CN108947328A - A kind of Steel slag permeable asphalt mixture based on the modified high-viscosity asphalt of shoddy - Google Patents
A kind of Steel slag permeable asphalt mixture based on the modified high-viscosity asphalt of shoddy Download PDFInfo
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- CN108947328A CN108947328A CN201810835247.3A CN201810835247A CN108947328A CN 108947328 A CN108947328 A CN 108947328A CN 201810835247 A CN201810835247 A CN 201810835247A CN 108947328 A CN108947328 A CN 108947328A
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- steel slag
- shoddy
- asphalt
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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
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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
- C04B2111/00—Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
- C04B2111/00017—Aspects relating to the protection of the environment
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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
- 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
Abstract
The present invention is a kind of Steel slag permeable asphalt mixture based on the modified high-viscosity asphalt of shoddy, the mixture includes following raw material in parts by weight: 82~86 parts of steel slag coarse aggregate, 10~14 parts of basalt fine aggregate, 4 parts of limestone filler, modified 4.4~4.6 parts of the high-viscosity asphalt of shoddy.The present invention uses steel slag instead coarse aggregate, and adds the modified high-viscosity asphalt of shoddy, and the Steel slag permeable asphalt mixture porosity of preparation is met the requirements, and Marshall stability with higher and lesser Xie Lunbao leakage analysis losing and Ken Tebao disperse rate.
Description
Technical field
The present invention relates to asphalt roads fields, and in particular to highway structure field of material technology, in particular to one kind are based on
The Steel slag permeable asphalt mixture of the modified high-viscosity asphalt of shoddy.
Background technique
With the continuous development of China's economy, expressway construction cause also rapidly increases.And bituminous pavement is good because of it
Road-ability and the advantages that excellent service performance, construction speed fast, easy to maintenance, 90% express highway pavement structure
Form is all made of asphalt pavement structure form.In bituminous pavement built at present 90% or so design by close-graded principle and
At the category lesser dense-graded asphalt concrete road surface of voidage.The intensity on this road surface is higher, and water stabilizing, low temperature are anti-
Fragility energy, endurance quality are preferable, but water penetration is poor, so that rainwater largely collects in road surface, lead to urban transportation blocking and height
Speed driving is dangerous.Therefore, more and more scholar experts have carried out the research of asphalt paving extensively.Water permeability asphalt road
Face is a kind of porous structure
Extruded aggregate ecological, environmental protective road surface, road surface voidage are up to 18~25% or so, and internal structure is by a system
The internal porous structure being connected to of column forms skeleton, can satisfy the pavement structure of road intensity requirement and life requirement.It is permeable
Property concrete road surface have many advantages, such as to reduce noise, reduce rainwash, and improve the driving condition in rainy day and winter, effectively mention
High travel safety and comfort.
The problem of specific gravity to gather materials in asphalt reaches 90%~95%, thus causes is exactly the road of annual making
China's largely high-quality building stones are consumed, wherein more use is basalt and limestone.Wherein limestone belongs to sedimentary rock,
Its reserves is huge, and cheap, exploitation is simply.But pass through decades destructive exploitation, the lime in the most areas in China
Stone has become scarce resource.The overall reserves of China's limestone are about 75,000,000,000 tons, are merely capable of maintaining by current depletion rate
China's infrastructure demand at most 15 years.And steel slag is the slag being discharged in steelmaking process, is the primary solids pair of smelting industry
Product, the productivity of steel slag are about the 10%~15% of crude steel yield, and yield is very huge.Steel slag is taken as waste directly to throw
It abandons, a large amount of steel slag is piled into mountain, does not occupy large stretch of land resource, very big pollution is also caused to environment.Rubber powder
As a kind of rubber of chemical crosslinking, three-dimensional space network, complicated component, than generally common rubber are generated by chemical bond
(SBR, BR etc.) is more difficult to be swollen in pitch, thus causes the storage stability of waste rubber powder modified asphalt poor, and modified effect is limited,
Therefore modified critical issue is how to be dissolved in shoddy effectively in pitch, and can stablize storage.
Summary of the invention
In order to overcome the disadvantages of the above prior art, it is modified high viscous based on shoddy that the purpose of the present invention is to provide one kind
The Steel slag permeable asphalt mixture of pitch, using steel slag instead coarse aggregate, fine aggregate uses basalt, and it is modified to add shoddy
High-viscosity asphalt, the Steel slag permeable asphalt mixture porosity of preparation meet the requirements (Steel slag permeable asphalt mixture sky of the invention
Gap rate is larger, 20%) average void fraction can reach, and Marshall stability with higher and lesser Xie Lunbao leakage analysis losing
With Superpave mix-design rate.
To achieve the goals above, the technical solution adopted by the present invention is that:
A kind of Steel slag permeable asphalt mixture based on the modified high-viscosity asphalt of shoddy, the mixture includes according to weight
The following raw material of part meter, 82~86 parts of steel slag coarse aggregate, 10~14 parts of basalt aggregate, 4 parts of limestone filler, shoddy is modified
4.4~4.6 parts of high-viscosity asphalt；
The modified high-viscosity asphalt of the shoddy is that bi tumenf orr oad is heated to 180~190 DEG C, adds shoddy, height
Viscosity additive, dispersing agent, stabilizer are put into development in baking oven and obtain after shearing.
The asphalt is 70# bi tumenf orr oad, and the shoddy additive amount is the 18- of bi tumenf orr oad weight
22%, the high viscosity additive additive amount is the 7.5%-8.5% of bi tumenf orr oad pitch weight, the dispersing agent addition
Amount is the 0.1-1% of bi tumenf orr oad weight, and the stabilizer additive amount is the 0.1-1% of bi tumenf orr oad weight.It is logical
The effect of excessively high mild long-term high speed shear is swollen matrix pitch sufficiently in the tridimensional network of shoddy.
The shear temperature is 180~190 DEG C, shear velocity 450-550r/min, shear time 25-35min；It is described
Developmental condition are as follows: developmental temperature is 175-185 DEG C, develops 28-32min.
Preferably, the high viscosity additive simple grain granular mass is less than 0.03g, relative density 0.93g/cm3, melting
Index is 1.8g/10min, and ash content is less than 2%.
The high viscosity additive adds to be sticked pitch and changes for TPS (Tafpack Super) high-viscosity asphalt additive or HVA high
Property agent or rubber-diatomite modified agent or styrene prepolymer and butadiene pre-polymer mixture modifying agent or combinations thereof.
The rubber-diatomite modified agent includes rubber, diatomite, aromatic naphtha, surfactant；With weight percentage
Meter, the rubber content are 85%-90%, and diatomite content is 5%-10%, and aromatic hydrocarbons oil content is 1%-3%, surface-active
Agent content is 0.1%-0.8%；
Styrene prepolymer and butadiene pre-polymer mixture modifying agent styrene prepolymer and butadiene prepolymer weight
Than for 2.5:1
Preferably, the stabilizer selects cumyl peroxide；The dispersing agent is sodium pyrophosphate and hexa metaphosphoric acid
Mixture of the sodium by weight 2:3.
Preferably, the scrap rubber powder fineness is 100~120 mesh, and water content is less than 5%, and the shoddy is by waste tire
It is made.The size of rubber powder size has large effect to the performance of modified pitch, and rubber powder is thinner, and it is easier to be swollen in pitch,
The rubber powder advantageous but meticulous to the ductility and needle penetration that improve modified pitch will be difficult to form skeleton structure in pitch, can make
The elasticity of pitch is restored to weaken, and easy flow deformation when the temperature rises.
Preferably, the steel slag coarse aggregate includes following components in parts by weight, and partial size is the steel of 4.75~9.5mm
36~44 parts of slag coarse aggregate, partial size is 38~50 parts of steel slag coarse aggregate of 9.5~16mm.
Preferably, the apparent relative density of the steel slag coarse aggregate is in 3.20~3.30g/cm3Between；Free calcium oxide contains
Amount is between 1.7~2.0%；120h cubical expansivity is impregnated in 60 DEG C of hot water is not more than 1.5%.
Preferably, the basalt aggregate includes following components in parts by weight, and partial size is the Black Warrior of 0~2.36mm
Rock gathers materials 10~14 parts, and partial size is 0.001-5 parts of basalt aggregate of 2.36~4.75mm.
The size distribution of the limestone filler is that 0~1 μm is 7.1%, and 1~10 μm is 39.0%, and 10~50 μm are
42.1%, 50~75 μm are 11.8%.
Preferably, the apparent relative density of the basalt aggregate is 2.86~2.87g/cm3；Clay content (is less than
0.075mm content) it is 2.4~2.5%.
Preferably, the shoddy is the 20% of the bi tumenf orr oad by weight percentage；The road petroleum
Pitch is 90# bi tumenf orr oad.
Compared with prior art, Steel slag permeable asphalt mixture provided by the invention uses steel slag instead coarse aggregate, uses
Basalt fine aggregate, and the modified high-viscosity asphalt of shoddy is added, reticular structure is formed in asphalt, is greatly reduced into
This, realizes the recycling of steel slag and shoddy, devises the preliminary examination gradation in three kinds of code requirements, analyze its porosity, horse
Whether Xie Er stability meets the requirement of highway in China Asphalt Pavement Construction Technique specification.In addition, the steel slag pervious asphalt is mixed
It closes material voidage and averagely reaches 20%, can quickly dredge road surface runoff, improve the safety of rainy day road surface running vehicle, and its Xie Lunbao
Leakage analysis losing and Ken Tebao rate of dispersing are smaller, have preferable integral strength and good endurance quality.The steel slag is saturating
Bituminous grout mixture enriches the application approach of steel slag and shoddy in bituminous pavement, reduce to natural high-quality building stones and
The demand of SBS modified pitch, is conducive to protection of geological environment, and the high added value for realizing trade waste recycles.
The invention has the advantages that:
1, the present invention uses steel slag instead coarse aggregate, and fine aggregate uses basalt, and adds the modified high-viscosity asphalt of shoddy,
The Steel slag permeable asphalt mixture porosity of preparation meet the requirements (Steel slag permeable asphalt mixture voidage of the invention is larger,
20%) average void fraction can reach, and Marshall stability with higher and lesser Xie Lunbao leakage analysis losing and Ken Tabao
It disperses rate, is a kind of extruded aggregate Ecosystem environmental protection material of porous structure, can quickly dredge road surface runoff, improve rainy day road surface
Travel safety.
2, the shoddy of certain content is added in matrix pitch, it is modified high viscous to prepare shoddy through high temperature and high speed shearing
Pitch, the modified high-viscosity asphalt of shoddy effectively degraded, that storage is stable, and be applied in porous asphalt pavement, system
Standby Steel slag permeable asphalt mixture voidage is big, and high temperature stability performance is excellent.
3, Steel slag permeable asphalt mixture provided by the invention uses steel slag instead coarse aggregate, using basalt fine aggregate,
And add the modified high-viscosity asphalt of shoddy, form reticular structure in asphalt, cost be greatly reduced, realize steel slag and
The recycling of shoddy devises the preliminary examination gradation in three kinds of code requirements, has studied voidage and mixes to steel slag pervious asphalt
The influence for expecting performance, by the comprehensive analysis of the influence factors such as voidage, stability to marshal piece determine its porosity,
Marshall stability meets the requirement of highway in China Asphalt Pavement Construction Technique specification.
4, the Xie Lunbao leakage analysis losing and Ken Tebao of the Steel slag permeable asphalt mixture disperse, and rate is smaller, this is illustrated
It is with preferable integral strength and good endurance quality.The Steel slag permeable asphalt mixture enriches steel slag and shoddy
Application approach in bituminous pavement reduces the demand to natural high-quality building stones and modified pitch, is conducive to protect geology ring
Border realizes the resource utilization of trade waste.
5, the size of rubber powder size has large effect to the performance of modified pitch, and rubber powder is thinner, is swollen and gets in pitch
It being easy, the rubber powder advantageous but meticulous to the ductility and needle penetration that improve modified pitch will be difficult to form skeleton structure in pitch,
The elasticity of pitch can be made to restore to weaken, and easy flow deformation when the temperature rises, comprehensively considered from economy and technical standpoint, rubber powder
Fineness is that 100~120 mesh are best.
6, the modified high-viscosity asphalt of the shoddy is made of shoddy and bi tumenf orr oad, passes through high temperature and long-term high speed
The effect of shearing is swollen matrix pitch sufficiently in the tridimensional network of shoddy.
7, the Steel slag permeable asphalt mixture enriches the application approach of steel slag and shoddy in bituminous pavement, reduces
Demand to natural high-quality building stones and SBS modified pitch, is conducive to protection of geological environment, and the height for realizing trade waste is attached
Value added recycling.
Specific embodiment
Combined with specific embodiments below, further details of elaboration is made to the present invention, but embodiments of the present invention are not
It is confined to the range of embodiment expression.These embodiments are merely to illustrate the present invention, range and is not intended to limit the present invention.This
Outside, after reading the contents of the present invention, those skilled in the art can various modifications may be made to invention, these equivalent variations are same
Fall within the appended claims limited range of the present invention.
Embodiment 1
Prepare the steel slag coarse aggregate of 4.75~9.5mm, each grain size specification of 9.5~16mm, 0~2.36mm, 2.36~
The basalt fine aggregate of 4.75mm commonly uses limestone filler.
It is that it is thick to weigh 4.75~9.5mm, the steel slag of 9.5~16mm partial size in terms of 100% by a marshal piece total weight
Gather materials respectively 44%, 38%, weighs 0~2.36mm, the basalt fine aggregate of 2.36~4.75mm is respectively 14%, 0%, and
It is mixed with 4% limestone filler, after drying to constant weight in 170 DEG C of baking ovens, is poured into mixing apparatus, and be added
The modified high-viscosity asphalt of 4.6% shoddy, evenly mixes 180s and obtains.
Above-mentioned steel slag is the converter hot splashing steel slag of Wuhan Iron and Steel Company's production, through water after being aged 1 year under field conditions (factors)
Mud flour mill grinding is made, and apparent relative density is in 3.20~3.30g/cm3Between, f-CaO content 1.7%~2.0% it
Between, 120h cubical expansivity, which is impregnated, in 60 DEG C of hot water is not more than 1.5%；The apparent relative density of basalt fine aggregate is 2.86
~2.87g/cm3Between, clay content (being less than 0.075mm content) is between 2.4~2.5%；The size distribution of limestone filler:
0~1 μm is 7.1%, and 1~10 μm is 39.0%, and 10~50 μm are 42.1%, and 50~75 μm are 11.8%；The shoddy changes
Property high-viscosity asphalt is that 70# bi tumenf orr oad is heated to 180~190 DEG C, according to pitch weight 20%, 8%, 0.5%,
0.5% dosage adds shoddy, high viscosity additive, dispersing agent, stabilizer thereto, in the high speed of 5000 turns/min of revolving speed
30min is persistently sheared under cutter, whole process temperature controls between 180~190 DEG C, cutter is closed, by modified pitch
It is put into 180 DEG C of baking ovens and develops 30min, can be obtained.
Wherein: the high viscosity additive adds as rubber-diatomite modified agent and styrene prepolymer and butadiene pre-polymerization
The agent of object mixture modification is combined according to the ratio that mass ratio is 3:5.
The rubber-diatomite modified agent includes rubber, diatomite, aromatic naphtha, surfactant；With weight percentage
Meter, the rubber content are 88%, and diatomite content is 8%, and aromatic hydrocarbons oil content is 4%, surface-active contents 0.6%；
Styrene prepolymer and butadiene pre-polymer mixture modifying agent styrene prepolymer and butadiene prepolymer weight
Than for 2.5:1.
The stabilizer selects cumyl peroxide；The dispersing agent be sodium pyrophosphate and calgon by weight
Mixture than 2:3.
Embodiment 2
Prepare the steel slag coarse aggregate of 4.75~9.5mm, 9.5~16mm grain size specification；0~2.36mm, 2.36~4.75mm
Basalt fine aggregate；Common limestone filler.
It is that it is thick to weigh 4.75~9.5mm, the steel slag of 9.5~16mm partial size in terms of 100% by a marshal piece total weight
Gather materials respectively 40%, 44%, weighs 0~2.36mm, the basalt fine aggregate of 2.36~4.75mm is respectively 12%, 0%, and
It is mixed with 4% limestone filler, after drying to constant weight in 170 DEG C of baking ovens, is poured into mixing apparatus, and be added
The modified high-viscosity asphalt of 5.5% shoddy, evenly mixes 180s and obtains.
Above-mentioned steel slag is the converter hot splashing steel slag of Wuhan Iron and Steel Company's production, through water after being aged 1 year under field conditions (factors)
Mud flour mill grinding is made, and apparent relative density is in 3.20~3.30g/cm3Between, f-CaO content 1.7%~2.0% it
Between, 120h cubical expansivity, which is impregnated, in 60 DEG C of hot water is not more than 1.5%；The apparent relative density of basalt fine aggregate is 2.86
~2.87g/cm3Between, clay content (being less than 0.075mm content) is between 2.4~2.5%；The size distribution of limestone filler:
0~1 μm is 7.1%, and 1~10 μm is 39.0%, and 10~50 μm are 47.6%, and 50~100 μm are 6.3%；The shoddy changes
Property high-viscosity asphalt is that 70# bi tumenf orr oad is heated to 180~190 DEG C, according to pitch weight 20%, 8%, 0.5%,
0.5% dosage adds shoddy, high viscosity additive, dispersing agent, stabilizer thereto, in the high speed of 5000 turns/min of revolving speed
30min is persistently sheared under cutter, whole process temperature controls between 180~190 DEG C, cutter is closed, by modified pitch
It is put into 180 DEG C of baking ovens and develops 30min, can be obtained.
Wherein: the high viscosity additive adds as rubber-diatomite modified agent and styrene prepolymer and butadiene pre-polymerization
The agent of object mixture modification is combined according to the ratio that mass ratio is 3:5.
The rubber-diatomite modified agent includes rubber, diatomite, aromatic naphtha, surfactant；With weight percentage
Meter, the rubber content are 88%, and diatomite content is 8%, and aromatic hydrocarbons oil content is 4%, surface-active contents 0.6%；
Styrene prepolymer and butadiene pre-polymer mixture modifying agent styrene prepolymer and butadiene prepolymer weight
Than for 2.5:1.
The stabilizer selects cumyl peroxide；The dispersing agent be sodium pyrophosphate and calgon by weight
Mixture than 2:3.
Embodiment 3
Prepare the steel slag coarse aggregate of 4.75~9.5mm, 9.5~16mm grain size specification, 0~2.36mm, 2.36~4.75mm
Basalt fine aggregate, commonly use limestone filler.
It is that it is thick to weigh 4.75~9.5mm, the steel slag of 9.5~16mm partial size in terms of 100% by a marshal piece total weight
Gather materials respectively 36%, 50%, weighs 0~2.36mm, the basalt fine aggregate of 2.36~4.75mm is respectively 10%, 0%, and
It is mixed with 4% limestone filler, after drying to constant weight in 170 DEG C of baking ovens, is poured into mixing apparatus, and be added
The modified high-viscosity asphalt of 5.2% shoddy, evenly mixes 180s and obtains.
Above-mentioned steel slag is the converter hot splashing steel slag of Wuhan Iron and Steel Company's production, through water after being aged 1 year under field conditions (factors)
Mud flour mill grinding is made, and apparent relative density is in 3.20~3.30g/cm3Between, f-CaO content 1.7%~2.0% it
Between, 120h cubical expansivity, which is impregnated, in 60 DEG C of hot water is not more than 1.5%；The apparent relative density of basalt fine aggregate is 2.86
~2.87g/cm3Between, clay content (being less than 0.075mm content) is between 2.4~2.5%；The size distribution of limestone filler:
0~1 μm is 7.1%, and 1~10 μm is 39.0%, and 10~50 μm are 47.6%, and 50~100 μm are 6.3%；The shoddy changes
Property high-viscosity asphalt is that 70# bi tumenf orr oad is heated to 180~190 DEG C, according to pitch weight 20%, 8%, 0.5%,
0.5% dosage adds shoddy and high viscosity additive, dispersing agent, stabilizer thereto, in the height of 5000 turns/min of revolving speed
30min is persistently sheared under fast cutter, whole process temperature controls between 180~190 DEG C, closes cutter, drips modified
Blueness, which is put into 180 DEG C of baking ovens, develops 30min, can be obtained.
Wherein: the high viscosity additive adds as rubber-diatomite modified agent and styrene prepolymer and butadiene pre-polymerization
The agent of object mixture modification is combined according to the ratio that mass ratio is 3:5.
The rubber-diatomite modified agent includes rubber, diatomite, aromatic naphtha, surfactant；With weight percentage
Meter, the rubber content are 87%, and diatomite content is 8%, and aromatic hydrocarbons oil content is 4.4%, and surface-active contents are
0.6%；
Styrene prepolymer and butadiene pre-polymer mixture modifying agent styrene prepolymer and butadiene prepolymer weight
Than for 2.5:1.
The stabilizer selects cumyl peroxide；The dispersing agent be sodium pyrophosphate and calgon by weight
Mixture than 2:3.
Embodiment 1, embodiment 2, the performance of the Steel slag permeable asphalt mixture prepared in embodiment 3 are shown in Table 1.
The performance of Steel slag permeable asphalt mixture prepared by embodiment 1,2,3 is shown in Table 1.
1 Steel slag permeable asphalt mixture performance of table
As shown in Table 1: the voidage for three kinds of Steel slag permeable asphalt mixtures that the present invention designs meets China's public affairs 20%
The requirement of road Asphalt Pavement Construction Technique specification can quickly dredge road surface runoff, improve the safety of rainy day road surface running vehicle；It is higher
Track stability and immersion residual degree all demonstrate its preferable high-temperature stability and water stability；The mixing of steel slag pervious asphalt
The Xie Lunbao leakage analysis losing and the Ken Tebao rate of dispersing of material are all satisfied domestic specification；Meanwhile with lower cubical expansivity, say
The abundant weathering in stacking process of this bright steel slag used, free calcium oxide content is less, make its dilatancy weaken, have compared with
Good integral strength and good endurance quality.
Embodiment 4
Other change the type and composition of high viscosity additive with embodiment 3, and specific difference is shown in Table 2.
The rubber-diatomite modified agent includes rubber, diatomite, aromatic naphtha, surfactant；With weight percentage
Meter, the rubber content are 87%, and diatomite content is 8%, and aromatic hydrocarbons oil content is 4.4%, and surface-active contents are
0.6%；
Styrene prepolymer and butadiene pre-polymer mixture modifying agent styrene prepolymer and butadiene prepolymer weight
Than for 2.5:1.
3 Steel slag permeable asphalt mixture performance of table
As shown in Table 2: high viscosity additive group becomes HVA high and sticks asphalt modifier: rubber-diatomite modified agent: benzene second
Alkene prepolymer is better than other mix according to the Pavement Performance that mass ratio is 3:3:5 with butadiene pre-polymer mixture modifying agent
The Pavement Performance of material.
Embodiment 5
High viscosity additive is formed with comparative example 7 in embodiment 4, and, with embodiment 3, difference is for other: the rubber-
Diatomite modified agent includes rubber, diatomite, aromatic naphtha, surfactant；With weight, the rubber content is
87%, diatomite content is 8%, and aromatic hydrocarbons oil content is 4.4%, surface-active contents 0.3%, konjaku glucan
0.24%, polyethylene glycol 0.06%.
4 Steel slag permeable asphalt mixture performance of table
As shown in Table 3: konjaku glucan being added in rubber-diatomite modified agent, konjaku glucan is mentioned in polyethylene glycol
Under the conditions of the weak base of confession, in heating process, irreversible gel will form, since konjaku glucan has macromolecule network knot
Structure is dissolved in shoddy effectively in pitch, realizes reconciliation to waste asphalt mixture basic component, is conducive between macromolecular
Interaction, improve asphalt performance, to improve Pavement Performance.
In conclusion Steel slag permeable asphalt mixture of the present invention has well solved the high-quality deficiency gathered materials, and sufficiently
The good characteristic for having played steel slag high rigidity, high-wearing feature, vehicle operation comfort level and travel safety can be improved, moreover it is possible to
The new breakthrough point that Comprehensive Utilization of Steel Slag utilizes is provided, environmental pollution caused by China is stacked because of steel slag is solved to a certain extent and asks
Topic is converted into high-quality asphalt concrete abrasion-resistant resource of gathering materials from solid waste for steel slag and opens vast vistas.It is simultaneously me
The problem of a large amount of waste tires of state are accumulated provides solution, alleviates the problem of high-quality modified pitch deficiency at this stage.
Claims (10)
1. a kind of Steel slag permeable asphalt mixture based on the modified high-viscosity asphalt of shoddy, it is characterised in that:
The mixture includes following raw material in parts by weight, and 82~86 parts of steel slag coarse aggregate, basalt aggregate 10~14
Part, 4 parts of limestone filler, modified 4.4~4.6 parts of the high-viscosity asphalt of shoddy；
The modified high-viscosity asphalt of the shoddy is that bi tumenf orr oad is heated to 180~190 DEG C, adds shoddy, high viscosity
Additive, dispersing agent, stabilizer are put into development in baking oven and obtain after shearing.
2. a kind of Steel slag permeable asphalt mixture based on the modified high-viscosity asphalt of shoddy according to claim 1, feature
It is,
The asphalt is 70# bi tumenf orr oad, and the shoddy additive amount is the 18-22% of bi tumenf orr oad weight,
The high viscosity additive additive amount is the 7.5%-8.5% of bi tumenf orr oad pitch weight, and the dispersing agent additive amount is road
The 0.1-1% of road asphalt weight, the stabilizer additive amount are the 0.1-1% of bi tumenf orr oad weight.
3. a kind of Steel slag permeable asphalt mixture based on the modified high-viscosity asphalt of shoddy according to claim 1, feature
It is,
The shear temperature is 180~190 DEG C, shear velocity 450-550r/min, shear time 25-35min；The development
Condition are as follows: developmental temperature is 175-185 DEG C, develops 28-32min.
4. a kind of Steel slag permeable asphalt mixture based on the modified high-viscosity asphalt of shoddy according to claim 1, feature
It is, the high viscosity additive simple grain granular mass is less than 0.03g, relative density 0.93g/cm3, melt index is
1.8g/10min ash content is less than 2%；The high viscosity additive adds to be sticked pitch and changes for TPS high-viscosity asphalt additive or HVA high
Property agent or rubber-diatomite modified agent or styrene prepolymer and butadiene pre-polymer mixture modifying agent or combinations thereof.
5. a kind of Steel slag permeable asphalt mixture based on the modified high-viscosity asphalt of shoddy according to claim 1, feature
It is, the stabilizer selects cumyl peroxide；The dispersing agent be sodium pyrophosphate and calgon by weight
The mixture of 2:3.
6. a kind of Steel slag permeable asphalt mixture based on the modified high-viscosity asphalt of shoddy according to claim 1, special
Sign is: the scrap rubber powder fineness is 100~120 mesh, and less than 5%, the shoddy is made water content by waste tire.
7. a kind of Steel slag permeable asphalt mixture based on the modified high-viscosity asphalt of shoddy according to claim 1, special
Sign is: the steel slag coarse aggregate includes following components in parts by weight, and partial size is the steel slag coarse aggregate of 4.75~9.5mm
36~44 parts, partial size is 38~50 parts of steel slag coarse aggregate of 9.5~16mm.
8. a kind of Steel slag permeable asphalt mixture based on the modified high-viscosity asphalt of shoddy according to claim 1, special
Sign is: the apparent relative density of the steel slag coarse aggregate is in 3.20~3.30g/cm3Between；Free calcium oxide content is 1.7
Between~2.0%；120h cubical expansivity is impregnated in 60 DEG C of hot water is not more than 1.5%.
9. a kind of Steel slag permeable asphalt mixture based on the modified high-viscosity asphalt of shoddy according to claim 1, special
Sign is: the basalt aggregate includes following components in parts by weight, and partial size is the basalt aggregate 10 of 0~2.36mm
~ 14 parts, partial size is 0.001-5 parts of basalt aggregate of 2.36~4.75mm；
The size distribution of the limestone filler is that 0~1 μm is 7.1%, and 1~10 μm is 39.0%, and 10~50 μm are 42.1%, 50
~75 μm are 11.8%.
10. a kind of Steel slag permeable asphalt mixture based on the modified high-viscosity asphalt of shoddy according to claim 1, special
Sign is: the apparent relative density of the basalt aggregate is 2.86~2.87g/cm3；Clay content is less than 0.075mm content
2.4~2.5%.
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| CN201810835247.3A CN108947328B (en) | 2018-07-26 | 2018-07-26 | Steel slag permeable asphalt mixture based on waste rubber powder modified high-viscosity asphalt |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810835247.3A CN108947328B (en) | 2018-07-26 | 2018-07-26 | Steel slag permeable asphalt mixture based on waste rubber powder modified high-viscosity asphalt |
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| CN108947328A true CN108947328A (en) | 2018-12-07 |
| CN108947328B CN108947328B (en) | 2021-03-23 |
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| CN109622571A (en) * | 2019-01-04 | 2019-04-16 | 葛洲坝武汉道路材料有限公司 | A kind of road pretreatment of slag method |
| CN111056770A (en) * | 2019-12-31 | 2020-04-24 | 江苏宝利路面材料技术有限公司 | Preparation method of asphalt mixture for low-temperature paved and high-weather-resistance drainage pavement |
| CN115521092A (en) * | 2022-10-21 | 2022-12-27 | 上海中冶环境工程科技有限公司 | Drainage asphalt mixture and preparation method thereof |
| CN116535137A (en) * | 2023-03-27 | 2023-08-04 | 东南大学 | Tunnel pavement mixture with porous steel slag loaded with nano flame retardant and construction method thereof |
| CN115521092B (en) * | 2022-10-21 | 2024-04-12 | 上海中冶环境工程科技有限公司 | Drainage asphalt mixture and preparation method thereof |
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