CN105541181B - A kind of rubber powder ground surface material and construction method - Google Patents
A kind of rubber powder ground surface material and construction method Download PDFInfo
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- CN105541181B CN105541181B CN201511006495.XA CN201511006495A CN105541181B CN 105541181 B CN105541181 B CN 105541181B CN 201511006495 A CN201511006495 A CN 201511006495A CN 105541181 B CN105541181 B CN 105541181B
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B26/00—Compositions of mortars, concrete or artificial stone, containing only organic binders, e.g. polymer or resin concrete
- C04B26/02—Macromolecular compounds
- C04B26/26—Bituminous materials, e.g. tar, pitch
-
- 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
- E01C7/00—Coherent pavings made in situ
- E01C7/08—Coherent pavings made in situ made of road-metal and binders
- E01C7/18—Coherent pavings made in situ made of road-metal and binders of road-metal and bituminous binders
- E01C7/187—Repairing bituminous covers, e.g. regeneration of the covering material in situ, application of a new bituminous topping
-
- 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
- E01C7/00—Coherent pavings made in situ
- E01C7/08—Coherent pavings made in situ made of road-metal and binders
- E01C7/18—Coherent pavings made in situ made of road-metal and binders of road-metal and bituminous binders
- E01C7/26—Coherent pavings made in situ made of road-metal and binders of road-metal and bituminous binders mixed with other materials, e.g. cement, rubber, leather, fibre
- E01C7/265—Coherent pavings made in situ made of road-metal and binders of road-metal and bituminous binders mixed with other materials, e.g. cement, rubber, leather, fibre with rubber or synthetic resin, e.g. with rubber aggregate, with synthetic resin binder
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2111/00—Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
- C04B2111/00474—Uses not provided for elsewhere in C04B2111/00
- C04B2111/0075—Uses not provided for elsewhere in C04B2111/00 for road construction
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- Chemical & Material Sciences (AREA)
- Structural Engineering (AREA)
- Ceramic Engineering (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- Road Paving Structures (AREA)
Abstract
A kind of rubber powder ground surface material and construction method, the broken all-steel load-bearing radial tire scrapped, attrition grinding becomes rubber powder；Rubber asphalt is prepared with rubber powder, stabilization aid, modifying agent and matrix pitch；Take rubber asphalt, mineral aggregate and breeze in proportion, prepare rubber powder ground surface material.Cleaning need to lay the sub-layer in section；Sub-layer uniformly spreads the rubber asphalt after paving heating；Metaling is heated to temperature and is not less than 80 DEG C, is spread on rubber asphalt layer；According to sub-layer temperature, within the time of regulation, complete 3 times roll, lay rubber powder ground surface material, paving thickness 3.5～5.5cm by the laying method of existing Rubber-Asphalt Pavement material；After rubber powder ground surface material different temperatures section rolls respectively, uniform spread sticking layer oil, complete the construction of highway pavement.This ground surface material is suitable for big temperature difference local highway and lays, and solves the highway crack problem in big temperature difference area, lays a good foundation for the rubber powder application in area under the big temperature difference.
Description
Technical field
The invention belongs to highway paving material technical field, relate to a kind of rubber powder ground surface material；The invention still further relates to one
Plant the construction method laying highway pavement with this ground surface material.
Background technology
The development of high-grade highway construction, the use quality of road pavement and function are had higher requirement.Practice have shown that,
Much more complicated than new highway bituminous paving of the technical problem that faced in old pavement transformation.Such as old pavement needs in overlaying
Note the Reflective Cracking Resistance of overlay, high-temperature behavior and the bond effect etc. good with old pavement.Many engineerings are due to this
A little issue handlings are improper, destroy rapidly, cause the huge waste of maintenance cost after causing maintenance, are even absorbed in a year annual overhaul, repeatedly
The predicament repaiied.For above technical problem, in addition to the structure design improving bituminous paving, use Load materials of good performance
Also it is an important aspect.Rubber asphalt, due to its excellent pavement performance and the Special Significance to environmental protection, is increasingly subject to
The attention of domestic project circle.
Arid climate district, Shu Zhong temperate zone, Hexi Region of Gansu, rainfall is few, evaporation capacity is big, length at sunshine, day and night temperature notable,
Winter-spring season is less obvious, and summer is hot and winter is cold, and the big sand of wind is many, and vegetation is rare, has typical continental desert gas
Waiting feature, temperature difference per day is bigger.Add up according to meteorological data, many average temperatures of the whole year 6.9 DEG C, Extreme Maximum Temperature 38.4 DEG C, extremely
The lowest temperature-31.6 DEG C.Mean annual precipitation 63.3～86.7 mm, belongs to northwest in highway weather Natural Division, the whole nation
Arid VIth district.By existing application of rubber asphalt when the highway pavement of this area, there is stripping of aggregate, ageing of asphalt etc. and ask
Topic, maximum disease is crack, and average headway is relatively big, is all lateral direction penetrating reflection crack, and it is left that fracture width is generally 2.5mm
Right.
Summary of the invention
It is an object of the invention to provide a kind of rubber powder ground surface material being applied to temperature difference per day larger area, it is possible to tolerance is relatively
Big temperature change, occurs crack the most easily.
Another object of the present invention is the construction method carrying out highway pavement laying with above-mentioned ground surface material.
For achieving the above object, the technical solution adopted in the present invention is: a kind of rubber powder ground surface material, by the following method
Prepare:
Step 1: take the all-steel load-bearing radial tire scrapped, broken under normal temperature, separate and be ground under iron and fiber, normal temperature
Particle diameter is the thick rubber powder of 1～3mm, is delivered under storage bin, normal temperature grind thick rubber powder, obtains particle diameter 40 after again removing iron and fiber
～120 rubber powders of mesh；
Step 2: by mass percentage, takes rubber powder 18～20%, stabilization aid 3～7%, modifying agent 0.5～1.5% and respectively
The matrix pitch of surplus；Matrix pitch is heated to 195 ± 2 DEG C, adds rubber powder and modifying agent, after high shear agitation 2～5min,
Add stabilization aid, at a temperature of 180～190 DEG C, stir 45～60min, obtain rubber asphalt；
Step 3: take rubber asphalt, mineral aggregate and breeze, rubber asphalt is 7.5～8.7% with the mass percent of mineral aggregate, ore deposit
Powder is 3～7% with the mass percent of mineral aggregate, and mineral aggregate is heated to 185～195 DEG C, adds the rubber drip that temperature is 180～190 DEG C
Green grass or young crops, stirs 95～115s, adds the breeze that temperature is 185～195 DEG C, stirs 95～115s, obtains rubber powder ground surface material；
Described mineral aggregate uses AR-AC13S type compound, AR-AC-13 type compound or ARHM-13W type compound.
Another technical scheme of the present invention is: a kind of with above-mentioned rubber powder ground surface material laying highway pavement
Construction method, specifically sequentially includes the following steps:
Step 1: to needing the sub-layer laying section to clean, drifting dust and cleaning；
Step 2: the rubber asphalt of temperature 180～190 DEG C is uniformly spread on paving sub-layer after the cleaning；
Step 3: the metaling of particle diameter 9.5～13.2mm is heated to temperature and is not less than 80 DEG C, is spread in uniform in rubber drip
In cyan layer；
Step 4: if sub-layer temperature is more than 40 DEG C, then completes 3 times in 20min and roll；If sub-layer temperature be 18～
40 DEG C, then complete 3 times to roll in 10min, if sub-layer temperature is less than 18 DEG C, then stop construction；
Step 5: lay rubber powder ground surface material, during laying, spiral by the laying method of existing Rubber-Asphalt Pavement material
In distributing device, the height of rubber powder ground surface material is the 1/2～2/3 of spiral distributor height；The temperature of rubber powder ground surface material is not
Less than 160 DEG C, coefficient of loose laying is 1.25, paving thickness 3.5～5.5cm；
Step 6: after laying rubber powder ground surface material, when its temperature is down to 157～164 DEG C, carries out rolling for the first time, rolls
Speed is 2.0km/h；When the rubber powder ground surface material temperature laid is down to 143～153 DEG C, carries out second time and roll, roll
Speed is 3.0km/h；When the rubber powder ground surface material temperature laid is down to 100～104 DEG C, carries out third time and roll, roll
Speed is 3.0km/h, obtains rubberized concrete road surface；Afterwards, mix at this rubber powder by existing Rubber-Asphalt Pavement construction method
Uniform spread sticking layer oil on solidifying soil surface, the spread quantity of sticking layer oil is 0.20～0.30kg/m2, form stress absorbing layer, complete
The construction of highway pavement.
Ground surface material of the present invention is the rubber asphalt cement being suitable under big temperature range utilizing rubber powder to prepare, application
Among road surface, solve the highway crack problem in big temperature difference area, lay good for the rubber powder application in area under the big temperature difference
Basis, be also simultaneously the excellent pavement performance of rubber asphalt and the concrete embodiment to environmental protection Special Significance.Big temperature range
The preparation of lower rubber powder ground surface material, not only solves " black pollution " problem of scrap rubber, further promote economize on resources with
Environmental protection, strengthens the recycling of material, advances the development of material new technology.Also strengthen China's rubber drip simultaneously
Blue or green progress of research, the pavement construction application for rubber asphalt has had certain actual reference, has promoted rubber asphalt
Further development in China.
Detailed description of the invention
Below in conjunction with detailed description of the invention, the present invention is described in detail.
The development of high-grade highway construction, the use quality of road pavement and function are had higher requirement.Seek further
Ask that performance is more superior, the modified asphalt material of cheaper, the pursuit that the person that is still road work is tireless.Carry out rubber asphalt
Application study, on the one hand can expand the space that material selects, prolonging service life of pavement, is the needs of road engineering development；
On the other hand be the needs recycling damaged tire, be the contribution to China environmental protection cause, be one benefit the nation and the people good
Thing.Especially day and night temperature is notable, winter-spring season is less obvious, winter is cold, the big sand of wind compared with big, sweltering heat in summer for temperature difference per day
Many, vegetation is rare, have the area of typical continental desert climate feature.Splitting easily occurs in currently used rubber asphalt material
Seam, has influence on the quality of highway pavement, there is huge potential safety hazard.In order to solve above-mentioned problems of the prior art,
The invention provides a kind of rubber powder ground surface material, it is possible to be applied to that day and night temperature is notable, temperature difference per day is bigger, and to have typical case big
The area of land property desert climate feature, it is not easy to crack occurs, it is ensured that Pavement Road Surface Quality, eliminate safe hidden trouble.This rubber powder
Ground surface material prepares by the following method: step 1: take the all-steel load-bearing radial tire scrapped, and under normal temperature, whole tire is broken into 50
After the fragment of × 50mm, it is cut into the blob of viscose of 10 × 10mm through twice stranding of rubber breaker, separates iron and fiber, send into fine crusher, normal temperature
Under be ground into the thick rubber powder that particle diameter is 1～3mm, be delivered under storage bin, normal temperature grind thick rubber powder after again removing iron and fiber,
Obtain the rubber powder of particle diameter 40～120 mesh；
In this rubber powder, the content of natural rubber components and the content of rubber hydrocarbon are 33% and 59% respectively.The heating of this rubber powder subtracts
Amount≤1.0%, iron content≤0.03%, fiber content≤0.1%, bulk density 260～460kg/m3, ash content≤8%, acetone extract out
Thing≤8%, rubber hydrocarbon content >=42%, content of carbon black >=26%.
All-steel load-bearing radial tire use load-carrying vehicle scrap 9.00R20 type high-capacity tyre, 10.00R20 type load-carrying
Tire, 11.00R20 type high-capacity tyre and 12.00 R20 type high-capacity tyres.
Step 2: by mass percentage, takes rubber powder 18～20%, stabilization aid 3～7%, modifying agent 0.5～1.5% and respectively
The matrix pitch of surplus；Matrix pitch is heated to 195 ± 2 DEG C, adds rubber powder and modifying agent, after high shear agitation 2～5min,
Add stabilization aid, at a temperature of 180～190 DEG C, stir 45～60min, obtain rubber asphalt；
180 DEG C of rotations viscosity 2.0～4.0Pa s, 25 DEG C of needle penetrations (0.1mm) 40～80, softening points of this rubber asphalt
＞ 58 DEG C, 25 DEG C of elastic recovery 55%, 5 DEG C of ductility ＞ 20cm of ＞.
Stabilization aid uses Catalytic Cracking Slurry Oil With Furfural tapped oil, vita-inosculation or polyphosphoric acids (PPA).
Modifying agent uses thermoplastic styrene butadiene rubber (SBS).
Step 2 use at a temperature of 180～190 DEG C blade stirrer be stirred.
Step 3: take rubber asphalt, mineral aggregate and breeze, rubber asphalt is 7.5～8.7% with the mass percent of mineral aggregate, ore deposit
Powder is 3～7% with the mass percent of mineral aggregate, and mineral aggregate is heated to 185～195 DEG C, adds the rubber that temperature is 180～190 DEG C
Pitch, stirs 95～115s, adds the breeze that temperature is 185～195 DEG C, stirs 95～115s, obtains rubber powder ground surface material.
Breeze is the ore that particle diameter is less than 6mm.
Mineral aggregate uses AR-AC13S type compound (" Anhui building " 01 phase in 2013 " wide ancestral temple highway AR-AC13S rubber
Glue Asphalt Pavement Construction Technique ", author: Wang Chengbin), AR-AC-13 type compound (Research Institute of Communication of Jiangsu Province " gap gradation
Rubber asphalt concrete AR-AC-13 construction guidbook ") or ARHM-13W type compound (" rubber asphalt and asphalt mixture design are executed
Work technical manual ", Int. of Highway Sciences, Ministry of Communications).
The voidage of rubber powder ground surface material prepared be 3.0～5.5%, stability be 9.45～11.03kN.The present invention
The rubber method combined with fine gtinding technique in small, broken bits is used to be sheared at high-speed damping by all-steel load-bearing radial tire and rub
(passive temperature liter melts to rise and refers to not have in production process external source to promote temperature for the condition of work wiped and " passive temperature liter melts and rises "
Degree, only shearing and friction by self heat up voluntarily) during the plastid of thick rubber powder open and prepare rubber powder.Meanwhile, each operation
Between by air-flow selection by winnowing carry material, air-flow conveying material during material is carried out effective temperature-reducing, make the temperature of material begin
Pulverize and fine gtinding under normal temperature state eventually, and the temperature of the equipment residing for material is 60～70 DEG C, to ensure that rubber powder is not
Too high and burn or its physical property of bond failure to temperature rise, the vulcanized rubber powder activity of preparation is high, and specific surface area is high, oxy radical
Content is high, has good compatibility with polymeric material, pitch and concrete, and uses relatively advanced plane formula finely to grind
Grinding machine and mill formula rubber breaker crash manner from linear velocity, speed than with compared with have the different of matter, the rubber powder quality produced
Stable.
Utilize high-speed shearing equipment to be dispersed in matrix pitch by rubber powder, make the two fully merge in initial reaction stage；Lead to again
Cross simple agitation and realize growing further and swelling of rubber asphalt, form qualified product, in order to make rubber powder particle abundant
Swelling, as the foundation selecting mixing time when viscosity should be selected to reach maximum and will occur to reduce.Therefore the present invention adopts
Using the stirring of composite stirring mode, i.e. high shear agitation and common blade type to share, mixing time takes about 50min.
The rising of reaction temperature is conducive to the reciprocation of rubber powder and pitch, but the aging phenomenon of pitch can be more significantly；
When temperature is too low, sluggish, reach to use the time required longer, fuel oil consumption is significantly increased, cost increase.Test table
Bright, the highest meeting of reaction temperature causes rubber grain excessive degradation, affects the viscosity of rubber asphalt；Reaction temperature is relatively low, then need
Longer mixing time, affects production efficiency, the impact of the two factor to be weighed in actual production.The rising of temperature is promoting
While rubber powder is swelling, accelerating the generation of rubber powder cracking reaction, rubber powder effective grain size constantly reduces, and stress concentration phenomenon subtracts
Few, ductility value increases；The increase of rubber powder cracking degree makes the little strand hop count being scattered in pitch the most, pitch pliable and tough
Property improved, ductility value increases, and is therefore incremental Long-term change trend along with the rising ductility of reaction temperature.From the property of rubber asphalt
Can set out, the reaction temperature that present invention determine that is 180～190 DEG C.
The particle diameter of rubber powder performance and reduction engineering cost to improving rubber asphalt is most important.Change when rubber powder granule is thicker
Property effect poor, rubber powder is swelling relatively difficult in pitch, and swelling rate is slow, swelling limitation, the net of rubber asphalt
Network structure is the most perfect, and asphalt viscosity is less；Although too thin the swelling of rubber powder of rubber powder becomes easy, degree of swelling increases, favorably
In the formation of rubber asphalt network structure, but the desulfurization cracking reaction of rubber powder also becomes more significantly simultaneously, effective grain of rubber powder
Footpath diminishes, unfavorable to rubber asphalt network structure, viscosity reduce, in addition rubber powder meticulous in pitch difficulties in dispersion and cost the highest
Unfavorable to economy, do not have good modified effect.Rubber powder ground surface material of the present invention uses the glue of particle diameter 40～120 mesh
Powder, rubber powder can form good skeleton structure in pitch, just can obtain higher viscosity through relatively short period of time, it is thus achieved that good
Good comprehensive serviceability.
Rubber powder in rubber powder ground surface material (particularly thick rubber powder) volume is too low, then distant, mutually between micelle
Between contact relatively become estranged, remote action is less, and now thickening pitch is the effect that it is main；Contrary rubber powder volume of working as is excessive,
Although the rubber powder quantity in unit volume significantly increases, distance between micelle reduces, and be conducive to improving between micelle is long-range
Active force, improves many character of pitch, but there is the excessive problem being difficult to produce of cementitious matter denseness, the most also easily cause mixed
Close oil mass during material mixes and stirs excessive, cause the decline of compound high temperature properties.Therefore, the change of rubber powder volume, not only want
Take into account the filling effect that rubber powder plays in pitch, it is also contemplated that the high temperature of rubber asphalt, low-temperature characteristics, rubber mill diagram of the present invention
In the material of face, the mass percent of rubber powder is 18～20%, and now rubber asphalt exists an optimal network structure, and rubber powder is in drip
Playing best filling effect in green grass or young crops, rubber asphalt is obtained in that good high-temperature behavior and cryogenic property.
Stabilization aid is equivalent to the soft component in pitch, and it and asphalitine not only increase the temperature sensitivity of system, with
Time improve the stability of system, make pitch deliquescing become soft, improve the storage stability of modified pitch；And cycle oil
In slurry, saturated point of the heavy constituent temperature sensitivity not only reducing system with asphalitine, exacerbates the instability of system simultaneously
Property, makes that pitch is hardening to become fragile.So the mass percent that in rubber powder ground surface material of the present invention, stabilization aid is taken be 3～
7%。
, rubber powder ground surface material of the present invention carried out high temperature and cold performance test:
High-temperature behavior uses wheel tracking test evaluation, experimental condition: at 60 ± 1 DEG C, carries out car under the conditions of 0.7 ± 0.05MPa
Rut is tested, and rut dynamic stability test result is as shown in table 1.
Table 1 wheel tracking test dynamic stability
Crack resistance at low-temperature experiment uses the small beam experiment, carries out compound cryogenic property evaluation, experimental condition: temperature-20
DEG C, speed 50mm/min, result of the test is as shown in table 2.
Table 2 girder bend test result
As can be seen from Table 1 and Table 2: the rut dynamic stability of rubber powder ground surface material of the present invention and low temperature damage compliance
Rut dynamic stability and the low temperature damage strain property of existing Rubber-Asphalt Pavement material can be substantially better than, rubber of the present invention is described
The high temperature resistant property of rubber powder ground surface material and resistance to low temperature are good, are suitable for the area under big temperature range.
, water stabilizing test
The water stability of rubber powder ground surface material of the present invention is checked by immersion Marshall test and indirect tensile test on frozen-thaw
Can, result of the test is shown in Table 3 and table 4.
Table 3 immersion Marshall test results contrast
Table 3 and table 4 show, the rubber powder ground surface material of the present invention Marshall's residual stability of immersion is 88.2%, more than existing
The residual stability of some Rubber-Asphalt Pavement materials；In freeze-thaw split experiment, the splitting of rubber powder ground surface material of the present invention is strong
Degree ratio is 85.0, the Ratio of split strength of existing Rubber-Asphalt Pavement material.As can be seen here, rubber powder ground surface material of the present invention
Water stability is better than the water stability of existing Rubber-Asphalt Pavement material.
, anti-fatigue performance test
Using four-point bending fatigue test, carry out fatigue behaviour evaluation, the strain of employing is 300 μ ε.Fatigue test condition
Temperature be 15 DEG C, the times of fatigue when modulus is reduced to initial modulus 50%, result of the test is as shown in table 5.
Table 5 fatigue test results (15 DEG C)
Table 5 shows, the fatigue life cycle of rubber powder ground surface material of the present invention is much larger than existing Rubber-Asphalt Pavement material
The fatigue life cycle of material, shows that the fatigue behaviour of rubber powder ground surface material of the present invention is good, and Reflective Cracking Resistance is relatively strong, suitable
The region more for crack.
Present invention also offers construction method during a kind of above-mentioned rubber powder ground surface material laying highway pavement, specifically press
Following steps are carried out:
Step 1: to needing the sub-layer laying section to clean, drifting dust and cleaning；
Take all-steel load-bearing radial tire, after whole tire is broken under normal temperature the fragment of 50 × 50mm, through rubber breaker twice
The blob of viscose of 10 × 10mm is cut in stranding, separates iron and fiber, sends into fine crusher, is ground into the thick glue that particle diameter is 1～3mm under normal temperature
Powder, is delivered to storage bin after again removing iron and fiber, grinds thick rubber powder and obtain the rubber powder of particle diameter 40～120 mesh under normal temperature；Press
Mass percent, takes rubber powder 18～20%, stabilization aid 3～7%, modifying agent 0.5～1.5% and the matrix pitch of surplus respectively；Base
Matter pitch is heated to 195 ± 2 DEG C, adds rubber powder, after high shear agitation 2～5min, adds stabilization aid, at 180～190 DEG C
At a temperature of stir 45～60min, obtain rubber asphalt；
Screening obtains the metaling of particle diameter 9.5～13.2mm, and in this metaling, particle diameter is more than 9.5～the rubble of 13.2mm
Mass percent is less than 10%；
Step 2: the rubber asphalt of temperature 180～190 DEG C is uniformly spread on paving sub-layer after the cleaning, rubber asphalt
Spread quantity is 2.2 ± 0.2 kg/m2, obtain rubber asphalt layer；
Stabilization aid uses Catalytic Cracking Slurry Oil With Furfural tapped oil, vita-inosculation or polyphosphoric acids (PPA).
Modifying agent uses thermoplastic styrene butadiene rubber (SBS).
Step 3: metaling is heated to temperature and is not less than 80 DEG C, is spread in uniform on rubber asphalt layer, metaling spread
Amount is 10～12kg/m2；
Metaling should clean the rubble being scattered in outside in time after dispensing.In order to avoid crushed stone spreading car and rubber asphalt layer
Produce adhesion, the load-carrying wheel of crushed stone spreading car can slightly spray water, but watering amount needs strict control, and water can not be caused to cohere
Trickle on layer.
Step 4: using the pneumatic-tired rollers of more than 25T to be compacted, number of rolling is 3 times；When rolling, if sub-layer
Temperature more than 40 DEG C, then completes to roll in 20min, if the temperature of sub-layer is at 18～40 DEG C, then completes to grind in 10min
Pressure, if sub-layer temperature is less than 18 DEG C, then stops construction；
Step 5: lay rubber powder ground surface material, during laying, spiral by the laying method of existing Rubber-Asphalt Pavement material
In distributing device, the height of rubber powder ground surface material is the 1/2～2/3 of spiral distributor height, and to avoid paving layer to occur, isolation is existing
As；The temperature of rubber powder ground surface material is not less than 160 DEG C, and coefficient of loose laying is 1.25, paving thickness 3.5～5.5cm；
Step 6: after laying rubber powder ground surface material, when its temperature is down to 157～164 DEG C, carries out rolling for the first time, rolls
Speed is 2.0km/h；When the rubber powder ground surface material temperature laid is down to 143～153 DEG C, carries out second time and roll, roll
Speed is 3.0km/h；When the rubber powder ground surface material temperature laid is down to 100～104 DEG C, carries out third time and roll, roll
Speed is 3.0km/h, obtains rubberized concrete road surface；Afterwards, mix at this rubber powder by existing Rubber-Asphalt Pavement construction method
Uniform spread sticking layer oil on solidifying soil surface, the spread quantity of sticking layer oil is 0.20～0.30kg/m2, form stress absorbing layer, complete
The construction of highway pavement.
Stress absorbing layer constructed after after at least 3 hours, could open to traffic, and speed is no more than 25km/h.Treat
Stress absorbing layer reaches to be open to traffic after requirement, and vehicle could normally travel.
Embodiment 1
Take the 9.00R20 type high-capacity tyre scrapped, after whole tire is broken under normal temperature the fragment of 50 × 50mm, through rubber breaker
The blob of viscose of 10 × 10mm is cut in twice stranding, separates iron and fiber, sends into fine crusher, is ground into the thick glue that particle diameter is 13mm under normal temperature
Powder, is delivered to storage bin after again removing iron and fiber, grinds thick rubber powder and obtain the rubber powder of particle diameter 40～120 mesh under normal temperature；Press
Mass percent, takes rubber powder 18%, Catalytic Cracking Slurry Oil With Furfural tapped oil 3%, thermoplastic styrene butadiene rubber 0.5% and surplus respectively
Matrix pitch；Matrix pitch is heated to 195 DEG C, adds rubber powder and thermoplastic styrene butadiene rubber, after high shear agitation 2min, adds
Catalytic Cracking Slurry Oil With Furfural tapped oil, stirs 45min at a temperature of 180 DEG C, obtains rubber asphalt；Take rubber asphalt, AR-
AC13S type compound and breeze, rubber asphalt is 7.5% with the mass percent of AR-AC13S type compound, breeze and AR-
The mass percent of AC13S type compound is 3%, and by AR-AC13S type mixed material heating to 185 DEG C, adding temperature is 180 DEG C
Rubber asphalt, stirs 115s, adds the breeze that temperature is 185 DEG C, stirs 115s, obtains rubber powder ground surface material.Needs are spread
If the sub-layer in section carries out cleaning, drifting dust and cleaning；The rubber asphalt of temperature 180 DEG C uniformly spreads paving hold down
On layer, the spread quantity of rubber asphalt is 2.2 kg/m2, obtain rubber asphalt layer；The metaling of particle diameter 9.5～13.2mm is heated to
80 DEG C, being spread in uniform on rubber asphalt layer, metaling spread quantity is 10kg/m2；The temperature of sub-layer, more than 40 DEG C, uses
The pneumatic-tired rollers of more than 25T complete 3 times in 20min and roll；Lay by the laying method of existing Rubber-Asphalt Pavement material
Rubber powder ground surface material, during laying, in spiral distributor, the height of rubber powder ground surface material is the 1/2 of spiral distributor height,
The temperature of rubber powder ground surface material is not less than 160 DEG C, and coefficient of loose laying is 1.25, paving thickness 3.5cm；Lay rubber powder road surface material
After material, when its temperature is down to 157 DEG C, carrying out rolling for the first time, rolling speed is 2.0km/h；The rubber powder ground surface material laid
When temperature is down to 143 DEG C, carrying out second time and roll, rolling speed is 3.0km/h；The rubber powder ground surface material temperature laid is down to
When 100 DEG C, carrying out third time and roll, rolling speed is 3.0km/h, obtains rubberized concrete road surface；Afterwards, drip by existing rubber
Blue or green pavement construction method uniform spread sticking layer oil on this rubberized concrete road surface, the spread quantity of sticking layer oil is 0.20kg/m2,
Form stress absorbing layer, complete the construction of highway pavement.
Embodiment 2
Take the 10.00R20 type high-capacity tyre scrapped, after whole tire is broken under normal temperature the fragment of 50 × 50mm, through broken glue
The blob of viscose of 10 × 10mm is cut in twice stranding of machine, separates iron and fiber, sends into fine crusher, and being ground into particle diameter under normal temperature is 1～3mm
Thick rubber powder, is delivered to storage bin after again removing iron and fiber, grinds thick rubber powder and obtain the glue of particle diameter 40～120 mesh under normal temperature
Powder；By mass percentage, the matrix drip of rubber powder 20%, vita-inosculation 7%, thermoplastic styrene butadiene rubber 1.5% and surplus is taken respectively
Blue or green；Matrix pitch is heated to 197 DEG C, adds rubber powder and thermoplastic styrene butadiene rubber, after high shear agitation 5min, adds Wei Talian
Connect agent, at a temperature of 190 DEG C, stir 60min, obtain rubber asphalt；Take rubber asphalt, AR-AC-13 type compound and breeze, rubber
Glue pitch is 8.7% with the mass percent of AR-AC-13 type compound, breeze and the mass percent of AR-AC-13 type compound
It is 7%, by AR-AC-13 type mixed material heating to 195 DEG C, adds the rubber asphalt that temperature is 190 DEG C, stir 95s, add temperature
Degree is the breeze of 195 DEG C, stirs 95s, obtains rubber powder ground surface material.To need lay section sub-layer clean, drifting dust
And cleaning；Uniformly being spread by the rubber asphalt of temperature 190 DEG C on paving sub-layer after the cleaning, the spread quantity of rubber asphalt is 2.4
kg/m2, obtain rubber asphalt layer；The metaling of particle diameter 9.5～13.2mm is heated to 100 DEG C, is spread in uniform in rubber asphalt layer
On, metaling spread quantity is 12kg/m2；The temperature of sub-layer is 40 DEG C, uses the pneumatic-tired rollers of more than 25T in 10min
Complete 3 times to roll；Rubber powder ground surface material, during laying, spiral cloth is laid by the laying method of existing Rubber-Asphalt Pavement material
In glassware, the height of rubber powder ground surface material is the 2/3 of spiral distributor height, and the temperature of rubber powder ground surface material is not less than 160
DEG C, coefficient of loose laying is 1.25, paving thickness 5.5cm；Lay after rubber powder ground surface material, when its temperature is down to 164 DEG C, carry out the
Once rolling, rolling speed is 2.0km/h；When the rubber powder ground surface material temperature laid is down to 153 DEG C, carries out second time and grind
Pressure, rolling speed is 3.0km/h；When the rubber powder ground surface material temperature laid is down to 104 DEG C, carries out third time and roll, roll
Speed is 3.0km/h, obtains rubberized concrete road surface；Afterwards, mix at this rubber powder by existing Rubber-Asphalt Pavement construction method
Uniform spread sticking layer oil on solidifying soil surface, the spread quantity of sticking layer oil is 0.30kg/m2, form stress absorbing layer, complete highway road
The construction in face.
Embodiment 3
Take the 11.00R20 type high-capacity tyre scrapped, after whole tire is broken under normal temperature the fragment of 50 × 50mm, through broken glue
The blob of viscose of 10 × 10mm is cut in twice stranding of machine, separates iron and fiber, sends into fine crusher, and being ground into particle diameter under normal temperature is 1～3mm
Thick rubber powder, is delivered to storage bin after again removing iron and fiber, grinds thick rubber powder and obtain the glue of particle diameter 40～120 mesh under normal temperature
Powder；By mass percentage, rubber powder 19%, polyphosphoric acids 5%, thermoplastic styrene butadiene rubber 1.0% and the matrix pitch of surplus are taken respectively；
Matrix pitch is heated to 193 DEG C, adds rubber powder and thermoplastic styrene butadiene rubber, after high shear agitation 3.5min, adds poly phosphorus
Acid, stirs 52min at a temperature of 185 DEG C, obtains rubber asphalt；Take rubber asphalt, ARHM-13W type compound and breeze, rubber
Pitch is 8.1% with the mass percent of ARHM-13W type compound, and breeze with the mass percent of ARHM-13W type compound is
5%, by ARHM-13W type mixed material heating to 190 DEG C, add the rubber asphalt that temperature is 185 DEG C, stir 105s, add temperature
Degree is the breeze of 190 DEG C, stirs 105s, obtains rubber powder ground surface material.To need lay section sub-layer clean, drifting dust
And cleaning；Uniformly being spread by the rubber asphalt of temperature 185 DEG C on paving sub-layer after the cleaning, the spread quantity of rubber asphalt is 2.0
kg/m2, obtain rubber asphalt layer；The metaling of particle diameter 9.5～13.2mm is heated to 90 DEG C, is spread in uniform in rubber asphalt layer
On, metaling spread quantity is 11kg/m2；The temperature of sub-layer is 18 DEG C, uses the pneumatic-tired rollers of more than 25T in 10min
Complete 3 times to roll；Rubber powder ground surface material, during laying, spiral cloth is laid by the laying method of existing Rubber-Asphalt Pavement material
In glassware, the height of rubber powder ground surface material is the 7/12 of spiral distributor height, and the temperature of rubber powder ground surface material is not less than
160 DEG C, coefficient of loose laying is 1.25, paving thickness 4.5cm；After laying rubber powder ground surface material, when its temperature is down to 161 DEG C, enter
Row rolls for the first time, and rolling speed is 2.0km/h；When the rubber powder ground surface material temperature laid is down to 148 DEG C, carry out second time
Rolling, rolling speed is 3.0km/h；When the rubber powder ground surface material temperature laid is down to 102 DEG C, carries out third time and roll, grind
Pressure speed is 3.0km/h, obtains rubberized concrete road surface；Afterwards, by existing Rubber-Asphalt Pavement construction method at this rubber powder
Uniform spread sticking layer oil on concrete road surface, the spread quantity of sticking layer oil is 0.25kg/m2, form stress absorbing layer, complete highway
The construction on road surface.
Embodiment 4
Take the 12.00R20 type high-capacity tyre scrapped, prepare rubber powder, rubber asphalt and rubber the most successively
Powder ground surface material, then obtain rubber asphalt layer as described in Example 1, after dispensing metaling, the temperature of sub-layer is 29 DEG C, uses
The pneumatic-tired rollers of more than 25T complete 3 times in 10min and roll；Then, executing of highway pavement is completed as described in Example 1
Work.
Claims (6)
1. a rubber powder ground surface material, it is characterised in that this ground surface material prepares by the following method:
Step 1: take the all-steel load-bearing radial tire scrapped, broken under normal temperature, separate and be ground into particle diameter under iron and fiber, normal temperature
Be the thick rubber powder of 1～3mm, after again removing iron and fiber, be delivered under storage bin, normal temperature grind thick rubber powder, obtain particle diameter 40～
The rubber powder of 120 mesh；
Step 2: by mass percentage, takes rubber powder 18～20%, stabilization aid 3～7%, modifying agent 0.5～1.5% and surplus respectively
Matrix pitch；Matrix pitch is heated to 195 ± 2 DEG C, adds rubber powder and modifying agent, after high shear agitation 2～5min, adds
Stabilization aid, stirs 45～60min at a temperature of 180～190 DEG C, obtains rubber asphalt；
Step 3: take rubber asphalt, mineral aggregate and breeze, rubber asphalt is 7.5～8.7% with the mass percent of mineral aggregate, breeze with
The mass percent of mineral aggregate is 3～7%, and mineral aggregate is heated to 185～195 DEG C, adds the rubber asphalt that temperature is 180～190 DEG C,
Stirring 95～115s, adds the breeze that temperature is 185～195 DEG C, stirs 95～115s, obtains rubber powder ground surface material；
Described mineral aggregate uses AR-AC13S type compound, AR-AC-13 type compound or ARHM-13W type compound.
Rubber powder ground surface material the most according to claim 1, it is characterised in that the stabilization aid in described step 2 uses
Catalytic Cracking Slurry Oil With Furfural tapped oil, vita-inosculation or polyphosphoric acids.
Rubber powder ground surface material the most according to claim 1, it is characterised in that the modifying agent in described step 2 uses heat
Plasticity butadiene-styrene rubber.
4. the construction method laying highway pavement with rubber powder ground surface material described in claim 1, it is characterised in that concrete
Sequentially include the following steps:
Step 1: to needing the sub-layer laying section to clean, drifting dust and cleaning；
Step 2: the rubber asphalt of temperature 180～190 DEG C is uniformly spread on paving sub-layer after the cleaning；
Step 3: the metaling of particle diameter 9.5～13.2mm is heated to temperature and is not less than 80 DEG C, be spread in uniform in rubber asphalt layer
On；
Step 4: if sub-layer temperature is more than 40 DEG C, then completes 3 times in 20min and roll；If sub-layer temperature is 18～40 DEG C,
Then complete 3 times to roll in 10min, if sub-layer temperature is less than 18 DEG C, then stop construction；
Step 5: lay rubber powder ground surface material, during laying, screw distribution by the laying method of existing Rubber-Asphalt Pavement material
In device, the height of rubber powder ground surface material is the 1/2～2/3 of spiral distributor height；The temperature of rubber powder ground surface material is not less than
160 DEG C, coefficient of loose laying is 1.25, paving thickness 3.5～5.5cm；
Step 6: after laying rubber powder ground surface material, when its temperature is down to 157～164 DEG C, carries out rolling for the first time, rolling speed
For 2.0km/h；When the rubber powder ground surface material temperature laid is down to 143～153 DEG C, carries out second time and roll, rolling speed
For 3.0km/h；When the rubber powder ground surface material temperature laid is down to 100～104 DEG C, carries out third time and roll, rolling speed
For 3.0km/h, obtain rubberized concrete road surface；Afterwards, by existing Rubber-Asphalt Pavement construction method at this rubberized concrete
Uniform spread sticking layer oil on road surface, the spread quantity of sticking layer oil is 0.20～0.30kg/m2, form stress absorbing layer, complete highway
The construction on road surface.
Construction method the most according to claim 4, it is characterised in that in described step 2, the spread quantity of rubber asphalt is 2.2
±0.2 kg/m2。
Construction method the most according to claim 4, it is characterised in that described step 3 medium stone material spread quantity be 10～
12kg/m2。
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| CN108221560B (en) * | 2017-12-30 | 2020-06-02 | 中铁十八局集团第五工程有限公司 | Construction process of rubber powder modified asphalt pavement |
| CN109053033B (en) * | 2018-06-20 | 2019-11-22 | 河南城建学院 | Waste and old reclaimed rubber sole powder composite waste clothing regenerated fiber enhancing asphalt and preparation method thereof |
| CN114561846A (en) * | 2022-03-01 | 2022-05-31 | 江西省交通工程集团建设有限公司 | Construction method of foamed asphalt warm-mix recycled pavement |
| CN114508018A (en) * | 2022-03-28 | 2022-05-17 | 河北建设集团卓诚路桥工程有限公司 | Construction method for upper surface layer by using high-mixing-amount rubber powder asphalt concrete |
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| CN102453335A (en) * | 2010-10-15 | 2012-05-16 | 中国石油化工股份有限公司 | Environment-friendly oil-resistant asphalt pavement material and preparation method thereof |
| CN104446157A (en) * | 2014-10-31 | 2015-03-25 | 扬州大学 | Composite modified asphalt mixture of rubber powder with high anti-rutting performance and preparation method thereof |
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| CN102453335A (en) * | 2010-10-15 | 2012-05-16 | 中国石油化工股份有限公司 | Environment-friendly oil-resistant asphalt pavement material and preparation method thereof |
| CN104446157A (en) * | 2014-10-31 | 2015-03-25 | 扬州大学 | Composite modified asphalt mixture of rubber powder with high anti-rutting performance and preparation method thereof |
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