CN109082985A - Sheet pavement in-situ heat regeneration construction method - Google Patents
Sheet pavement in-situ heat regeneration construction method Download PDFInfo
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- CN109082985A CN109082985A CN201810925668.5A CN201810925668A CN109082985A CN 109082985 A CN109082985 A CN 109082985A CN 201810925668 A CN201810925668 A CN 201810925668A CN 109082985 A CN109082985 A CN 109082985A
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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
- E01C23/065—Recycling in place or on the road, i.e. hot or cold reprocessing of paving in situ or on the traffic surface, with or without adding virgin material or lifting of salvaged material; Repairs or resurfacing involving at least partial reprocessing of the existing paving
Abstract
The present invention relates to pavement construction technical fields to provide a kind of sheet pavement in-situ heat regeneration construction method for the complex problem of operating procedure, and the technical solution is as follows: including (1) temporary construction fence；(2) maintenance surface is defined；(3) road surface preheats；(4) rake pine, filling；(5) reheating；(6) coal tar is added；(7) cal rolling；(8) open to traffic.By the operation for cold new pitch and stirring are heated and be added on the spot at disease, avoiding carrying out new and old bitumen transportation into heating stirring into mixing plant, construction efficiency is improved.
Description
Technical field
The present invention relates to pavement construction technical fields, more specifically, it relates to which a kind of sheet pavement in-situ heat regeneration is applied
Work method.
Background technique
Hot in-place recycling technology refers to using dedicated On-site heat recycling equipment, carries out live heating to bituminous pavement, turns over
Pine, mix it is a certain number of newly gather materials, new pitch, regenerative agent etc., the processes such as puddled, paved, being rolled, disposable realization is to table
A kind of regenerated technology of the old asphalt concrete pavement for (being usually no more than 6cm) within the scope of the certain depth of face.
Usual hot in-place recycling technology needs virgin material to be carried out preheating and by the old material of scarifying by the horizontal equipment such as cylinder of mixing
Be put into it is horizontal mix be stirred in the equipment such as cylinder after pave again, cause construction when operating procedure it is complex, therefore, also
Improve space.
Summary of the invention
In view of the deficiencies of the prior art, the present invention intends to provide a kind of sheet pavement in-situ heat regeneration construction
Method has the advantages that convenient for operation.
To achieve the above object, the present invention provides the following technical scheme that
A kind of sheet pavement in-situ heat regeneration construction method, comprising the following specific steps
(1) temporary construction fence；
(2) maintenance surface is defined；
(3) road surface preheats, specific as follows:
It is covered by hot recycling equipment to Asphalt Pavement Damage position and is heated 10-20 minutes, 140 DEG C -160 DEG C of temperature；
(4) rake pine, filling, specific as follows:
Towards adding cold new pitch in Bituminous concrete surface and be mixed to form premix pitch after rake pine；
(5) reheating, specific as follows:
Premix pitch is covered by hot recycling equipment and is heated 10-20 minutes, 140 DEG C -160 DEG C of temperature；
(6) coal tar is added, specific as follows:
Coal tar is added and is stirred into mixed pitch eventually；
(7) cal rolling；
(8) open to traffic.
By adopting the above technical scheme, by avoiding to cold new pitch and stirring are heated and be added on the spot at disease
New and old bitumen transportation is carried out to the operation of heating stirring into mixing plant, improves construction efficiency；After being mixed by new Bituminous concrete surface
To reheating is carried out at disease asphalt temperature raising will be premixed, the mobility of pitch is improved, when so that coal tar is added
It is uniform to be conducive to mixed asphalt mixing eventually, while pitch mobility is further increased by coal tar, further increases mixed pitch eventually
The effect stirred evenly, so that new Bituminous concrete surface guarantees that pitch distribution is equal when road surface is spread out and put on while stirring on the spot in order to operate
It is even, and then guarantee that road surface repairing effect is preferable；Due to directly being heated on the spot to pitch by heating device, so that heating drip
Heat is caused to be difficult to scatter and disappear without rolling due to pitch when green, so that it is preferable to the effect of pitch heating, and then guarantee enough add
Hot temperature is easy to stir so that the mobility of pitch is higher, easy to operate.
Preferably, it in the step (6), adds coal tar and after mixing evenly scoops up pitch to expose pit slot, cheating
The bottom of slot and side wall sprinkling hot melt material backfill mixed pitch eventually after forming hot melt layer again.
By adopting the above technical scheme, pitch is mixed in backfill after hot melt layer to be formed by sprinkling hot melt material eventually, utilizes end
The heat of mixed pitch melts hot melt layer, and then improves the attachment force of mixed pitch and pit slot side wall and bottom eventually, improves connection
Stability, and then improve the effect that road surface is repaired.
Preferably, the hot melt material includes one of asphalt adhesive, fuser oil, emulsified asphalt or a variety of.
By adopting the above technical scheme, by using one of asphalt adhesive, fuser oil, emulsified asphalt or a variety of, so that molten
Melt that rear viscosity is larger, the effect for improving mixed pitch and pit slot side wall and bottom attachment force eventually is preferable.
Preferably, the hot melt layer is with a thickness of 0.5mm-1mm.
By adopting the above technical scheme, there are enough hot melt materials after guaranteeing melting with a thickness of 0.5mm-1mm by hot melt layer
Pit slot side wall and bottom permeate while being mixed with mixed pitch eventually, guarantees the effect for improving attachment force, keeps away simultaneously
The case where exempting from hot melt material excessively leads to pitch excess dilution.
Preferably, in the step (7), by road roller roller-compaction, the end for being first compacted pit slot edge mixes pitch and presses again
Real intermediate end mixes pitch.
By adopting the above technical scheme, the end mixed pitch that pitch is compacted centre again is mixed by being first compacted the end at pit slot edge, made
Mixed during pitch is compacted eventually, outer is always compact structure, and diffusion causes to be recessed around when avoiding the pitch from being pressurized
The case where.
Preferably, in the step (8), the open to traffic again after the skin temperature of mixed pitch eventually is lower than 50 DEG C.
By adopting the above technical scheme, it redevelops after the skin temperature of mixed pitch eventually is lower than 50 DEG C traffic, to guarantee to repair
Bituminous pavement afterwards reaches enough intensity, avoids when vehicle driving that asphalt temperature is excessively high leads to intensity deficiency in turn due to mixed eventually
Situations such as generating impression, recess.
Preferably, in the step (4), Bituminous concrete surface: new pitch=1:0.5-1.5.
By adopting the above technical scheme, pass through Bituminous concrete surface: new pitch=1:0.5-1.5 is to guarantee enough new pitch for mentioning
High intensity, while guaranteeing suitable Bituminous concrete surface doping level with energy conservation and environmental protection.
Preferably, the new pitch added in the step (4) includes the component of following mass fraction:
100 parts of pitch
10-15 parts of butadiene-styrene rubber
Fiber 20-40 parts of volcano
0.5-1.5 parts of crosslinking agent
It is 5-10 parts oily.
By adopting the above technical scheme, the elasticity that mixed pitch eventually is improved by the way that butadiene-styrene rubber is added, passes through cross-linking agents
So that butadiene-styrene rubber forms reticular structure in conjunction with pitch, so that the elasticity of mixed pitch is higher eventually, while structural stability is higher；
The mobility for increasing new pitch by the way that oil is added, so that new pitch is easy to mix with Bituminous concrete surface；By the way that volcano fiber is added, utilize
Wetting and suction-operated of the pitch to mineral-filled material, so that pitch, which is arranged in volcano fiber surface with unimolecule state, forms knot
Firm asphalt film with joint efforts is formed " structure pitch ", due to structure pitch viscosity with higher and heat resistance, improves end
The viscosity and heat resistance of mixed pitch；Since volcano fiber has preferable insulating properties, heat insulation is preferable, so that new Bituminous concrete surface
It mixes and cools down to hinder heat to conduct downwards, so that the case where the basic part heat damage of bitumen layer after forming layer structure
It reduces, so that the heat resistance of bitumen layer structure is more preferable；Simultaneously because the excellent physical properties of volcano fiber, are mended using volcano fiber
By force, so that pavement structural strength is higher after repairing, road surface is easy to crack, deformation, so that pitch preferably protects internal junction
Filler in structure and incorporation pitch, and then reduce the damage of the sun, rainwater to bitumen layer internal structure and filler, it improves
The service life of whole mixed pitch.
Preferably, the new pitch further includes the component of following mass fraction:
5-10 parts of neoprene
1-3 parts of organo montmorillonite
3-4 parts of ceramic powders
3-5 parts of polyethylene glycol.
By adopting the above technical scheme, by the way that neoprene is added the skid resistance of mixed pitch eventually is highly improved；It is logical
It crosses organo montmorillonite to be distributed in pitch, forms protective layer using the layer structure of organo montmorillonite, it is heat-insulated using organo montmorillonite
It is formed simultaneously complicated barrier layer, so that the deleterious moleculars such as oxygen molecule, ozone molecule, sulfur dioxide molecule are intended to enter mixed drip eventually
Difficulty increases when green internal, thereby reduces deleterious molecular to the speed of mixed pitch internal structure damage eventually, extends road surface
Service life；By the way that ceramic powders are added, using the intensity and wearability of ceramic powders, improve the intensity of mixed pitch eventually with
And structural stability, while the wearability of mixed pitch eventually is improved；By the way that polyethylene glycol is added, the water suction of polyethylene glycol is utilized
Property, the moisture absorption inside mixed pitch eventually will be penetrated into time, is reduced moisture and is impregnated mixed pitch internal structure and various fillers eventually,
Moisture corrosion damage is reduced, while at high temperature, the moisture evaporation that polyethylene glycol absorbs is played certain cooling effect, slowed down
Road surface is exposed to the sun the case where cracking.
Preferably, the volcano fibre length is 5mm-10mm, and the molecular weight polyethylene glycol is not less than 8000.
It by adopting the above technical scheme, is 5mm-10mm by volcano fibre length, so that volcano fiber has enough length
Spend so that " structure pitch " area coverage is larger so that reinforcing effect is preferable, simultaneously because the area coverage of volcano fiber is larger,
So that the effect of volcano fibrous thermal is more preferable, while reducing that volcano fiber is too long to lead to the case where tangling when processing；Pass through poly- second
Glycol molecular weight is not less than 8000, so that the fusing point of polyethylene glycol guarantees the stability of polyethylene glycol at 60 DEG C or more.
In conclusion the invention has the following advantages:
1. being avoided new and old bitumen transportation extremely by cold new pitch and stirring are heated and be added on the spot at disease
The operation that heating stirring is carried out in mixing plant, improves construction efficiency；
2. cooperating coal tar to improve pitch mobility simultaneously by the temperature that reheating improves premix pitch is conducive to end
Mixed asphalt mixing is uniform, so that new Bituminous concrete surface guarantees that pitch distribution is equal when road surface is spread out and put on while stirring on the spot in order to operate
It is even, and then guarantee that road surface repairing effect is preferable；
3. due to directly being heated on the spot to pitch by heating device, so that it is preferable to the effect of pitch heating, into
And guarantee enough heating temperatures, and so that the mobility of pitch is higher, it is easy to stir, it is easy to operate；
4. by the way that volcano fiber, wetting and suction-operated using pitch to mineral-filled material, so that pitch is with list is added
Molecular state is arranged in the asphalt film that volcano fiber surface forms firm binding force, is formed " structure pitch ", since structure drips
Green viscosity with higher and heat resistance, improve the viscosity and heat resistance of mixed pitch eventually.
Specific embodiment
With reference to embodiments, invention is further described in detail.
Embodiment 1
A kind of sheet pavement in-situ heat regeneration construction method, comprising the following specific steps
(1) temporary construction fence, specific as follows:
Traffic control is carried out according to safety work regulation, puts road safety marker, is established around road disease interim
For enclosing to surround disease region, the distance of temporary construction fence to disease edge is 1 meter.
(2) maintenance surface is defined, specific as follows:
Maintenance surface is defined according to the working face size piecemeal of hot recycling equipment, the size of maintenance surface is the work of hot recycling equipment
Make the 90% of face size, repairing work is carried out according to the maintenance face dividing defined.
In the present embodiment, hot recycling equipment uses hot recycling equipment generally in the art, specifically, using asphalt surface hot
Regenerate heating plate.
(3) road surface preheats, specific as follows:
Asphalt surface hot reproduction heating plate is covered to Asphalt Pavement Damage position and is pushed against with bituminous pavement, by asphalt road
The working face of face hot recycling heating plate and the centering of disease position, starting asphalt surface hot reproduction heating plate are pre- to carrying out at disease
Heat, preheating temperature are 140 DEG C, preheating time 20 minutes.
(4) rake pine, filling, specific as follows:
After preheating, heated disease position is manually subjected to rake pine, is harrowed before pine in roadmarking to identify heating
Range, the heated pitch that only rake pine is crossed in range during rake is loose, avoids causing to damage to the unheated pitch in periphery
It is bad.
After rake pine, cold new pitch is added, manually new Bituminous concrete surface is mixed thoroughly to form premix pitch by scoop, will be premixed
Pitch is laid in pit slot and tentatively flattens on surface.
Bituminous concrete surface: the ratio of new pitch is 1:0.5.
(5) reheating, specific as follows:
Asphalt surface hot reproduction heating plate is covered to premix pitch upper surface and is compacted, starting asphalt surface hot reproduction adds
Hot plate carries out reheating, and reheating temperature is 140 DEG C, the reheating time 20 minutes.
Guarantee that the temperature of premix pitch is higher by reheating, guarantees the mobility of premix pitch, simultaneously because secondary
It heats so that cold burden can be used in the new pitch being added in step (4), without preheating, reduction operating procedure.
(6) coal tar is added, specific as follows:
Coal tar is added to the premix pitch after reheating, manually pitch will be premixed with scoop and is mixed rapidly with coal tar
It is even, and by the temperature of infrared temperature detection device real-time monitoring premix pitch, if premix asphalt temperature drops to 130 DEG C not yet
It mixes thoroughly, then needs to carry out temperature of the step (5) to promote premix pitch again, guarantee that premix pitch has enough mobility to guarantee
Premix pitch and coal tar are mixed thoroughly to form mixed pitch eventually.
Premix pitch: coal tar=1:0.1.
Then mixed pitch eventually is scooped up and is placed on by pit slot, then towards the bottom of pit slot and side wall sprinkling hot melt material
Material is to form hot melt layer, and the thickness control of hot melt layer is in 0.5-1mm.
Hot melt material is fuser oil.
Then backfill mixes pitch eventually, and tentatively flattens, and the heat using mixed pitch eventually makes fuser oil melt and permeate
Part is penetrated into mixed pitch eventually simultaneously on the bottom of pit slot and side wall, improves the attachment force of mixed pitch and pit slot eventually.
(7) cal rolling, specific as follows:
By road roller roller-compaction, in the present embodiment, road roller uses road roller generally in the art, specially small-sized
Vibratory roller.
When rolling, the end that first will be close to pit slot edge mixes asphalt compaction, is gradually rolling to pit slot center, is finally being compacted again
The end at pit slot center mixes pitch, so that the periphery that the end being pressurized mixes pitch is in compaction state always, whole mixed pitch is avoided to be pressurized
When around diffusion cause recess the case where.
(8) open to traffic, specific as follows:
Eventually after mixed asphalt compaction, natural cooling mixes asphalt surface course temperature by the detection of infrared temperature detection device, to end eventually
Open to traffic, the whole mixed pitch of guarantee cool down enough to avoid with enough intensity again after mixed asphalt surface course is stablized lower than 50 DEG C
The case where recess is resulted in during vehicle to run at damage reparation.
By preheating at disease and harrowing pine, new pitch cold burden is then added on the spot and mixes thoroughly on the spot, then passes through reheating
So that the new and old asphalt temperature after mixing thoroughly improves, coal tar is added compared with high fluidity and is again stirring for, utilizes drip
Green oil further increases pitch mobility, so that mixed pitch is easy to stir eventually, uniformity is preferable, guarantees to make while quality
Must operate becomes more easy.
The new pitch added in step (4) includes the component of following mass fraction:
100 parts of pitch；10 parts of butadiene-styrene rubber；20 parts of volcano fiber；0.5 part of crosslinking agent；5 parts of oil.
In the present embodiment, crosslinking agent generally in the art, specially peroxide cross-linking agent is can be used in crosslinking agent.
In the present embodiment, volcano fibre length cuts into 5mm-10mm.
In the present embodiment, pitch generally in the art, specially No. 70 matrix pitches is can be used in pitch.
In the present embodiment, oil uses oil generally in the art, specially rubber oil.
In the present embodiment, butadiene-styrene rubber generally in the art, specially SBR1502 is can be used in butadiene-styrene rubber.
New pitch the preparation method is as follows:
(1) butadiene-styrene rubber is put on open mill, roller speed 20r/min, roll spacing 5mm, plasticate 30s, and 20% volcano is added
Fiber, roller speed 30r/min, roll spacing 4mm are kneaded 30s, and crosslinking agent is added, and roller speed 30r/min, roll spacing 3mm are kneaded 60s, roller speed
45r/min, roll spacing 1.5mm, are kneaded 60s, and dumping forms rubber compound.
(2) rubber compound is put into extruder and is squeezed out, and by underwater pelletizer pelletizing, rubber compound, which is cut into partial size, is
The rubber compound particle of 0.5mm-2mm is with spare.
(3) pitch is put into stirred tank and is heated to conserving 2h after 200 DEG C, stop heating, oily, revolving speed 10r/min is added,
60s is stirred, remaining volcano fiber, revolving speed 20r/min is added, stirring to asphalt temperature drops to 130 DEG C, is added in step (2)
Rubber compound particle, revolving speed 30r/min, stir 5min, temperature is constant at 130 DEG C, completes the preparation of new pitch.
Embodiment 2
The difference from embodiment 1 is that:
In step (3), preheating temperature is 150 DEG C, and preheating time is 15 minutes.
In step (5), preheating temperature is 150 DEG C, and preheating time is 15 minutes.
Embodiment 3
The difference from embodiment 1 is that:
In step (3), preheating temperature is 160 DEG C, and preheating time is 10 minutes.
In step (5), preheating temperature is 160 DEG C, and preheating time is 10 minutes.
Embodiment 4
The difference from embodiment 1 is that:
In step (3), preheating temperature is 158 DEG C, and preheating time is 16 minutes.
In step (5), preheating temperature is 158 DEG C, and preheating time is 18 minutes.
Embodiment 5
Difference with embodiment 4 is:
In step (4), Bituminous concrete surface: new pitch=1:1.
Embodiment 6
Difference with embodiment 4 is:
In step (4), Bituminous concrete surface: new pitch=1:1.5.
Embodiment 7
Difference with embodiment 5 is:
A kind of elastomeric new pitch of high viscosity, the component including following mass fraction:
100 parts of pitch；12 parts of butadiene-styrene rubber；25 parts of volcano fiber；0.8 part of crosslinking agent；7 parts of oil.
Embodiment 8
Difference with embodiment 5 is:
A kind of elastomeric new pitch of high viscosity, the component including following mass fraction:
100 parts of pitch；15 parts of butadiene-styrene rubber；30 parts of volcano fiber；1.5 parts of crosslinking agent；10 parts of oil.
Embodiment 9
Difference with embodiment 5 is:
A kind of elastomeric new pitch of high viscosity, the component including following mass fraction:
100 parts of pitch；14 parts of butadiene-styrene rubber；35 parts of volcano fiber；1.3 parts of crosslinking agent；8 parts of oil.
Embodiment 10
Difference with embodiment 5 is:
A kind of elastomeric new pitch of high viscosity, the component including following mass fraction:
100 parts of pitch；14 parts of butadiene-styrene rubber；40 parts of volcano fiber；1.3 parts of crosslinking agent；8 parts of oil.
Embodiment 11
Difference with embodiment 5 is:
A kind of elastomeric new pitch of high viscosity, the component including following mass fraction:
100 parts of pitch；14 parts of butadiene-styrene rubber；38 parts of volcano fiber；1.3 parts of crosslinking agent；8 parts of oil.
Embodiment 12
Difference with embodiment 5 is:
A kind of elastomeric new pitch of high viscosity, the component including following mass fraction:
100 parts of pitch；14 parts of butadiene-styrene rubber；38 parts of volcano fiber；1.3 parts of crosslinking agent；8 parts of oil；5 parts of neoprene.
In the present embodiment, neoprene generally in the art, specially CR1223 is can be used in neoprene.
New pitch the preparation method is as follows:
(1) butadiene-styrene rubber and neoprene are put on open mill, roller speed 20r/min, roll spacing 5mm, are kneaded 30s, add
Entering 20% volcano fiber, roller speed 30r/min, roll spacing 4mm are kneaded 30s, it is added crosslinking agent, roller speed 30r/min, roll spacing 3mm,
It is kneaded 60s, roller speed 45r/min, roll spacing 1.5mm, is kneaded 60s, dumping forms rubber compound.
(2) rubber compound is put into extruder and is squeezed out, and by underwater pelletizer pelletizing, rubber compound, which is cut into partial size, is
The rubber compound particle of 0.5mm-2mm is with spare.
(3) pitch is put into stirred tank and is heated to conserving 2h after 200 DEG C, stop heating, oily, revolving speed 10r/min is added,
60s is stirred, remaining volcano fiber, revolving speed 20r/min is added, stirring to asphalt temperature drops to 130 DEG C, is added in step (2)
Rubber compound particle, revolving speed 30r/min, stir 5min, temperature is constant at 130 DEG C, completes the preparation of new pitch.
Embodiment 13
Difference with embodiment 12 is:
A kind of elastomeric new pitch of high viscosity, the component including following mass fraction:
100 parts of pitch；14 parts of butadiene-styrene rubber；38 parts of volcano fiber；1.3 parts of crosslinking agent；8 parts of oil；7 parts of neoprene.
Embodiment 14
Difference with embodiment 12 is:
A kind of elastomeric new pitch of high viscosity, the component including following mass fraction:
100 parts of pitch；14 parts of butadiene-styrene rubber；38 parts of volcano fiber；1.3 parts of crosslinking agent；8 parts of oil；10 parts of neoprene.
Embodiment 15
Difference with embodiment 12 is:
A kind of elastomeric new pitch of high viscosity, the component including following mass fraction:
100 parts of pitch；14 parts of butadiene-styrene rubber；38 parts of volcano fiber；1.3 parts of crosslinking agent；8 parts of oil；8 parts of neoprene.
Embodiment 16
Difference with embodiment 12 is:
A kind of elastomeric new pitch of high viscosity, the component including following mass fraction:
100 parts of pitch；14 parts of butadiene-styrene rubber；38 parts of volcano fiber；1.3 parts of crosslinking agent；8 parts of oil；8 parts of neoprene；Have
1 part of machine montmorillonite.
In the present embodiment, organo montmorillonite generally in the art is can be used in organo montmorillonite, specially cation-modified to have
Machine montmorillonite.
New pitch the preparation method is as follows:
(1) butadiene-styrene rubber and neoprene are put on open mill, roller speed 20r/min, roll spacing 5mm, are kneaded 30s, add
Entering the volcano fiber of the machine montmorillonite and 20% that have 50%, roller speed 30r/min, roll spacing 4mm are kneaded 30s, crosslinking agent is added,
Roller speed 30r/min, roll spacing 3mm are kneaded 60s, roller speed 45r/min, roll spacing 1.5mm, are kneaded 60s, and dumping forms rubber compound.
(2) rubber compound is put into extruder and is squeezed out, and by underwater pelletizer pelletizing, rubber compound, which is cut into partial size, is
The rubber compound particle of 0.5mm-2mm is with spare.
(3) pitch is put into stirred tank and is heated to conserving 2h after 200 DEG C, stop heating, oily, revolving speed 10r/min is added,
60s is stirred, remaining volcano fiber is added and remaining organo montmorillonite, revolving speed 20r/min, stirring to asphalt temperature drop to
130 DEG C, the rubber compound particle in step (2) is added, revolving speed 30r/min stirs 5min, and temperature is constant at 130 DEG C, completes new drip
Green preparation.
Embodiment 17
Difference with embodiment 16 is:
A kind of elastomeric new pitch of high viscosity, the component including following mass fraction:
100 parts of pitch；14 parts of butadiene-styrene rubber；38 parts of volcano fiber；1.3 parts of crosslinking agent；8 parts of oil；8 parts of neoprene；Have
2 parts of machine montmorillonite.
Embodiment 18
Difference with embodiment 16 is:
A kind of elastomeric new pitch of high viscosity, the component including following mass fraction:
100 parts of pitch；14 parts of butadiene-styrene rubber；38 parts of volcano fiber；1.3 parts of crosslinking agent；8 parts of oil；8 parts of neoprene；Have
3 parts of machine montmorillonite.
Embodiment 19
Difference with embodiment 16 is:
A kind of elastomeric new pitch of high viscosity, the component including following mass fraction:
100 parts of pitch；14 parts of butadiene-styrene rubber；38 parts of volcano fiber；1.3 parts of crosslinking agent；8 parts of oil；8 parts of neoprene；Have
2 parts of machine montmorillonite；3 parts of ceramic powders.
In the present embodiment, ceramic powders use ceramic powders generally in the art, and ceramic powders partial size is 100nm-
150nm。
New pitch the preparation method is as follows:
(1) butadiene-styrene rubber and neoprene are put on open mill, roller speed 20r/min, roll spacing 5mm, are kneaded 30s, add
Entering 50% organo montmorillonite and 20% volcano fiber, roller speed 30r/min, roll spacing 4mm are kneaded 30s, crosslinking agent is added,
Roller speed 30r/min, roll spacing 3mm are kneaded 60s, roller speed 45r/min, roll spacing 1.5mm, are kneaded 60s, and dumping forms rubber compound.
(2) rubber compound is put into extruder and is squeezed out, and by underwater pelletizer pelletizing, rubber compound, which is cut into partial size, is
The rubber compound particle of 0.5mm-2mm is with spare.
(3) pitch is put into stirred tank and is heated to conserving 2h after 200 DEG C, stop heating, oily, revolving speed 10r/min is added,
60s is stirred, remainder volcano fiber, remaining organo montmorillonite and whole ceramic powders, revolving speed 20r/min, stirring to drip is added
Green temperature drops to 130 DEG C, is added the rubber compound particle in step (2), revolving speed 30r/min, stirs 5min, temperature it is constant
130 DEG C, complete the preparation of new pitch.
Embodiment 20
Difference with embodiment 19 is:
A kind of elastomeric new pitch of high viscosity, the component including following mass fraction:
100 parts of pitch；14 parts of butadiene-styrene rubber；38 parts of volcano fiber；1.3 parts of crosslinking agent；8 parts of oil；8 parts of neoprene；Have
2 parts of machine montmorillonite；3.5 parts of ceramic powders.
Embodiment 21
Difference with embodiment 19 is:
A kind of elastomeric new pitch of high viscosity, the component including following mass fraction:
100 parts of pitch；14 parts of butadiene-styrene rubber；38 parts of volcano fiber；1.3 parts of crosslinking agent；8 parts of oil；8 parts of neoprene；Have
2 parts of machine montmorillonite；4 parts of ceramic powders.
Embodiment 22
Difference with embodiment 19 is:
A kind of elastomeric new pitch of high viscosity, the component including following mass fraction:
100 parts of pitch；14 parts of butadiene-styrene rubber；38 parts of volcano fiber；1.3 parts of crosslinking agent；8 parts of oil；8 parts of neoprene；Have
2 parts of machine montmorillonite；4 parts of ceramic powders；3 parts of polyethylene glycol.
In the present embodiment, the polyethylene glycol that molecular weight generally in the art is not less than 8000 is can be used in polyethylene glycol, specifically
For PEG 8000.
New pitch the preparation method is as follows:
(1) butadiene-styrene rubber and neoprene are put on open mill, roller speed 20r/min, roll spacing 5mm, are kneaded 30s, add
Entering 50% organo montmorillonite and 20% volcano fiber, roller speed 30r/min, roll spacing 4mm are kneaded 30s, crosslinking agent is added,
Roller speed 30r/min, roll spacing 3mm are kneaded 60s, roller speed 45r/min, roll spacing 1.5mm, are kneaded 60s, and dumping forms rubber compound.
(2) rubber compound is put into extruder and is squeezed out, and by underwater pelletizer pelletizing, rubber compound, which is cut into partial size, is
The rubber compound particle of 0.5mm-2mm is with spare.
(3) pitch is put into stirred tank and is heated to conserving 2h after 200 DEG C, only heated, oil and polyethylene glycol is added, turned
Fast 10r/min stirs 60s, and remaining volcano fiber, remaining organo montmorillonite and whole ceramic powders, revolving speed 20r/ is added
Min, stirring to asphalt temperature drop to 130 DEG C, and the rubber compound particle in step (2) is added, and revolving speed 30r/min stirs 5min,
Temperature is constant at 130 DEG C, completes the preparation of new pitch.
Embodiment 23
Difference with embodiment 22 is:
A kind of elastomeric new pitch of high viscosity, the component including following mass fraction:
100 parts of pitch；14 parts of butadiene-styrene rubber；38 parts of volcano fiber；1.3 parts of crosslinking agent；8 parts of oil；8 parts of neoprene；Have
2 parts of machine montmorillonite；4 parts of ceramic powders；4 parts of polyethylene glycol.
Embodiment 24
Difference with embodiment 22 is:
A kind of elastomeric new pitch of high viscosity, the component including following mass fraction:
100 parts of pitch；14 parts of butadiene-styrene rubber；38 parts of volcano fiber；1.3 parts of crosslinking agent；8 parts of oil；8 parts of neoprene；Have
2 parts of machine montmorillonite；4 parts of ceramic powders；5 parts of polyethylene glycol.
Embodiment 25
Difference with embodiment 22 is:
A kind of elastomeric new pitch of high viscosity, the component including following mass fraction:
100 parts of pitch；14 parts of butadiene-styrene rubber；38 parts of volcano fiber；1.3 parts of crosslinking agent；8 parts of oil；8 parts of neoprene；Have
2 parts of machine montmorillonite；4 parts of ceramic powders；4 parts of polyethylene glycol.
Crosslinking agent is grouped as by the group of following ratio:
Sulphur: promotor=1:0.8.
Sulphur uses sulphur powder generally in the art in the present embodiment.
Promotor uses promotor generally in the art, specially diphenylguanidine in the present embodiment.
Comparative example 1
The difference from embodiment 1 is that:
Step (1) temporary construction fence, specific as follows:
Traffic control is carried out according to safety work regulation, puts road safety marker, is established around road disease interim
For enclosing to surround disease region, the distance of temporary construction fence to disease edge is 1 meter；New pitch was carried out in two hours in advance pre-
Heat, preheating temperature are 120 DEG C.
Step (4) rake pine, filling, specific as follows:
After preheating, heated disease position is manually subjected to rake pine, is harrowed before pine in roadmarking to identify heating
Range, the heated pitch that only rake pine is crossed in range during rake is loose, avoids causing to damage to the unheated pitch in periphery
It is bad.
After rake pine, Bituminous concrete surface is scooped up and be added it is horizontal mix in cylinder, be warming up to 140 DEG C, revolving speed 20r/min, stir 20 points
Clock is to form premix pitch, and simultaneously coal tar is added in 140 DEG C of constant temperature, revolving speed 20r/min, stirs 20 minutes to form mixed pitch eventually.
Bituminous concrete surface: the ratio of new pitch is 1:0.5.
Premix pitch: coal tar=1:0.1.
Towards the bottom of pit slot and side wall sprinkling hot melt material to form hot melt layer, the thickness control of hot melt layer is in 0.5-
1mm。
Hot melt material is fuser oil.
Then backfill mixes pitch eventually, and tentatively flattens, and the heat using mixed pitch eventually makes fuser oil melt and permeate
Part is penetrated into mixed pitch eventually simultaneously on the bottom of pit slot and side wall, improves the attachment force of mixed pitch and pit slot eventually.
Cancel former step (5), step (6).
Former step (7) is changed to new step (5), and former step (8) is changed to new step (6).
Comparative example 2
Difference with comparative example 1 is:
In step (4), Bituminous concrete surface: the ratio of new pitch is 1:1.
Comparative example 3
Difference with comparative example 1 is:
In step (4), Bituminous concrete surface: the ratio of new pitch is 1:1.5.
Comparative example 4
Difference with embodiment 5 is:
100 parts of pitch；14 parts of butadiene-styrene rubber；1.3 parts of crosslinking agent；8 parts of oil.
New pitch the preparation method is as follows:
(1) butadiene-styrene rubber is put on open mill, roller speed 20r/min, roll spacing 5mm, plasticate 30s, roller speed 30r/min, roller
Away from 4mm, it is kneaded 30s, crosslinking agent is added, roller speed 30r/min, roll spacing 3mm are kneaded 60s, roller speed 45r/min, roll spacing 1.5mm, mix
60s is refined, dumping forms rubber compound.
(2) rubber compound is put into extruder and is squeezed out, and by underwater pelletizer pelletizing, rubber compound, which is cut into partial size, is
The rubber compound particle of 0.5mm-2mm is with spare.
(3) pitch is put into stirred tank and is heated to conserving 2h after 200 DEG C, stop heating, oily, revolving speed 10r/min is added,
60s, revolving speed 20r/min are stirred, stirring to asphalt temperature drops to 130 DEG C, and the rubber compound particle in step (2), revolving speed is added
30r/min stirs 5min, and temperature is constant at 130 DEG C, completes the preparation of new pitch.
Comparative example 5
Difference with embodiment 5 is:
100 parts of pitch；14 parts of butadiene-styrene rubber；8 parts of oil.
New pitch the preparation method is as follows:
(1) butadiene-styrene rubber is put on open mill, roller speed 20r/min, roll spacing 5mm, plasticate 30s, roller speed 30r/min, roller
Away from 4mm, it is kneaded 30s, roller speed 30r/min, roll spacing 3mm, is kneaded 60s, roller speed 45r/min, roll spacing 1.5mm, is kneaded 60s, dumping
Form rubber compound.
(2) rubber compound is put into extruder and is squeezed out, and by underwater pelletizer pelletizing, rubber compound, which is cut into partial size, is
The rubber compound particle of 0.5mm-2mm is with spare.
(3) pitch is put into stirred tank and is heated to conserving 2h after 200 DEG C, stop heating, oily, revolving speed 10r/min is added,
60s, revolving speed 20r/min are stirred, stirring to asphalt temperature drops to 130 DEG C, and the rubber compound particle in step (2), revolving speed is added
30r/min stirs 5min, and temperature is constant at 130 DEG C, completes the preparation of new pitch.
Detection data is shown in Table 1-7
According to GB/T4507-2014 " asphalt softening point measuring method " (ring and ball method), the end of embodiment and comparative example is detected
The softening point of mixed pitch.
According to GB/T4508-2010 " effecting determination of asphalt ductility method ", the end for detecting embodiment and comparative example mixes prolonging for pitch
Degree.
According to GB/T4509-2010 " Asphalt Penetration measuring method ", the end for detecting embodiment and comparative example mixes pitch
Needle penetration.
1 comparative example 1-5 detection data of table
2 embodiment 1-6 detection data of table
3 embodiment 7-11 detection data of table
| Embodiment 7 | Embodiment 8 | Embodiment 9 | Embodiment 10 | Embodiment 11 | |
| Softening point (DEG C) | 101.8 | 101.8 | 102.7 | 104.6 | 103.7 |
| Ductility (cm) | 84.7 | 84.2 | 84.5 | 84.6 | 84.5 |
| Needle penetration (0.1mm) | 56.1 | 55.6 | 55.0 | 54.5 | 54.8 |
4 embodiment 12-15 detection data of table
| Embodiment 12 | Embodiment 13 | Embodiment 14 | Embodiment 15 | |
| Softening point (DEG C) | 103.7 | 102.7 | 103.7 | 103.7 |
| Ductility (cm) | 83.9 | 83.4 | 82.8 | 83.2 |
| Needle penetration (0.1mm) | 54.7 | 54.8 | 54.6 | 54.6 |
5 embodiment 16-18 detection data of table
| Embodiment 16 | Embodiment 17 | Embodiment 18 | |
| Softening point (DEG C) | 107.5 | 109.4 | 113.2 |
| Ductility (cm) | 83.1 | 83.2 | 83.1 |
| Needle penetration (0.1mm) | 54.0 | 53.6 | 53.0 |
6 embodiment 19-21 detection data of table
| Embodiment 19 | Embodiment 20 | Embodiment 21 | |
| Softening point (DEG C) | 113.2 | 112.3 | 113.2 |
| Ductility (cm) | 83.1 | 83.0 | 83.1 |
| Needle penetration (0.1mm) | 50.9 | 50.4 | 49.8 |
7 embodiment 22-25 detection data of table
It can be obtained according to table 1, as new pitch doping level increases, softening point is risen, i.e., improves to a certain extent mixed eventually
The heat resistance of pitch, while ductility is declined, i.e., improve the elasticity of mixed pitch eventually to a certain extent, at the same needle penetration under
Drop improves the viscosity of mixed pitch eventually to a certain extent.
It can be obtained according to table 1, by the way that crosslinking agent is added butadiene-styrene rubber is crosslinked with pitch, ductility is decreased obviously, i.e., effectively
The elasticity of mixed pitch eventually is improved, while softening point significantly improves, that is, effectively improves the heat resistance of mixed pitch eventually, while needle penetration is bright
Aobvious decline effectively improves the viscosity of mixed pitch eventually.
It can be obtained according to table 1 and table 2, in a certain range, the variation of preheating time and preheating temperature is to mixed pitch eventually
Performance have no significant effect；In a certain range, the variation of reheating time and reheating temperature is to mixed pitch eventually
Performance has no significant effect；It is mixed eventually using mixing new Bituminous concrete surface on the spot and passing through addition coal tar after reheating and mix thoroughly on the spot
The method of pitch, by the horizontal method comparison mixing cylinder and being stirred to new Bituminous concrete surface and coal tar, is mixed with traditional for whole
The performance of pitch has no significant effect；It is easily operated while keeping road surface repairing quality.
It can be obtained according to table 1 and table 3, by the way that volcano fiber is added, needle penetration is decreased obviously, that is, effectively improves mixed pitch eventually
Viscosity, softening point obviously rises, that is, effectively improves the heat resistance of mixed pitch eventually, ductility is without significant change, no negative effect；Benefit
Wetting and suction-operated with pitch to mineral-filled material are formed so that pitch is arranged in volcano fiber surface with unimolecule state
The asphalt film of firm binding force is formed " structure pitch ", due to structure pitch viscosity with higher and heat resistance, is improved
The viscosity and heat resistance of mixed pitch eventually；Using volcano fibrous reinforcement, so that mixed pitch is difficult to separate eventually, so that mixed pitch is not easy eventually
Cracking protects mixed pitch internal structure and each filler eventually；And it, will be so that heat by the preferable heat-proof quality of volcano fiber
It is difficult to conduct to the basic part of mixed bitumen layer structure eventually, and then improves the stability of mixed bitumen layer structure eventually, reduce simultaneously
Heat is conducted to mixed pitch eventually, so that internal structure lasts a long time.
It can be obtained according to table 3 and table 4, by the way that neoprene is added, ductility is declined, that is, adds somewhat to end
The elasticity of mixed pitch, while needle penetration and gentle words point have no significant change, without obvious counter productive；Utilize the anti-of neoprene
Sliding characteristic, so that the non-skid property of mixed pitch is preferable eventually；The preferable water resistance of neoprene, weatherability are utilized simultaneously, guarantee it
The service life of itself, and then guarantee the service life of mixed pitch eventually.
It can be obtained according to table 4 and table 5, by the way that organo montmorillonite is added, softening point obviously rises, that is, effectively increases mixed eventually
The heat resistance of pitch, while needle penetration and ductility have no significant change, without obvious counter productive；It is using organo montmorillonite
Multilayered structure, so that layer structure forms the channel of protective layer and complexity after organo montmorillonite is scattered in mixed pitch eventually, so that
Heat conduction is very difficult, and then improves the heat resistance of mixed pitch eventually；Meanwhile the protective layer formed using organo montmorillonite,
So that the deleterious moleculars such as oxygen molecule, ozone molecule, sulfur dioxide molecule are difficult to enter inside mixed pitch eventually, deleterious molecular is reduced
Erosion to mixed pitch internal structure eventually, improves the service life of mixed pitch eventually.
It can be obtained according to table 5 and table 6, by the way that ceramic powders are added, needle penetration is declined, i.e., improved to a certain extent
The viscosity of mixed pitch eventually, while ductility and softening point have no significant change, without obvious counter productive；Using ceramic powders to end
Mixed strengthening with asphalt improves the intensity of mixed pitch eventually, so that mixed pitch viscosity increases eventually；It is superior resistance to using ceramic powders simultaneously
Mill property improves the wear-resisting property of mixed pitch eventually.
It can be obtained according to table 6 and table 7, after polyethylene glycol is added, needle penetration, ductility and softening point have no significant change,
Without obvious counter productive；Using the superior water imbibition of polyethylene glycol, so that penetrating into the whole moisture mixed inside pitch by polyethylene glycol
It absorbs rapidly, and then reduces the case where moisture attack mixes pitch internal structure eventually, while under burning sun high temperature, while polyethylene glycol
In moisture evaporation, take away partial heat, reduce the damage for road pavement of being exposed to the sun, reduce road surface and be exposed to the sun the case where cracking.
By crosslinking agent using sulfur cross-linking system as crosslinking agent, softening point obviously rises, that is, effectively improves mixed drip eventually
Green heat resistance, ductility are decreased obviously, that is, effectively improve the elasticity of mixed pitch eventually, and needle penetration, without significant change, nothing is obvious negative
Face effect；Stable cross-linked network is generated using sulfur cross-linking system, while sulfur cross-linking system heat-resistant stability is higher, so that
The heat resistance of mixed pitch improves eventually；Since the sulfurizing temperature range of sulfur cross-linking system is wider so that processing performance applicability compared with
It is good.
This specific embodiment is only explanation of the invention, is not limitation of the present invention, those skilled in the art
Member can according to need the modification that not creative contribution is made to the present embodiment after reading this specification, but as long as at this
All by the protection of Patent Law in the scope of the claims of invention.
Claims (10)
1. a kind of sheet pavement in-situ heat regeneration construction method, it is characterized in that: comprising the following specific steps
(1) temporary construction fence；
(2) maintenance surface is defined；
(3) road surface preheats, specific as follows:
It is covered by hot recycling equipment to Asphalt Pavement Damage position and is heated 10-20 minutes, 140 DEG C -160 DEG C of temperature；
(4) rake pine, filling, specific as follows:
Towards adding cold new pitch in Bituminous concrete surface and be mixed to form premix pitch after rake pine；
(5) reheating, specific as follows:
Premix pitch is covered by hot recycling equipment and is heated 10-20 minutes, 140 DEG C -160 DEG C of temperature；
(6) coal tar is added, specific as follows:
Coal tar is added and is stirred into mixed pitch eventually；
(7) cal rolling；
(8) open to traffic.
2. sheet pavement in-situ heat regeneration construction method according to claim 1, it is characterized in that: adding in the step (6)
Add coal tar and after mixing evenly scoop up pitch to expose pit slot, is formed in the bottom of pit slot and side wall sprinkling hot melt material
Mixed pitch eventually is backfilled after hot melt layer again.
3. sheet pavement in-situ heat regeneration construction method according to claim 2, it is characterized in that: the hot melt material includes
One of asphalt adhesive, fuser oil, emulsified asphalt are a variety of.
4. sheet pavement in-situ heat regeneration construction method according to claim 3, it is characterized in that: the hot melt layer with a thickness of
0.5mm-1mm。
5. sheet pavement in-situ heat regeneration construction method according to claim 1, it is characterized in that: leading in the step (7)
Road roller roller-compaction is crossed, the end for being first compacted pit slot edge mixes pitch and is compacted mixed pitch of intermediate end again.
6. sheet pavement in-situ heat regeneration construction method according to claim 1, it is characterized in that: in the step (8), to
The skin temperature of mixed pitch is lower than after 50 DEG C open to traffic again eventually.
7. sheet pavement in-situ heat regeneration construction method according to claim 1, it is characterized in that: in the step (4), it is old
Pitch: new pitch=1:0.5-1.5.
8. sheet pavement in-situ heat regeneration construction method according to claim 1, it is characterized in that: adding in the step (4)
The new pitch added includes the component of following mass fraction:
100 parts of pitch
10-15 parts of butadiene-styrene rubber
Fiber 20-40 parts of volcano
0.5-1.5 parts of crosslinking agent
It is 5-10 parts oily.
9. sheet pavement in-situ heat regeneration construction method according to claim 8, it is characterized in that: the new pitch further includes
The component of following mass fraction:
5-10 parts of neoprene
1-3 parts of organo montmorillonite
3-4 parts of ceramic powders
3-5 parts of polyethylene glycol.
10. sheet pavement in-situ heat regeneration construction method according to claim 9, it is characterized in that: the volcano fiber is long
Degree is 5mm-10mm, and the molecular weight polyethylene glycol is not less than 8000.
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