CN109294256A - A kind of rubber powder modified asphalt of highly anti-fatigue cracking resistance - Google Patents
A kind of rubber powder modified asphalt of highly anti-fatigue cracking resistance Download PDFInfo
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- CN109294256A CN109294256A CN201811224028.8A CN201811224028A CN109294256A CN 109294256 A CN109294256 A CN 109294256A CN 201811224028 A CN201811224028 A CN 201811224028A CN 109294256 A CN109294256 A CN 109294256A
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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
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K2201/00—Specific properties of additives
- C08K2201/014—Additives containing two or more different additives of the same subgroup in C08K
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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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Abstract
The invention belongs to modified asphalt technology fields, in particular to a kind of rubber powder modified asphalt of highly anti-fatigue cracking resistance, in parts by weight comprising following component: 10~30 parts of modified glue powder, 0.3~0.6 part of plasticizer, 60~90 parts and 2~5 parts of age resister of basic asphalt；The modified glue powder is made by the following method, and waste tyre rubber powder is completely immersed in glycerol, the sodium perborate of glycerol initial weight 3~6% is added, the particulate material of 30~60 mesh ground in a wetted condition after activation processing is modified glue powder.Modified glue powder and pitch have good binding ability, and rubber powder granule is not easy to be detached from from modified glue powder pitch, and the anti-softening of high temperature, low temperature crack resistence performance brilliance, can effectively extend Road Service Life.
Description
Technical field
The invention belongs to modified asphalt technology field, in particular to a kind of rubber powder modified asphalt of highly anti-fatigue cracking resistance.
Background technique
With the raising of constructing highway grade and the increasingly increase of the volume of traffic, more stringent requirements are proposed for road pavement function,
Pitch is modified using high molecular polymer or rubber have become road improvement pitch service performance effective way and
Developing direction.
Contain a variety of high molecular polymers and a large amount of carbon blacks, antioxygen such as butadiene-styrene rubber, natural rubber in waste tire
Agent, filler, processing oil etc., therefore, can be added in pitch, the product that mix obtains, referred to as after waste and old rubber particle
Rubber asphalt.Rubber powder is swollen in pitch, increases the cementability of pitch, and oil film thickness is bigger, rubber asphalt it is whole
Body performance is substantially better than matrix pitch.
But waste Crumb rubber belongs to inert material, vulcanized rubber powder it is less using group, with pitch when high temperature, long
Between shear action under, there are following deficiencies: 1, the bond strength of rubber powder granule and pitch is inadequate, rubber powder in the road of making
Grain is easy to remove from pitch, and road quality is poor, and service life is short；2, storage stability is very poor, unsuitable static storage.
Using SBS modified pitch as the polymer modified asphalt of representative have preferable high-temperature stability, low-temperature stability and
Anti-fatigue performance, SBS are the thermoplastic styrene butadiene rubbers artificial synthesized as raw material using petroleum, and 1 ton of SBS needs to consume about 3 tons of petroleum.
Consumed in terms of 20,000,000 tons every year according to China's road asphalt, wherein 10% is modified pitch, SBS is needed to count roughly 100,000 tons, year disappears
About 300,000 tons of petroleum of consumption, petroleum resource consumption amount is very big.
Summary of the invention
The present invention to solve the above-mentioned problems, provides a kind of rubber powder modified asphalt of highly anti-fatigue cracking resistance, modified glue powder
There is good binding ability with pitch, rubber powder granule is not easy to be detached from from modified glue powder pitch, and the anti-softening of high temperature, low temperature are prevented
Cracking performance is brilliant, can effectively extend Road Service Life.
The present invention is realized using following technical scheme:
A kind of rubber powder modified asphalt of highly anti-fatigue cracking resistance, in parts by weight, including following component: modified glue powder 10~
30 parts, 0.3~0.6 part of plasticizer, 60~90 parts and 2~5 parts of age resister of basic asphalt；
The modified glue powder is made by the following method, and waste tyre rubber powder is completely immersed in glycerol, and it is initial that glycerol is added
The particulate material of the sodium perborate of weight 3~6%, 30~60 mesh ground after activation processing in a wetted condition is
Modified glue powder.
The immersion that waste tyre rubber powder has received dobell's solution is modified, and Surface Creation reticular structure and chain object, surface have
Carbonyl, hydroxyl isoreactivity group can effectively improve and react effect with carboxyl, sulfoxide group, the sour glycoside group in basic asphalt
Fruit, to improve the connection effect of modified glue powder and matrix pitch, after grinding in a wetted condition, modified glue powder surface it is thick
Rugosity obtains larger raising, increases the contact area with pitch, can be preferably in conjunction with pitch；When grinding, remain in useless
The sodium perborate on tire glue powder surface can be acted on waste tyre rubber powder depth during the grinding process, be improved to waste tyre rubber powder
Modifying function.
After the modified glue powder is mixed with matrix pitch, rubber powder granule swelling, surface texture is further complicated, can be inhaled
The light composition in pitch is received, so that pitch is gradually transformed into asphalitine, to make the rubber powder modified asphalt of highly anti-fatigue cracking resistance
System of systems develop to molten gel-type, and the ingredients such as sulphur, carbon black, silica, iron oxide in modified glue powder enter matrix drip
In blueness, playing the role of, which improves asphalt temperature sensibility, cryogenic property and ageing-resistant performance, the rubber powder of highly anti-fatigue cracking resistance, changes
Property pitch can static storage 72h, much higher than the stability of existing rubber powder pitch.
Preferred scheme, the concrete operations of the activation processing are as follows: under the conditions of 20~30 DEG C, be added dropwise in 0.5~1h
Into the glycerite of sodium perborate, this is persistently stirred with the speed of 20~30rpm the water of glycerol initial weight 50% in the process.
Preferred scheme, the particle size range of the waste tyre rubber powder are 10~30 mesh.
Preferred scheme, the plasticizer include four mercaptoacetate of pentaerythrite, and/or, four sulfydryl fourth of pentaerythrite
Acid esters.
Preferred scheme, the basic asphalt are 70#A grades of bi tumenf orr oads.
Preferred scheme, the age resister include rosin glycerides, and/or, isobutyl stearate.
In the preparation process of modified pitch, under the conditions of being in 160 DEG C or more of temperature for a long time aging can occur for pitch,
With the extension of ageing time, the degree of aging of pitch is deepened, and pitch gradually becomes brittle, so that high temperature rutting resistance obtains
It significantly improves, but pitch softens with the raising of temperature, light components loss under the effect of hot oxygen of pitch, another part transformation
At macromolecular components such as asphalitines, with the increase of bituminous pavement load number, there is fatigue in pitch, and recoverable force ability becomes
Difference, furthermore.The present invention can effectively reduce the loss of pitch light components by addition age resister, and be retained on height
In the mixed system of the rubber powder modified asphalt of antifatigue cracking resistance, the road of making is under 48 DEG C or more of hot conditions, lightweight
Component loss speed is effectively reduced, and road life obtains biggish extension.
Four mercaptoacetate of pentaerythrite and four mercaptobutylate of pentaerythrite as plasticizer, can in modified glue powder and
When basic asphalt is kneaded, sulfydryl, four mercaptobutylate of four mercaptoacetate of pentaerythrite and pentaerythrite are provided for co-mixing system
Fracture recombination, four sulfydryl fourth of four mercaptoacetate of pentaerythrite and pentaerythrite occur in blending system for the ester bond itself having
Acid esters can be used as crosslinking center, occur with modified glue powder, age resister and asphalitine component as plasticizer, symmetrical structure
Crosslinking, and synergistic effect is generated with said components, improve the rubber powder modified asphalt of highly anti-fatigue cracking resistance of the present invention
The mixing binding ability of middle modified glue powder and pitch.
Preferred scheme further includes in parts by weight 0.6~1.5 part of wooden amine cationic asphalt emulsifier.Using wood
Matter amine cation type asphalt emulsifier emulsifies basic asphalt, improves the adhesion strength of pitch and building stones, with above-mentioned side
Complicated physical and chemical reaction occurs for modified glue powder, plasticizer, ageing machine and basic asphalt in case, plays synergistic work
With.
Preferred scheme further includes acrylic acid -2- acrylamide-2-methyl propane sulfonic copolymer.Positively charged is hanged
Floating particle carries out electrical neutralization, has strong adsorption bridge formation function, due to containing carboxylic acid group and highly polar sulfonic acid in molecular structure
Base can mutually melt well with matrix pitch, and dispersion performance is excellent, with modified glue powder, plasticizer, age resister and pitch
Matter component generates synergistic function, further improves the comprehensive performance of the rubber powder modified asphalt of highly anti-fatigue cracking resistance.
The beneficial effects of the present invention are:
1, in the rubber powder modified asphalt of highly anti-fatigue cracking resistance of the invention, modified glue powder and pitch have good combination
Ability, rubber powder granule are not easy to be detached from from modified glue powder pitch, and the anti-softening of high temperature, low temperature crack resistence performance brilliance, Neng Gouyou
Effect extends Road Service Life, and the road quality of making is preferable, pavement maintenance expense is reduced, in the mark for not reducing pavement strength
Standard is lower to reduce the thickness on road surface, to reduce consumption of asphalt amount, and the road surface color being laid with is more black, improves driving comfort level.
2, the immersion that waste tyre rubber powder has received dobell's solution is modified, Surface Creation reticular structure and chain object, surface tool
There are carbonyl, hydroxyl isoreactivity group, can effectively improve and be reacted with carboxyl, sulfoxide group, the sour glycoside group in basic asphalt
Effect is ground rear surface roughness in a wetted condition and is obtained to improve the connection effect of modified glue powder and matrix pitch
Larger raising increases the contact area with pitch, can be preferably in conjunction with pitch, the rubber powder modified of highly anti-fatigue cracking resistance
Pitch can static storage 72h, much higher than the stability of existing rubber powder pitch.
3, the present invention can effectively reduce the loss of pitch light components by addition age resister, and be retained on
In the mixed system of the rubber powder modified asphalt of highly anti-fatigue cracking resistance, the road of making is under 48 DEG C or more of hot conditions, gently
Matter component loss speed is effectively reduced, and road life obtains biggish extension.
4, as plasticizer, symmetrical structure can for four mercaptoacetate of pentaerythrite and four mercaptobutylate of pentaerythrite
It as crosslinking center, is crosslinked with modified glue powder, age resister and asphalitine component, and generates synergy with said components
Effect, improve modified glue powder energy in conjunction with the mixing of pitch in the rubber powder modified asphalt of highly anti-fatigue cracking resistance of the present invention
Power.
5, acrylic acid -2- acrylamide-2-methyl propane sulfonic copolymer of the invention, can be to positively charged suspension grain
Son carries out electrical neutralization, has strong adsorption bridge formation function, due to containing carboxylic acid group and highly polar sulfonic group, energy in molecular structure
It is enough mutually to melt well with matrix pitch, and dispersion performance is excellent, with modified glue powder, plasticizer, age resister and asphalitine group
Divide and generate synergistic function, further improves the comprehensive performance of the rubber powder modified asphalt of highly anti-fatigue cracking resistance.
Specific embodiment
The technical solution in embodiment will be clearly and completely described below.Obviously, described embodiment is only
It is a part of the embodiments of the present invention, instead of all the embodiments.Based on the embodiment of the present invention, ordinary skill people
Member's every other embodiment obtained without creative efforts, shall fall within the protection scope of the present invention.
Embodiment 1
A kind of rubber powder modified asphalt of highly anti-fatigue cracking resistance, is made by the steps:
S1, weighs following substance by weight: 10~30 purposes are given up 10 parts of cross-ply rubber powder, four thioacetic acid of pentaerythrite
0.6 part of ester, 70#A grades 60 parts of bi tumenf orr oad, BH-MM1 parts of slow hardening type cation asphalt emulgent, rosin glycerides 3 are split slowly
Part, 80 parts of glycerol；
Waste tyre rubber powder is completely immersed in glycerol by S2, and the sodium perborate of glycerol initial weight 4% is added, drips in 1h
Into the glycerite of sodium perborate, this is persistently stirred with the speed of 20rpm the water of glycerol adding initial weight 50% in the process,
The particulate material of 30~60 mesh ground under wet condition；
S3 will split slow hardening type cation asphalt emulgent BH-MM slowly and be configured to the solution that mass percent is 4%, is added
Particulate material made from previous step stirs evenly obtained modified glue powder solution；
S4 melts 70#A grades of bi tumenf orr oads under the conditions of 140~150 DEG C, after being warming up to 170~190 DEG C, is added
Preheating is liquid rosin glycerides, after mixing evenly, four mercaptoacetate of pentaerythrite and modified glue powder solution is added,
1h is stirred under the conditions of 180~190 DEG C, the rubber powder modified asphalt of highly anti-fatigue cracking resistance is made.
Embodiment 2
A kind of rubber powder modified asphalt of highly anti-fatigue cracking resistance, is made by the steps:
S1, weighs following substance by weight: 10~30 purposes are given up 10 parts of cross-ply rubber powder, four thioacetic acid of pentaerythrite
0.6 part of ester, 70#A grades 60 parts of bi tumenf orr oad, 1 part of wooden amine cationic asphalt emulsifier, 3 parts of rosin glycerides, glycerol
80 parts；
Waste tyre rubber powder is completely immersed in glycerol by S2, and the sodium perborate of glycerol initial weight 4% is added, drips in 1h
Into the glycerite of sodium perborate, this is persistently stirred with the speed of 20rpm the water of glycerol adding initial weight 50% in the process,
The particulate material of 30~60 mesh ground under wet condition；；
Wooden amine cationic asphalt emulsifier is configured to the solution that mass percent is 4%, previous step is added by S3
Particulate material obtained stirs evenly obtained modified glue powder solution；
S4 melts 70#A grades of bi tumenf orr oads under the conditions of 140~150 DEG C, after being warming up to 170~190 DEG C, is added
Preheating is liquid rosin glycerides, after mixing evenly, four mercaptoacetate of pentaerythrite and modified glue powder solution is added,
1h is stirred under the conditions of 180~190 DEG C, the rubber powder modified asphalt of highly anti-fatigue cracking resistance is made.
Embodiment 3
A kind of rubber powder modified asphalt of highly anti-fatigue cracking resistance, is made by the steps:
S1, weighs following substance by weight: 10~30 purposes are given up 30 parts of radial rubber powder, four sulfydryl fourth of pentaerythrite
0.6 part of acid esters, 70#A grades 90 parts of bi tumenf orr oad, 0.6 part of wooden amine cationic asphalt emulsifier, isobutyl stearate 5
Part, 80 parts of glycerol；
Waste tyre rubber powder is completely immersed in glycerol by S2, the sodium perborate of glycerol initial weight 4.5% is added, in 0.5h
Into the glycerite of sodium perborate, this is persistently stirred with the speed of 25rpm the interior water that glycerol initial weight 50% is added dropwise in the process
It mixes, the particulate material of 30~60 mesh ground in a wetted condition；；
Wooden amine cationic asphalt emulsifier is configured to the solution that mass percent is 1%, previous step is added by S3
Particulate material obtained stirs evenly obtained modified glue powder solution；
S4 melts 70#A grades of bi tumenf orr oads under the conditions of 140~150 DEG C, after being warming up to 170~190 DEG C, is added
Preheating is liquid isobutyl stearate, after mixing evenly, four mercaptobutylate of pentaerythrite is added and modified glue powder is molten
Liquid stirs 2h under the conditions of 180~190 DEG C, and the rubber powder modified asphalt of highly anti-fatigue cracking resistance is made.
Embodiment 4
A kind of rubber powder modified asphalt of highly anti-fatigue cracking resistance, is made by the steps:
S1 weighs following substance: 20 parts of the waste tyre rubber powder of 10~30 mesh, four mercaptobutylate of pentaerythrite by weight
0.1 part.0.4 part of four mercaptobutylate of pentaerythrite, 70#A grades 80 parts of bi tumenf orr oad, wooden amine cationic asphalt emulsification
1.5 parts of agent, 3 parts of rosin glycerides, 2 parts of isobutyl stearate, 80 parts of glycerol；
Waste tyre rubber powder is completely immersed in glycerol by S2, the sodium perborate of glycerol initial weight 5% is added, in 0.75h
The water of glycerol initial weight 50% is added dropwise into the glycerite of sodium perborate, this is persistently stirred with the speed of 25rpm in the process,
The particulate material of 30~60 mesh ground in a wetted condition；
Wooden amine cationic asphalt emulsifier is configured to the solution that mass percent is 2%, with acrylic acid -2- by S3
Acrylamide-2-methyl propane sulfonic copolymer adjusts pH to 6.5~7.5, and particulate material made from previous step, stirring is added
Uniformly obtained modified glue powder solution；
S4 melts 70#A grades of bi tumenf orr oads under the conditions of 140~150 DEG C, after being warming up to 170~190 DEG C, is added
Preheating is that modified glue powder solution is added after mixing evenly in liquid rosin glycerides and isobutyl stearate, 180~
1~2h is stirred under the conditions of 190 DEG C, and the rubber powder modified asphalt of highly anti-fatigue cracking resistance is made.
The waste tyre rubber powder be go after discarded cross-ply, radial, the crushing in wheels tire it is deimpurity
Mixture.
Embodiment 5
A kind of rubber powder modified asphalt of highly anti-fatigue cracking resistance, is made by the steps:
S1 weighs following substance: 15 parts of the waste tyre rubber powder of 10~30 mesh, four mercaptoacetate of pentaerythrite by weight
0.2 part.0.2 part of four mercaptobutylate of pentaerythrite, 70#A grades 70 parts of bi tumenf orr oad, wooden amine cationic asphalt emulsification
1.3 parts of agent, 2 parts of rosin glycerides, 2 parts of isobutyl stearate, 80 parts of glycerol；
Waste tyre rubber powder is completely immersed in glycerol by S2, and the sodium perborate of glycerol initial weight 6% is added, drips in 1h
Into the glycerite of sodium perborate, this is persistently stirred with the speed of 25rpm the water of glycerol adding initial weight 50% in the process,
The particulate material of 30~60 mesh ground under wet condition；
Wooden amine cationic asphalt emulsifier is configured to the solution that mass percent is 3%, with acrylic acid -2- by S3
Acrylamide-2-methyl propane sulfonic copolymer adjusts pH to 6.5~7.5, and particulate material made from previous step, stirring is added
Uniformly obtained modified glue powder solution；
S4 melts 70#A grades of bi tumenf orr oads under the conditions of 140~150 DEG C, after being warming up to 170~190 DEG C, is added
Preheating be liquid rosin glycerides and isobutyl stearate, after mixing evenly, be added four mercaptoacetate of pentaerythrite,
Four mercaptobutylate of pentaerythrite and modified glue powder solution stir 2h under the conditions of 180~190 DEG C, and obtained highly anti-fatigue is anti-to be opened
The rubber powder modified asphalt split.
The waste tyre rubber powder be go after discarded cross-ply, radial, the crushing in wheels tire it is deimpurity
Mixture.
Comparative example
SBS modified asphalt mixture, is made as follows:
In terms of mass parts, 82 parts of 70#A grades of bi tumenf orr oads are melted under the conditions of 140~150 DEG C, it is warming up to 170~
After 180 DEG C, 18 parts of SBS modifiers are added, stir 3h under the conditions of 170~180 DEG C, SBS modified asphalt mixture is made.
By the parameter of experiment test above-described embodiment, detection method is referring to Tables 1 and 2, and detection data is referring to 1~table of table
3。
1 data test technical indicator of table and detection method (one)
2 data test technical indicator of table and detection method (two)
Since modified glue powder is in granular form, exist so that penetration test result random error is larger, and the present invention adopts
With modified glue powder particle, needle penetration result is not suitable for the performance of evaluation rubber powder pitch.
The test data of Examples 1 to 5 is as follows:
3 Examples 1 to 5 test data of table
| Detection project | Unit | Embodiment 1 | Embodiment 2 | Embodiment 3 | Embodiment 4 | Embodiment 5 |
| Ring and ball softening point | ℃ | 68 | 68 | 65 | 66 | 66 |
| 5 DEG C of ductilities | cm | 13.2 | 14.6 | 14.4 | 14.8 | 15.2 |
| 25 DEG C of elasticity are restored | % | 75.6 | 77.2 | 77.6 | 78.4 | 79.2 |
| 180 DEG C of brookfield viscosities | Pa·s | 2.3 | 2.4 | 2.4 | 2.4 | 2.4 |
| Flash-point | ℃ | >250 | >250 | >250 | >250 | >250 |
| 48 hours isolation softening point differences | ℃ | 0.3 | 0.2 | 0.2 | 0.2 | 0.2 |
| Mass change | % | 0.4 | 0.4 | 0.4 | 0.4 | 0.4 |
| Penetration ratio | % | 81 | 81 | 81 | 85 | 86 |
| High temperature anti-rut behavior | Secondary/mm | 4382 | 4624 | 4644 | 4736 | 4860 |
| Crack resistance at low-temperature | με | 2492 | 2631 | 2648 | 2634 | 2661 |
| Residual stability | % | 95.4 | 96.3 | 96.2 | 96.4 | 96.5 |
| Freeze-thaw split intensity ratio | % | 84.5 | 86.7 | 86.8 | 87.1 | 86.9 |
As can be seen from the above experimental data, the performance test data of the rubber powder modified asphalt of highly anti-fatigue cracking resistance are full
Sufficient current specifications " standard specification for construction and acceptance of highway asphalt pavement " (JTGF40-2004) to the technical indicator of modified asphalt mixture,
It quite or increases with the performance test data of SBS modified asphalt mixture, especially in ring and ball softening point, 5 DEG C of ductilities, needles
It is higher than SBS modified asphalt mixture in terms of in-degree ratio, high temperature anti-rut behavior and low temperature anti-cracking performance.
Claims (8)
1. a kind of rubber powder modified asphalt of highly anti-fatigue cracking resistance, which is characterized in that in parts by weight, including following component: change
Property 10~30 parts of rubber powder, 0.3~0.6 part of plasticizer, 60~90 parts of basic asphalt and 2~5 parts of age resister；
The modified glue powder is made by the following method, and waste tyre rubber powder is completely immersed in glycerol, and glycerol initial weight 3 is added
~6% sodium perborate, the particulate material of 30~60 mesh ground after activation processing in a wetted condition are to be modified
Rubber powder.
2. the rubber powder modified asphalt of highly anti-fatigue cracking resistance according to claim 1, which is characterized in that the activation processing
Concrete operations are as follows: under the conditions of 20~30 DEG C, the water of glycerol initial weight 50% is added dropwise in 0.5~1h to sodium perborate
In glycerite, this is persistently stirred with the speed of 20~30rpm in the process.
3. the rubber powder modified asphalt of highly anti-fatigue cracking resistance according to claim 1, which is characterized in that the damaged tire glue
The particle size range of powder is 10~30 mesh.
4. the rubber powder modified asphalt of highly anti-fatigue cracking resistance according to claim 1, which is characterized in that the plasticizer packet
Four mercaptoacetate of pentaerythrite is included, and/or, four mercaptobutylate of pentaerythrite.
5. the rubber powder modified asphalt of highly anti-fatigue cracking resistance according to claim 1, which is characterized in that the basic asphalt
For 70#A grades of bi tumenf orr oads.
6. the rubber powder modified asphalt of highly anti-fatigue cracking resistance according to claim 1, which is characterized in that the age resister
Including rosin glycerides, and/or, isobutyl stearate.
7. the rubber powder modified asphalt of highly anti-fatigue cracking resistance according to claim 1, which is characterized in that in parts by weight,
It further include 0.6~1.5 part of wooden amine cationic asphalt emulsifier.
8. the rubber powder modified asphalt of highly anti-fatigue cracking resistance according to claim 1, which is characterized in that further include propylene
Acid -2- acrylamide-2-methyl propane sulfonic copolymer.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111793370A (en) * | 2020-08-17 | 2020-10-20 | 长春工程学院 | Salt-tolerant asphalt mixture and preparation method thereof |
| CN113461977A (en) * | 2020-09-22 | 2021-10-01 | 闵珩 | High-softening-point asphalt particles |
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