CN107056138A - A kind of modified asphalt mixture - Google Patents
A kind of modified asphalt mixture Download PDFInfo
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- CN107056138A CN107056138A CN201710049482.3A CN201710049482A CN107056138A CN 107056138 A CN107056138 A CN 107056138A CN 201710049482 A CN201710049482 A CN 201710049482A CN 107056138 A CN107056138 A CN 107056138A
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- modified asphalt
- asphalt mixture
- pitch
- modified
- additive
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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
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L95/00—Compositions of bituminous materials, e.g. asphalt, tar, pitch
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2205/00—Polymer mixtures characterised by other features
- C08L2205/03—Polymer mixtures characterised by other features containing three or more polymers in a blend
- C08L2205/035—Polymer mixtures characterised by other features containing three or more polymers in a blend containing four or more polymers in a blend
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Ceramic Engineering (AREA)
- Materials Engineering (AREA)
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- Health & Medical Sciences (AREA)
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- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
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- Road Paving Structures (AREA)
Abstract
The present invention discloses a kind of modified asphalt mixture, is related to chemical field, including matrix pitch, gathers materials and miberal powder, and solid-state SBS modified asphalt mixture modifying agent；Wherein, fine and close film can be formed with miberal powder surface gathering materials after the solid-state SBS modified asphalt mixture modifying agent dissolves；Its addition is the 5wt% 25wt% of matrix pitch.The modified asphalt mixture anti-strip ability that the present invention is provided is strong, prepares simply, with low cost.
Description
Technical field
The present invention relates to chemical field, more particularly to a kind of solid-state SBS modified asphalt modifiers and preparation method thereof
Background technology
SBS modified pitch is, using matrix pitch as raw material, to add a certain proportion of SBS modifier, passes through shearing, stirring etc.
Method makes SBS be homogeneously dispersed in pitch, meanwhile, a certain proportion of exclusive stabilizer is added, SBS intermingling materials, profit is formed
Modification is done to pitch with physical property good SBS.
At present, the use of modified pitch is to solve the problems such as asphalt surface course height temperature stability drawn game portion is damaged from basic
Main Means.But when processing SBS modified bitumen products in the prior art, it is general using wet method addition, i.e., first pitch is carried out
It is modified, then recycle modified pitch to prepare modified asphalt mixture, therefore need to provide processing SBS modification drips in the prior art
Thermal source and hot environment needed for blue or green processing modified device and process, prevent processed finished products in transportation or non-fortune
The special insulated and stirred device isolated during defeated.It can be seen that, used in existing wet processing modified asphalt mixture
SBS modified pitch easily isolates, preserve requirement and cost is higher, and transportation range is limited, general no more than 500km, storage
Deposit temperature and cannot be below 160 DEG C.
Additionally, it is also well known that the adhesiveness of acid stone and SBS modified pitch is not strong, in order to reach preferable technology effect
Really, nonacid building stones should be used, it is seen then that existing wet method prepares asphalt and also there is building stones requirement height, limits stone
The technical problem in the source of material, the problem can cause building stones transport costliness, and what non-acid local building stones can not be utilized effectively shows
As.
The content of the invention
In order to solve the above-mentioned problems in the prior art, the present invention provides a kind of without being modified drip using wet method
Solid-state SBS modified asphalt mixture modifying agent prepared by blue or green compound and preparation method thereof, the solid-state SBS that the present invention is provided is modified
Asphalt mixed material modifier, which can be directly added into mixing building, to be mixed to prepare modified pitch with matrix pitch and the miberal powder that gathers materials and mixes
Material, it is to avoid processing modified device, thermal source and high temperature bar the need for SBS modified pitch prepared by existing wet method addition is present
Part, prevent special insulated and stirred device that processed finished products isolate, can not long term storage the shortcomings of, moreover, the present invention is provided
Modifying agent add mixing building in can melt rapidly, stone surface formation one layer of fine and close film, make SBS modified pitch
Fusion is contacted with the nonacid surface of building stones, the acid stone technical problem poor with the adhesiveness of SBS modified pitch is solved.
To realize the technical purpose of the present invention, one aspect of the present invention provides a kind of SBS modified asphalt mixtures, including matrix
Pitch, gather materials and miberal powder, in addition to solid-state SBS modified asphalt modifiers；
Wherein, it can be caused after the solid-state SBS modified asphalt mixture modifying agent dissolves gathering materials to be formed with miberal powder surface
Close film, the anti-strip ability for improving modified asphalt mixture；
Wherein, the addition of the solid-state SBS modified asphalt mixture modifying agent is the 5-25% of matrix pitch weight.
It is preferred that, the addition of the solid-state SBS modified asphalt mixture modifying agent is the 10- of matrix pitch weight
20%.
Particularly, the solid-state SBS modified asphalt mixtures modifying agent can form one layer of bag gathering materials with miberal powder surface
Overlay film, so as to change the acid-base property of asphalt and aggregate and miberal powder contact surface.
Wherein, the matrix pitch, gather materials with miberal powder according to national communication portion《Asphalt highway construction technology is advised
Model》(JTGF40-2004) proportion design is carried out.
Wherein, the solid-state SBS modified asphalt modifiers include：
Modification containing high-quality pitch is expected substantially；
Being used for containing calcium propionate and sulphur sodium aluminate increases the first additive of ductility and viscosity；And
The Second addition for being used to be crosslinked containing sodium lignin sulfonate and carbon black；
Wherein, the modification expects also to include caoutchouc resin and synthetic rubber substantially.
Wherein, first additive also includes：Sodium thiosulfate, triethanolamine, aluminium chloride, butyl stearic acid, fiber
Element, polycyclic aromatic hydrocarbon sodium sulfonate, acrylic copolymer.
Wherein, the Second addition also includes resin.
Wherein, the modification is expected substantially, the weight of the first additive and Second addition is：
Modified basic material 71-107；
First additive 18.5-38；
Second addition 6.5-13.5.
Wherein, the modification in expecting substantially the weight of high-quality pitch, caoutchouc resin and synthetic rubber be：
High-quality pitch 55-85；
Caoutchouc latex 8-11；
Synthetic rubber 8-11.
Wherein, in first additive sodium thiosulfate, triethanolamine, aluminium chloride, butyl stearic acid, cellulose,
Polycyclic aromatic hydrocarbon sodium sulfonate, acrylic copolymer weight are：
Wherein, in the Second addition weight of sodium lignin sulfonate, resin and carbon black is：
Sodium lignin sulfonate 3-6；
Resin 3-6；
Carbon black 0.5-1.5.
Wherein, the SBS modified asphalt mixtures are prepared in accordance with the following methods：
By the matrix pitch, gather materials with miberal powder according to national communication portion《Standard specification for construction and acceptance of highway asphalt pavement》
(JTGF40-2004) proportion design is carried out, is produced after adding the mixing of solid-state SBS modified asphalt modifiers, heating mix.
Wherein, heating-up temperature is 100-180 DEG C, preferably preferably 100-120 DEG C, 170-180 DEG C.
Wherein, a length of 30-50s, preferably 30-40s during mix.
To realize the technical purpose of the present invention, further aspect of the present invention provides a kind of solid-state SBS modified asphalt mixtures and changed
Property agent, its dissolve after can stone surface formation film, including：
Modification containing high-quality pitch is expected substantially；
Being used for containing calcium propionate and sulphur sodium aluminate increases the first additive of ductility and viscosity；And
The Second addition for being used to be crosslinked containing sodium lignin sulfonate and carbon black.
Wherein, antistripping agent is free of in first additive and the second addition.
Especially, the modification expects also to include caoutchouc resin and synthetic rubber substantially；
Wherein, the high-quality pitch is the pitch that its asphalt content is higher than plain asphalt studies on asphaltene content.
It is preferred that, the asphalt content in the high-quality pitch is higher than more than 80%.
Wherein, first additive also includes：Sodium thiosulfate, triethanolamine, aluminium chloride, butyl stearic acid, fiber
Element, polycyclic aromatic hydrocarbon sodium sulfonate, acrylic copolymer.
Wherein, the Second addition also includes resin.
Wherein, the modification is expected substantially, the weight of the first additive and Second addition is：
Modified basic material 71-107；
First additive 18.5-38；
Second addition 6.5-13.5.
Wherein, the modification in expecting substantially the weight of high-quality pitch, caoutchouc resin and synthetic rubber be：
High-quality pitch 55-85；
Caoutchouc latex 8-11；
Synthetic rubber 8-11.
Wherein, in first additive sodium thiosulfate, triethanolamine, aluminium chloride, butyl stearic acid, cellulose,
Polycyclic aromatic hydrocarbon sodium sulfonate, acrylic copolymer weight are：
Wherein, in the Second addition weight of sodium lignin sulfonate, resin and carbon black is：
Sodium lignin sulfonate 3-6；
Resin 3-6；
Carbon black 0.5-1.5.
To realize the technical purpose of the present invention, further aspect of the present invention provides a kind of solid-state SBS modified asphalt mixtures and changed
The preparation method of property agent, including：
Modification including high-quality pitch is expected substantially and being used for including calcium propionate and sulphur sodium aluminate increases ductility and viscosity
The first additive mixing, carry out first heat and the first isothermal holding, obtain being sufficiently mixed uniform first mixture；
The Second addition for being used to be crosslinked including sodium lignin sulfonate and carbon black is added in the first mixture, carried out
Second heats and the second isothermal holding, obtains the second mixture；
After second mixture is dried, the SBS modifier of solid-state is obtained.
Wherein, the modification expects also to include caoutchouc resin and synthetic rubber substantially.
Wherein, first additive also includes sodium thiosulfate, triethanolamine, aluminium chloride, butyl stearic acid, fiber
Element, polycyclic aromatic hydrocarbon sodium sulfonate, acrylic copolymer.
Wherein, the Second addition also includes resin.
Wherein, the described first temperature heated is 175-180 DEG C, and processing time is 30min.
Wherein, the time of first isothermal holding is 40min.
Wherein, the described second temperature heated is 170-180 DEG C, and processing time is 20-30min.
Wherein, the time of second isothermal holding is 15-30min.
Wherein, the modification is expected substantially, the weight of the first additive and Second addition is：
Modified basic material 71-107；
First additive 18.5-38；
Second addition 6.5-13.5.
Beneficial effects of the present invention：
1st, the anti-strip ability for the modified asphalt mixture that the present invention is provided is strong, and cost is low, prepares simple.
2nd, the SBS modifier that provides of the present invention is solid state product, direct plungeed into when using in mixing building with compound one
Play mix and can be obtained by modified pitch or modified asphalt mixture, and maintain asphalt original processing and follow-up stand
The traditional handicraft such as spread, roll constant.
3rd, it is direct putting type, easy construction that the present invention, which provides SBS modifier solid state product, cost is saved, relative to existing
Modified pitch factory-modified or situ modified wet method in technology use technique, and process equipment, SBS are modified without being equipped with SBS
The costs such as modified pitch personnel, hold facility place, power fuel energy resource consumption and process time, are that construction work unit is brought
Great convenience, is truly realized material and is walked with project, energy-conserving and environment-protective, remarkable in economical benefits.
4th, the solid-state SBS modifier shipping storage that the present invention is provided is convenient, it is not necessary to which special insulation is closed groove and loaded, and is more not required to
The continuous insulated and stirred to be carried out in transportation in order to prevent segregation phenomenon, can still keep SBS to be modified
The quality of pitch, especially, SBS modifier solid state product asphalt mixed material modifier of the invention are that several millimeters of brown is consolidated
Body little particle, nontoxic, stable in physicochemical property, mono- bag of papery valve bag packaging of 25Kg can meet various forms of transport, no
Influenceed by road, can indefinite duration long-time storage, ready access upon use.Therefore the solid-state SBS modifier that the present invention is provided is solved
In the prior art using the radius of SBS modifier no more than 500km, storage is general no more than 24 hours, and storage temperature is not
160 DEG C of technical problem can be less than.
5th, the solid-state SBS modifier that the present invention is provided is extensive to the selectivity of building stones, the mixing of SBS modifier solid state pitch
Expect that modifying agent in mixing building, can rapidly melt, uniformly wrap up in and be attached on building stones, building stones have been completely cut off in advance and have been dripped with follow-up matrix
Blue or green contact, the adhesiveness for solving building stones acid-base property for pitch influences.It is well known that acid stone and SBS modified pitch
Adhesiveness it is not strong, and because building stones transport expensive, all can preferentially use local building stones.So, solve the acid-base property of building stones
Problem just solves the Cost Problems of building stones, also just further solves the problems, such as the material source of project.
6th, the matrix pitch for the alternative equivalent of solid SBS modifier that the present invention is provided, saves pitch input cost.
Embodiment
In order to be more clearly understood that the above objects, features and advantages of the present invention, with reference to embodiment
The present invention is further described in detail.
Many concrete details are elaborated in the following description to facilitate a thorough understanding of the present invention, still, the present invention is also
It can be different from other modes described here to implement using other, therefore, the present invention is not limited to following public specific
The limitation of embodiment.
Pitch used in the present invention is 70# matrix pitches, is provided, met by Qinhuangdao petrochina dyestuff pitch Co., Ltd
JTG F40-2004《Ministry of Communications's bi tumenf orr oad technical requirements》70#, 90# or 110# road asphalt be applied to this hair
It is bright.
Embodiment 1
1st, proportioning is got the raw materials ready
Modified basic material, the first additive and Second addition are got the raw materials ready according to following weight part ratio：High-quality pitch 55；My god
Right elastomer latex 11；Synthetic rubber 11；Sodium thiosulfate 3.5；Triethanolamine 5；Calcium propionate 2；Aluminium chloride 3；Butyl stearic acid
3.5；Cellulose 2；Polycyclic aromatic hydrocarbon sodium sulfonate 1.5；Acrylic copolymer 3.5；Sulphur sodium aluminate 3；Sodium lignin sulfonate 3；Resin 3；
Carbon black 1.5.
2nd, pre-add is heat-treated
By the high-quality pitch after weighing, caoutchouc latex, synthetic rubber, sodium thiosulfate, triethanolamine, calcium propionate,
Aluminium chloride, cellulose, polycyclic aromatic hydrocarbon sodium sulfonate, acrylic copolymer, sulphur sodium aluminate, butyl stearic acid are added to pre-heating reaction
In kettle, by pre-heating reactor heating heating 30 minutes, the mass temperature in reactor is set to reach 175-180 DEG C, Ran Houbao
Temperature 40 minutes, makes the material in reactor be sufficiently mixed uniformly, obtains the first mixture.
3rd, heat
Sodium lignin sulfonate, resin, carbon black are added into the reactor for fill mixture and carries out Hybrid Heating 20 minutes, is made
Mass temperature in reactor is maintained at 170-180 DEG C, material therein is fully reacted, and continues to be incubated 15 minutes, is flowed
Denaturation and the mixture of liquid second of plasticity.
4th, granulate
The second mixture feeding comminutor of liquid is granulated, water removal drying is carried out after granulation, drying means is removed water
It can be entered using any progress of the prior art, such as forced air drying, the qualified product after quality inspection, feeding packing machine
Row packaging, obtains granular SBS modifier.Obtained SBS modifier solid state granule technology quality is as shown in table 1.
Embodiment 2
1st, proportioning is got the raw materials ready
Modified basic material, the first additive and Second addition are got the raw materials ready according to following weight part ratio：High-quality pitch 85；My god
Right elastomer latex 8；Synthetic rubber 8；Sodium thiosulfate 2.5；Triethanolamine 2；Calcium propionate 2；Aluminium chloride 6；Butyl stearic acid 2.5；
Cellulose 5；Polycyclic aromatic hydrocarbon sodium sulfonate 3.5；Acrylic copolymer 1.5；Sulphur sodium aluminate 1.5；Sodium lignin sulfonate 6；Resin 6；Charcoal
Black 0.5.
2nd, pre-add is heat-treated
By the high-quality pitch after weighing, caoutchouc latex, synthetic rubber, sodium thiosulfate, triethanolamine, calcium propionate,
Aluminium chloride, cellulose, polycyclic aromatic hydrocarbon sodium sulfonate, acrylic copolymer, sulphur sodium aluminate, butyl stearic acid are added to pre-heating reaction
In kettle, by pre-heating reactor heating heating 30 minutes, the mass temperature in reactor is set to reach 175-180 DEG C, Ran Houbao
Temperature 40 minutes, makes the material in reactor be sufficiently mixed uniformly, obtains the first mixture.
3rd, heat
Sodium lignin sulfonate, resin, carbon black are added into the reactor for fill mixture and carries out Hybrid Heating 30 minutes, is made
Mass temperature in reactor is maintained at 170-180 DEG C, material therein is fully reacted, and continues to be incubated 30 minutes, is flowed
Denaturation and the mixture of liquid second of plasticity.
4th, granulate
The second mixture feeding comminutor of liquid is granulated, water removal drying is carried out after granulation, drying means is removed water
It can be entered using any progress of the prior art, such as forced air drying, the qualified product after quality inspection, feeding packing machine
Row packaging, obtains granular SBS modifier.Obtained SBS modifier solid state granule technology quality is as shown in table 1.
Embodiment 3
1st, proportioning is got the raw materials ready
Modified basic material, the first additive and Second addition are got the raw materials ready according to following weight part ratio：High-quality pitch 62；My god
Right elastomer latex 9；Synthetic rubber 10；Sodium thiosulfate 3；Triethanolamine 3；Calcium propionate 3；Aluminium chloride 4；Butyl stearic acid 3；Fiber
Element 3；Polycyclic aromatic hydrocarbon sodium sulfonate 1.9；Acrylic copolymer 2.2；Sulphur sodium aluminate 2.3；Sodium lignin sulfonate 4.1；Resin 5.2；Charcoal
Black 0.9.
2nd, pre-add is heat-treated
By the high-quality pitch after weighing, caoutchouc latex, synthetic rubber, sodium thiosulfate, triethanolamine, calcium propionate,
Aluminium chloride, cellulose, polycyclic aromatic hydrocarbon sodium sulfonate, acrylic copolymer, sulphur sodium aluminate, butyl stearic acid are added to pre-heating reaction
In kettle, by pre-heating reactor heating heating 25 minutes, the mass temperature in reactor is set to reach 175-180 DEG C, Ran Houbao
Temperature 40 minutes, makes the material in reactor be sufficiently mixed uniformly, obtains the first mixture.
3rd, heat
Sodium lignin sulfonate, resin, carbon black are added into the reactor for fill mixture and carries out Hybrid Heating 25 minutes, is made
Mass temperature in reactor is maintained at 170-180 DEG C, material therein is fully reacted, and continues to be incubated 20-30 minutes, obtains
The mixture of liquid second of rheological characteristic and plasticity.
4th, granulate
The second mixture feeding comminutor of liquid is granulated, water removal drying is carried out after granulation, drying means is removed water
It can be entered using any progress of the prior art, such as forced air drying, the qualified product after quality inspection, feeding packing machine
Row packaging, obtains granular SBS modifier.Obtained SBS modifier solid state granule technology quality is as shown in table 1：
The preparation of the solid state modification agent of embodiment 4
1st, proportioning is got the raw materials ready
Modified basic material, the first additive and Second addition are got the raw materials ready according to following weight part ratio：High-quality pitch 73；My god
Right elastomer latex 10.4；Synthetic rubber 9.7；Sodium thiosulfate 3.2；Triethanolamine 4.6；Calcium propionate 2.6；Aluminium chloride 4.5；Butyl
Stearic acid 3.1；Cellulose 4.6；Polycyclic aromatic hydrocarbon sodium sulfonate 2.8；Acrylic copolymer 3.1；Sulphur sodium aluminate 2.4；Lignin sulfonic acid
Sodium 5.3；Resin 5.2；Carbon black 1.2.
2nd, pre-add is heat-treated
By the high-quality pitch after weighing, caoutchouc latex, synthetic rubber, sodium thiosulfate, triethanolamine, calcium propionate,
Aluminium chloride, cellulose, polycyclic aromatic hydrocarbon sodium sulfonate, acrylic copolymer, sulphur sodium aluminate, butyl stearic acid are added to pre-heating reaction
In kettle, by pre-heating reactor heating heating 30 minutes, the mass temperature in reactor is set to reach 175-180 DEG C, Ran Houbao
Temperature 40 minutes, makes the material in reactor be sufficiently mixed uniformly, obtains the first mixture.
3rd, heat
Sodium lignin sulfonate, resin, carbon black are added into the reactor for fill mixture and carries out Hybrid Heating 22 minutes, is made
Mass temperature in reactor is maintained at 170-180 DEG C, material therein is fully reacted, and continues to be incubated 26 minutes, is flowed
Denaturation and the mixture of liquid second of plasticity.
4th, granulate
The second mixture feeding comminutor of liquid is granulated, water removal drying is carried out after granulation, drying means is removed water
Can be using any progress of the prior art, including but not limited to forced air drying, qualified product, send after quality inspection
Enter packing machine to be packed, obtain granular SBS modifier.Obtained SBS modifier solid state granule technology quality such as table 1
It is shown：
The SBS modifier solid state granule technology quality of table 1
Wherein, outward appearance is determined using photoelectric detector, and granularity is determined using 6-8mm sieve methods, and proportion uses GB/
T1033.1-2008 standards are measured, and water content is determined by difference assay, and cone penetration uses GB/T269-91 standard tests, soft
Change point and use GB/T4507-2014 standard tests.
It can be seen from the measurement result of table 1, solid-state SBS modifier prepared by the present invention meets the requirements, and can be used as SBS
The modifying agent of modified asphalt mixture.
The preparation of the asphalt of embodiment 5
Raw material uses level to match somebody with somebody for AC-16 types, 70# matrix pitches, and pitch and mineral aggregate are calculated for 4.6% according to bitumen aggregate ratio
The consumption of (gathering materials and miberal powder), mineral aggregate 100kg, heating-up temperature is 180 DEG C, duration of mixing is 30s, and 170-180 DEG C is hit real temperature
Degree, experimental basis《JTG E20-2011 highway engineerings pitches and Asphalt Mixture Experiment code》Detection, the addition of modifying agent
To account for matrix pitch 0,10wt%, 15wt%, 20wt%, 25wt% materials ratio respectively, five kinds of adding proportion institute mixs
Different Asphalt Mixture testing results are as shown in table 2：
The pavement performance measurement result of table 2
In table 2, LM-0 represents the usage ratio that tret is 0, and LM-15 represents the usage ratio that tret is 15, and LM-20 is represented
Tret is 20 usage ratio.
It can be seen from the measurement result shown in table 2, the compound of above-mentioned five kinds of modifying agent additions reaches JTGF40-
2004《Standard specification for construction and acceptance of highway asphalt pavement》Requirement, especially when the addition of modifying agent gradually increases, performance is more
It is good, moreover, when the consumption of the modifying agent of the application is protobitumen consumption (the theoretical pitch use calculated according to bitumen aggregate ratio 4.6%
Amount) 10%, 70# asphalt contents be protobitumen consumption 90.1wt%.The asphalt prepared on this condition, is saved
9.9wt% asphalt content；When the consumption of the modifying agent of the application (calculates for protobitumen consumption according to bitumen aggregate ratio 5.0%
Theoretical asphalt content) 15%, 70# asphalt contents be protobitumen consumption 87.0wt%.The pitch prepared on this condition is mixed
Material is closed, 13wt% asphalt content has been saved；When the application modifying agent consumption for protobitumen consumption (according to bitumen aggregate ratio
The 5.0% theoretical asphalt content calculated) 20wt%, 70# asphalt contents be protobitumen consumption 83.3wt%.In this condition
The asphalt of lower preparation, has saved 16.7wt% asphalt content；When the consumption of the modifying agent of the application is used for protobitumen
The 25wt% of (the theoretical asphalt content calculated according to bitumen aggregate ratio 5.0%) is measured, 70# asphalt contents are protobitumen consumption
80wt%.The asphalt prepared on this condition, has saved 20wt% asphalt content.
It can be seen that, the modifying agent provided using the present invention can reduce the consumption of matrix pitch, reach as high as 20wt%.
The preparation of the asphalt of embodiment 5
With the AC13 grades of Red Sandstones matched somebody with somebody (acidity) to gather materials, according to the asphalt component in I-C grades of SBS modified asphalt mixtures
And its 4.7% bitumen aggregate ratio prepare asphalt, and add the solid-state SBS modified asphalt mixture modifying agent that the present invention is provided,
Addition is the 25% of matrix pitch content, heating-up temperature and the operation bar of duration of mixing and I-C grades of SBS modified asphalt mixtures
Part is consistent, is that heating-up temperature is 185 DEG C, and duration of mixing is 40s, 180 DEG C of compaction temperature, and the LM-S prepared in table 3 changes
Property, by its with I-C grades of SBS modified asphalt mixtures according to《JTG E20-2011 highway engineerings pitches and Asphalt Mixture Experiment
Code》Its pavement performance is detected, measurement result as shown in table 3 is obtained：
The pavement performance measurement result of table 3
Measurement result as shown in table 3 is understood, adds asphalt made from the solid SBS modifier of the present invention full
Sufficient JTG F40-2004《Standard specification for construction and acceptance of highway asphalt pavement》Requirement, and than I-C grades SBS of properties are modified
Height, especially dynamic stability reach 5537 times/mm.
Also, it can also be seen that the solid-state SBS modified asphalt mixture modifying agent that the present invention is provided from the data in table 3
The soda acid sex chromosome mosaicism of building stones can be solved, the preparation for being modified asphalt even with acidity aggregate not only conforms to JTG
F40-2004《Standard specification for construction and acceptance of highway asphalt pavement》Requirement, and its Pavement Performance is mixed higher than I-C grade SBS modified pitch
Close material.
Embodiment 6
Using 70# pitches, AC-20 limestone as the asphalt for the miberal powder that gathers materials and the SBS modifier solid-state of the application
Change asphalt mixed material modifier and prepare modified asphalt mixture, oil ratio is 4.7%, and modifying agent addition is the weight of 70# pitches
The 15% of amount, heating-up temperature is 170 DEG C, duration of mixing 50s, and 175 DEG C of compaction temperature is made with compound prepared by 70# matrix pitches
Contrast, carries out Pavement Performance detection, obtains testing result as shown in table 4, wherein, it is modified and is dripped using the solid-state SBS of the application
The oil for the asphalt that asphalt prepared by blue or green mixed material modifier is prepared with 70# matrix pitches when operating condition
It is identical.
The pavement performance measurement result of table 4
It can be seen from the measurement result of table 4, the asphalt (LM-S i.e. shown in table prepared using the inventive method
It is modified) each performance be above 70# matrix pitch compounds, and the dynamic stability of LM-S modified asphalt mixtures reaches
7537 times/mm, be 3 times of 70# matrix pitch compounds.
Embodiment 7
On the south Guangdong 70# pitches, GAC-16C limestone be the gather materials asphalt of miberal powder, and the solid-state that the present invention is provided
SBS modified asphalt mixture modifying agent prepares asphalt, and oil ratio is 4.7%, and modifying agent addition is the weight of 70# pitches
The 15% of amount, heating-up temperature is 170 DEG C, duration of mixing 30s, and 180 DEG C of compaction temperature changes with 70# matrix pitch compounds and SBS
Property pitch compare, carry out Pavement Performance detection, specific testing result as shown in table 5, wherein, 70# matrix pitch compounds and
SBS modified pitch prepares the operating condition of asphalt, oil than identical with the modifying agent provided using invention.
The pavement performance measurement result of table 5
| Mix type | 70# matrix | SBS is modified | LM-S |
| Soak Marshall residual stability (%) | 84.3 | 90.1 | 87.9 |
| Freeze-thaw split strength ratio TSR (%) | 98 | 90.6 | 93.4 |
| Dynamic stability (secondary/mm) | 1378 | 6295 | 6812 |
It can be seen from the result of table 5, Asphalt Mixture Performance and 70# matrix prepared by modifying agent is provided using the present invention
Asphalt and SBS modified pitch are suitable, and its dynamic stability is far above 70# matrix pitch compounds.
Embodiment 8
It is that the asphalt for the miberal powder that gathers materials and the solid-state SBS of the present invention are modified using high richness 70# pitches, AC-13 limestone
Asphalt mixed material modifier prepares asphalt, and oil ratio is 4.6%, and modifying agent addition is the weight of 70# pitches
15%, heating-up temperature is 180 DEG C, duration of mixing 30s, and compaction temperature is 180 DEG C, and other conditions are with reference to JTG F40-2004
《Standard specification for construction and acceptance of highway asphalt pavement》Requirement carry out, compared with 70# matrix pitch compounds and SBS modified pitch,
Pavement Performance detection is carried out, the result measured is as shown in table 6, wherein, 70# matrix pitch compounds and SBS modified pitch and profit
When operating condition is consistent for the oil of the asphalt prepared with the modifying agent of the present invention.
The pavement performance measurement result of table 6
| Mix type | 70# matrix | SBS is modified | LM-S is modified | Code requirement |
| Soak Marshall residual stability (%) | 96.4 | 92.6 | 97.5 | ≥85 |
| Freeze-thaw split strength ratio TSR (%) | 83.6 | 90.8 | 92.8 | ≥75 |
| Dynamic stability (secondary/mm) | 1803 | 4194 | 4724 | ≥2400 |
| Failure strain (μ ε) | 2895 | 2509 | 2588 | ≥2500 |
Wherein, the low temperature bend test temperature for determining failure strain is -10 DEG C, and loading speed is 50mm/min.
It can be seen from the measurement result shown in table 6, the solid-state SBS modified asphalt mixture modifying agent provided using the present invention
The asphalt and performance of preparation is identical with the asphalt that 70# matrix and SBS are modified, and some performance indications are even high
The asphalt being modified in 70# matrix and SBS.
Embodiment 9
SBS modifier solid state asphalt mixed material modifier is subjected to adhesiveness examination to granite (acidity) using water-boiling method
Test, specific method is as follows：
1st, experiment prepares
Granite is gathered materials with 13.2mm, 19mm (or round-hole mesh 15mm, 25mm) sieving, particle diameter 13.2-19mm (circular holes are taken
Sieve 15-25mm) shape gathers materials 5 close to cubical rule, is cleaned with clean water, put in the baking oven that temperature is (105 ± 5) DEG C
Drying, is then placed on standby in drier.And will be filled with water in large beaker, boiled on the asbestos gauge of juxtaposition heating furnace.
2nd, test procedure
It will gather materials and be fastened one by one with fine rule at middle part, then be placed in 1h in 105 DEG C of soil, 5 DEG C of baking ovens.Prepare matrix pitch and solid
State SBS modified asphalt mixture modifying agent samples.The mineral aggregate particle for taking out heating one by one is lifted with line, immerses pre-heated base
In matter pitch and solid-state SBS modified asphalt mixture modifying agent samples after 45s, gently take out, make aggregate particle completely pitch
Wrapped.The aggregate particle for wrapping pitch is hung on test stand, a scrap of paper is padded below, unnecessary modifying agent is poured off,
And 15min is cooled down at room temperature.After after aggregate particle cooling, lifted one by one with line, leaching people fills the large beaker center of boil water,
Heating furnace is adjusted, water in beaker is kept slight boiling condition, but is not allow for the foam that boils out.After digestion 3min, will gather materials from
Taken out in water, the peeling degree of pitch, evaluates its adhesiveness grade on observation mineral aggregate particle.
Through examining：Asphalt membrane preserves complete before and after aging, and peels off area is close to 0, and adhesiveness is 5 grades before and after aging.Can
See, the modifying agent using the present invention can make the preparation of asphalt be no longer limited by acid-base property and its source of mineral aggregate, nothing
The compositions such as antistripping agent need to be added into asphalt, and realize gathering materials on the spot for building stones, great amount of cost has been saved, has filled
Divide the building stones that make use of locality.
By the testing result of above example, we can clearly have found to utilize solid-state SBS modified asphalt mixtures
Compound made by modifying agent dry method (direct putting type), not only can modified asphalt mixture comprehensively, every road can be competent at
The requirement of road ability, while the pavement performance also than SBS modified asphalt mixture is high, has the ability to substitute SBS modification drips completely
It is blue or green.Moreover, using SBS modifier solid state asphalt mixed material modifier product, dry process, being more convenient, economic benefit is higher.
The preferred embodiments of the present invention are the foregoing is only, are not intended to limit the invention, for the skill of this area
For art personnel, the present invention can have various modifications and variations.Within the spirit and principles of the invention, that is made any repaiies
Change, equivalent substitution, improvement etc., should be included in protection scope of the present invention etc.
Claims (9)
1. a kind of modified asphalt mixture, including matrix pitch, gather materials and miberal powder, it is characterised in that be also modified including solid-state SBS
Asphalt mixed material modifier；
Wherein, densification can be formed with miberal powder surface gathering materials after the solid-state SBS modified asphalt mixture modifying agent dissolves
Film, the anti-strip ability for improving modified asphalt mixture；
Wherein, the 5wt%-25wt% added as matrix pitch of the solid-state SBS modified asphalt mixture agent.
2. modified asphalt mixture as claimed in claim 1, it is characterised in that including：
Modification containing high-quality pitch is expected substantially；
Being used for containing calcium propionate and sulphur sodium aluminate increases the first additive of ductility and viscosity；And
The Second addition for being used to be crosslinked containing sodium lignin sulfonate and carbon black；
Wherein, antistripping agent is free of in first additive and the second addition.
3. modified asphalt mixture as claimed in claim 1, it is characterised in that the modification expects also to include natural rubber substantially
Resin and synthetic rubber.
4. modified asphalt mixture as claimed in claim 1, it is characterised in that the additive I also includes：Thiosulfuric acid
Sodium, triethanolamine, aluminium chloride, butyl stearic acid, cellulose, polycyclic aromatic hydrocarbon sodium sulfonate, acrylic copolymer.
5. modified asphalt mixture as claimed in claim 1, it is characterised in that the additive II also includes resin.
6. modified asphalt mixture as claimed in claim 1, it is characterised in that the modification is expected substantially, the first additive and
The weight of Second addition is：
Modified basic material 71-107；
First additive 18.5-38；
Second addition 6.5-13.5.
7. modified asphalt mixture as claimed in claim 2, it is characterised in that the modification high-quality pitch, day in expecting substantially
So the weight of rubber resin and synthetic rubber is：
High-quality pitch 55-85；
Caoutchouc latex 8-11；
Synthetic rubber 8-11.
8. modified asphalt mixture as claimed in claim 3, it is characterised in that the thiosulfuric acid in first additive
Sodium, triethanolamine, aluminium chloride, butyl stearic acid, cellulose, polycyclic aromatic hydrocarbon sodium sulfonate, acrylic copolymer weight are：
9. modified asphalt mixture as claimed in claim 4, it is characterised in that the lignin sulfonic acid in the Second addition
The weight of sodium, resin and carbon black is：
Sodium lignin sulfonate 3-6；
Resin 3-6；
Carbon black 0.5-1.5.
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN108918838A (en) * | 2018-07-10 | 2018-11-30 | 上海理工大学 | A kind of water stability test method of emulsified asphalt fine sand mixture |
| CN109422483A (en) * | 2017-08-25 | 2019-03-05 | 山东路联交通材料有限公司 | A kind of road cracking repair materials and construction method |
| CN110937843A (en) * | 2019-12-24 | 2020-03-31 | 龚小琴 | Preparation process of concrete composite additive |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101104742A (en) * | 2007-08-23 | 2008-01-16 | 交通部公路科学研究院 | Rock asphalt composite modifier and its preparation method and use |
| CN105330202A (en) * | 2015-11-04 | 2016-02-17 | 同济大学 | Preparation method of modified asphalt mixture |
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2017
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Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101104742A (en) * | 2007-08-23 | 2008-01-16 | 交通部公路科学研究院 | Rock asphalt composite modifier and its preparation method and use |
| CN105330202A (en) * | 2015-11-04 | 2016-02-17 | 同济大学 | Preparation method of modified asphalt mixture |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109422483A (en) * | 2017-08-25 | 2019-03-05 | 山东路联交通材料有限公司 | A kind of road cracking repair materials and construction method |
| CN108918838A (en) * | 2018-07-10 | 2018-11-30 | 上海理工大学 | A kind of water stability test method of emulsified asphalt fine sand mixture |
| CN110937843A (en) * | 2019-12-24 | 2020-03-31 | 龚小琴 | Preparation process of concrete composite additive |
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