CN108914753A - A kind of airport asphalt concrete pavement preventive maintenance method - Google Patents
A kind of airport asphalt concrete pavement preventive maintenance method Download PDFInfo
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- CN108914753A CN108914753A CN201810835108.0A CN201810835108A CN108914753A CN 108914753 A CN108914753 A CN 108914753A CN 201810835108 A CN201810835108 A CN 201810835108A CN 108914753 A CN108914753 A CN 108914753A
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- asphalt
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- seam
- pit slot
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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
- E01C23/03—Arrangements for curing paving; Devices for applying curing means; Devices for laying prefabricated underlay, e.g. sheets, membranes; Protecting paving under construction or while curing, e.g. use of tents
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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
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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
- E01C23/098—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 and working the surface of the filling or applying particulate material thereto, e.g. smoothing, gritting
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- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Mining & Mineral Resources (AREA)
- Road Paving Structures (AREA)
- Road Repair (AREA)
Abstract
The present invention relates to pavement of road conservation technology fields, and in particular to a kind of airport asphalt concrete pavement preventive maintenance method, using following steps:Step 1:Crack treatment, using following steps；1) preparation stage before constructing；2) it slots the stage；3) cleaning in crack and drying stage；4) cementation of fissures sessions；5) cementation of fissures quality testing stage；Step 2；Pit slot processing, using following steps；1) preparation of construction 2) delimit digging range；3) pit slot is excavated；4) pit slot is cleared up；5) spread sticking layer oil；6) rolled asphalt mixture is backfilled:7) joint seal waterproof；Step 3；Asphalt pavement regeneration sealing；It improves with that can improve road conditions and exercises quality, extends pavement life, reduces life cycle cost.
Description
Technical field
The present invention relates to pavement of road conservation technology fields, and in particular to a kind of airport asphalt concrete pavement is preventative to support
Maintaining method.
Background technique
With social development, great change is also had occurred in the trip tool of people, and aircraft is efficiently quickly handed over as a kind of
Logical tool is widely used.In order to promote national economy lasting, fast-developing, foundation construction field is still long-term in country
Development plan gives special assistance to direction, air transportation with it efficiently, efficiently operation way and important strategic value increasingly by
To attention, therefore, in recent years, newly-built, reconstructed or expanded airport quantity also grows continuously and fast.
And frequently takeoff and landing is also increasing to the load of Airport Asphalt.Therefore it is directed to airport pitch road
The maintenance problem in face is increasingly paid attention to.Compared with conventional cement concrete track, bituminous concrete runway is seamless, driving is relaxed
Suitable, maintenance is convenient, therefore, has become the main body of airfield pavement.However, since asphalt durability can poor, asphalt pavement
Service life is far below cement concrete constructions, moreover, just will appear early disease using very short time, in unfavourable season, these
Disease can be developed with geometry speed.Therefore, asphalt pavement service life and quality are improved, it is most important to prevent early damage.
Domestic airport runway early disease has：Crack, infiltration, purt slurry, pit slot, loose, they are to cause airfield runway road
The principal element of face early damage, final embodiment are that the deterioration of flatness makes runway begin to delay or stopping caused destruction
It is in good state eventually, and maintenance cost can be saved, it is more necessary to use simple, economical and effective preventive maintenance.
It is planned that assessment and preventive maintenance periodically are carried out to airfield runway safety, stability, comfort etc., it is runway pavement
Some technical parameters are improved, and can stop the diseases such as crack in a long time to destruction caused by road face.
Traditional curing method is just handled after often there is disease, easily leads to the drawbacks of take stopgap measures,
Overlapping investment is also larger.Preventive maintenance is carried out, then can largely mitigate such drawback, while also reducing cost,
Improve maintenance efficiency.Road face preventive maintenance passes through regular highway condition investigation, finds road surface little damage and disease mark in time
As its producing cause of analyzing and researching takes protectiveness maintenance measure to the ill, small disease further expansion is prevented, to slow down
Face or Pavement Condition speed of worsening, make face or road surface be in good service state always.
Summary of the invention
In view of the defects and deficiencies of the prior art, the present invention intends to provide a kind of airport asphalt concrete pavement is pre-
Anti- property maintenance process, it improves with that can improve road conditions and exercises quality, extends pavement life, reduces life cycle cost.
A kind of airport asphalt concrete pavement preventive maintenance method of the present invention, using following steps:
Step 1:Crack treatment, using following steps：
1) preparation stage before constructing：
I) according to the conversion area and depth in crack, prepare emulsified asphalt satisfactory enough or pitch and filler material；
II performance checking then) is carried out to pouring machine, it is ensured that its bitumen pipeline, pitch spray gun are unimpeded, and high-pressure hot air blows roasting device pressure
Power is enough, temperature is suitable；
2) it slots the stage：
I) the tiny irregular cracks for slit width within 5mm can generally be incited somebody to action due to being difficult to directly pour into pointing
Seam spreads to deep 40mm, wide 12mm；II) with sweep seam machine to extension it is new seam and original wider old seam clean, scan out
The sundries come will be removed in time, in order to which gap-grouting material and the face Yuan Dao bond；
3) cleaning in crack and drying stage：
I roasting spray gun is blown with high-pressure hot air after) slotting, the compressed air after heating is blowed to crack, clear out the rubble in seam
With the sundries such as powder；II) the road plane materiel material heating of fracture two sides simultaneously, thus the temperature for reducing gap-grouting material and being poured
Difference；
4) cementation of fissures sessions：
I) start pouring machine, gap-grouting material is heated, when gap-grouting material temperature reaches operating temperature, carry out cementation of fissures work
Industry；It II, should be immediately using inhaling the problems such as in order to protect not solidified gap-grouting material, prevent wheelprint) after cementation of fissures operation
Material is received, so that they adhere to pointing surface, as temporary covering；
5) cementation of fissures quality testing stage：
I) whether the inspection cementation of fissures is linearly smooth, appearance neat and tidy, and sealing material is substantially concordant with road face；II it) checks and fills
Whether abundant full, the surfacing of seam, grainless micelle or the knot that becomes silted up, drag mark is without extra gap-grouting material；III) after rolling not
Deformation is fallen off, is kept sufficiently resilient；
Step 2：Pit slot processing, using following steps：
1) preparation of construction：I) probe pit slot type and degree of disease determine Disease Processing range and depth；II) root
Prepare sticking layer oil material and asphalt according to former road noodles type；III traffic closing) is carried out to disease section, allocates and transports construction machine
Tool guarantees each equipment normal operation of constructing；
2) digging range delimited：According to " circular hole side is mended, and oblique hole is just mended " principle, pit slot maintenance surface delimited；Maintenance surface is at square
Shape, surrounding people having a common goal face graticule is parallel or vertical, and range will be in actual pit trough rim；
3) pit slot is excavated：I the bituminous concrete of damage) is cut；II) using Hydraulic pick or grooving machine along the maintenance model delimited
Enclose joint-cutting, it is desirable that joint-cutting is vertical, and the bituminous concrete in maintenance range is dug pine with equipment such as Hydraulic picks, and waste material is walked clearly；
It is excavated when excavation from centre to four sides, in order to avoid damage trimming, it is desirable that it excavates and arrives intact, stable bottom surface；III) when processing depth
Too deep when needing layered rolling, each layer cuts face and to form step, and step width is not less than 10cm；
4) pit slot is cleared up：I) to after excavation pit slot bottom and surrounding handle, ravelled spot occur will cut completely, out
Existing crack will do the processing of cementation of fissures joint seal, and be removed the loose pellet of pit slot bottom, four walls completely with wire brush；II) with blowing
Machine dries up the sundries such as the floating ash in ponding, watermark and repairing range in pit slot；
5) spread sticking layer oil：Spread sticking layer oil is wanted on pit slot bottom surface and four walls, improves the bonding of new-old concrete；Sticking layer oil
Spread is answered uniformly, without leakage to spill, without trickling；
6) rolled asphalt mixture is backfilled:
I hot-mix asphalt mixture) is inserted into pit slot and is rolled, when layering is repaired, placement in layers, layered rolling；II it) returns
When filling out asphalt, even, leveling is pushed away with plate is bulldozed, number is controlled, prevent number from excessively causing fines product in bottom surface, coarse fodder
It stays in surface, leads to mixture segregation；It when III) rolling, is compacted with small-size vibratory roller or plate compactor, first rolls hole
Four side of slot again successively to centre promote, guarantee road face entirety flatness and new and old road face seam it is smooth, simultaneously for seam
Place can suitably increase rolling layer, improve compactness, prevent in the future that seam is loose, infiltration；
7) joint seal waterproof：It is uniformly applied in the new old asphalt concrete seam of repairing face surrounding with pitch class binder；
Step 3：Asphalt pavement regeneration sealing, using following steps：
1) equipment prepares：Strength brusher, full-automatic pitch sprinkling car；
2) preparation of maintaining runway agent：It is made of high performance modified bitumen, water, modifying agent, film forming agent and additive；By matter
The proportion for measuring percentage is as follows：High performance modified bitumen 60-80%, water 20-45%, modifying agent 10-35%, film forming agent 10-
35% and additive 2-15%；
Wherein：
I) high performance modified bitumen：For split fastly type cation type emulsified asphalt；
II) water：Insoluble impurities, pH value must not be contained in water without harmful solubility salt for clean and drinkable water
It need to control in 6-8, temperature is between 10-26.7 DEG C；
III) modifying agent：SBR latex；
IV) film forming agent：For alcohols；
V) additive：For regenerative agent, slow setting or coagulant, storage stabilizing agent or tackifier.
3) process flow：
I) face Xian Dao is detected, and is then cleaned using strength brusher to the face Yuan Dao surface, is determined the width in face and to be applied
The length of work；II) according to I) area that calculates of the width in the face Zhong Dao and the length gauge to be constructed, to determine spread width and spread
Amount；III) construction protective emblem line on the road spread Hou face；IV) pitch regeneration sealing construction：The maintaining runway agent that will be prepared for
It is placed in full-automatic pitch sprinkling car, spread construction is carried out to road face；Rubbing for the road Zai Dui face is controlled coefficient and is examined after construction
It surveys, then carries out closing health again, it is finally open to use；V) detection is checked and accepted：The detection of asphalt pavement regeneration sealing delivery receiving acceptance
Content mainly includes：The detection of road sweat coefficient, road surface construction depth detection and the detection of road face coefficient of friction.
Further, pitch class binder is bitumen regenerant, rapid-setting emulsified asphalt.
Further, spread sticking layer oil is asphalt adhesive, emulsified asphalt or the foamed asphalt of heat.
After adopting the above structure, the present invention has the beneficial effect that：A kind of airport asphalt concrete pavement of the present invention is pre-
Anti- property maintenance process, it forms the processing of the maintenance to road face using crack treatment, pit slot processing and asphalt pavement regeneration sealing, it
It with road conditions can be improved, improves and exercises quality, extend pavement life, reduce life cycle cost.
Detailed description of the invention
Described herein the drawings are intended to provide a further understanding of the invention, constitutes part of this application, but
It does not constitute improper limitations of the present invention, in the accompanying drawings：
Fig. 1 be not conserving in the present invention before the face Yuan Dao schematic diagram；
Fig. 2 is the road face schematic diagram after maintenance of the invention.
Specific embodiment
With specific embodiment, the present invention will be described in detail below, and illustrative examples therein and explanation are only used to explain
The present invention, but it is not as a limitation of the invention.
A kind of airport asphalt concrete pavement preventive maintenance method described in present embodiment, using following step
Suddenly:
Step 1:Crack treatment, using following steps：
Classification of rifts：Asphalt pavement damage can be divided into function decaying and structural failure modes on the whole, the former shows
For the decline of road face service ability, flatness and antiskid reduced performance；The latter cause face structural-load-carrying capacity reduction, with crack,
The forms such as pit slot show；Crack be in all kinds of damages of asphalt pavement it is most common, most easily occur and earliest caused disease it
One, it and is aggravated along with the entire validity period of asphalt pavement with the growth in road age；
Equipment prepares：Groover, pouring machine, hair dryer；Above equipment is：The model of Shandong Xiang Gong Machinery Co., Ltd.
The road surface slotting machine of XKC-300, model XCF-450 road pavement air blower and the road surface model XGF-200 bitumen crack-pouring machine；
1) preparation stage before constructing：
I) according to the conversion area and depth in crack, prepare emulsified asphalt satisfactory enough or pitch and filler material；
II performance checking then) is carried out to pouring machine, it is ensured that its bitumen pipeline, pitch spray gun are unimpeded, and high-pressure hot air blows roasting device pressure
Power is enough, temperature is suitable；
2) it slots the stage：
I) the tiny irregular cracks for slit width within 5mm can generally be incited somebody to action due to being difficult to directly pour into pointing
Seam spreads to deep 40mm, wide 12mm；II) with sweep seam machine to extension it is new seam and original wider old seam clean, scan out
The sundries come will be removed in time, in order to which gap-grouting material and the face Yuan Dao bond；
3) cleaning in crack and drying stage：
I roasting spray gun is blown with high-pressure hot air after) slotting, the compressed air after heating is blowed to crack, clear out the rubble in seam
With the sundries such as powder；
II) the road plane materiel material heating of fracture two sides simultaneously, so that the temperature difference for reducing gap-grouting material and being poured, makes two
Person combines under " hot-hot " environment, the phenomenon that " twice seam " occurs after avoiding repairing；
4) cementation of fissures sessions：
I) start pouring machine, gap-grouting material is heated, when gap-grouting material temperature reaches operating temperature, carry out cementation of fissures work
Industry；Cementation of fissures operation carries out immediately after crack cleaning and drying, to reduce crack secondary pollution；
It II, should be immediately the problems such as in order to protect not solidified gap-grouting material, prevent wheelprint) after cementation of fissures operation
Using absorbing material, so that they adhere to pointing surface, as temporary covering；
5) cementation of fissures quality testing stage：
I) whether the inspection cementation of fissures is linearly smooth, appearance neat and tidy, and sealing material is substantially concordant with road face；II it) checks and fills
Whether abundant full, the surfacing of seam, grainless micelle or the knot that becomes silted up, drag mark is without extra gap-grouting material；III) after rolling not
Deformation is fallen off, is kept sufficiently resilient；
Step 2：Pit slot processing, using following steps：
Pit slot is the Common Diseases of asphalt pavement, and pit slot not only influences the overall beautiful of road, but also influences the row of aircraft
Safety and comfortable is sailed, is also easy to make aircraft that there was a mechanical failure and damage, or even causes safety accident.Therefore, on road face
The pit slot of appearance should be repaired in time；Asphalt pavement pit slot generallys use digging type pit repairing method and is handled, it is
The cutting of irregular asphalt concrete pavement pit slot is rectangular, i.e., according to the principle of " circular hole side is mended, and oblique hole is just mended ", excavate disease
Evil road face, will under pit slot bottom surface dig to intact part or by bottom surface Disease Processing it is thorough after, addition new pitch mixture pressed
Real molding.Since the technique is thorough to Disease Processing, long service life after maintenance be can reach 2~5 years, can be maintained to road mask
Face or in repair, therefore also referred to as permanent repair；
Material prepares：Patching material for routine servicing is mainly the hot-mix asphalt mixture of various specifications, repairs material
Material should have enough intensity, good height temperature stability, stronger water stability and fatigue resistance.
Equipment prepares：Small-sized mixing apparatus, excavation equipment (grooving machine, Hydraulic pick), cleaning equipment (hair dryer), compacting are set
Standby (plate compactor, baby roller)；
1) preparation of construction：
I) probe pit slot type and degree of disease determine Disease Processing range and depth；
II sticking layer oil material and asphalt) are prepared according to former road noodles type；
III traffic closing) is carried out to disease section, allocates and transports construction equipment, guarantees each equipment normal operation of constructing；
2) digging range delimited：According to " circular hole side is mended, and oblique hole is just mended " principle, pit slot maintenance surface delimited；Maintenance surface is at square
Shape, surrounding people having a common goal face graticule is parallel or vertical, and range will be in actual pit trough rim；
3) pit slot is excavated：
I the bituminous concrete of damage) is cut；
II) using Hydraulic pick or grooving machine along the maintenance range joint-cutting delimited, it is desirable that joint-cutting is vertical, and is set with Hydraulic pick etc.
The standby bituminous concrete by maintenance range digs pine, and waste material is walked clearly；It is excavated when excavation from centre to four sides, in case damage is cut
Side, it is desirable that excavate and arrive intact, stable bottom surface；
III) when processing depth is too deep need layered rolling when, each layer cuts face and to form step, and step width is not less than
10cm；On the one hand it prevents from forming vertical straight joint, rainwater is avoided directly quickly to penetrate into maintenance bottom surface；On the other hand in layered rolling
When, can guarantee can grinding compacting at every layer of girth seam；
4) pit slot is cleared up：
I) to after excavation pit slot bottom and surrounding handle, ravelled spot occur will cut completely, and crack occur will do
The processing of cementation of fissures joint seal, and removed the loose pellet of pit slot bottom, four walls completely with wire brush；
II the sundries such as the floating ash in ponding, watermark and the repairing range in pit slot) are dried up with hair dryer；
5) spread sticking layer oil：Spread sticking layer oil is wanted on pit slot bottom surface and four walls, improves the bonding of new-old concrete；Sticking layer oil
Spread is answered uniformly, without leakage to spill, without trickling；Spread sticking layer oil is asphalt adhesive, emulsified asphalt or the foamed asphalt of heat；
6) rolled asphalt mixture is backfilled:
I hot-mix asphalt mixture) is inserted into pit slot and is rolled, when layering is repaired, placement in layers, layered rolling；
When II) backfilling asphalt, even, leveling is pushed away with plate is bulldozed, number is controlled, prevent number from excessively causing fines
Product is stayed in bottom surface, coarse fodder in surface, and mixture segregation is caused；
It when III) rolling, is compacted with small-size vibratory roller or plate compactor, first rolls four side of pit slot again successively in
Between promote, guarantee road face entirety flatness and new and old road face seam it is smooth, can suitably increase stone roller simultaneously for seam crossing
Number is pressed, compactness is improved, prevents in the future that seam is loose, infiltration；
7) joint seal waterproof：
I it) is uniformly applied in the new old asphalt concrete seam of repairing face surrounding, is on the one hand played anti-with pitch class binder
Water effect, on the other hand prevents that seam crossing asphalt is loose, gnaws side；Pitch class binder is bitumen regenerant, fast curdled milk
Change pitch；
Step 3：Asphalt pavement regeneration sealing, using following steps：
Using special equipment by the uniform spread to asphalt pavement of bituminous pavement sealing material with excellent permeability,
The deficiency for compensating for traditional mist sealing material such as emulsified asphalt and modified emulsifying asphalt can be very good to prevent and solve asphalt road
The early disease problem that face occurs.Cost of New Type Asphalt Pavement regeneration sealing material penetrates into old road surfaces, activates the pitch of aging,
It updates and goes back the already oxidised pitch lotion of original surface, to extend the service life on road surface.
Asphalt pavement regeneration sealing can postpone the generation of the other diseases in road surface, maintain the use function on road surface, extend road
Service life；Its construction technology is simple, and open to traffic is rapidly (2 to 3 hour can open to traffic).Its main function
Be waterproof, closing microcrack, supplement pitch bonding material, stablize it is loose gather materials, closing road surface prevents bitumen blowing and generates
The color of bituminous pavement is deepened in aging；Increase bituminous pavement and the contrast of graticule etc..Asphalt pavement regeneration sealing can be effective
Improve surface feature, hence it is evident that improve needle penetration, softening point and the ductility of aged asphalt, but asphalt pavement regeneration sealing covers are not
The structural-load-carrying capacity on road surface can be changed, therefore, it is complete that asphalt pavement regeneration sealing covers are mainly used for bearing capacity of pavement structure
On the road surface of good appearance early damage.
Sealing material can fill out envelope minute crack and surface void, play waterproof and inhibit loose effect, prevent face
The further aging of material；It improves road face antiskid performance, avoid Moisture Damage, reach protection road face structure, extend road face service life
Purpose, be a kind of cost-effective preventive maintenance measure；
Asphalt pavement regeneration sealing covers are suitable for the diseases such as surface generation infiltration, oil-poor, microscopic checks and aging is serious
Runway Surface and Expressway Asphalt maintaining runway, according to on-site actual situations need to decide whether need add gold
Hard rock aggregate, if coefficient of sliding resistance is completely qualified after maintaining runway agent construction, the technique of diamond dust addition can be completely left out, because
Later period diamond dust is inoperative；
Asphalt pavement regeneration sealing covers be primarily adapted for use in there is early stage microcrack, road surface gather materials loose, pitted skin and
The serious equal earlier period damages of pavement seepage, and road face composite quality index at this time is more than good and good.It is specific as follows：
A, asphalt pavement regeneration sealing covers produce minute crack suitable for the face Yuan Dao road table, and fracture width is 1~3
Crack should be pre-processed for there is the road surface in the cracks such as serious check crack, cracking, after stablizing, then take drip by ㎜ or so
Green pavement recycling sealing covers.
B, former road surface road table is loose, or even pitted skin occurs, road surfaces asphalt stripping or aging and when intact structural strength, can
Asphalt pavement regeneration sealing covers are taken, discrete aggregate is effectively bonded, repair aged asphalt；Improve road surface appearance.
C, when former road surfaces infiltration coefficient increases, road surface appearance infiltration is serious or more serious, and pavement structural strength and knot
When structure is intact, pavement seepage can be effectively prevented using asphalt pavement regeneration sealing covers, prevent water infiltration soften base and
Roadbed protects base and roadbed, reduces or prevents Water Damage
4) equipment prepares：Strength brusher, full-automatic pitch sprinkling car；Qinhuangdao Lulong County Lu Tong Engineering Machinery Plant
SL-1500II type strength cleaning machine for road surface；The full-automatic pitch sprinkling car of Cheng Li special purpose vehicle limited liability company production；
5) preparation of maintaining runway agent：
Maintaining runway agent is made of high performance modified bitumen, water, modifying agent, film forming agent and additive；By mass percentage
Proportion it is as follows：High performance modified bitumen 60-80%, water 20-45%, modifying agent 10-35%, film forming agent 10-35% and additional
Agent 2-15%；
Wherein：
I) high performance modified bitumen：For split fastly type cation type emulsified asphalt；It is that asphalt pavement curing agent is most main
The material wanted, emulsified asphalt used in asphalt pavement conserving sealing are necessary for cation type, do not have to the de-emulsification speed of lotion
The problems such as being strict with, but considering the construction time, it is proposed that using splitting type fastly, and relative to common road emulsified asphalt,
The granularity of its lotion is thinner, and asphalt emulsion must uniformly, not have the independence that cannot be easily re-dispersed after appropriate agitation
Or condensation composition.Its technical requirements is as follows：
Lotion physical characteristics：
II) water：Insoluble impurities, pH value must not be contained in water without harmful solubility salt for clean and drinkable water
It need to control in 6-8, temperature is between 10-26.7 DEG C；
III) modifying agent：SBR latex；
It is modified using SBR latex, effect is the high temperature performance for improving sealing material；The performance indicator of SBR is such as
Under：
| Pilot project | Performance indicator |
| Mode of appearance (25 DEG C) | Milky white liquid |
| Particle charging | Cationic (+) |
| Active matter content/% | ≥62 |
| Viscosity/(Mpa.s) | 10~60 |
| Specific gravity (25 DEG C)/(g/cm3) | 1.03±0.05 |
| pH | 3~5 |
| Chemical stability (CaCl2)/% | ≥10 |
| Mechanical stability (5min)/% | ≥10 |
IV) film forming agent：For alcohols
The effect of film forming agent is mainly conducive to the molding of sealing and improves stability of emulsion and uniformity；Maintaining runway
The film forming agent that agent uses is generally alcohols.Its performance indicator see the table below：
| Pilot project | It is required that |
| Average degree of polymerization | ≥1500 |
| Alcoholysis degree/(mol/mol) | 85~100 |
| Viscosity/(Mpa.s) | 18~35 |
| Volatile matter/% | ≤10 |
| Ash content/% | ≤3 |
| pH | 5~7 |
| Purity/% | ≥90 |
V) additive：For regenerative agent, slow setting or coagulant, storage stabilizing agent or tackifier.According to road surface actual conditions with
And the particular/special requirement of engineering, a small amount of additive can be added in maintaining runway agent sealing material；Maintaining runway agent commonly adds
Agent is added to have regenerative agent, slow setting or coagulant, storage stabilizing agent, tackifier etc..
VI) asphalt pavement regeneration maintaining runway agent technical requirement
| Detection project | Technical requirements |
| Temperature/DEG C | ﹤ 50 |
| Specific gravity (25 DEG C)/(g/m3) | ≥1.04 |
| En Gela viscosity (50 DEG C)/s | ≤50 |
| Substance content/% | ≥50 |
| Rotary viscosity (25 DEG C)/(Mpas) | ﹥ 5000 |
| Flash-point/DEG C | ﹥ 100 |
6) process flow：
I) face Xian Dao is detected, and is then carried out the face Yuan Dao surface and is cleaned, determines the width in face and the length to be constructed；
II) according to I) area that calculates of the width in the face Zhong Dao and the length gauge to be constructed, to determine spread width and spread
Amount；
III) construction protective emblem line on the road spread Hou face；
IV) pitch regeneration sealing construction：The maintaining runway agent being prepared for is placed in full-automatic pitch sprinkling car, to road face
Carry out spread construction；Rubbing for the road Zai Dui face is controlled coefficient and is detected after construction, then carries out closing health again, finally opens
It uses；
V) detection is checked and accepted：Asphalt pavement regeneration sealing delivery receiving acceptance detection content mainly include：The inspection of road sweat coefficient
It surveys, road surface construction depth detection and road face coefficient of friction detect.
Novel road face sealing sealing and traditional mist sealing Contrast on effect of the invention：
(1) as shown in Figure 1, Figure 2 as can be seen that the road surface contrast effect between not conserving and after maintenance compares.
(2) comparison such as following table between the detection data of road face：
(3) the road surface effect after conserving is better than the face Yuan Dao effect, is able to extend the service life in face.
The above description is only a preferred embodiment of the present invention, thus it is all according to the configuration described in the scope of the patent application of the present invention,
The equivalent change or modification that feature and principle are done, is included in the scope of the patent application of the present invention.
Claims (3)
1. a kind of airport asphalt concrete pavement preventive maintenance method, it is characterised in that：Using following steps:
Step 1:Crack treatment, using following steps：
1) preparation stage before constructing：
I) according to the conversion area and depth in crack, prepare emulsified asphalt satisfactory enough or pitch and filler material；II) so
Performance checking is carried out to pouring machine afterwards, it is ensured that its bitumen pipeline, pitch spray gun are unimpeded, and high-pressure hot air blows roasting device pressure foot
Enough, temperature is suitable；
2) it slots the stage：
I) the tiny irregular cracks for slit width within 5mm can generally expand seam due to being difficult to directly pour into pointing
Width is to deep 40mm, wide 12mm；II) with sweep seam machine to extension it is new seam and original wider old seam clean, scan out come
Sundries will be removed in time, in order to which gap-grouting material and the face Yuan Dao bond；
3) cleaning in crack and drying stage：
I roasting spray gun is blown with high-pressure hot air after) slotting, the compressed air after heating is blowed to crack, clear out the rubble and powder in seam
The sundries such as end；II) the road plane materiel material heating of fracture two sides simultaneously, thus the temperature difference for reducing gap-grouting material and being poured；
4) cementation of fissures sessions：
I) start pouring machine, gap-grouting material is heated, when gap-grouting material temperature reaches operating temperature, carry out cementation of fissures operation；II)
It, should be immediately using absorbing material the problems such as in order to protect not solidified gap-grouting material, prevent wheelprint after cementation of fissures operation
Material, so that they adhere to pointing surface, as temporary covering；
5) cementation of fissures quality testing stage：
I) whether the inspection cementation of fissures is linearly smooth, appearance neat and tidy, and sealing material is substantially concordant with road face；II) check that the cementation of fissures is
No sufficiently full, surfacing, grainless micelle or the knot that becomes silted up, drag mark is without extra gap-grouting material；III) do not occur after rolling
Fall off deformation, keeps sufficiently resilient；
Step 2：Pit slot processing, using following steps：
1) preparation of construction：I) probe pit slot type and degree of disease determine Disease Processing range and depth；II) according to original
Road noodles type prepares sticking layer oil material and asphalt；III traffic closing) is carried out to disease section, allocates and transports construction equipment, is protected
Each equipment of card construction runs well；
2) digging range delimited：According to " circular hole side is mended, and oblique hole is just mended " principle, pit slot maintenance surface delimited；Maintenance surface is rectangular, and four
The face Zhou Tongdao graticule is parallel or vertical, and range will be in actual pit trough rim；
3) pit slot is excavated：I the bituminous concrete of damage) is cut；II it) is cut using Hydraulic pick or grooving machine along the maintenance range delimited
Seam, it is desirable that joint-cutting is vertical, and the bituminous concrete in maintenance range is dug pine with equipment such as Hydraulic picks, and waste material is walked clearly；It excavates
When excavated from centre to four sides, in order to avoid damage trimming, it is desirable that excavate arrive intact, stable bottom surface；III) when processing depth is too deep
When needing layered rolling, each layer cuts face and to form step, and step width is not less than 10cm；
4) pit slot is cleared up：I) to after excavation pit slot bottom and surrounding handle, ravelled spot occur will cut completely, split
Seam will do the processing of cementation of fissures joint seal, and be removed the loose pellet of pit slot bottom, four walls completely with wire brush；II it) is blown with hair dryer
The sundries such as the floating ash in ponding, watermark and repairing range in dry pit slot；
5) spread sticking layer oil：Spread sticking layer oil is wanted on pit slot bottom surface and four walls, improves the bonding of new-old concrete；Sticking layer oil should be spilt
Cloth uniformly, without leakage is spilt, without trickling；
6) rolled asphalt mixture is backfilled:
I hot-mix asphalt mixture) is inserted into pit slot and is rolled, when layering is repaired, placement in layers, layered rolling；II) backfill drip
When green mixture, be bulldozed plate push away it is even, leveling, to control number, prevent number excessively cause fines product in bottom surface, coarse fodder stay in
Surface leads to mixture segregation；It when III) rolling, is compacted with small-size vibratory roller or plate compactor, first rolls pit slot four
Side again successively to centre promote, guarantee road face entirety flatness and new and old road face seam it is smooth, can simultaneously for seam crossing
Suitably to increase rolling layer, compactness is improved, prevents in the future that seam is loose, infiltration；
7) joint seal waterproof：It is uniformly applied in the new old asphalt concrete seam of repairing face surrounding with pitch class binder；
Step 3：Asphalt pavement regeneration sealing, using following steps：
1) equipment prepares：Strength brusher, full-automatic pitch sprinkling car；
2) preparation of maintaining runway agent：It is made of high performance modified bitumen, water, modifying agent, film forming agent and additive；By quality hundred
Divide the proportion of ratio as follows：High performance modified bitumen 60-80%, water 20-45%, modifying agent 10-35%, film forming agent 10-35% and
Additive 2-15%；
Wherein：
I) high performance modified bitumen：For split fastly type cation type emulsified asphalt；
II) water：Insoluble impurities must not be contained in water without harmful solubility salt for clean and drinkable water, pH value needs to control
System is in 6-8, and temperature is between 10-26.7 DEG C；
III) modifying agent：SBR latex；
IV) film forming agent：For alcohols；
V) additive：For regenerative agent, slow setting or coagulant, storage stabilizing agent or tackifier.
3) process flow：
I) face Xian Dao is detected, and is then cleaned using strength brusher to the face Yuan Dao surface, is determined the width in face and to be constructed
Length；II) according to I) area that calculates of the width in the face Zhong Dao and the length gauge to be constructed, to determine spread width and spread quantity；
III) construction protective emblem line on the road spread Hou face；IV) pitch regeneration sealing construction：The maintaining runway agent being prepared for is placed in
In full-automatic pitch sprinkling car, spread construction is carried out to road face；Rubbing for the road Zai Dui face is controlled coefficient and is detected after construction, so
Carry out closing health again afterwards, it is finally open to use；V) detection is checked and accepted：The content master of asphalt pavement regeneration sealing delivery receiving acceptance detection
Including：The detection of road sweat coefficient, road surface construction depth detection and the detection of road face coefficient of friction.
2. a kind of airport asphalt concrete pavement preventive maintenance method according to claim 1, it is characterised in that：Pitch
Class binder is bitumen regenerant, rapid-setting emulsified asphalt.
3. a kind of airport asphalt concrete pavement preventive maintenance method according to claim 1, it is characterised in that：Spread
Sticking layer oil is asphalt adhesive, emulsified asphalt or the foamed asphalt of heat.
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| CN109868699A (en) * | 2019-03-29 | 2019-06-11 | 重庆建工住宅建设有限公司 | Road noise reduction antiskid process of surface treatment |
| CN110183146A (en) * | 2019-04-25 | 2019-08-30 | 沈阳三鑫集团盘锦路用材料有限公司 | A kind of bituminous pavement cold patch material and its application method |
| CN110241700A (en) * | 2019-05-27 | 2019-09-17 | 内蒙古路桥工程技术检测有限责任公司 | Repair technology after pit slot detection |
| CN110965423A (en) * | 2019-12-17 | 2020-04-07 | 中交路桥华北工程有限公司 | Anti-crack construction method for asphalt pavement splicing |
| CN111519491A (en) * | 2020-04-26 | 2020-08-11 | 山东省高速路桥养护有限公司 | Construction method of sand-containing fog seal in highway maintenance |
| CN111877112A (en) * | 2020-07-25 | 2020-11-03 | 杭州大江东城市设施管养有限公司 | Road crack repairing method and road crack repairing machine |
| CN112523028A (en) * | 2019-09-17 | 2021-03-19 | 浙江长兴市政建设有限公司 | Waterproof edge sealing construction method for joint of pit and groove of asphalt pavement |
| CN112625512A (en) * | 2020-12-07 | 2021-04-09 | 杭州联体消修化工有限公司 | Asphalt pavement sealing compact reduction curing agent and construction process thereof |
| CN113005925A (en) * | 2021-03-30 | 2021-06-22 | 何怡 | Method for repairing crack of concrete bridge deck of bridge |
| CN113389124A (en) * | 2021-08-03 | 2021-09-14 | 上海市城市建设设计研究总院（集团）有限公司 | Disease treatment method for crack and damage of embedded integral track bed rail-side asphalt pavement |
| CN114508028A (en) * | 2022-03-01 | 2022-05-17 | 安徽重标建筑工程有限公司 | Construction method for modifying cement pavement with asphalt concrete |
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| CN109868699A (en) * | 2019-03-29 | 2019-06-11 | 重庆建工住宅建设有限公司 | Road noise reduction antiskid process of surface treatment |
| CN110183146A (en) * | 2019-04-25 | 2019-08-30 | 沈阳三鑫集团盘锦路用材料有限公司 | A kind of bituminous pavement cold patch material and its application method |
| CN110241700A (en) * | 2019-05-27 | 2019-09-17 | 内蒙古路桥工程技术检测有限责任公司 | Repair technology after pit slot detection |
| CN112523028A (en) * | 2019-09-17 | 2021-03-19 | 浙江长兴市政建设有限公司 | Waterproof edge sealing construction method for joint of pit and groove of asphalt pavement |
| CN110965423A (en) * | 2019-12-17 | 2020-04-07 | 中交路桥华北工程有限公司 | Anti-crack construction method for asphalt pavement splicing |
| CN111519491A (en) * | 2020-04-26 | 2020-08-11 | 山东省高速路桥养护有限公司 | Construction method of sand-containing fog seal in highway maintenance |
| CN111877112A (en) * | 2020-07-25 | 2020-11-03 | 杭州大江东城市设施管养有限公司 | Road crack repairing method and road crack repairing machine |
| CN111877112B (en) * | 2020-07-25 | 2022-04-05 | 杭州大江东城市设施管养有限公司 | Road crack repairing method and road crack repairing machine |
| CN112625512A (en) * | 2020-12-07 | 2021-04-09 | 杭州联体消修化工有限公司 | Asphalt pavement sealing compact reduction curing agent and construction process thereof |
| CN113005925A (en) * | 2021-03-30 | 2021-06-22 | 何怡 | Method for repairing crack of concrete bridge deck of bridge |
| CN113389124A (en) * | 2021-08-03 | 2021-09-14 | 上海市城市建设设计研究总院（集团）有限公司 | Disease treatment method for crack and damage of embedded integral track bed rail-side asphalt pavement |
| CN114508028A (en) * | 2022-03-01 | 2022-05-17 | 安徽重标建筑工程有限公司 | Construction method for modifying cement pavement with asphalt concrete |
| CN114508028B (en) * | 2022-03-01 | 2023-10-03 | 安徽重标建筑工程有限公司 | Construction method for modifying cement pavement by asphalt concrete |
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Address after: 226600 No.20, Nanhai Avenue East, Haian Development Zone, Nantong City, Jiangsu Province Applicant after: Jiangsu Zengguang New Material Technology Co., Ltd Address before: 226600 No.20, Nanhai Avenue East, Haian Development Zone, Nantong City, Jiangsu Province Applicant before: JIANGSU ZENGGUANG COMPOSITE TECHNOLOGY Co.,Ltd. |
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Application publication date: 20181130 |