdly, respectively preparing a middle layer protection layer 3 and an upper layer protection layer 4: sequentially and respectively adding the curing agent, the nano ceramic material, the cement and the water in parts by weight into the SBS modified emulsified asphalt in parts by weight, sequentially and respectively stirring uniformly and storing in a container;
Fourth, cleaning the asphalt pavement 1, blowing out the asphalt pavement by adopting a high-pressure fan, performing crack filling treatment on larger cracks of the pavement, and then gradually cleaning smaller cracks and corners, wherein the adopted wind speed is gradually reduced;
fifthly, protecting the marked lines and the kerbs, and sticking the parts to be protected by using adhesive tapes with corresponding sizes;
Sixthly, spraying the bottom layer of the protective layer 2 with the spraying amount of 0.1-0.2 kg/m, and spraying the second layer for 0.5-1 hour after natural air drying; when the local air-drying failure exists, the active air-drying mode is adopted for treatment, and the layer can seal micro cracks and surface gaps;
Seventh, spraying the middle new-keeping layer 3 for 0.2-0.3 kg/m, and reversing for 0.5-1 hour after drying; uniformly spraying by using high-pressure spraying equipment with air, and grasping the spraying amount within a limited range to avoid flowing, so that a spraying layer is adhered to the surface in a film layer mode;
Eighth, spraying the upper fresh-keeping layer 4 with the spraying amount of 0.3-0.4 kg/m for 1-2 hours, and opening traffic; spraying by using high-pressure spraying equipment with air, and grasping the spraying amount within a limited range to avoid flowing, so that a spraying layer is adhered to the surface in a film layer mode;
And ninth, performing road surface test and formally passing.
The foregoing description is only a preferred embodiment of the present invention, and is not intended to limit the technical scope of the present invention, and those skilled in the art may make various changes and modifications within the scope of the technical solution of the present invention, and any modifications, equivalent changes and modifications made to the above embodiments according to the technical matters of the present invention are still within the scope of the technical solution of the present invention.
Claims (4)
1. The novel nanometer ultrathin maintenance and fresh-keeping spray layer structure is characterized in that the spray layer structure is arranged on the surface of an asphalt pavement to form a maintenance and fresh-keeping film layer, and mainly comprises a bottom maintenance layer, a middle maintenance layer and an upper maintenance layer which are sequentially arranged from the bottom surface upwards, wherein the bottom maintenance layer is a nanometer self-cleaning micro-repairing layer, and the nanometer self-cleaning micro-repairing layer is a photocatalytic activity nanometer paint layer; the middle layer protection layer and the upper layer protection layer are double-layer protection layers covering the surface of the bottom layer maintenance layer, and the double-layer protection layers are nano-curing microstructure layers;
The bottom layer curing layer mainly comprises the following components: 0.5 to 1.5 parts of penetrating agent, 0.15 to 2.5 parts of reducing agent, 10 to 15 parts of nano ceramic material, 52 to 65 parts of SBS modified emulsified asphalt and 17 to 37 parts of water;
The middle layer and the upper layer of the new layer mainly comprise the following components: 5 to 10 parts of curing agent, 20 to 25 parts of nano ceramic material, 0.2 to 3 parts of cement, 55 to 71 parts of SBS modified emulsified asphalt and 3 to 7 parts of water.
2. The novel nanometer ultrathin curing and fresh-keeping spraying layer structure according to claim 1, wherein the thickness of the bottom curing layer is 0.1-0.3 mm, the thickness of the middle layer is 0.2-0.4 mm, and the thickness of the upper layer is 0.3-0.5 mm.
3. The novel nanometer ultrathin curing and fresh-keeping spraying layer structure according to claim 1, wherein the spreading amount of the bottom curing layer is 0.1-0.2 kg/m, the spreading amount of the middle layer is 0.2-0.3 kg/m, and the spreading amount of the upper layer is 0.3-0.4 kg/m.
4. A construction process of a novel nano ultrathin curing and fresh-keeping spray layer structure as claimed in any one of claims 1 to 3, which is characterized by mainly comprising the following steps:
In a first step, materials are prepared to prepare a spray layer structure, the raw materials ① comprising: 1.2 parts of penetrating agent, 0.95 part of reducing agent, 13.4 parts of nano ceramic material, 59.5 parts of SBS modified emulsified asphalt and 27 parts of water; raw materials ② include: 7.5 parts of curing agent, 22.5 parts of nano ceramic material, 2.8 parts of cement, 63 parts of SBS modified emulsified asphalt and 5.6 parts of water; the preparation tool is a 100L wide-mouth barrel and a stirrer, the raw materials can be mixed in the 100L wide-mouth barrel and stirred uniformly by the stirrer;
Secondly, preparing a bottom layer protection layer: sequentially and respectively adding the penetrating agent, the reducing agent, the nano ceramic material and the water in parts by weight into the SBS modified emulsified asphalt in parts by weight, sequentially and respectively stirring uniformly and storing in a container;
Thirdly, respectively preparing a middle layer protection layer and an upper layer protection layer: sequentially and respectively adding the curing agent, the nano ceramic material, the cement and the water in parts by weight into the SBS modified emulsified asphalt in parts by weight, sequentially and respectively stirring uniformly and storing in a container;
Fourth, cleaning the asphalt pavement, blowing out the asphalt pavement by adopting a high-pressure fan, performing crack filling treatment on larger cracks of the pavement, and then gradually cleaning smaller cracks and corners, wherein the adopted wind speed is gradually reduced;
fifthly, protecting the marked lines and the kerbs, and sticking the parts to be protected by using adhesive tapes with corresponding sizes;
Sixthly, spraying the bottom maintenance layer with the spraying amount of 0.1-0.2 kg/m, and spraying the second time for 0.5-1 hour after natural air drying; when the local air-drying failure exists, the active air-drying mode is adopted for treatment, and the layer can seal micro cracks and surface gaps;
Seventh, spraying the middle layer of the new protecting layer for 0.2-0.3 kg/m of spraying amount, and reversing for 0.5-1 hour after the drying; uniformly spraying by using high-pressure spraying equipment with air, and grasping the spraying amount within a limited range to avoid flowing, so that a spraying layer is adhered to the surface in a film layer mode;
Eighth, spraying the upper new-keeping layer with the spraying amount of 0.3-0.4 kg/m for 1-2 hours, and opening traffic; spraying by using high-pressure spraying equipment with air, and grasping the spraying amount within a limited range to avoid flowing, so that a spraying layer is adhered to the surface in a film layer mode;
And ninth, performing road surface test and formally passing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201810480932.9A CN108729332B (en) | 2018-05-18 | 2018-05-18 | Novel nanometer ultrathin maintenance and fresh-keeping spray layer and construction process thereof |
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| CN201810480932.9A CN108729332B (en) | 2018-05-18 | 2018-05-18 | Novel nanometer ultrathin maintenance and fresh-keeping spray layer and construction process thereof |
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| CN108729332B true CN108729332B (en) | 2024-04-23 |
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Citations (19)
| Publication number | Priority date | Publication date | Assignee | Title |
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