CN105368084A - Modified pitch and preparation method thereof - Google Patents
Modified pitch and preparation method thereof Download PDFInfo
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- CN105368084A CN105368084A CN201510951566.7A CN201510951566A CN105368084A CN 105368084 A CN105368084 A CN 105368084A CN 201510951566 A CN201510951566 A CN 201510951566A CN 105368084 A CN105368084 A CN 105368084A
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- parts
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- modifying asphalt
- asphalt
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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
Abstract
The invention relates to the technical field of material preparation, in particular to modified pitch and a preparation method thereof. The modified pitch is prepared from 60-90 parts of pitch, 5-15 parts of natural rubber, 5-20 parts of polymer modifier, 2-8 parts of activated carbon, 2-8 parts of cross-linking agent, 1-4 parts of emulsifier, 1-6 parts of compatilizer and 1-3 parts of polyethylene glycol. According to the modified pitch, modification is conducted on the pitch through the natural rubber and the polymer modifier, rutting-resistant and high-temperature splitting capacity and water stability of the pitch are well improved, and fatigue damage, stripping and temperature sensibility are reduced. The invention further provides the preparation method of the modified pitch, the method is matched with the pitch, and operation is simple, convenient and reliable.
Description
Technical field
The present invention relates to technical field of material, in particular to a kind of modifying asphalt and preparation method thereof.
Background technology
Along with China's expanding economy, the gradual perfection of railway and highway system, the construction scale of asphalt highway expands gradually, and particularly the continuous increase of high-grade highway construction mileage, in rising trend to the demand of high-quality highway asphalt.Because plain asphalt exists the performance shortcomings such as cohesive force difference, extensibility is low, wax content is high, temperature sensitivity is large, be difficult to use on high-grade highway; Simultaneously because the development of national economy brings the volume of traffic to increase sharply, the factors such as vehicle capacity increases considerably and China north and south, summer in the winter temperature difference be large, have higher requirement to the quality of bituminous pavement.
Modifying asphalt is the additives (properties-correcting agent) such as admixture rubber, resin, high molecular polymer, levigate rubber powder or other fillers, or take measures such as pitch mild oxidation processing, the performance of pitch or asphalt is improved the asphaltic binder made.The usual comparatively traditional asphalt of the modifying asphalt that current China adopts has better properties, but its intensity still has the space of improving further, and the high-temperature stability of existing pitch, crack resistance at low-temperature and water stability are still not ideal enough.
In view of this, special proposition the present invention.
Summary of the invention
The first object of the present invention is to provide a kind of modifying asphalt, described modifying asphalt, can solve existing asphaltic products. undercapacity, the shortcoming that high/low temperature is stablized and water stability is undesirable.
The second object of the present invention is the preparation method providing a kind of described modifying asphalt, and this preparation method coordinates with described pitch, reliably easy and simple to handle.
In order to realize above-mentioned purpose of the present invention, spy by the following technical solutions:
A kind of modifying asphalt, comprises following material component:
Pitch 60 ~ 90 parts, natural rubber 5 ~ 15 parts, polymer modifiers 5 ~ 20 parts, gac 2 ~ 8 parts, linking agent 2 ~ 8 parts, emulsifying agent 1 ~ 4 part, compatilizer 1 ~ 6 part, polyoxyethylene glycol 1 ~ 3 part.
The application carries out modification with natural rubber, polymer modifiers to pitch, well improves the Rut resistance of pitch, Pintsch process ability and water stability, reduces fatigue damage, stripping and temperature sensitivity.
Preferably, modifying asphalt as above, comprises following material component:
Pitch 70 ~ 80 parts, natural rubber 8 ~ 13 parts, polymer modifiers 10 ~ 15 parts, gac 3 ~ 5 parts, linking agent 4 ~ 6 parts, emulsifying agent 2 ~ 3 parts, compatilizer 3 ~ 5 parts, polyoxyethylene glycol 1 ~ 2 part.
Preferably, modifying asphalt as above, described pitch is 70# or 90#A level pitch.
70# is higher than 90# pitch hardness, and the local temperature be applicable to is higher than 90# asphalt temperature, and the low-temperature performance of 90# pitch is then better than 70# pitch, and row uses being adapted at comparatively cold area.When specifically selecting, should select flexibly according to the temperature conditions of institute's road surface pavement.
Preferably, modifying asphalt as above, described polymer modifiers is mass percent is (1 ~ 2): 1:(1 ~ 2) styrene isoprene styrene block copolymer (SIS), 60 ~ 100 object styrene-butadiene rubber(SBR), high-impact polystyrene composition mixture.
Styrene isoprene styrene block copolymer (SIS) (SIS) has excellent bellow seal and high temperature confining force, and it is pressure-sensitive and hot molten characteristic is good, and energy consumption is little, in this Shen, can be used as caking agent, improves the performance of SBR and HIPS.
Styrene-butadiene rubber(SBR) (SBR) is maximum general purpose synthetic rubber kind, is also one of rubber realizing suitability for industrialized production the earliest.It is divinyl and cinnamic random copolymers.Its physical mechanism performance, the use properties of processing characteristics and goods is close to natural rubber, and some performance as wear-resisting, heat-resisting, ageing-resistant and vulcanization rate is more excellent compared with natural rubber, can be used with natural rubber and various synthetic rubber.
High-impact polystyrene (HIPS) is the thermoplastic material be made up of elastomer-modified polystyrene.The two-phase system be made up of mutually with continuous print polystyrene rubber phase, there is very wide scope its impact property and processing characteristics side.
Preferably, modifying asphalt as above, described linking agent comprise in phenyl aldehyde, crystallization sulphur, polyisobutene one or more.
Linking agent can improve the storage stability of the polymer modifiers that the application adopts.By adding suitable linking agent, make, between polymer modifiers and pitch, crosslinking reaction occurs, thus the visco-elasticity of enhancing modified pitch and consistency, farthest play its modifying function.
Preferably, modifying asphalt as above, described emulsifying agent is Pn.
The amphipathic molecule that the emulsifying agent of pitch is made up of the hydrophilic group of nonpolar hydrophobic group and polarity, this structure makes emulsifying agent form directed close-packed arrays in solution table (boundary) face, changes table (boundary) the surface chemistry character of system.When the concentration of emulsifying agent exceedes its micelle-forming concentration, table (boundary) surface tension is down to minimum, thus has the functions such as emulsification, froth breaking, dispersion.
The preferred Pn of the application is cationic emulsifier, technology maturation, and toxicity is little, and does not need to regulate pH directly to use, and has the few advantage of consumption.
Preferably, modifying asphalt as above, described compatilizer is catalytically cracked oil.
Compatilizer, also known as expanding material, refers to by means of intermolecular linkage force, impels inconsistent two kinds of polymer scales to be combined in one, and then obtains the auxiliary agent of stable blend.The preferred catalytically cracked oil of the application, the alkane in highly condensed aromatic hydrocarbons replacement pitch colloidal dispersion wherein and low condensed aromatics, can improve extensibility and the durability degree of pitch.
A preparation method for modifying asphalt, comprises the following steps:
1), by natural rubber, polymer modifiers, gac, linking agent, emulsifying agent, compatilizer, polyoxyethylene glycol heating also milled processed, mixing material is obtained;
2), by asphalt heating to molten state, then stir, until there is no bubble in solution in pitch mixed solution being added melting; High speed shear subsequently; Naturally cool to normal temperature and namely obtain modifying asphalt.
The preparation method of the modifying asphalt that the application provides, this preparation method coordinates with described pitch, reliably easy and simple to handle.
Preferably, the preparation method of modifying asphalt as above:
In step 1) in, the temperature of heating is 140 ~ 180 DEG C;
In step 2) in, during by asphalt heating to molten state, temperature of reaction is 170 ~ 195 DEG C, isothermal reaction 20 ~ 40min.
When stirring the modified asphalt mixture of the application, the temperature of rigorous concentration modified asphalt mixture, being advisable with about 180 DEG C.The temperature of mixing material also it is noted that and makes it remain between 140 ~ 180 DEG C, and the temperature of these 2 materials maintains just out of question, if once temperature more than 180 degrees Celsius, compound just can only be abandoned.
Preferably, the preparation method of modifying asphalt as above:
The speed of described high speed shear is 15000 ~ 20000rpm, and shear time is 25 ~ 35min.
The effect of shear agitation is exactly allow the more even of these material mixing, stirs with reasonable manner and dynamics and frequency, not only can prevent asphalt from occurring caking, can also ensure that the texture of modifying asphalt is more fine and smooth flexible.
Compared with prior art, beneficial effect of the present invention is:
(1) the application carries out modification with natural rubber, polymer modifiers to pitch, well improves the Rut resistance of pitch, Pintsch process ability and water stability, reduces fatigue damage, stripping and temperature sensitivity.
(2) preparation method of modifying asphalt that provides of the application, this preparation method coordinates with described pitch, reliably easy and simple to handle.
Embodiment
Below in conjunction with embodiment, embodiment of the present invention are described in detail, but it will be understood to those of skill in the art that the following example only for illustration of the present invention, and should not be considered as limiting the scope of the invention.Unreceipted actual conditions person in embodiment, the condition of conveniently conditioned disjunction manufacturers suggestion is carried out.Agents useful for same or the unreceipted production firm person of instrument, be and can buy by commercially available the conventional products obtained.
Embodiment 1
A kind of modifying asphalt and preparation method thereof
1), by natural rubber 5kg, polymer modifiers 5kg, gac 2kg, linking agent 2kg, emulsifying agent 1kg, compatilizer 1kg, polyoxyethylene glycol 1kg heat and milled processed, obtain mixing material;
2), by pitch 60kg be heated to molten state, then stir, until there is no bubble in solution in pitch mixed solution being added melting; High speed shear subsequently; Naturally cool to normal temperature and namely obtain modifying asphalt.
Embodiment 2
A kind of modifying asphalt and preparation method thereof
1), by natural rubber 15kg, styrene isoprene styrene block copolymer (SIS) 6.6kg, 60 object styrene-butadiene rubber(SBR) 6.6kg, high-impact polystyrene 6.6kg, gac 8kg, polyisobutene 8kg, Pn 4kg, catalytically cracked oil 6kg, polyoxyethylene glycol 3kg be heated to 140 DEG C and milled processed, obtain mixing material;
2), by 70# pitch 90kg in 170 DEG C of heating 40min to molten state, then stir, until there is no bubble in solution in pitch mixed solution being added melting; 15000rpm high speed shear 35min subsequently; Naturally cool to normal temperature and namely obtain modifying asphalt.
Embodiment 3
A kind of modifying asphalt and preparation method thereof
1), by natural rubber 8kg, styrene isoprene styrene block copolymer (SIS) 5kg, 100 object styrene-butadiene rubber(SBR) 5kg, high-impact polystyrene 5kg, gac 3kg, crystallization sulphur 4kg, Pn 2kg, catalytically cracked oil 3kg, polyoxyethylene glycol 1kg be heated to 180 DEG C and milled processed, obtain mixing material;
2), by 90# pitch 70kg in 195 DEG C of heating 20min to molten state, then stir, until there is no bubble in solution in pitch mixed solution being added melting; 20000rpm high speed shear 25min subsequently; Naturally cool to normal temperature and namely obtain modifying asphalt.
Embodiment 4
A kind of modifying asphalt and preparation method thereof
1), by natural rubber 13kg, styrene isoprene styrene block copolymer (SIS) 4kg, 90 object styrene-butadiene rubber(SBR) 2kg, high-impact polystyrene 4kg, gac 5kg, polyisobutene 6kg, Pn 3kg, catalytically cracked oil 5kg, polyoxyethylene glycol 2kg be heated to 150 DEG C and milled processed, obtain mixing material;
2), by 70# pitch 80kg in 180 DEG C of heating 30min to molten state, then stir, until there is no bubble in solution in pitch mixed solution being added melting; 20000rpm high speed shear 30min subsequently; Naturally cool to normal temperature and namely obtain modifying asphalt.
Embodiment 5
A kind of modifying asphalt and preparation method thereof
1), by natural rubber 10kg, styrene isoprene styrene block copolymer (SIS) 4kg, 80 object styrene-butadiene rubber(SBR) 5kg, high-impact polystyrene 2.5kg, gac 5kg, phenyl aldehyde 5kg, Pn 2.5kg, catalytically cracked oil 4kg, polyoxyethylene glycol 1.5kg be heated to 160 DEG C and milled processed, obtain mixing material;
2), by 90# pitch 75kg in 185 DEG C of heating 30min to molten state, then stir, until there is no bubble in solution in pitch mixed solution being added melting; 18000rpm high speed shear 30min subsequently; Naturally cool to normal temperature and namely obtain modifying asphalt.
Embodiment 6
A kind of modifying asphalt and preparation method thereof
1), by natural rubber 10kg, styrene isoprene styrene block copolymer (SIS) 6kg, 70 object styrene-butadiene rubber(SBR) 3kg, high-impact polystyrene 6kg, gac 5kg, phenyl aldehyde 5kg, Pn 2.5kg, catalytically cracked oil 4kg, polyoxyethylene glycol 1.5kg be heated to 160 DEG C and milled processed, obtain mixing material;
2), by 70# pitch 75kg in 185 DEG C of heating 30min to molten state, then stir, until there is no bubble in solution in pitch mixed solution being added melting; 17000rpm high speed shear 30min subsequently; Naturally cool to normal temperature and namely obtain modifying asphalt.
Bituminous pavement is directly subject to the impact of vehicular load and atmospheric factor, simultaneously the physics of asphalt, mechanical property climate factor and time factor affect larger, therefore in order to road surface can be made to provide stable, durable service to vehicle, bituminous pavement is necessarily required to have certain stability and weather resistance.Wherein stability comprises high-temperature stability, low-temperature cracking-resistance and water stability.Evaluate below by the properties of experimental example to the embodiment of the present application 1 ~ 6.Take application number as the embodiment 1 of CN201310613383.5 being comparative example 1, is that the embodiment 1 of CN200510022110.9 is comparative example 2 with application number.
The evaluation of experimental example 1 high-temperature stability
Rut is the accumulation that bituminous pavement produces vertical direction tension set under carload repeated action.This distortion mainly occurs in high temperature season.On the heavy traffic road of canalized traffic, when bituminous pavement adopts semi-rigid type base, rut mainly occurs in oil mat, and the distortion of other each layer only accounts for very small portion.
Wheel tracking test: rut board size is 300mm × 300mm × 100mm, test temperature is 60 DEG C.Get the distortion of 45min and 60min, calculate the number of times producing 1mm deformation test wheel and come and go, as dynamic stability.
Table 1 wheel tracking test result
As can be seen from Table 1, wheel tracking test stability is in same level substantially, and all higher than the requirement of current specifications.The permanent deformation resistance of embodiment 1 ~ 6 is much better than comparative example 1 and comparative example 2
The evaluation of experimental example 2 water stability
Table 2 residual stability test-results
Note: residual stability is designated as 100% more than 100%; Marshall stability is measured under 60 DEG C of water temperatures.
In order to the actual state of simulated roadway, the application is with the bearing capacity of indirect tensile test on frozen-thaw test test specimen, under splitting condition, test specimen inside is in tension state, the destruction of test specimen is caused because the cohesive force of inside is not enough to opposing imposed load, is therefore more conducive to reflect that moisture is to the softening of pitch and the spalling effect to asphalt membrane.By measuring asphalt test piece in the strength ratio being subject to cleavage fracture before and after Moisture Damage, the water stability of asphalt can be evaluated.Test-results is as shown in table 3:
Table 3 indirect tensile test on frozen-thaw result
As can be known from the above table, the retained strength of embodiment 1 ~ 6 is than being all greater than comparative example 1 ~ 2.
The evaluation of experimental example 3 low-temperature stability
Low-temperature bending test the results are shown in Table 4, and sample dimensions is 40mm × 40mm × 200mm.
Table 4 low-temperature bending test result
Pitch cold property is the important factor affecting cold cracking.Its major cause is that the thermal stress sharply changing generation due to winter temperature has little time to relax, produce accumulative effect, and with the accumulation of ability, when ability reaches the limit that asphalt allows, will ftracture at the weak part of road surfaces or pavement structure, the ability of accumulation is discharged.
From test-results, the cold property of embodiment 1 ~ 6 is all significantly better than comparative example 1 ~ 2.
Although illustrate and describe the present invention with specific embodiment, however it will be appreciated that can to make when not deviating from the spirit and scope of the present invention many other change and amendment.Therefore, this means to comprise all such changes and modifications belonged in the scope of the invention in the following claims.
Claims (10)
1. a modifying asphalt, is characterized in that, comprises following material component:
Pitch 60 ~ 90 parts, natural rubber 5 ~ 15 parts, polymer modifiers 5 ~ 20 parts, gac 2 ~ 8 parts, linking agent 2 ~ 8 parts, emulsifying agent 1 ~ 4 part, compatilizer 1 ~ 6 part, polyoxyethylene glycol 1 ~ 3 part.
2. modifying asphalt as claimed in claim 1, is characterized in that, comprise following material component:
Pitch 70 ~ 80 parts, natural rubber 8 ~ 13 parts, polymer modifiers 10 ~ 15 parts, gac 3 ~ 5 parts, linking agent 4 ~ 6 parts, emulsifying agent 2 ~ 3 parts, compatilizer 3 ~ 5 parts, polyoxyethylene glycol 1 ~ 2 part.
3. modifying asphalt as claimed in claim 1 or 2, it is characterized in that, described pitch is 70# or 90#A level pitch.
4. modifying asphalt as claimed in claim 1 or 2, it is characterized in that, described polymer modifiers is mass percent is (1 ~ 2): 1:(1 ~ 2) styrene isoprene styrene block copolymer (SIS), 60 ~ 100 object styrene-butadiene rubber(SBR), high-impact polystyrene composition mixture.
5. modifying asphalt as claimed in claim 1 or 2, is characterized in that, described linking agent comprise in phenyl aldehyde, crystallization sulphur, polyisobutene one or more.
6. modifying asphalt as claimed in claim 1 or 2, it is characterized in that, described emulsifying agent is Pn.
7. modifying asphalt as claimed in claim 1 or 2, it is characterized in that, described compatilizer is catalytically cracked oil.
8. a preparation method for modifying asphalt, is characterized in that, comprises the following steps:
1), by natural rubber, polymer modifiers, gac, linking agent, emulsifying agent, compatilizer, polyoxyethylene glycol heating also milled processed, mixing material is obtained;
2), by asphalt heating to molten state, then stir, until there is no bubble in solution in pitch mixed solution being added melting; High speed shear subsequently; Naturally cool to normal temperature and namely obtain modifying asphalt.
9. the preparation method of modifying asphalt as claimed in claim 8, is characterized in that:
In step 1) in, the temperature of heating is 140 ~ 180 DEG C;
In step 2) in, during by asphalt heating to molten state, temperature of reaction is 170 ~ 195 DEG C, isothermal reaction 20 ~ 40min.
10. the preparation method of modifying asphalt as claimed in claim 8, is characterized in that:
The speed of described high speed shear is 15000 ~ 20000rpm, and shear time is 25 ~ 35min.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201510951566.7A CN105368084B (en) | 2015-12-16 | 2015-12-16 | A kind of modified pitch and preparation method thereof |
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| CN201510951566.7A CN105368084B (en) | 2015-12-16 | 2015-12-16 | A kind of modified pitch and preparation method thereof |
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| CN105368084A true CN105368084A (en) | 2016-03-02 |
| CN105368084B CN105368084B (en) | 2017-11-10 |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107201047A (en) * | 2017-06-06 | 2017-09-26 | 安徽圣源橡塑科技有限公司 | A kind of activated waste rubber powder modified asphalt material |
| CN108841187A (en) * | 2018-07-21 | 2018-11-20 | 朱红艳 | A kind of polyisobutene modified asphalt for construction and preparation method |
| 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 |
| CN111073320A (en) * | 2019-12-30 | 2020-04-28 | 海南天然橡胶产业集团股份有限公司 | Natural rubber modified asphalt and preparation method thereof |
| CN111349345A (en) * | 2020-04-03 | 2020-06-30 | 大连理工大学 | Vulcanized natural rubber modified asphalt and preparation method thereof |
| CN112778784A (en) * | 2021-02-19 | 2021-05-11 | 管仲洲 | High-temperature-resistant asphalt material and preparation method thereof |
| CN113801489A (en) * | 2021-10-19 | 2021-12-17 | 广州高速运营管理有限公司 | Rubber powder modified asphalt for pavement repair and preparation method thereof |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1693372A (en) * | 2005-06-09 | 2005-11-09 | 长安大学 | Modified asphaltum material and preparation process thereof |
| CN1847318A (en) * | 2005-04-06 | 2006-10-18 | 许政道 | Compositions and manufacturing methods of bitumen modifiers having complex functionality |
| CN101613533A (en) * | 2008-06-28 | 2009-12-30 | 西北师范大学 | Polymer chemically-modified asphalt composition of high temperature storage stable and preparation method thereof |
| CN102219976A (en) * | 2010-04-16 | 2011-10-19 | 深圳市海川实业股份有限公司 | High-viscosity asphalt modifier, modified asphalt and asphalt mixture |
| CN102924937A (en) * | 2012-11-15 | 2013-02-13 | 陕西理工学院 | Modified asphalt with polyethylene glycol/activated carbon phase change material and preparation method thereof |
| CN103865279A (en) * | 2012-12-14 | 2014-06-18 | 张亮 | Modified asphalt and preparation method thereof |
-
2015
- 2015-12-16 CN CN201510951566.7A patent/CN105368084B/en not_active Expired - Fee Related
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1847318A (en) * | 2005-04-06 | 2006-10-18 | 许政道 | Compositions and manufacturing methods of bitumen modifiers having complex functionality |
| CN1693372A (en) * | 2005-06-09 | 2005-11-09 | 长安大学 | Modified asphaltum material and preparation process thereof |
| CN101613533A (en) * | 2008-06-28 | 2009-12-30 | 西北师范大学 | Polymer chemically-modified asphalt composition of high temperature storage stable and preparation method thereof |
| CN102219976A (en) * | 2010-04-16 | 2011-10-19 | 深圳市海川实业股份有限公司 | High-viscosity asphalt modifier, modified asphalt and asphalt mixture |
| CN102924937A (en) * | 2012-11-15 | 2013-02-13 | 陕西理工学院 | Modified asphalt with polyethylene glycol/activated carbon phase change material and preparation method thereof |
| CN103865279A (en) * | 2012-12-14 | 2014-06-18 | 张亮 | Modified asphalt and preparation method thereof |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107201047A (en) * | 2017-06-06 | 2017-09-26 | 安徽圣源橡塑科技有限公司 | A kind of activated waste rubber powder modified asphalt material |
| 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 |
| CN108841187A (en) * | 2018-07-21 | 2018-11-20 | 朱红艳 | A kind of polyisobutene modified asphalt for construction and preparation method |
| CN111073320A (en) * | 2019-12-30 | 2020-04-28 | 海南天然橡胶产业集团股份有限公司 | Natural rubber modified asphalt and preparation method thereof |
| CN111349345A (en) * | 2020-04-03 | 2020-06-30 | 大连理工大学 | Vulcanized natural rubber modified asphalt and preparation method thereof |
| CN112778784A (en) * | 2021-02-19 | 2021-05-11 | 管仲洲 | High-temperature-resistant asphalt material and preparation method thereof |
| CN113801489A (en) * | 2021-10-19 | 2021-12-17 | 广州高速运营管理有限公司 | Rubber powder modified asphalt for pavement repair and preparation method thereof |
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| CN105368084B (en) | 2017-11-10 |
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