CN103541290A - Construction process of interlaced complex fiber modified asphalt concrete surface layer - Google Patents
Construction process of interlaced complex fiber modified asphalt concrete surface layer Download PDFInfo
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- CN103541290A CN103541290A CN201310487484.2A CN201310487484A CN103541290A CN 103541290 A CN103541290 A CN 103541290A CN 201310487484 A CN201310487484 A CN 201310487484A CN 103541290 A CN103541290 A CN 103541290A
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Abstract
The invention discloses a construction process of an interlaced complex fiber modified asphalt concrete surface layer. The construction method specifically comprises the following steps: mixing an interlaced modified asphalt mixture; transporting the interlaced modified asphalt mixture; paving the interlaced modified asphalt mixture; grinding the interlaced modified asphalt mixture; carrying out joint treatment; maintaining and carrying out traffic control. According to the construction process disclosed by the invention, the asphalt concrete surface layer has high temperature stability, low-temperature crack resistance as well as water stability, fatigue resistance, and the like.
Description
Technical field
The present invention relates to highway construction field, be specifically related to a kind of interweaving composite fibre modified asphalt concrete surface construction method.
Background technology
The highway network's development that ，Yi Gao highway is served as theme is in recent years swift and violent, flexible pavement with its surfacing, without seam, drive a vehicle comfortable, noise is low, the construction period is short and the good characteristic such as easy to maintenance, in highway in China, be used widely.But along with national economy high speed development, traffic volume sharp increase and ever-increasing vehicular load, the functional performance of asphalt pavement of highway has been proposed to more and more higher requirement, newly-built flexible pavement operation just occurs soon passing, gather around bag, cheats groove, rut, crack, bellding, the disease such as loose, cause huge economic loss, to driving, left hidden danger.
Pitch is as a kind of viscoelastic material, its relative molecular weight is lower and distribution is wider, sensitiveness to temperature is stronger, during high temperature, deliquescing is clamminess, during low temperature, become fragile and easily split, and fatigue performance is poor, this has restricted the development of pitch and compound thereof to a certain extent, although constantly exploring new production technology, pitch manufacturer improves asphalt performance, road design department also adopts high-quality heavy duty road asphalt, but effect is undesirable, therefore pitch is carried out to modification just becomes a kind of effective method.Asphalt modification refers to that material is added in one or more modifications of admixture in matrix pitch or matrix pitch compound, by suitable processing technology, make material modified melting, be dispersed in matrix pitch or matrix pitch compound, form modified asphalt mixture, thereby improve or improve the pavement performance of bituminous mixture.Most asphalt modifier respectively has advantages and disadvantages part: adopt organic modifiers, Production Process of Modified Bitumen more complicated, needs dedicated modified equipment, has increased cost; Adopt inorganic modified dose, advantage is that construction technology is simple, but be easily subject to regional restriction, can not take into account and improve high-temperature behavior and crack resistance at low-temperature, some addition material improve plain asphalt compound single aspect performance have can bring certain negative effect to other performances simultaneously.
Given this, be the comprehensive problems such as high-temperature stability, low-temperature cracking-resistance and water stability that asphalt concrete pavement exists, fatigue resistance, the asphalt concrete pavement construction technique that need to invent a kind of high comprehensive performance of solving.
Summary of the invention
Technical problem to be solved by this invention is to provide a kind of interweaving composite fibre modified asphalt concrete surface construction technique, and it can solve the problems such as high-temperature stability, low-temperature cracking-resistance and water stability that asphalt concrete pavement exists, fatigue resistance.
In order to solve the problems of the technologies described above, the technical solution adopted in the present invention is as follows:
A composite fibre modified asphalt concrete surface construction technique, it specifically comprises the following steps:
1, a composite fibre modified asphalt concrete surface construction technique, is characterized in that specifically comprising the following steps:
Step 1: interweaving modified asphalt mixture mix
Take that ore gathers materials, breeze, interweaving composite fibre and matrix pitch, described in the adding method of interweaving composite fibre adopt " dry method " technique;
Step 2: interweaving modified asphalt mixture transportation
Utilize haulage vehicle to transport interweaving modified asphalt mixture, described haulage vehicle is provided with insulation layer and waterproofing course;
Step 3: interweaving modified asphalt mixture paves
Utilize paver to carry out continuously, at the uniform velocity pave;
Step 4: interweaving modified asphalt mixture rolls
Roll by first pressing, multiple pressure, three stages of final pressure and undertaken, first pressing adopts 12 tons of dual-steel wheel road roller static pressure, and multiple pressure adopts four 12 tons of dual-steel wheel road rollers to open to shake and rolls, and 12 tons of dual-steel wheel road roller static pressure of final pressure employing catch up with light to receive face;
Step 5: joint treatment
Longitudinal seam is distinguished to compacting with butting;
Step 6: health and traffic control
After layer to be paved is completely naturally cooling, mix surface temperature is during lower than 50 ℃, open to traffic.
As the present invention, further improve, the concrete blending method of step 1 is: ore is gathered materials and is added to 180-200 ℃, batch feeder adds interweaving composite fibre dry mixing 60-150s, interweaving composite fibre is uniformly dispersed in mineral aggregate, adding temperature is the matrix pitch of 150-170 ℃ again, and mix 60-150s, finally adds breeze, mix 60-150s, both.
As the present invention, further improve, be specially the mix for interweaving modified asphalt mixture, adopt " dry method " technique to add interweaving composite fibre, it is mainly additive input, duration of mixing and mix temperature that " dry method " process modification is controlled main points in mix;
The input of interweaving composite fibre, in asphalt mixture mixing building, hot Hatch Opening adopts batch feeder to add, automatic metering equipment is controlled, and according to the volume of interweaving composite fibre, is 0.3% of bituminous mixture gross mass, each to mixing the interweaving composite fibre of throwing in accurate weight in pot.After mixing building opening quotation, gathering materials, dry mixing starts, pitch does not also add, when wet-mixing does not start, load weighted interweaving composite fibre, from hot storehouse observation panel drops into mixing building, and should be dropped into complete and closes the door of hot storehouse observation panel before wet-mixing starts, interweaving of assurance composite fibre fully stirs, disperses, prevent that pitch and interweaving composite fibre from overflowing loss from hot storehouse observation panel, avoid interweaving composite fibre not stir and with pitch conglomeration, affect the uniformity of bituminous mixture.
As the present invention, further improve, described in interweaving composite fibre comprise that lignin fibre, polyester fiber and polymer compound additive form composite material and carry out comprehensively modifying.
As the present invention, further improve, before step 1, also comprise interweaving Proportion Design of Modified Asphalt Mixture: comprise the target mix design stage, select target mineral aggregate gradation, calculate various mineral mixture ratio, but feel best asphalt content immediately; The production mix proportion design stage; Production mix proportion checking.
As the present invention, further improve, before step 1, also comprise and prepare sub-layer and construction lofting, utilize pitch intelligent spreading car spray SBS modified bitumen adhesion coating and synchronously carry out aggregate chips spread, to carrying out interweaving of making composite fibre modified asphalt mixture upper layer after the adhesion coating passed examination that spread is good, the complete adhesion coating of making will clean totally in time.
As the present invention, further improve, described first pressing speed is 2-3Km/h, and the described speed of pressure is again 3-4.5Km/h, and described final pressure speed is 3-6Km/h.
Compared with prior art, the obtained beneficial effect of the present invention is:
Interweaving composite fibre provided by the present invention is comprised of three kinds of raw material, is respectively lignin fibre, polyester fiber and polymer compound additive, and these three kinds of extra materials respectively have feature for asphaltic concrete road by the effect of improving of performance.Lignin fibre has higher oil absorbency, can adsorb stable pitch, be spiked into and in bituminous mixture, played the stable effect of absorption, improve the durability of bituminous concrete, and the absorption stabilization of lignin fibre also can avoid the bituminous mixture mixing in transportation, to produce segregation, guarantees the uniformity of bituminous mixture.Polyester fiber has very large toughness, compared with high-tensile and fracture elongation, be spiked in bituminous mixture the effect of playing " reinforcing rib ", make that bituminous concrete produces at day and night temperature expand with heat and contract with cold and external impacts effect under, very large stretcher strain can be born, the crack resistance at low-temperature of bituminous concrete can be obviously improved.Polymer compound additive can improve the viscosity of pitch, thereby improves the high-temperature behavior of bituminous concrete, strengthens the ability of asphalt concrete pavement opposing high temperature rut.
These three kinds of lignin fibres, polyester fiber, polymer compound additive are mixed outward and material modifiedly for asphaltic concrete road, with performance improvement, are respectively had feature, these three kinds of raw material are carried out to compound mixing according to suitable proportion joins, make interweaving composite fibre, single outer mixing is material modifiedly extended in composite modification material by the effect of improving of performance for asphaltic concrete road, asphaltic concrete road played to the effect of comprehensive improvement by performance.
In the present invention, the ways added of interweaving composite fibre adopts " dry method " technique, the interweaving composite fibre of mixing is outward to adopt dry process to adopt batch feeder to be spiked in matrix pitch compound, do not need to carry out interweaving of mix preparation composite fibre modified bitumen with pitch in advance, interweaving composite fibre can long term storage when not using, and can as polymer modified asphalt, need to not consider the problem of storage stability.Before adding heated bitumen, interweaving composite fibre first carries out dry mixing with gathering materials, in dry mixing process, polyester fiber in interweaving composite fibre and lignin fibre can be gathered materials to be broken up, evenly spread to during thickness gathers materials, and polymer compound additive produces plastic strain under the coupling of stress field and thermal field, a part sticks to gathers materials above, a part of broken dispersion.After heated bitumen adds, pitch is stablized in the lignin fibre absorption being dispersed in gathering materials, the effect that the resistance of polyester fiber performance tackify is split, and can there is swelling in polymer compound additive particle, thereby change the aggregated structure composition of pitch, increased viscosity.Three kinds of raw material in interweaving composite fibre complement one another, and acting in conjunction improves the pavement performance of bituminous concrete jointly.
Bituminous mixture in the present invention is compared with conventional SBS modified asphalt mixture, adopt the domestic heavy traffic asphaltum of routine No. 70, do not adopt Imported Asphalt or import modified bitumen, obviously reduced cost of raw material expense, pitch per ton is saved 3500～4000 yuan of costs, this working skill adopts " dry mixing " method, can adopt batch feeder to add, do not need interweaving of asphalt mixing apparatus preparation in advance composite fibre modified bitumen, saved mixing machinery expense, for saving material resources and machinery resource, improve the pavement performance of asphalt concrete pavement simultaneously, reduce the early damage of flexible pavement, extend 3 to 5 years the application life of road, reduce maintenance Master Cost.
The prepared asphalt concrete pavement of the present invention is compared with traditional SBS modified asphalt concrete surface layer, has good construction convenience.Mixing building is when interweaving of mix preparation modified asphalt mixture, interweaving composite fibre adopts dry process to be spiked in matrix pitch compound as addition material, do not need to carry out interweaving of mix preparation modified bitumen with pitch in advance, and interweaving composite fibre can long term storage when not using, need not as polymer modified asphalt, need to consider the problem of storage stability.
The present invention has improved the traffic condition of compound.Because the lignin fibre in interweaving composite fibre has higher adsorptivity, can adsorb stable pitch, can avoid the bituminous mixture mixing in transportation, to produce segregation, can keep preferably the uniformity of hot-mix asphalt mixture.
The present invention improves the pavement performance of asphalt concrete pavement effectively.Polyester fiber in interweaving composite fibre can improve the anti-cold cracking property of asphalt concrete pavement effectively, polymer compound additive in interweaving composite fibre can significantly improve the high temperature resistance rut performance of asphalt concrete pavement, therefore, interweaving composite fibre can comprehensively improve the pavement performance of asphalt concrete pavement, reduce the generation of early disease, extend the application life on road surface.
The present invention saves construction cost.By interweaving of admixture composite fibre in matrix pitch compound, its pavement performance can reach the level of SBS modified asphalt mixture, but cost but will can reduce construction costs significantly lower than SBS modified asphalt mixture, and its economic results in society are remarkable.
Accompanying drawing explanation
Accompanying drawing 1 is the flow chart of construction technology of the present invention.
The specific embodiment
Below in conjunction with specific embodiment, the present invention is described in more detail.
Embodiment 1
As shown in Figure 1, a kind of interweaving composite fibre modified asphalt concrete surface construction technique, specifically comprises the following steps:
1, interweaving Proportion Design of Modified Asphalt Mixture
Interweaving Proportion Design of Modified Asphalt Mixture comprises target mix design stage, production mix proportion design stage and production mix proportion Qualify Phase.The volume of interweaving composite fibre is 0.3% of bituminous mixture gross mass.In mix-design process, the ways added of interweaving composite fibre adopts " dry method " technique, first will interweaving composite fibre and the dry mixing 90s that gathers materials, it is uniformly dispersed in mineral aggregate, and then adds matrix pitch, mix 90s, finally add breeze, mix 90s, total duration of mixing is 4.5min, in process of the test, the temperature of " dry method " technique is controlled as shown in table 1.By mix-design, determine mineral aggregate gradation and the asphalt content of interweaving modified asphalt mixture.
(1) the target mix design stage
1) select target mineral aggregate gradation
The mix type select target mineral aggregate gradation definite according to pavement design.
2) calculate the proportioning of various mineral aggregates
Rubble and mineral aggregate are carried out to sieve test, and measure the relative density of various mineral aggregates and the particle of various mineral aggregates composition, determine the proportioning of various mineral aggregates while reaching graduation curve requirement.
3) determine best asphalt content
Adopt Marshall method to determine the best asphalt content of interweaving modified asphalt mixture.The target asphalt content of tentatively drafting is intermediate value, interval with 0.5% changes up and down asphalt content and prepares marshal piece and be no less than 5 groups, in the test temperature of stipulating and test period, with Marshall Test instrument, measure its stability, flow valuve, density, and calculate its void content, pitch saturation ratio and void in mineral aggregate, according to result of the test and result of calculation, draw respectively the same density of asphalt content, stability, flow valuve, void content, the relation curve of pitch saturation ratio and void in mineral aggregate, according to Marshall method, according to relation curve, determine best asphalt content, if can not meet the requirements, should adjust grating, re-start mix-design and carry out Marshall Test, until indices all can meet the requirements.
(2) produce the mix-design stage
The ratio of the various mineral aggregates of determining according to Target Mixture Ratio, the material sampling that enters each hot aggregate bin from mixing machine regrading is sieved, determine the material proportion of each hot aggregate bin, make mineral aggregate formate gradation composition approach Target Mixture Ratio formate gradation composition curve, repeatedly adjust cold burden storehouse charge proportion simultaneously, to reach feed equilibrium, the asphalt content that the best asphalt content of determining according to Target Mixture Ratio again, the interval with 0.3% change up and down determines that three asphalt contents carry out Marshall Test, determine the best bitumen aggregate ratio of production mix proportion.
(3) production mix proportion checking
Adopt production mix proportion to carry out trial mix, and carry out Marshall Test check with the bituminous mixture of mix, determine thus the standard mix of production use.
2, prepare sub-layer and construction lofting
Before the construction of interweaving composite fibre modified asphalt mixture upper layer, utilize pitch intelligent spreading car spray SBS modified bitumen adhesion coating and synchronously carry out aggregate chips spread, to carrying out interweaving of making composite fibre modified asphalt mixture upper layer after the adhesion coating passed examination that spread is good, the complete adhesion coating of making will clean totally in time.
Before construction, emit two skirt piles positions of upper layer to control construction sideline with total powerstation, paving thickness is controlled automatically with floated equalizer bar computer, manually carries out with machine testing.
3, the mix of interweaving modified asphalt mixture
For the mix of interweaving modified asphalt mixture, adopt " dry method " technique to add interweaving composite fibre, the main points that " doing " method process modification is controlled in mix are mainly additive input, duration of mixing and mix temperature.
The input of interweaving composite fibre, in asphalt mixture mixing building, hot Hatch Opening adopts batch feeder to add, and before mixing building opening quotation, first by the quantity of every dish mix compound, accurately weighs the weight of interweaving of the actual admixture of every dish compound composite fibre.According to the volume of interweaving composite fibre, be 0.3% of bituminous mixture gross mass, each to mixing the interweaving composite fibre of throwing in accurate weight in pot.After mixing building opening quotation, gathering materials, dry mixing starts, pitch does not also add, when wet-mixing does not start, load weighted interweaving composite fibre, from hot storehouse observation panel drops into mixing building, and should be dropped into complete and closes the door of hot storehouse observation panel before wet-mixing starts, interweaving of assurance composite fibre fully stirs, disperses, prevent that pitch and interweaving composite fibre from overflowing loss from hot storehouse observation panel, avoid interweaving composite fibre not stir and with pitch conglomeration, affect the uniformity of bituminous mixture.
The mix of interweaving modified asphalt mixture should guarantee that the injection process of gathering materials with weighing storehouse heat that adds of interweaving composite fibre synchronizes, and guarantees the dispersed of additive and evenly mix with gathering materials, and dry mixing and wet-mixing time are generally all wanted proper extension.Structure and the pattern of batch (-type) device used are depended in the prolongation of mixing time, and the type and the quantity that are spiked into the interweaving composite fibre in compound.In the ordinary course of things, the dry mixing time is situation prolongation 5～15s than usual, and the wet-mixing time should be than plain asphalt compound required time proper extension 5～10s.Total mixing time (dry mixing and wet-mixing) of interweaving modified asphalt mixture should be no less than the concrete duration of mixing of 60s(and should be determined by trial mix), assurance asphalt mixture mixing is even, without grey material, the interweaving mixing composite fibre modified asphalt mixture.
It is the key technology main points of using " dry method " technique that temperature in mix process is controlled, and must be rigid in checking up, and the temperature in mix process is controlled as shown in table 2.
4, the transportation of interweaving modified asphalt mixture
Transportation and the common modified asphalt mixture of the bituminous mixture of interweaving of admixture composite fibre are basic identical.In composition raw material due to interweaving composite fibre, there is lignin fibre, and lignin fibre can adsorb stable pitch preferably, can avoid the bituminous mixture mixing in transportation, to produce segregation, the uniformity that can keep preferably hot-mix asphalt mixture, but because the viscosity of interweaving modified asphalt mixture is larger, should brush appropriate oil water mixture in the railway carriage bottom surface of haulage vehicle, be used for preventing that compound and railway carriage bottom surface from producing bonding.Haulage vehicle also must possess the overburdens such as cotton-wadded quilt or Tarpaulins, in the transportation of bituminous mixture, can be used for it fully to cover, with prevent impact that pitch is subject to sunlight, air when the high temperature produce oxidation and bituminous mixture produce demixing temperature/.In addition, also should pay special attention to being connected of paver and dumper, in paving process, avoid occurring the situation of fracture, to guarantee paver even operation.The bituminous mixture of transporting to job site also will detect its temperature and whether meet related request.
5, interweaving modified asphalt mixture paves
(1), while starting to pave, the dumper that will there be a some in paver the place ahead paves continuously guaranteeing, by special messenger, commands dumper slowly to move backward, and makes automobile back wheel lean against gently hopper of paver limit portion, must not clash into paver, as shown in Fig. 5 .2.5-1.Dumper should be hung neutral gear in paver discharge process, advances, to guarantee the planeness of paving layer by the powered of paver.Whether the loose laying depth that should at once detect compound after spreader starting meets the demands, and qualified continuation paves, otherwise will adjust, and reaches as early as possible designing requirement.
(2) adopt the operation of 2 paver echelons to carry out full width and pave, the spacing 2～4m of being separated by before and after two pavers, as shown in Fig. 5 .2.5-2.Before paving, paver screed heating-up temperature should be more than 100 ℃.While paving, the speed speed of travel of paving is controlled at 2～3m/min, will keep the speed of paving constant in paving process, and slowly, evenly, pave uninterruptedly, random conversion rate or stop over, to improve planeness and to reduce the segregation of compound.
(3) while paving, adopt self-propelled machinery to vibrate, amplitude adopts large amplitude.For fear of paver, shut down and wait to expect, at least will there be 1～2 truck in paver the place ahead, also should lay in 1/3 compound in hopper, produces segregation phenomenon while avoiding paving.
(4) when curve section paves, make paver at the uniform velocity advance, centre can not be shut down, and adjusts in time the direction of travel of paver, guarantees the spreading quality in curve section, and carries out at any time temperature detection and roll temperature to control.
(5) for the processing in special location.Road narrows, widened section and small-scale engineering can be used Manual, while paving, will detain shovel paves, must not raise shovel and get rid of material, while paving, strike off, and firmly consistent, come and go and scrape 2～3 times, avoid the generation of segregation phenomenon, the instruments such as spade that spreading is used will heat use, while paving, will carry out continuously, must not stop over, the bituminous mixture paving is critical with rolling.
(6) in whole paving process, control the temperature that paves well, because the viscosity of bituminous mixture after interweaving of admixture composite fibre is higher, therefore also higher to the requirement of the temperature that paves, the temperature that paves should not be lower than 160 ℃.
In the paving operation process of bituminous mixture, should control emphatically paving width, planeness, the temperature while paving and with dumper between coordinate, avoid to greatest extent the defects such as rips, segregation, cut and planeness be overproof, to improve the quality of pavement spread.
6, interweaving modified asphalt mixture rolls
The planeness that flexible pavement is last and compactness be all by road roller roll realize, due to admixture in bituminous mixture interweaving composite fibre, the quality rolling directly affects the quality of flexible pavement, and therefore, compaction technology plays decisive role to planeness and compactness.Roll by first pressing, multiple pressure, three stages of final pressure and undertaken.
(1) first pressing
Adopt 12 tons of dual-steel wheel road roller static pressure one time, under higher temperature, carry out, as shown in Fig. 5 .2.6-1.When rolling, driving wheel is towards paver, and road roller is by center, lateral, locate to roll from low to high, and adjacent rolling is with overlapping 1/3～1/2 to take turns widely, rolls and is with into steppedly, and the adjacent 20～30cm that staggers is long, and the whole face of paving of compacting is one time.The speed of travel of road roller should be controlled in 2～3km/h.
After first pressing, should check in time planeness and road camber, be revised if desired, as occurred when rolling, pile up, can after artificial treatment, go and roll again, if there is band, check reason and take corrective action in time.
(2) multiple pressure
Multiple compression after first pressing carried out, and adopts four 12 tons of dual-steel wheel road rollers to open to shake and rolls 4～5 times, as shown in Fig. 5 .2.6-2.During vibratory roller reversing, should stop by first failure of oscillation, in order to avoid form bulge, the road roller speed of travel should be controlled at 3～4.5km/h again.
(3) final pressure
Final pressure, immediately following carrying out after multiple pressure, adopts 12 tons of dual-steel wheel road roller static pressure to catch up with light to receive face.Utilize vibratory roller static pressure, make road surface without wheelmark, the speed of travel should be controlled at 3～6km/h.
In the process of rolling, because the viscosity of bituminous mixture after interweaving of admixture composite fibre is higher, so must closelying follow paver, road roller roll, to guarantee that compound completes compacting under higher temperature, guarantees compaction quality.During first pressing, rolling temperature should not be lower than 150 ℃, and final pressure temperature should not, lower than 125 ℃, roll finishing temperature and should be not less than 115 ℃.After compacting completes, should just can open to traffic when pavement temperature drops to below 50 ℃.
In addition, in the process of rolling, to guarantee that roller is moistening, in order to avoid adhere to bituminous mixture, adopt vaporific spraying, prevent that water supply volume is excessive, in order to avoid make mix surface cooling.Road roller must not turn to, reverse end for end, move left and right or brake suddenly on the road surface of new paving, on not yet cooling mixture surface course, must not park all construction equipments, in order to avoid produce distortion, also the foreign material such as mineral aggregate, oil plant that must not be scattered, could open to traffic after the complete asphalt surface course of compacting is completely cooling.
7, joint treatment
(1) compacting of longitudinal seam
The formation of longitudinal seam is relevant with Paving Techniques, and the formational situation of longitudinal seam is different, and the rolling method of employing is also different.
1) two above pavers are trapezoidal team and carry out full width while paving, and because the bituminous mixture temperature of the adjacent band that paves is close, roll rear longitudinal seam place without obvious boundary, and it is better that this kind of longitudinal seam rolls rear effect.Before and after adopting two pavers, keep the distance of 5～10 meters of left and right to pave continuously, the paver paving thickness that moves ahead is the backstage paver datum that paves, and rolls and adopts whole unified rolling.
2) adopt a paver to pave, and then return to the adjacent lane that paves.This kind of band that paves that paving operation method forms, its inner side is without lateral Displacement, bituminous mixture is easily under the extruding of rolling wheel, produce lateral sliding, now, road roller should, first from come and go each precompressed one time apart from inside edge 30～50cm along longitudinal seam line, then be reversed end for end to start first pressing to road kerb or the curb place in outside, sidesway 10～15cm of every compacting while rolling to 30～50cm scope, is depressed into inner side successively apart from till 5～10cm place, inside edge.After the adjacent band that paves is completed, then from the former inner side having rolled, till wrong rolling is pressed onto and crosses longitudinal seam line 50～80cm place successively.
This longitudinal seam rolling method, the adjacent band temperature difference that paves is unsuitable excessive, and the front and back time of paving can not be long, according to assurance and the control flexibly of its time interval of weather temperature condition.
(2) compacting of butting
After front job step paves and finishes, before rear job step paves, reply is butted and is carried out technical finesse.Front job step is carried out roughness measurement near the face of rolling butting after paving and finishing, and cutting machine is cut vertical lap seam, and planeness is not met to code requirement partly roots out.Before the construction of rear job step, adhesion coating pitch is spilt at vertical lap seam place, when 100 ℃ of screed heating-up temperatures are above, can continue to pave.Select dual-steel wheel road roller laterally to roll along butting direction, while starting to roll, the major part of rolling wheel should be pressed on the section of compacting, only stay that 15cm left and right wheels is wide to be pressed on the compound newly paving, then road roller rolls to the section sidesway that newly paves successively, each amount of side-shift is 15～20cm, until completely cross and butt.
8, health and traffic control
Interweaving composite fibre modified asphalt mixture road surface should be to be paved layer completely naturally cooling after, mix surface temperature, can open to traffic during lower than 50 ℃.After bituminous mixture roller-compaction, check by code requirement degree of compaction and the compacted depth of asphalt surface course.
9, material and equipment
(1) material
Pitch
While adopting No. 70 heavy traffic petroleum bitumen in interweaving modified asphalt mixture, technical performance need meet the requirement of table 3.
Gather materials and filler
The grading limit that is applicable to interweaving modified bitumen asphalt concrete material is shown in Table 4.
In interweaving modified asphalt mixture selected coarse aggregate should be dried, clean, without weathering, free from foreign meter, the rubble of the approximate square of particle shape, and should there is the character such as hard, wear-resisting, good toughness and rough surface.Fine aggregate should guarantee to be dried, clean, without weathering, free from admixture, without earth, and should there is suitable grain composition, there is good adhesiveness with pitch, technical performance need meet the requirement of table 5 and table 6.
In interweaving modified asphalt mixture, selected breeze requires cleaning, dry, can not contain the impurity such as earth, and should be able to freely from mineral powder bin, flow out, and technical performance need meet the requirement of table 7.
Interweaving composite fibre
Interweaving composite fibre is comprised of three kinds of raw material, is respectively lignin fibre, polyester fiber, polymer compound additive.
1, lignin fibre
Lignin fibre is a kind of natural organic polymer fiber, that natural timber is in being processed into the process of paper pulp and fiber pulp, through a series of physics and chemistry, process, the most remaining a part of cellulose is after activitiess such as washing, filter, spray, be dry is processed, stamp that wire drawing is refining and a kind of light green color of obtaining or the byssaceous inertia organic fiber of grey are spiked in bituminous mixture and can play the stable effect of absorption.
2, polyester fiber
Polyester fiber is that the polyester being formed by organic dibasic acid and dihydroxylic alcohols polycondensation is that raw material is through the prepared a kind of synthetic fibers of melt spinning.The polyester fiber of industrial mass production is to take PETG as primary raw material, add certain functional master batch, by melting, extrude, after at a high speed spray silk, high magnification stretch, again through special surface treatment process, utilizing special-purpose cutting off machine to cut off forms, its outward appearance is that plurality of fibers monofilament is handed over the poly-fascicular texture forming, and is spiked into the cryogenic property that can significantly improve asphalt concrete pavement in bituminous mixture.
3, polymer compound additive
Polymer compound additive is to using LLDPE and regenerated polythene as material of main part, and then add elastic body tackifier, solubilizer, antioxidant composition and antistripping component, after mixing, by double screw extruder, produce, be spiked into the high-temperature behavior that can significantly improve asphalt concrete pavement in bituminous mixture.
(2) equipment
4 of 4000 1 of type mixing station, ZL50 type loaders, 13 of the above dump trucks of 20T, 2 of ABG8820 pavers, 4 of double-steel wheeled vibratory rollers (12 tons), 2, sprinkling truck.
In the present invention, interweaving modified asphalt mixture surface construction quality is carried out < < standard specification for construction and acceptance of highway asphalt pavement > > (JTG F40-2004).Heat is mixed the construction temperature of interweaving modified asphalt mixture and is carried out according to table 8.
Mix should be under lock and key transporting on-the-spot interweaving composite fibre to before producing, and is placed in warehouse, canopy or with the covering of plastics canvas, avoids being soaked with rain, being polluted or affect the technical performance of interweaving composite fibre.
The interweaving modified asphalt mixture mixing should color and luster uniformity, without grey material, conglomeration, becomes piece and serious thickness material segregation phenomenon, and all mineral aggregate particles are advisable all to wrap asphalt binder.
The interweaving modified asphalt mixture mixing when transportation apply tarpaulin cover to be incubated, rainproof, anti-pollution, and the speed of paving of transport capacity and haul distance and paver that guarantees matches.
Dispatch from the factory temperature and the finished product compound of interweaving of surveying record modified asphalt mixture transported to the temperature of job site.
Answer compound that enchashment field paves to carry out sieve test after Marshall Test, bitumen aggregate ratio test and extracting, and position and pile No. and the bituminous mixture layer position of the good sampling of record.
The lowest temperature of the interweaving that pave modified asphalt mixture must not be lower than 10 ℃.
Check at any time compound the temperature that paves, roll temperature, roll finishing temperature.
Manage to reduce construction joint, note the construction quality of seam, make seam crossing surface layer tight, smooth, straight.
Heat mix interweaving modified asphalt mixture road surface should be to be paved layer completely naturally cooling after, mix surface temperature, can open to traffic during lower than 50 ℃.
After interweaving modified asphalt mixture roller-compaction, press degree of compaction and compacted depth that code requirement checks asphalt surface course.
Concrete application example
It is in Hebei province's freeway net allocation plan " five vertical, six horizontal strokes, seven lines " " article one line " that Qin's speedway is held in Hebei province, is also the important component part of Qinhuangdao and Chengde administrative region of a city railway network planning.This project implementation is for improving country and Hebei province's freeway net layout structure, get through the hinterland such as northern Hebei and the central and east, Inner Mongol channel to sea easily, drive the economic development of Qinhuangdao, Chengde area, build the integrated tourism of Jing,Cheng, Qin Golden Triangle and there is important function, to actively constructing the interactive general layout of " east goes out west connection ", Accelerating The Construction coastal economy rumble strip, promotes to realize the strong ambitious goal of economizing of coastal economy social development significant.
Hold 196 kilometers of Qin's speedway route total lengths, 15,000,000,000 yuan of gross investments, wherein Chengde section route total length is 91.972 kilometers, hold Qin's high speed Chengde section and arise from Chengde south intercommunication, hold with capital, hold towards speedway and be connected, through upper plate city, ,Jia mountain, Chengde County, yellow hedge, imperial Xu Men, Dong, precipice, Kuan Cheng county town door, plate city, arrive ridge, segment endpoint mausoleum, Chengde and enter Qinhuangdao along shortcut ditch domestic.Starting point, to 22.267 kilometers of Chengde County intercommunication segment lengths, adopts the construction of two-way six-lane standard, and roadbed is wide 33.5 meters; Chengde County intercommunication to Chengde segment endpoint adopts the construction of two-way Four-Lane Road standard, and roadbed is wide 24.5 meters.
This technique is relied on and is held Qin's high speed Chengde road section surface four contract section, and starting point pile No. is K72+100, and terminal pile No. is K93+398, totally 21.298 kilometers of main line total lengths.Adopt totally-enclosed, Four-Lane Road speedway standard, designed driving speed is 100Km/h, the wide 24.5m of main line integral subgrade, the wide 12.25m of separated subgrade.Main line, intercommunication ring road upper layer adopt the thick particulate formula of 4cm SBS modified asphalt concrete AC-13C, middle surface layer adopts the thick particulate formula of 6cm SBS modified asphalt concrete AC-20C, lower surface layer adopts the thick dense bitumen stabilization gravel of 12cm ATB-30, basic unit adopts 17cm solid cement stabilization gravel, and subbase adopts 16cm solid cement stabilization gravel.Wherein, in starting point pile No., be K79+750, terminal pile No. is that the section of K80+250 adopts thick the interweaving modified asphalt concrete of 4cm AC-13C according to this engineering method to upper layer, middle surface layer adopts the thick SBS modified asphalt concrete of 6cm AC-20C, and lower surface layer adopts the thick dense bitumen stabilization gravel of 12cm ATB-30.According to this engineering method, construct, not only saved construction cost, and the indices such as degree of compaction, planeness all meets designing requirement, by late detection, find that interweaving composite fibre has reduced the early damage of flexible pavement effectively, in the application life that has extended road, economical, societal benefits are remarkable.
The upper layer of various standard highway asphalt concrete pavements provided by the present invention, deck paving and tunnel pavement.
The above embodiment is only the preferred embodiments of the present invention, and is not the exhaustive of the feasible enforcement of the present invention.For persons skilled in the art, any apparent change of under the prerequisite that does not deviate from the principle of the invention and spirit, it having been done, within all should being contemplated as falling with claim protection domain of the present invention.
Claims (7)
1. interweaving a composite fibre modified asphalt concrete surface construction technique, is characterized in that specifically comprising the following steps:
Step 1: interweaving modified asphalt mixture mix
Take that ore gathers materials, breeze, interweaving composite fibre and matrix pitch, described in the adding method of interweaving composite fibre adopt " dry method " technique;
Step 2: interweaving modified asphalt mixture transportation
Utilize haulage vehicle to transport interweaving modified asphalt mixture, described haulage vehicle is provided with insulation layer and waterproofing course;
Step 3: interweaving modified asphalt mixture paves
Utilize paver to carry out continuously, at the uniform velocity pave;
Step 4: interweaving modified asphalt mixture rolls
Roll by first pressing, multiple pressure, three stages of final pressure and undertaken, first pressing adopts 12 tons of dual-steel wheel road roller static pressure, and multiple pressure adopts four 12 tons of dual-steel wheel road rollers to open to shake and rolls, and 12 tons of dual-steel wheel road roller static pressure of final pressure employing catch up with light to receive face;
Step 5: joint treatment
Longitudinal seam is distinguished to compacting with butting;
Step 6: health and traffic control
After layer to be paved is completely naturally cooling, mix surface temperature is during lower than 50 ℃, open to traffic.
2. a kind of interweaving composite fibre modified asphalt concrete surface construction technique according to claim 1, it is characterized in that: the concrete blending method of step 1 is: ore is gathered materials and is added to 180-200 ℃, add interweaving composite fibre dry mixing 60-150s, interweaving composite fibre is uniformly dispersed in mineral aggregate, adding temperature is the matrix pitch of 150-170 ℃ again, and mix 60-150s, finally adds breeze, mix 60-150s, both.
3. a kind of interweaving composite fibre modified asphalt concrete surface construction technique according to claim 2, it is characterized in that: be specially the mix for interweaving modified asphalt mixture, adopt " dry method " technique to add interweaving composite fibre, it is mainly additive input, duration of mixing and mix temperature that " dry method " process modification is controlled main points in mix;
The input of interweaving composite fibre, in asphalt mixture mixing building, hot Hatch Opening adopts batch feeder to add, automatic metering equipment is controlled, and according to the volume of interweaving composite fibre, is 0.3% of bituminous mixture gross mass, each to mixing the interweaving composite fibre of throwing in accurate weight in pot.After mixing building opening quotation, gathering materials, dry mixing starts, pitch does not also add, when wet-mixing does not start, load weighted interweaving composite fibre, from hot storehouse observation panel drops into mixing building, and should be dropped into complete and closes the door of hot storehouse observation panel before wet-mixing starts, interweaving of assurance composite fibre fully stirs, disperses, prevent that pitch and interweaving composite fibre from overflowing loss from hot storehouse observation panel, avoid interweaving composite fibre not stir and with pitch conglomeration, affect the uniformity of bituminous mixture.
4. a kind of interweaving composite fibre modified asphalt concrete surface construction technique according to claim 1, described in it is characterized in that, interweaving composite fibre comprises that lignin fibre, polyester fiber and polymer compound additive form.
5. according to a kind of the interweaving composite fibre modified asphalt concrete surface construction technique described in claim 1-4 any one, it is characterized in that before step 1, also comprising interweaving Proportion Design of Modified Asphalt Mixture: comprise the target mix design stage, select target mineral aggregate gradation, calculate various mineral mixture ratio, best asphalt content; The production mix proportion design stage; Production mix proportion checking.
6. according to a kind of the interweaving composite fibre modified asphalt concrete surface construction technique described in claim 1-4 any one, it is characterized in that also comprising preparation sub-layer and construction lofting before step 1, utilize pitch intelligent spreading car spray SBS modified bitumen adhesion coating and synchronously carry out aggregate chips spread, to carrying out interweaving of making composite fibre modified asphalt mixture surface layer after the adhesion coating passed examination that spread is good, the complete adhesion coating of making will clean totally in time.
7. according to a kind of the interweaving composite fibre modified asphalt concrete surface construction technique described in claim 1-4 any one, it is characterized in that described first pressing speed is 2-3Km/h, the described speed of pressure is again 3-4.5Km/h, and described final pressure speed is 3-6Km/h.
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Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104762862A (en) * | 2015-01-30 | 2015-07-08 | 中冶交通（沈阳）建设工程有限公司 | Stone mastic asphalt (SMA) pavement construction method |
| CN106522073A (en) * | 2016-11-18 | 2017-03-22 | 苏州中恒通路桥股份有限公司 | Construction method of high-added water-stable milled waste base |
| CN107268371A (en) * | 2017-07-17 | 2017-10-20 | 中国三冶集团有限公司 | A kind of dankness type Cement Treated Material and its construction method |
| CN107382149A (en) * | 2017-07-24 | 2017-11-24 | 张莹莹 | A kind of construction of the highway bituminous concrete and preparation method thereof |
| CN107386037A (en) * | 2017-07-20 | 2017-11-24 | 天津市国腾公路咨询监理有限公司 | A kind of compaction technology based on asphalt compactingproperties |
| CN109574552A (en) * | 2019-01-28 | 2019-04-05 | 上海时申工贸有限公司 | A kind of high strength asphalt concrete and its preparation process |
| CN110106763A (en) * | 2019-05-14 | 2019-08-09 | 广州同欣康体设备有限公司 | The method for paving of prefabrication type movement surface layer |
| CN111893827A (en) * | 2020-08-05 | 2020-11-06 | 中交上海航道局有限公司 | Construction process of urban trunk road |
| CN112239981A (en) * | 2020-10-09 | 2021-01-19 | 周静 | Asphalt laying process for road construction |
| CN112557244A (en) * | 2020-11-21 | 2021-03-26 | 扬州大学 | Method for evaluating dispersion uniformity of basalt fibers in asphalt mixture |
| CN113944078A (en) * | 2021-09-16 | 2022-01-18 | 湖北鸿运万鑫建筑工程有限公司 | Road construction method for municipal engineering |
| CN115594445A (en) * | 2022-10-19 | 2023-01-13 | 中铁十八局集团有限公司（Cn） | Interweaved modified asphalt concrete |
| CN116444204A (en) * | 2023-04-20 | 2023-07-18 | 新疆北新岩土工程勘察设计有限公司 | Asphalt mixture and production and paving method application thereof |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1520932A2 (en) * | 2003-10-02 | 2005-04-06 | Siegmar Ullrich | Stabilising additive for asphalt comprising hemp or flax fibers |
| CN1908069A (en) * | 2005-08-01 | 2007-02-07 | 深圳市海川实业股份有限公司 | Mixture of special-shaped section hollow polymer fiber and modified asphalt |
-
2013
- 2013-10-18 CN CN201310487484.2A patent/CN103541290B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1520932A2 (en) * | 2003-10-02 | 2005-04-06 | Siegmar Ullrich | Stabilising additive for asphalt comprising hemp or flax fibers |
| CN1908069A (en) * | 2005-08-01 | 2007-02-07 | 深圳市海川实业股份有限公司 | Mixture of special-shaped section hollow polymer fiber and modified asphalt |
Non-Patent Citations (3)
| Title |
|---|
| 岳红波: "混杂纤维改性沥青混合料性能研究", 《武汉理工大学硕士学位论文》, 31 December 2008 (2008-12-31) * |
| 石伟: "改性沥青混凝土面层施工法", 《黑龙江交通科技》, no. 6, 30 June 2009 (2009-06-30), pages 105 * |
| 韩伟华: "复合改性纤维沥青混合料路用性能研究", 《长安大学硕士学位论文》, 31 December 2007 (2007-12-31) * |
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|---|---|---|---|---|
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| CN104762862B (en) * | 2015-01-30 | 2017-06-13 | 中冶交通（沈阳）建设工程有限公司 | SMA asphaltic road-mix surface course construction methods |
| CN106522073A (en) * | 2016-11-18 | 2017-03-22 | 苏州中恒通路桥股份有限公司 | Construction method of high-added water-stable milled waste base |
| CN107268371A (en) * | 2017-07-17 | 2017-10-20 | 中国三冶集团有限公司 | A kind of dankness type Cement Treated Material and its construction method |
| CN107386037A (en) * | 2017-07-20 | 2017-11-24 | 天津市国腾公路咨询监理有限公司 | A kind of compaction technology based on asphalt compactingproperties |
| CN107382149A (en) * | 2017-07-24 | 2017-11-24 | 张莹莹 | A kind of construction of the highway bituminous concrete and preparation method thereof |
| CN107382149B (en) * | 2017-07-24 | 2018-03-23 | 张莹莹 | A kind of construction of the highway bituminous concrete and preparation method thereof |
| CN109574552A (en) * | 2019-01-28 | 2019-04-05 | 上海时申工贸有限公司 | A kind of high strength asphalt concrete and its preparation process |
| CN110106763A (en) * | 2019-05-14 | 2019-08-09 | 广州同欣康体设备有限公司 | The method for paving of prefabrication type movement surface layer |
| CN111893827A (en) * | 2020-08-05 | 2020-11-06 | 中交上海航道局有限公司 | Construction process of urban trunk road |
| CN112239981A (en) * | 2020-10-09 | 2021-01-19 | 周静 | Asphalt laying process for road construction |
| CN112557244A (en) * | 2020-11-21 | 2021-03-26 | 扬州大学 | Method for evaluating dispersion uniformity of basalt fibers in asphalt mixture |
| CN112557244B (en) * | 2020-11-21 | 2023-10-27 | 扬州大学 | Method for evaluating dispersion uniformity of basalt fibers in asphalt mixture |
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Address after: 074000 No. 69 Shiji East Road, Gaobeidian City, Baoding, Hebei. Patentee after: Huitong Construction Group Co.,Ltd. Address before: 074099, No. 69 century East Road, Baoding, Hebei, Gaobeidian Patentee before: HUITONG ROAD AND BRIDGE CONSTRUCTION GROUP Co.,Ltd. |
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Application publication date: 20140129 Assignee: Hebei Ruiting Engineering Design Consulting Co.,Ltd. Assignor: Huitong Construction Group Co.,Ltd. Contract record no.: X2024990000221 Denomination of invention: A construction technology for interweaving composite fiber modified asphalt concrete surface layer Granted publication date: 20150610 License type: Common License Record date: 20240509 |