CN109403192A - Asphalt pavement pit repairing method - Google Patents
Asphalt pavement pit repairing method Download PDFInfo
- Publication number
- CN109403192A CN109403192A CN201811006552.8A CN201811006552A CN109403192A CN 109403192 A CN109403192 A CN 109403192A CN 201811006552 A CN201811006552 A CN 201811006552A CN 109403192 A CN109403192 A CN 109403192A
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- China
- Prior art keywords
- parts
- sealant
- pit repairing
- asphalt pavement
- slot
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Classifications
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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
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J11/00—Features of adhesives not provided for in group C09J9/00, e.g. additives
- C09J11/02—Non-macromolecular additives
- C09J11/04—Non-macromolecular additives inorganic
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J11/00—Features of adhesives not provided for in group C09J9/00, e.g. additives
- C09J11/02—Non-macromolecular additives
- C09J11/06—Non-macromolecular additives organic
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J11/00—Features of adhesives not provided for in group C09J9/00, e.g. additives
- C09J11/08—Macromolecular additives
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J4/00—Adhesives based on organic non-macromolecular compounds having at least one polymerisable carbon-to-carbon unsaturated bond ; adhesives, based on monomers of macromolecular compounds of groups C09J183/00 - C09J183/16
- C09J4/06—Organic non-macromolecular compounds having at least one polymerisable carbon-to-carbon unsaturated bond in combination with a macromolecular compound other than an unsaturated polymer of groups C09J159/00 - C09J187/00
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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
- E01C23/096—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 forming, opening-out, cleaning, drying or heating and filling
Abstract
The invention discloses a kind of asphalt pavement pit repairing methods, comprising the following steps: a. delimit disease range according to disease incidence, with cutting machine along the pit repairing contour line slot delimited；B. the depth of milling slot is determined according to disease severity and is dried after cleaning out slot bottom；C. one layer of sealant is uniformly smeared in slot bottom and cell wall using vehicle-mounted small pitch sprinkling car, then pastes one layer of geotextiles, then smears sealant in geotextiles again；Bituminous concrete prefabricated section is placed in milling slot, and filling with sealant in the seam between bituminous concrete prefabricated section；Construction is not subject to seasonal restrictions, and sealing effect is preferable in work progress, can accomplish full, smooth, clean and tidy, beautiful；It can open to traffic after construction 1 hour；It is observed after 1 year after construction, effect is preferable, no cracking or degumming phenomenon.
Description
Technical field
The present invention relates to a kind of sealants, in particular to one kind is mainly in bituminous concrete prefabricated section pot holes mend method
The sealing material of adhesive layer.
Background technique
In all kinds of damaged forms of bituminous pavement, crack and pit slot these two types breakage account for the largest percentage, also most commonly seen.
Pit repairing primarily directed to the diseases such as pit slot, local check crack, cracking repairing and reinforcement, while can also to local subsidence, gather around
The diseases such as packet and slumping crack are repaired.Pit repairing method is more, generally vulcanizes method, spraying method, hot recycling method etc.
Three kinds of modes.First way is the method for vulcanizing, and repair procedure is to be rooted out that position old pavement need to be mended first with breaking tool, then
Asphalt tack coat is sprayed, fills new mixture, and shakeout, be compacted.The second way is spraying method, and this method utilizes high pressure spray
Mode is penetrated, emulsified asphalt is mixed by the aggregate that jet pipe comes with conveying, passes through lotion, aggregate and the compression on control jet pipe
Air 3 switches uniformly, are at high speed sprayed onto mixture in pit slot, reach closely knit bond effect, without rolling, be not required to drip
Green concrete mixing plant cooperation, and be not affected by climate change.The third mode is hot recycling method, and method for repairing and mending is first will be high
Effect heat radiation heating plate is placed into region to be mended, and softens old asphalt pavement, the old asphalt that then rake pine is softened, sprinkling cream
Changing pitch makes old material situ regeneration, supplements new pitch mixture mix, and pave, be compacted.This method can show old material
Field regeneration, reduces environmental pollution, the wasting of resources, reduces maintenance cost, and climate does not change when carrying out repairing work
It influences.Other than above-mentioned three kinds of pit repairing methods, there are also some special or newly-developed methods.Such as use pitch coagulation
Native prefabricated section repairing.Bituminous concrete prefabricated section is to add the Mineral Aggregate of good gradation and the special equipment of asphalt cement
Hot mix, then the loose mixture mixed is thrown into punching block, it is compacted into press machine with certain consolidation and size
The plate-like material for repairing of specification.The size of fluting repairing should be equal to the multiple of prefabricated section at Damages of Asphalt Road Surface, between prefabricated section
Seam clogged with joint sealing material.Such pit repairing method is relatively simple, and the proportion of material for repairing is relatively easy to control, and compactness can obtain
Guarantee.Especially in severe winter, rainy season, in the case where the tradition method of vulcanizing is not easy development condition or in emergency repairing, pitch is utilized
Concrete precast block pot holes mend is a kind of convenient method.In order to promote and apply this method for repairing and mending, need specifically for
The seam and pit slot edge bonding of prefabricated section are studied with sealant.Concrete joint is had to there is certain elasticity
With the material of leakproofness.
Summary of the invention
In view of this, the purpose of the present invention is to provide a kind of asphalt pavement pit repairing method, used sealant
With excellent mobility, elastoplasticity, caking property, resistance to torsion, weatherability, resistance to acid and alkali, winter softness, summer do not trickle, energy
Enough to be fused together well with road surface protobitumen mixture or cement concrete material, construction is not subject to seasonal restrictions, and is constructed
Sealing effect is preferable in journey, can accomplish full, smooth, clean and tidy, beautiful；It can open to traffic after construction 1 hour；Through one after construction
It is observed after year, effect is preferable, no cracking or degumming phenomenon.
Asphalt pavement pit repairing method of the invention, comprising the following steps: a. delimit disease range according to disease incidence,
With cutting machine along the pit repairing contour line slot delimited；
B. the depth of milling slot is determined according to disease severity and is dried after cleaning out slot bottom；
C. one layer of sealant is uniformly smeared in slot bottom and cell wall using vehicle-mounted small pitch sprinkling car, then pastes one layer
Then geotextiles smear sealant in geotextiles again；Bituminous concrete prefabricated section is placed in milling slot, and mixed in pitch
Filling with sealant in seam between solidifying soil prefabricated section；
The sealant raw material includes following components by weight:
100-150 parts of modified pitch, 30-40 parts of epoxy resin, 15-25 parts of butyl glycol ether, 5-15 parts of n-butanol, methyl
5-10 parts of acrylic acid, 1-5 parts of styrene, 10-20 parts of methacrylic acid triethylene-glycol dibasic acid esters, poly- 2,6- dimethyl -1,4-
2-6 parts of phenylate, 5-10 parts of polyvinyl acetate, 5-10 parts of dimethylethanolamine, α, alpha, omega-dihydroxy polydimethyl siloxane 5-10
Part, 1-5 parts of nano silica, 1-5 parts of graphite powder, 30-40 parts of polypropylene fibre, 10-20 parts of flyash, tackifier 3-15
Part, 1-3 parts of chain extender, 1-3 parts of crosslinking agent, 1-3 parts of plasticizer；
The modified pitch is the block modified pitch of s-B-S, polyethylene modified asphalt or ethylene-
One of vinyl acetate copolymer modified pitch；
The chain extender is made by following manner: by weight by 22-27 parts of gamma carotenes and 9-11 parts of suitable fourths two
Olefin(e) acid acid anhydride is added in organic solvent, solid-liquid ratio 31-38:60g/ml；It is sufficiently mixed uniformly, under 130-170 DEG C, nitrogen protection
D-A occurs and reacts 3-5h；90-95 parts of epoxychloropropane and 0.6-0.8 parts of amine bromides are added into the mixture after reaction again,
It is heated to reflux 5-7h, after being subsequently cooled to 65-75 DEG C, is made after excessive sodium hydrate is added through washing；
The nano silica is handled by following manner: the SiO of 5h will be activated through 400 DEG C2With γ-(methyl
Acryloyl-oxy) propyl trimethoxy silicane mixing after common distribution in the toluene removed water through 3A molecular sieve, ultrasonic disperse
10min is heated to reflux and is cooled down afterwards for 24 hours, is then centrifugated with 13000r/min, and precipitating is washed with dehydrated alcohol and done afterwards for several times
It is dry, by weight SiO2: γ-(methacryloxypropyl) propyl trimethoxy silicane: toluene=1:2:30；
Further, the plasticizer is dimethicone, dibutyl phthalate, dioctyl phthalate, pentachloro-
One or more mixtures of biphenyl, chlorinated paraffin；
Further, the tackifier are 15 parts of rosin glyceryl alcohol, 25 parts of alkyl phenolic resin, 5 parts of styrene resin and two
The mixture of toluene resin 10, by weight rosin glyceryl alcohol: alkyl phenolic resin；Styrene resin: xylene resin=3:
5:1:2；
Further, the crosslinking agent is that methyl trichlorosilane, triethylamine and the ethyl lactate for being 1:3:3 by molar ratio close
At；
Further, the sealant raw material includes following components by weight: 120 parts of modified pitch, 35 parts of epoxy resin,
20 parts of butyl glycol ether, 10 parts of n-butanol, 7 parts of methacrylic acid, 3 parts of styrene, methacrylic acid triethylene-glycol dibasic acid esters
15 parts, poly- 2,6- dimethyl -4 parts of Isosorbide-5-Nitrae-phenylate, 7 parts of polyvinyl acetate, 7 parts of dimethylethanolamine, α, alpha, omega-dihydroxy poly- two
7 parts of methylsiloxane, 3 parts of nano silica, 3 parts of graphite powder, 35 parts of polypropylene fibre, 15 parts of flyash, 10 parts of tackifier,
2 parts of chain extender, 2 parts of crosslinking agent, 2 parts of plasticizer.
Beneficial effects of the present invention: asphalt pavement pit repairing method of the invention, used sealant have excellent
Mobility, elastoplasticity, caking property, resistance to torsion, weatherability, resistance to acid and alkali, winter is soft, summer does not trickle, being capable of same road surface
Protobitumen mixture or cement concrete material are fused together well, and elongation percentage is greater than 300% at 120 DEG C of heat resistance of tool,
Adhesion strength 2.5kg/cm, low-temperature tenderness at -20 DEG C free from flaw, do not remove, elasticity is restored up to 99%.Construction is not limited by season
It makes, sealing effect is preferable in work progress, can accomplish full, smooth, clean and tidy, beautiful；It can open to traffic after construction 1 hour；
It is observed after 1 year after construction, effect is preferable, no cracking or degumming phenomenon.
Specific embodiment
Embodiment one
The asphalt pavement pit repairing method of the present embodiment, the sealant raw material includes following components by weight: being changed
Property 100 parts of pitch, 30 parts of epoxy resin, 15 parts of butyl glycol ether, 5 parts of n-butanol, 5 parts of methacrylic acid, 1 part of styrene, first
10 parts of base acrylic acid triethylene-glycol dibasic acid esters, poly- 2 parts of 2,6- dimethyl -1,4- phenylate, 5 parts of polyvinyl acetate, dimethyl
5 parts of ethanol amine, α, 5 parts of alpha, omega-dihydroxy polydimethyl siloxane, 1 part of nano silica, 1 part of graphite powder, polypropylene fibre 30
Part, 10 parts of flyash, 3 parts of tackifier, 1 part of chain extender, 1 part of crosslinking agent, 1 part of plasticizer；
The modified pitch is the block modified pitch of s-B-S；
The chain extender is made by following manner: by weight by 22 parts of gamma carotenes and 9 parts along butadiene acid anhydrides
It is added in organic solvent, solid-liquid ratio 31:60g/ml；It is sufficiently mixed uniformly, D-A reaction occurs under 130 DEG C, nitrogen protection
3h；90 parts of epoxychloropropane and 0.6 part of amine bromide is added into the mixture after reaction again, is heated to reflux 5h, then cools down
To after 65 DEG C, it is made after excessive sodium hydrate is added through washing
Embodiment two
The asphalt pavement pit repairing method of the present embodiment, the sealant raw material includes following components by weight: being changed
150 parts of pitch of property, 40 parts of epoxy resin, 25 parts of butyl glycol ether, 15 parts of n-butanol, 10 parts of methacrylic acid, 5 parts of styrene,
20 parts of methacrylic acid triethylene-glycol dibasic acid esters, poly- 6 parts of 2,6- dimethyl -1,4- phenylate, 10 parts of polyvinyl acetate, diformazan
10 parts of ethylethanolamine, α, 10 parts of alpha, omega-dihydroxy polydimethyl siloxane, 5 parts of nano silica, 5 parts of graphite powder, tackifier 15
Part, 3 parts of chain extender, 3 parts of crosslinking agent, 3 parts of plasticizer；
The modified pitch is polyethylene modified asphalt；
The chain extender is made by following manner: by weight by 27 parts of gamma carotenes and 11 parts along butadienoic acid
Acid anhydride is added in organic solvent, solid-liquid ratio 38:60g/ml；It is sufficiently mixed uniformly, D-A reaction occurs under 170 DEG C, nitrogen protection
5h；95 parts of epoxychloropropane and 0.8 part of amine bromide is added into the mixture after reaction again, is heated to reflux 7h, then cools down
To after 75 DEG C, it is made after excessive sodium hydrate is added through washing.
Embodiment three
The asphalt pavement pit repairing method of the present embodiment, the sealant raw material includes following components by weight: being changed
Property 100 parts of pitch, 40 parts of epoxy resin, 15 parts of butyl glycol ether, 15 parts of n-butanol, 5 parts of methacrylic acid, 5 parts of styrene, first
10 parts of base acrylic acid triethylene-glycol dibasic acid esters, poly- 6 parts of 2,6- dimethyl -1,4- phenylate, 5 parts of polyvinyl acetate, dimethyl
10 parts of ethanol amine, α, 5 parts of alpha, omega-dihydroxy polydimethyl siloxane, 5 parts of nano silica, 1 part of graphite powder, polypropylene fibre
40 parts, 10 parts of flyash, 15 parts of tackifier, 1 part of chain extender, 3 parts of crosslinking agent, 1 part of plasticizer；
The modified pitch is the block modified pitch of s-B-S, polyethylene modified asphalt or ethylene-
One of vinyl acetate copolymer modified pitch；
The chain extender is made by following manner: by weight by 22 parts of gamma carotenes and 11 parts along butadienoic acid
Acid anhydride is added in organic solvent, solid-liquid ratio 31:60g/ml；It is sufficiently mixed uniformly, D-A reaction occurs under 170 DEG C, nitrogen protection
3h；95 parts of epoxychloropropane and 0.6 part of amine bromide is added into the mixture after reaction again, is heated to reflux 7h, then cools down
To after 65 DEG C, it is made after excessive sodium hydrate is added through washing.
Example IV
The asphalt pavement pit repairing method of the present embodiment, the sealant raw material includes following components by weight: being changed
Property 150 parts of pitch, 30 parts of epoxy resin, 25 parts of butyl glycol ether, 5 parts of n-butanol, 10 parts of methacrylic acid, 1 part of styrene, first
20 parts of base acrylic acid triethylene-glycol dibasic acid esters, poly- 2 parts of 2,6- dimethyl -1,4- phenylate, 10 parts of polyvinyl acetate, dimethyl
5 parts of ethanol amine, α, 10 parts of alpha, omega-dihydroxy polydimethyl siloxane, 1 part of nano silica, 5 parts of graphite powder, polypropylene fibre
30 parts, 20 parts of flyash, 3 parts of tackifier, 3 parts of chain extender, 1 part of crosslinking agent, 3 parts of plasticizer；The modified pitch is ethylene-vinegar
The ethylene copolymer-modified pitch of acid；
The chain extender is made by following manner: by weight by 27 parts of gamma carotenes and 9 parts along butadiene acid anhydrides
It is added in organic solvent, solid-liquid ratio 38:60g/ml；It is sufficiently mixed uniformly, D-A reaction occurs under 130 DEG C, nitrogen protection
5h；90 parts of epoxychloropropane and 0.8 part of amine bromide is added into the mixture after reaction again, is heated to reflux 5h, then cools down
To after 75 DEG C, it is made after excessive sodium hydrate is added through washing.
Embodiment five
The asphalt pavement pit repairing method of the present embodiment, the sealant raw material includes following components by weight: being changed
Property 120 parts of pitch, 33 parts of epoxy resin, 18 parts of butyl glycol ether, 12 parts of n-butanol, 9 parts of methacrylic acid, 4 parts of styrene, first
12 parts of base acrylic acid triethylene-glycol dibasic acid esters, poly- 5 parts of 2,6- dimethyl -1,4- phenylate, 7 parts of polyvinyl acetate, dimethyl
7 parts of ethanol amine, α, 6 parts of alpha, omega-dihydroxy polydimethyl siloxane, 4 parts of nano silica, 1 part of graphite powder, polypropylene fibre 35
Part, 10 parts of flyash, 15 parts of tackifier, 2 parts of chain extender, 1 part of crosslinking agent, 3 parts of plasticizer；
The modified pitch is the block modified pitch of s-B-S, polyethylene modified asphalt or ethylene-
One of vinyl acetate copolymer modified pitch；
The chain extender is made by following manner: by weight by 25 parts of gamma carotenes and 10 parts along butadienoic acid
Acid anhydride is added in organic solvent, solid-liquid ratio 35:60g/ml；It is sufficiently mixed uniformly, D-A reaction occurs under 140 DEG C, nitrogen protection
4h；93 parts of epoxychloropropane and 0.7 part of amine bromide is added into the mixture after reaction again, is heated to reflux 6h, then cools down
To after 68 DEG C, it is made after excessive sodium hydrate is added through washing.
Embodiment six
The asphalt pavement pit repairing method of the present embodiment, the sealant raw material includes following components by weight: being changed
Property 120 parts of pitch, 35 parts of epoxy resin, 20 parts of butyl glycol ether, 10 parts of n-butanol, 7 parts of methacrylic acid, 3 parts of styrene, first
15 parts of base acrylic acid triethylene-glycol dibasic acid esters, poly- 4 parts of 2,6- dimethyl -1,4- phenylate, 7 parts of polyvinyl acetate, dimethyl
7 parts of ethanol amine, α, 7 parts of alpha, omega-dihydroxy polydimethyl siloxane, 3 parts of nano silica, 3 parts of graphite powder, polypropylene fibre 35
Part, 15 parts of flyash, 10 parts of tackifier, 2 parts of chain extender, 2 parts of crosslinking agent, 2 parts of plasticizer；
The modified pitch is the block modified pitch of s-B-S；
The chain extender is made by following manner: by weight by 25 parts of gamma carotenes and 10 parts along butadienoic acid
Acid anhydride is added in organic solvent, solid-liquid ratio 35:60g/ml；It is sufficiently mixed uniformly, D-A reaction occurs under 150 DEG C, nitrogen protection
4h；93 parts of epoxychloropropane and 0.7 part of amine bromide is added into the mixture after reaction again, is heated to reflux 6h, then cools down
To after 68 DEG C, it is made after excessive sodium hydrate is added through washing.
In above-described embodiment, the nano silica is handled by following manner: will be activated 5h's through 400 DEG C
SiO2Common distribution is in the toluene removed water through 3A molecular sieve after mixing with γ-(methacryloxypropyl) propyl trimethoxy silicane
In, ultrasonic disperse 10min is heated to reflux and is cooled down afterwards for 24 hours, is then centrifugated with 13000r/min, and precipitating is washed with dehydrated alcohol
It washs and dries afterwards for several times, by weight SiO2: γ-(methacryloxypropyl) propyl trimethoxy silicane: toluene=1:2:30；
The plasticizer is dimethicone, dibutyl phthalate, dioctyl phthalate, pentachlorodiphenyl, chlorine
One or more mixtures of fossil waxes；
The tackifier are 15 parts of rosin glyceryl alcohol, 25 parts of alkyl phenolic resin, 5 parts of styrene resin and xylene resin
10 mixture, by weight rosin glyceryl alcohol: alkyl phenolic resin；Styrene resin: xylene resin=3:5:1:2；
The crosslinking agent is that methyl trichlorosilane, triethylamine and the ethyl lactate for being 1:3:3 by molar ratio synthesize.
The asphalt pavement pit repairing method of the present embodiment, comprising the following steps: a. delimit disease model according to disease incidence
It encloses, with cutting machine along the pit repairing contour line slot delimited；B. the depth of milling slot is determined according to disease severity and incited somebody to action
Slot bottom is dried after cleaning out；C. using vehicle-mounted small pitch sprinkling car slot bottom and cell wall uniformly smear one layer it is above-mentioned
Then the sealant of embodiment pastes one layer of geotextiles, then smear the sealant of above-described embodiment in geotextiles again；It will drip
Green concrete precast block is placed in milling slot, and above-described embodiment is filled in the seam between bituminous concrete prefabricated section
Sealant
Finally, it is stated that the above examples are only used to illustrate the technical scheme of the present invention and are not limiting, although referring to compared with
Good embodiment describes the invention in detail, those skilled in the art should understand that, it can be to skill of the invention
Art scheme is modified or replaced equivalently, and without departing from the objective and range of technical solution of the present invention, should all be covered at this
In the scope of the claims of invention.
Claims (5)
1. a kind of asphalt pavement pit repairing method, it is characterised in that: the following steps are included: a. delimit disease according to disease incidence
Range, with cutting machine along the pit repairing contour line slot delimited；
B. the depth of milling slot is determined according to disease severity and is dried after cleaning out slot bottom；
C. one layer of sealant is uniformly smeared in slot bottom and cell wall using vehicle-mounted small pitch sprinkling car, then pastes one layer of geotechnique
Then cloth smears sealant in geotextiles again；Bituminous concrete prefabricated section is placed in milling slot, and in bituminous concrete
Filling with sealant in seam between prefabricated section；
The sealant raw material includes following components by weight: 100-150 parts of modified pitch, 30-40 parts of epoxy resin, second two
15-25 parts of alcohol butyl ether, 5-15 parts of n-butanol, 5-10 parts of methacrylic acid, 1-5 parts of styrene, three second two of contracting of methacrylic acid two
10-20 parts of alcohol dibasic acid esters, poly- 2-6 parts of 2,6- dimethyl -1,4- phenylate, 5-10 parts of polyvinyl acetate, dimethylethanolamine 5-10
Part, α, 5-10 parts of alpha, omega-dihydroxy polydimethyl siloxane, 1-5 parts of nano silica, 1-5 parts of graphite powder, polypropylene fibre
30-40 parts, 10-20 parts of flyash, 3-15 parts of tackifier, 1-3 parts of chain extender, 1-3 parts of crosslinking agent, 1-3 parts of plasticizer；
The modified pitch is the block modified pitch of s-B-S, polyethylene modified asphalt or ethyl vinyl acetate
One of ethylene copolymer-modified pitch；
The chain extender is made by following manner: by weight by 22-27 parts of gamma carotenes and 9-11 parts of suitable butadienoic acids
Acid anhydride is added in organic solvent, solid-liquid ratio 31-38:60g/ml；It is sufficiently mixed uniformly, occurs under 130-170 DEG C, nitrogen protection
D-A reacts 3-5h；90-95 parts of epoxychloropropane and 0.6-0.8 parts of amine bromides, heating is added into the mixture after reaction again
Flow back 5-7h, after being subsequently cooled to 65-75 DEG C, is made after excessive sodium hydrate is added through washing；
The nano silica is handled by following manner: the SiO of 5h will be activated through 400 DEG C2With γ-(methacryl
Oxygen) propyl trimethoxy silicane mixing after common distribution in the toluene removed water through 3A molecular sieve, ultrasonic disperse 10min, heating
Reflux cools down afterwards for 24 hours, is then centrifugated with 13000r/min, precipitating is washed with dehydrated alcohol and dried afterwards for several times, by weight
SiO2: γ-(methacryloxypropyl) propyl trimethoxy silicane: toluene=1:2:30.
2. asphalt pavement pit repairing method according to claim 1, it is characterised in that: the plasticizer is dimethyl-silicon
The mixing of one or more of oil, dibutyl phthalate, dioctyl phthalate, pentachlorodiphenyl, chlorinated paraffin
Object.
3. asphalt pavement pit repairing method according to claim 2, it is characterised in that: the tackifier are rosin glycerol
Alcohol, alkyl phenolic resin, styrene resin and xylene resin mixture, by weight rosin glyceryl alcohol: alkyl phenolic tree
Rouge；Styrene resin: xylene resin=3:5:1:2.
4. asphalt pavement pit repairing method according to claim 3, it is characterised in that: the crosslinking agent is by molar ratio
It is synthesized for the methyl trichlorosilane, triethylamine and ethyl lactate of 1:3:3.
5. asphalt pavement pit repairing method according to claim 1, the sealant raw material includes following by weight
Component: 120 parts of modified pitch, 35 parts of epoxy resin, 20 parts of butyl glycol ether, 10 parts of n-butanol, 7 parts of methacrylic acid, benzene second
3 parts of alkene, 15 parts of methacrylic acid triethylene-glycol dibasic acid esters, poly- 4 parts of 2,6- dimethyl -1,4- phenylate, polyvinyl acetate 7
Part, 7 parts of dimethylethanolamine, α, 7 parts of alpha, omega-dihydroxy polydimethyl siloxane, 3 parts of graphite powder, gather at 3 parts of nano silica
35 parts of tacryl, 15 parts of flyash, 10 parts of tackifier, 2 parts of chain extender, 2 parts of crosslinking agent, 2 parts of plasticizer.
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|---|---|---|---|
| CN201811006552.8A CN109403192A (en) | 2018-08-31 | 2018-08-31 | Asphalt pavement pit repairing method |
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| CN201811006552.8A CN109403192A (en) | 2018-08-31 | 2018-08-31 | Asphalt pavement pit repairing method |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111719397A (en) * | 2020-06-22 | 2020-09-29 | 宏腾建设集团有限公司 | Asphalt pavement pit repairing construction method |
| CN111809533A (en) * | 2020-07-09 | 2020-10-23 | 常德市城市桥梁管理处 | Concrete bridge asphalt pavement pit hole repairing method |
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2018
- 2018-08-31 CN CN201811006552.8A patent/CN109403192A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111719397A (en) * | 2020-06-22 | 2020-09-29 | 宏腾建设集团有限公司 | Asphalt pavement pit repairing construction method |
| CN111809533A (en) * | 2020-07-09 | 2020-10-23 | 常德市城市桥梁管理处 | Concrete bridge asphalt pavement pit hole repairing method |
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