CN104072024A - Preparation process of asphalt mixture - Google Patents
Preparation process of asphalt mixture Download PDFInfo
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- CN104072024A CN104072024A CN201410250782.4A CN201410250782A CN104072024A CN 104072024 A CN104072024 A CN 104072024A CN 201410250782 A CN201410250782 A CN 201410250782A CN 104072024 A CN104072024 A CN 104072024A
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Abstract
The invention discloses a preparation process of an asphalt mixture. The preparation process comprises the steps of preparing basalt fibers, preparing rubber particles, preparing rubbles, heating asphalt, preparing mineral powder and mixing the materials, wherein during mixing, the weight percents of asphalt, rubbles, rubber particles, basalt fibers and mineral powder are respectively 15-32%, 8-14%, 9-14%, 45-64% and 4-7%. The preparation process has the advantages that the basalt fibers are added to the asphalt mixture to improve the strength and high/low temperature resistance of the asphalt mixture; the pavement made from the asphalt mixture cannot be damaged by either ice and snow in the north or exposure to the sun in the south; the pavement has good roughness and tracks can be avoided, and thus the potential safety hazards caused by the tracks are eliminated.
Description
Technical field
The invention belongs to road and bridge construction field, relate in particular to the preparation technology as the asphalt of highway pavement.
Background technology
There are bituminous pavement and cement pavement in the road surface of motorway or avenue highway, and bituminous pavement is little to the friction of tire, but to hot day be subject to thermal softening, automobile rolls and forms rut later, bonding pitch on tire, the one, easily cause traffic accident, but larger to tire infringement.And cement pavement is large to the friction of tire, large to the wearing and tearing of tire, and also cost is higher.
Therefore, the road surface of laying now, and what adopt is asphaltic road-mix surface course, and existing asphalt is by binder difference used, can be divided into petroleum pitch and two large classes coal-tar pitch; Some country also has and adopts or mix rock asphalt mixing.By the kind difference of gathering materials used, can be divided into several classes rubble, gravel, chiltern, slag, adopt the most general with rubble.Press compound maximum particle size difference, can be divided into the number classes such as coarse grain (35～40 millimeters following), middle grain (20～25 millimeters following), particulate (10～15 millimeters following), sand grains (5～7 millimeters following).Press the compaction rate difference of compound, can be divided into the number classes such as close-graded, half open gradation and open gradation, open mix also claims asphalt macadam.Wherein to mix the close-graded macadam-aggregate mix of heat paving durable in use for heat, and intensity is high, and good integrity is the representative materials of building senior bituminous pavement, applies the most extensively.Various countries work out and have different specifications bituminous concrete, the heat that China formulates is mixed hot petrolize compound technical specifications, is called bituminous concrete with voidage 10% and following person, is subdivided into again I type and II type, the porosity of I type is 3 (or 2)～6%, belongs to close-graded type; II type is 6～10%, belongs to half open gradation type; The above person of voidage 10% is called asphalt macadam, belongs to open gradation type.
Existing asphalt mainly contains following several:
Asphalt mixture with plentiful aggregate (SAC)
The vehicle of larger flow is safety, comfortable current at high speed on motorway, and oil mat must have good cling property.This just requires oil mat not only will have larger coefficient of friction, and will have darker surface texture depth (construction depth is that high speed traveling sound reduction and minimizing water " LM " float, dabbling affects the principal element of driver's sight line).Achievement in research in recent years shows: " cling property of oil mat is to be formed by the microtexture of surface layer structure and macrostructure two portions.Wherein macrostructure derives from the proportioning of asphalt, is mainly determined by thickness, the grating form of aggregate ".
The mid-80 China starts to build high-grade highway, the structure formation from oil mat: I type bituminous concrete, voidage 3%～6%, water-permeable is little, good endurance, and the frictional coefficient of upper layer can reach requirement, but surface texture depth is less, far can not reach requirement.II type bituminous concrete voidage 6%～10%, surface structure is dark, and non-deformability is stronger, but its water-permeable, weather resistance are poor.In order to solve the cling property (particularly upper layer, in the situation that construction depth is larger, has again the structure formation of good water-repellancy) of oil mat, stone asphalt Course is carried out research and uses.
Asphalt mixture with plentiful aggregate
Asphalt mixture with plentiful aggregate is to adopt more coarse crushing stone to form skeleton, and asphalt sand mastic is filled the hole in skeleton and made the glued together and asphalt form that forms of skeleton.Specifically consist of: content of coarse aggregate 69%～78%, breeze 6%～10%, bitumen aggregate ratio 5% left and right.Through facts have proved of several high highways, stone asphalt Course can provide darker surface structure, there is again traditional I type bituminous concrete such less space and less water-permeable, there is again good ability of anti-deformation (dynamic stability is higher) simultaneously.In other words, " many rubbles bituminous concrete had both had advantages of traditional I type bituminous concrete, had advantages of again II type bituminous concrete, had avoided again the deficiency of two kinds of traditional asphalt concrete structure forms simultaneously.”
Stone mastic asphalt (SMA)
The German traffic of the sixties is very flourishing, and according to national climatic characteristic (20 DEG C of left and right of summer temperature, winter is not too cold), custom is built " pouring asphalt concrete " road surface.This structure Asphalt Content 12% left and right, breeze content is high.The rut of finding road surface in use is very serious, in addition at that time this national automobile for anti-skidding needs, often use the tire (comprising that some countries of Europe are also like this) of band nail, consequently pavement abrasion very serious (1 year can attenuate 4cm left and right).In order to overcome day by day serious rut, reduce the abrasion on road surface, highway worker adjusts the proportioning of asphalt, increases the ratio of coarse aggregate, adds fiber stabilizer, has formed the first shape of SMA structure.German traffic departments in 1984 have formally formulated the design and construction specification on a SMA road surface, and SMA pavement structure form is able to perfect substantially.This novel pavement structure is successively promoted, is used gradually in Germany, some countries of Europe.The beginning of the nineties, American Highway circle think its Pavement Road Surface Quality not as the pavement quality of European countries good.Through investigating the gap of finding to exist two aspects: 1. in the utilization at modifying asphalt; 2. in the structure formation on road surface (being SMA).1991,1992 start studied, promoted this structure formation of SMA, most typical: nineteen ninety-five Atlanta for host the Olympic Games to network of highways reconstruct with newly-built, all adopted this structure formation of SMA to do road surface.
Stone mastic asphalt road surface (SMA)
Stone mastic asphalt (SMA) is a kind of bitumastic binder with pitch, breeze and fiber stabilizer composition, is filled in the mineral aggregate skeleton of gap grading the compound forming.Its composition characteristic mainly comprises two aspects: 1. the more mutual interlocking of coarse aggregate of content forms the structural framework of high stability (non-deformability is strong); 2. the bitumastic of fine aggregate breeze, pitch and fiber stabilizer composition skeleton is cementing together with, and fill skeleton space, make compound have good flexibility and weather resistance.
The structure composition of SMA can be summarized as " three-many-one-little, that is: coarse aggregate is many, breeze is many, pitch is many, fine aggregate is few ".Specifically: 1. SMA is a kind of asphalt of gap grading, coarse aggregate ratio more than 5mm is up to 70%～80%, and the consumption of breeze reaches 7%～13%, (" Ratio of filler bitumen " exceeds the restriction of general value 1.2).The gap grading forming thus, is seldom used fine aggregate; 2. for adding more pitch, increase breeze consumption on the one hand, use fiber as stablizer simultaneously; 3. asphalt content is more, and up to 6.5%～7%, cohesiveness requires high, and wishes to select the pitch that penetration degree is little, softening temperature is high, temperature stability is good (preferably adopting modifying asphalt)
The feature of SMA: stone mastic asphalt is that a kind of non-deformability of current generally acknowledged (using more) is in the world strong, the good bituminous mixtures for pavement surface of weather resistance.Due to the good embedded squeezing of coarse aggregate, compound has extraordinary high temperature rutting resistance, and due to the cohesive action of bitumastic, low-temperature deformation performance and water stability also have more improvement simultaneously.Add fiber stabilizer, make asphaltic binder keep high viscosity, it paves better with consolidation effect.Gap grading forms macrovoid on surface, and construction depth is large, and cling property is good.The space of compound is very little again simultaneously, and ageing-resistant performance and weather resistance are all fine, thereby have improved the Pavement Performance of asphalt comprehensively.
Rubber asphalt (AR)
Rubber asphalt is first junked tire protoplasm to be processed into rubber powder, combine in certain thickness grating ratio again, add multiple high polymers properties-correcting agent simultaneously, and under the hot conditions of abundant mix (more than 180 DEG C), with the fully molten swollen cementing material of the modifying asphalt forming afterwards that reacts of matrix pitch.Rubber asphalt has the performances such as high-temperature stability, low temperature flexibility, resistance to deterioration, fatigue resistance, water resistant damageability, is comparatively desirable environment-friendly type ground surface material, is mainly used at present in the stress absorbing layer and upper layer in road structure.
Rubber asphalt, through the application of 50 years, has formed two ripe graded mixture product lines.Compared with conventional asphalt, rubber-asphalt mixture has higher asphalt content (7.5% left and right).
Open mix (AR-OGFC): be that main aggregate blending forms by high consumption rubber asphalt (9-10%) and single particle size rubble.
Feature and application: open mix has good antiskid, splash-proof, noise-reducing and lasting stability are the ideal surfaced layer materials of motorway and urban express way.The outstanding Reflective Cracking Resistance of open mix, is widely used in cement pavement ultrathin overlay simultaneously.
Gap-graded mix (AR-GAP): formed by median diameter gap grading and rubber asphalt mix.Dynamic stability reaches more than 3000, and freeze thawing splitting value reaches more than 80.
Feature and application: owing to possessing good surface structure, dense water, anti-shear stability, gap grading and compound are widely used in and intersect and more urban road surface layer and the reinforced structure of speed change.
The performance advantage of Rubber-Asphalt Pavement:
Excellent fatigue resistance improves the endurance quality on road surface;
Because agglutinate content is high, good springiness, improve the resistivity of road surface to fatigue crack, reflection crack;
Stronger low temperature flexibility has alleviated the temperature sensitivity on road surface;
Because agglutinate content is high, oil film is thick and tire in contain antioxidant, therefore improved, road is anti-aging, resistance of oxidation;
Excellent anti-rut, permanent deformation resistance;
Because the weather resistance of road is improved, the maintenance costs of road is significantly reduced;
A large amount of junked tires that use, had both saved the energy, were also conducive to environment protection;
Carbon black in rubber can make road surface black preserve for a long time, high with the contrast gradient of graticule, the security that has improved road;
When rubber asphalt is used for asphalt, due to construction thin thickness, construction rapidly, has been shortened the engineering time.
Superpave asphalt (SUP)
Superpave asphalt is one of achievement in research of American strategy highway research project (SHRP).Superpave is the abbreviation of Superior Performing Asphalt Pavement, the Chinese meaning exactly " high performance asphalt pavement " Superpave Asphalt Mixture Design method is a kind of brand-new Asphalt Mixture Design method, comprise asphaltic binder specification, design of Asphalt Mix Volume, computer software and relevant use equipment, test method and standard.The design of Sperpave compound is divided into three levels: mixture volume design also claims level I design, uses gyratory compactor (SGC) and requires to select asphalt content according to Volume design.The medium Pavement Performance level design of compound also claims level II design, is designed to basis with mixture volume, and additional one group of SST and IDT test to reach a series of performance predictions.The highest Pavement Performance level design of compound also claims level III design, is designed to basis with mixture volume, and additional SST and IDT test are to test in a wide temperature variation range.Owing to having comprised trial stretch and result widely, completely analyze more reliable performance prediction level can be provided.Superpave Asphalt Mixture Design system is according to the weather of project location and design traffic capacity, material is selected all to concentrate in Volume design method with compound design, the method requires in the time of Designing Asphalt Pavement, take into full account within the period of service and affect to temperature road pavement, require the road surface requirement that can meet high-temperature behavior in the time of the highest design temperature, do not produce excessively rut; In the time of the minimum temperature of road surface, the requirement that can meet low-temperature performance, avoids or reduces cold cracking; Within the scope of normal temperature, control fatigue cracking.For asphaltic binder, adopt rotary thin film in drying oven to test to simulate asphalt mixing and stirring and pave aging in engineering; Adopt aging in pavement usage engineering of pressure ageing tank simulation pitch.For gathering materials, in the time carrying out mixture gradation design, adopt the concept of reference mark and restricted area to limit, optimization test gradation design.For asphalt, after mixing, adopt short ageing to simulate asphalt mixing and stirring aging in compacting process of paving, bitumen mixture specimen adopts rotary compactor to prepare.In test specimen compacting process, record the relation of gyratory compaction number of times and height of specimen, thereby asphalt mixture volume characteristic is evaluated.So-called Superpave mixture volume design is to carry out hot-mix asphalt mixture design according to the voidage of asphalt, void in mineral aggregate, pitch interstitial rate equal-volume characteristic, method mainly contains that designing material is selected, asphalt mixes and stirs, asphalt mixture volume analysis and compound checking, comprises bulk property and water sensitivity.Asphalt mixture volume design process is mainly made up of four parts: 1. material is selected; 2. aggregate grading is selected; 3. determine asphalt optimum asphalt content; 4. assess the checking of asphalt, comprise bulk property and water sensitivity.Suerpave asphalt mixture volume design method all has strict regulation to material, aggregate grading, compound, and has formulated and strictly regulated accordingly requirement, comprises agglutinate specification, aggregate specification, compound specification.
SBS modified asphalt concrete (SBS)
SBS modifying asphalt is on the basis of original matrix pitch, the SBS properties-correcting agent of admixture 2.5%, 3.0%, 4.0%, and the pitch after modification, compared with protobitumen, its high temperature viscosity increases, and softening temperature raises.Under good design mixture proportion and execution conditions, weather resistance and the high-temperature stability of bituminous pavement obviously improve.
Modifying asphalt and Indexes of Evaluation Effect thereof
So-called modifying asphalt, also comprise modified asphalt mixture, refer to " admixture rubber, resin, high molecular polymer, the levigate additive (properties-correcting agent) such as rubber powder or other fillers; or take measures such as pitch mild oxidation processing, the performance that makes pitch or asphalt is improved and the asphaltic binder made ".Properties-correcting agent refers to " the natural or artificial organic or inorganic material adding in pitch or asphalt; melting, be dispersed in pitch improves or improve the material of bituminous pavement property (react with pitch or wrap in surface of aggregate) ".The quality of modified effect, mainly evaluates by modifying asphalt index, and the evaluation index of modifying asphalt is: (1) Susceptibility Indexes: penetrative index (penetration degree).(2) low-temperature performance index: 5 DEG C of ductilities and equivalent brittle point.(3) r: 60 DEG C of viscosity, softening temperature and equivalent softening temperatures.(4) thermostability (ageing-resistant) index: rotary thin film in drying oven test.(5) pitch viscoelastic effect index: recovery of elasticity.6. pitch and the bond stress index of gathering materials: sticky toughness test.7. construction and safety index: flash-point, 135 DEG C of kinematic viscosity.8. the index of emanating: softening point difference.
Heat pressing type bituminous concrete (HRA)
Heat pressing type bituminous concrete pavement (Hot Rolled Asphalt Pavement, HRA), as a kind of bituminous concrete pavement form of uniqueness, is widely used in Britain.
All there is following defect in above-mentioned existing asphalt:
Low temperature resistant poor with resistance to elevated temperatures, little for northern cold condition, the easy embrittlement crust in road surface, asphalt arches upward, lose surface evenness, for the area in exposure in sunshine for a long time, south, asphalt is softening, may there is pavement asphalt variable thickness, cause the rough defect in road surface.
Summary of the invention
For high temperature resistant, the defect that resistance to low temperature is poor that overcome that above-mentioned various asphalt exists, the invention provides a kind of preparation technology of asphalt, this technique has been added basalt fibre in asphalt, strengthen the intensity of asphalt and high temperature resistant and low temperature resistant performance, can be for a long time in exposure in sunshine, can be used for again ice and snow weather, scope of application light, long service life.
A preparation technology for asphalt, is characterized in that: comprise following processing step:
The first step: produce basalt fibre
By the short continuous basalt fiber basalt fibre staple fibre that is cut into, on fiber, coat (silane) treating compound,
Second step: produce rubber grain
The rubber of waste tire is cut into particulate state,
The 3rd step: produce rubble
The mixture of basalt stone, granite or two kinds of rocks is broken into particulate state with jaw crusher or roller crusher,
The 4th step: heated asphalt
Asphalt heating is melted into emulsus,
The 5th step: produce breeze
Ore reduction is become to particulate state with jaw crusher or roller crusher,
The 6th step: mix
In agitator, above-mentioned substance is mixed according to following weight proportion:
Pitch: 15% ~ 32%
Rubble: 8% ~ 14%
Rubber grain: 9% ~ 14%
Basalt fibre: 45% ~ 64%
Breeze: 4% ~ 7%.
The granularity of described rubble is 3mm ~ 12mm, and rubber grain granularity is 1mm ~ 3mm, and basalt fibre is basalt fibre staple fibre, and the granularity of described breeze is 0.5mm ~ 1.2mm.
Granularity refers to the size of particle, and the granularity of spherical particles represents with diameter conventionally, and the granularity of cubic granules represents by the length of side.To irregular mineral grain, can will there is a certain sphere diameter of identical behavior as the equivalent diameter of this particle with mineral grain.
Described rubble is the mixture of basalt stone, granite or two kinds of rocks.
Described rubber grain is to make with waste tire.
Basalt fibre staple fibre is with the short product forming of cutting of continuous basalt fiber precursor.On fiber, scribble (silane) treating compound.
Continuous basalt fiber be basalt building stones after 1450 DEG C～1500 DEG C meltings, the continuous fibre forming by platinum rhodium bushing high speed pulling.Be similar to glass fibre, its performance is between high strength S glass fibre and alkali-free E glass fibre, and the color of pure natural basalt fibre is generally brown, and some is like golden.
The present invention has the following advantages:
1, the present invention includes pitch, rubble, rubber grain, basalt fibre and breeze, by weight percentage: pitch: 15% ~ 32%, rubble: 8% ~ 14%, rubber grain: 9% ~ 14%, basalt fibre: 45% ~ 64% breeze: 4% ~ 7%.In asphalt, add basalt fibre, improve the intensity of asphalt, high temperature resistant and low temperature resistant performance, no matter be northern ice and snow weather, or tanning by the sun of the southern sun, can not destroy the road surface made from the present invention, surface evenness is good, also can not leave rut, eliminates the potential safety hazard that rut brings.
2, the granularity of rubble of the present invention is 3mm ~ 12mm, and rubber grain granularity is 1mm ~ 3mm, and basalt fibre is basalt fibre staple fibre, and the granularity of described breeze is 0.5mm ~ 1.2mm.Asphalt pliability and the intensity made like this can reach requirement, and the surface evenness of making can be protected, and are also convenient to workman's construction.
Embodiment
Embodiment 1
A kind of asphalt, comprises pitch, rubble, rubber grain, basalt fibre and breeze, by weight percentage:
Pitch: 32%
Rubble: 8%
Rubber grain: 10%
Basalt fibre: 46%
Breeze: 4%.
The granularity of described rubble is 3mm, and rubber grain granularity is 3mm, and basalt fibre is basalt fibre staple fibre, and the granularity of described breeze is 0.5mm.
Granularity refers to the size of particle, and the granularity of spherical particles represents with diameter conventionally, and the granularity of cubic granules represents by the length of side.To irregular mineral grain, can will there is a certain sphere diameter of identical behavior as the equivalent diameter of this particle with mineral grain.
Described rubble is the mixture of basalt stone, granite or two kinds of rocks.
Described rubber grain is to make with waste tire.
Basalt fibre staple fibre is with the short product forming of cutting of continuous basalt fiber precursor.On fiber, scribble (silane) treating compound.
Continuous basalt fiber be basalt building stones after 1450 DEG C～1500 DEG C meltings, the continuous fibre forming by platinum rhodium bushing high speed pulling.Be similar to glass fibre, its performance is between high strength S glass fibre and alkali-free E glass fibre, and the color of pure natural basalt fibre is generally brown, and some is like golden.
The present invention also provides the preparation technology of this asphalt:
The first step: produce basalt fibre
By the short continuous basalt fiber basalt fibre staple fibre that is cut into, on fiber, coat (silane) treating compound,
Second step: produce rubber grain
The rubber of waste tire is cut into particulate state, and grain graininess is 3mm,
The 3rd step: produce rubble
The mixture of basalt stone, granite or two kinds of rocks is broken into the particle that granularity is 3mm with jaw crusher or roller crusher,
The 4th step: heated asphalt
Asphalt heating is melted into emulsus,
The 5th step: produce breeze
With jaw crusher or roller crusher, ore reduction being become to granularity is the particle of 0.5mm,
The 6th step: mix
In agitator, above-mentioned substance is proportionally mixed.
Embodiment 2
A kind of asphalt, comprises pitch, rubble, rubber grain, basalt fibre and breeze, by weight percentage:
Pitch: 15%
Rubble: 8%
Rubber grain: 9%
Basalt fibre: 64%
Breeze: 4%.
The granularity of described rubble is 8mm, and rubber grain granularity is 2mm, and basalt fibre is basalt fibre staple fibre, and the granularity of described breeze is 0.8mm.
Granularity refers to the size of particle, and the granularity of spherical particles represents with diameter conventionally, and the granularity of cubic granules represents by the length of side.To irregular mineral grain, can will there is a certain sphere diameter of identical behavior as the equivalent diameter of this particle with mineral grain.
Described rubble is the mixture of basalt stone, granite or two kinds of rocks.
Described rubber grain is to make with waste tire.
Basalt fibre staple fibre is with the short product forming of cutting of continuous basalt fiber precursor.On fiber, scribble (silane) treating compound.
Continuous basalt fiber be basalt building stones after 1450 DEG C～1500 DEG C meltings, the continuous fibre forming by platinum rhodium bushing high speed pulling.Be similar to glass fibre, its performance is between high strength S glass fibre and alkali-free E glass fibre, and the color of pure natural basalt fibre is generally brown, and some is like golden.
The present invention also provides the preparation technology of this asphalt:
The first step: produce basalt fibre
By the short continuous basalt fiber basalt fibre staple fibre that is cut into, on fiber, coat (silane) treating compound,
Second step: produce rubber grain
The rubber of waste tire is cut into particulate state, and grain graininess is 2mm,
The 3rd step: produce rubble
The mixture of basalt stone, granite or two kinds of rocks is broken into the particle that granularity is 8mm with jaw crusher or roller crusher,
The 4th step: heated asphalt
The 5th step: produce breeze
With jaw crusher or roller crusher, ore reduction being become to granularity is the particle of 0.8mm,
The 6th step: mix
In agitator, above-mentioned substance is proportionally mixed.
Embodiment 3
A kind of asphalt, comprises pitch, rubble, rubber grain, basalt fibre and breeze, by weight percentage:
Pitch: 27%
Rubble: 14%
Rubber grain: 14%
Basalt fibre: 48%
Breeze: 7%.
The granularity of described rubble is 12mm, and rubber grain granularity is 3mm, and basalt fibre is basalt fibre staple fibre, and the granularity of described breeze is 1.2mm.
Granularity refers to the size of particle, and the granularity of spherical particles represents with diameter conventionally, and the granularity of cubic granules represents by the length of side.To irregular mineral grain, can will there is a certain sphere diameter of identical behavior as the equivalent diameter of this particle with mineral grain.
Described rubble is the mixture of basalt stone, granite or two kinds of rocks.
Described rubber grain is to make with waste tire.
Basalt fibre staple fibre is with the short product forming of cutting of continuous basalt fiber precursor.On fiber, scribble (silane) treating compound.
Continuous basalt fiber be basalt building stones after 1450 DEG C～1500 DEG C meltings, the continuous fibre forming by platinum rhodium bushing high speed pulling.Be similar to glass fibre, its performance is between high strength S glass fibre and alkali-free E glass fibre, and the color of pure natural basalt fibre is generally brown, and some is like golden.
The present invention also provides the preparation technology of this asphalt:
The first step: produce basalt fibre
By the short continuous basalt fiber basalt fibre staple fibre that is cut into, on fiber, coat (silane) treating compound,
Second step: produce rubber grain
The rubber of waste tire is cut into particulate state, and grain graininess is 3mm,
The 3rd step: produce rubble
The mixture of basalt stone, granite or two kinds of rocks is broken into the particle that granularity is 12mm with jaw crusher or roller crusher,
The 4th step: heated asphalt
Asphalt heating is melted into emulsus,
The 5th step: produce breeze
With jaw crusher or roller crusher, ore reduction being become to granularity is the particle of 1.2mm,
The 6th step: mix
In agitator, above-mentioned substance is proportionally mixed.
Claims (4)
1. a preparation technology for asphalt, is characterized in that: comprise following processing step:
The first step: produce basalt fibre
By the short continuous basalt fiber basalt fibre staple fibre that is cut into, on fiber, coat (silane) treating compound,
Second step: produce rubber grain
The rubber of waste tire is cut into particulate state,
The 3rd step: produce rubble
The mixture of basalt stone, granite or two kinds of rocks is broken into particulate state with jaw crusher or roller crusher,
The 4th step: heated asphalt
Asphalt heating is melted into emulsus,
The 5th step: produce breeze
Ore reduction is become to particulate state with jaw crusher or roller crusher,
The 6th step: mix
In agitator, above-mentioned substance is mixed according to following weight proportion:
Pitch: 15% ~ 32%
Rubble: 8% ~ 14%
Rubber grain: 9% ~ 14%
Basalt fibre: 45% ~ 64%
Breeze: 4% ~ 7%.
2. a kind of asphalt according to claim 1, is characterized in that: the granularity of described rubble is 3mm ~ 12mm, and rubber grain granularity is 1mm ~ 3mm, and basalt fibre is basalt fibre staple fibre, and the granularity of described breeze is 0.5mm ~ 1.2mm.
3. a kind of asphalt according to claim 1 and 2, is characterized in that: described rubble is the mixture of basalt stone, granite or two kinds of rocks.
4. a kind of asphalt according to claim 1 and 2, is characterized in that: described rubber grain is to make with waste tire.
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| CN105776960A (en) * | 2016-04-22 | 2016-07-20 | 四川航天五源复合材料有限公司 | Preparation process for asphalt mixture |
| CN105776959A (en) * | 2016-04-22 | 2016-07-20 | 四川航天五源复合材料有限公司 | Preparation process for asphalt mixture pavement |
| CN106186838A (en) * | 2016-07-15 | 2016-12-07 | 黑龙江省中信路桥材料有限公司 | A kind of rubber asphalt Matrix mixing material exempting from lignin |
| CN106242375A (en) * | 2016-07-12 | 2016-12-21 | 王雅露 | A kind of anti-chap bituminous concrete |
| CN108280303A (en) * | 2018-01-30 | 2018-07-13 | 南京林业大学 | pitch data processing method and device |
| CN109912236A (en) * | 2019-04-01 | 2019-06-21 | 四川省玻纤集团有限公司 | It is a kind of for pultrusion, wind basalt fibre size |
| CN110550886A (en) * | 2019-09-21 | 2019-12-10 | 扬州市建筑设计研究院有限公司 | anti-rutting asphalt mixture and preparation method thereof |
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