CN103911009B - Emulsified rubber powder-modified asphalt and preparation method thereof - Google Patents
Emulsified rubber powder-modified asphalt and preparation method thereof Download PDFInfo
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- 239000010426 asphalt Substances 0.000 title claims abstract description 152
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- 239000000843 powder Substances 0.000 claims abstract description 111
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- FFRBMBIXVSCUFS-UHFFFAOYSA-N 2,4-dinitro-1-naphthol Chemical compound C1=CC=C2C(O)=C([N+]([O-])=O)C=C([N+]([O-])=O)C2=C1 FFRBMBIXVSCUFS-UHFFFAOYSA-N 0.000 description 1
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Abstract
The invention provides a kind of emulsified rubber powder-modified asphalt composition, comprise the component of following weight part: rubber powder modified asphalt 50.0 ~ 60.0; Sewer oil 5.0 ~ 10.0; Emulsifying agent 1.0 ~ 3.0 water 20.0 ~ 40.0.The present invention still further provides preparation method and the application of above-mentioned emulsified rubber powder-modified asphalt composition.Emulsified rubber powder-modified asphalt composition of the present invention, preparation method's environmental protection is feasible; High and the very easily emulsification modification of rubber powder volume, storage-stability; There is good high temperature, low temperature and adhesion property; Can in asphalt as conventional SBS modifying asphalt; Meet road engineering other performance requriements to pitch.
Description
Technical field
The invention belongs to road engineering emulsified bitumen and processing technique field thereof, be specifically related to a kind of emulsified rubber powder-modified asphalt and preparation and application thereof.
Background technology
The current large-scale application of modifying asphalt is in road engineering, but the SBS modifying asphalt that current modifying asphalt is mainly prepared using styrene butadiene triblock copolymer as properties-correcting agent, major advantage is high temperature and low temperature performance excellent, storage can be stablized, but the maximum problem of this modifying asphalt is the high cost of styrene butadiene triblock copolymer, the price of its styrene butadiene triblock copolymer is generally the 3-5 of asphalt price doubly, causes the modifying asphalt high cost prepared.
The modifying asphalt that rubber powder is prepared as properties-correcting agent have also been obtained widespread use at present on road, it is applied as the application of rubber asphalt the most widely, its feature is the 20-40 object rubber powder adding more than 15% in pitch, the viscosity of modifying asphalt 177 degree is made to reach the high viscosity of 1.5-5.0Pa.S, and be equipped with the special grating of compound, and up to more than 7% asphalt content, the asphalt prepared may be used for preventing road surface from occurring reflection crack, document ArizonaDepartmentofTransportationStandardspecificationsf orroad & bridgeconstruction, document ASTMD6144-97 (StandardSpecificationforAsphat-RubberBinder) describes this technology all in detail, in addition US Patent No. 4166049, 4840316, 5109041, 5334641 also illustrate this technology, the maximum shortcoming of this technology be compound medium pitch consumption comparatively plain asphalt compound exceed 50% with, cause asphalt high cost, in addition owing to can not solve storage-stability sex chromosome mosaicism, modifying asphalt must now mix existing use at the scene, constrains it and widely uses.
In order to address this problem, US Patent No. 5704971 adopts the high temperature preparation condition up to 250 degree and the method adding a large amount of oxygen can prepare the rubber powder modified asphalt of storage-stability, modifying asphalt prepared by this method can in asphalt as conventional SBS modifying asphalt, and do not need to adopt higher asphalt content in compound, but the shortcoming of this technology is that the temperature preparing modifying asphalt is too high, be difficult to reach under general condition, and energy consumption is larger, environmental pollution is also very large, and the addition of rubber powder is generally no more than 15% in pitch, be difficult to significantly reach consumption tyre rubber powder, reduce the object of pitch cost.
In state-owned a large amount of patent attempt to solve the storage-stability sex chromosome mosaicism of rubber powder modified asphalt, application number/patent No. 200310104905 provides waste Crumb rubber modified asphalt of a kind of stable storing and preparation method thereof, the method is at temperature is 150-200 DEG C, the mixing waste tire rubber powder of the different-grain diameter by 60 mesh sieve, thermoplastic elastomer and stablizer to be joined by a certain percentage in basic asphalt through the process of the specific equipment such as high-shear or colloidal mill, be prepared into the asphaltic products. with good preservation stability, high temperature performance.Application number/patent No. 03118863 relates to a kind of asphalt modified with desulfurized rubber powder of Road construction, because properties-correcting agent is desulfurization rubber powder, it has and dissolves swelling property preferably in pitch, simultaneously because desulfurization creates more active group at vulcanized rubber powder, be conducive to the chemical bonding of rubber powder with pitch, and compatilizer can increase the interaction of rubber powder and pitch further, therefore the modifying asphalt that this invention obtains has excellent high temperature performance and storage stability.Application number/patent No. 03135004 adopts two step process to prepare rubber powder modified asphalt masterbatch and rubber powder/polymer composite modified asphalt.Application number/patent No. 200410050792 provides a kind of method and the waste Crumb rubber modified asphalt composition that improve waste Crumb rubber modified asphalt stability in storage.Application number/patent No. 200580049453 discloses a kind of method of waste rubber powder modifying asphalt.Application number/patent No. 200510022110 discloses a kind of modifying asphalt and preparation method thereof, and it is mixed in proportion in scrap tire powder by activator tetramethyl alkynediols at normal temperatures, mixes and stirs wetting activated rubber powder; In proportion pitch and activated rubber powder are added in reactor again and fully stir, temperature of reaction is risen to 170-180 DEG C, isothermal reaction 0.5-1 hour, after having reacted, naturally cool to normal temperature and namely obtain modifying asphalt.200510084002 rubber powder-bituminous compositions disclosing a kind of steady heat storage and preparation method thereof.Application number/patent No. 200610047442 relates to a kind of preparation method being applicable to industrial rubber powder modified asphalt.Application number/patent No. 200610047788 provides a kind of rubber powder modified asphalt composition and method of making the same improving stability in storage, first one or more fluid additives are adopted to carry out spray treatment to rubber powder, then the waste Crumb rubber processed is joined in basic asphalt, under optimal temperature, rubber powder modified asphalt of the present invention can be obtained through high-shear or colloidal mill device processes for some time.Modifying asphalt disclosed in application number/patent No. 200710118026 passes through the degradation selectivity processing condition analysis of shoddy in pitch, degraded the shoddy recovery of macromole performance and Study on Preparation Technology of waste rubber powder modified asphalt in pitch, develop a kind of by desulfurization degraded and modifying asphalt crosslinked again and method for producing thereof, gained modifying asphalt can form homogeneous mixture system, reduce the viscosity of modifying asphalt, and improve the package stability of product.Application number/patent No. 200810197322 relates to a kind of production technique of asphalt by modification of waste tyre rubber powder, the production technique of high stability asphalt by modification of waste tyre rubber powder, it is characterized in that first carrying out activation treatment to the surface of waste tyre rubber powder, then the waste tyre rubber powder after activation is added in heated bitumen and fully stir, swelling, shear, grinding, then inject growth tank and carry out breeding reaction, obtain stable asphalt by modification of waste tyre rubber powder, the production process of this production technique belongs to chemistry--physical action, waste tyre rubber powder after activation and pitch have carried out crosslinking reaction and have formed stable link molecular structure, its stable performance and can standing storage.Application number/patent No. 200810102378 relates to a kind of waste Crumb rubber modified asphalt and preparation method thereof, pitch, properties-correcting agent and waste Crumb rubber are obtained by carrying out high shear mixing at the temperature of 150-170 DEG C, interface modifier is made to play its maximum efficiency, improve the consistency of waste Crumb rubber and rubber, and then high and low temperature performance and the ageing-resistant performance of pitch can be improved in use, the object reaching Simplified flowsheet simultaneously, reduce costs, realize waste recycling, reduce environmental pollution.Application number/patent No. 200810035847 relates to a kind of waste and old rubber modified asphalt, and said waste and old rubber modified asphalt, by the rubber powder recycled through " desulfurization ", under curable component existence condition, reacts obtained with pitch in 130-250 DEG C.Application number/patent No. CN201010172912.9 provides a kind of modified asphalt composition with high content of rubber powder, comprises the component of following weight percent: rubber powder 35-50%; 2,4,7,9-tetramethyl--5-decine-4,7-glycol 0.5 ~ 2.5%; Pitch surplus.Described patent still further provides preparation method and the application of above-mentioned modified asphalt composition with high content of rubber powder.The modified asphalt composition with high content of rubber powder storage-stability of described patent; There is good high temperature, low temperature and adhesion property; Can in asphalt as conventional SBS modifying asphalt; Meet road engineering other performance requriements to pitch.
But the rubber powder modified asphalt that these patent systems are standby above, all because viscosity is excessive, cannot prepare emulsified bitumen.
Summary of the invention
The shortcoming of prior art in view of the above, the object of the present invention is to provide emulsified rubber powder-modified asphalt that a kind of high temperature stability is strong and crack resistance at low-temperature is good and preparation method thereof.
For achieving the above object and other relevant objects, the present invention is by the following technical solutions:
A kind of emulsified rubber powder-modified asphalt composition, comprises the component of following weight part:
Preferably, described emulsified rubber powder-modified asphalt composition, comprises the component of following weight part:
Described rubber powder modified asphalt is prior art, with the total weight of rubber powder modified asphalt, the composition of described rubber powder modified asphalt and the weight percent of each component as follows:
Rubber powder 30 ~ 65wt%;
2,4,7,9-tetramethyl--5-decine-4,7-glycol, 0.5 ~ 2.5wt%;
Pitch surplus.
Preferably, with the total weight of rubber powder modified asphalt, the composition of described rubber powder modified asphalt and the weight percent of each component as follows:
Rubber powder 35 ~ 55wt%;
2,4,7,9-tetramethyl--5-decine-4,7-glycol, 0.5 ~ 2.5wt%;
Pitch surplus.
The testing method of the rubber hydrocarbon content of the rubber hydrocarbon content >40%(rubber powder of described rubber powder adopts GB/T14837), the problem that the low meeting of rubber hydrocarbon content causes the rubber powder modified asphalt adhesivity of preparation poor.
The molecular formula of described 2,4,7,9-tetramethyl--5-decine-4,7-glycol is C
14h
26o
2.
The testing method of the carbon black content >25%(carbon black content of described rubber powder adopts GB/T14837), as selected carbon black content to be the rubber powder of 30%.The higher meeting of carbon black content makes the road surface of the modifying asphalt making of preparation have good outward appearance.
The powder size of described rubber powder is 30-60 order.
Described pitch can be selected from the conventional substrate pitches such as No. 50, No. 70, No. 90, No. 110.
Described rubber powder modified asphalt, also can comprise the styrene butadiene triblock copolymer of the 1-3% based on whole modifying asphalt weight.
Described sewer oil obtains by after the life sewer oil reclaimed after filtration solid impurity, thermal dehydration.Life sewer oil refers to that people produce the sewer oil after the various oil that can not eat again containing toxic substance and food and drink in food residual in daily life food product making process, mainly comprises three major types: cloaca oil (sewer oil of narrow sense), swill oil (hogwash fat), frying oil.Cloaca oil refers to the greasy floating matter fished in the trench oil trap such as hotel, restaurant, in chocolate liquid paste, has sour foul odour.Swill oil refers to the upper strata oil slick after leftovers, leftovers (common name swill) collection, being golden yellow to garnet, having sour taste through refining.Frying oil refers at high temperature repeatedly for fried food, deterioration occurs, can not continue the grease eaten again.
Described sewer oil water content is less than 0.3wt% by mass percentage.
Preferably, described emulsifying agent is selected from any one that split slowly in fast solidifying type emulsifying agent.More excellent is MQK-1D emulsifying agent, can purchased from American MeadWestvaco company.
The preparation method of emulsified rubber powder-modified asphalt of the present invention comprises the steps:
(1) rubber powder modified asphalt is prepared: by proportioning by 2,4,7,9-tetramethyl--5-decine-4,7-glycol, rubber powder join in pitch, by colloidal mill or high-speed shearing emulsion machine, rubber powder is milled down to median size and is less than 0.2 millimeter under the condition of T1=185-220 DEG C, then under the condition of T1=185-220 DEG C, stirring reaction 75-300 minute, namely prepares rubber powder modified asphalt;
(2) under the condition of 120-180 DEG C, by proportioning, sewer oil is joined in described rubber powder modified asphalt, obtain compounded rubber powder-modified asphalt;
(3) prepare soap lye: be added to the water by emulsifying agent by proportioning, and add hydrochloric acid soln regulate PH be 1.8 ~ 2.2, be heated to T2=45 ~ 90 DEG C, namely prepare soap lye;
(4) by step 2) in gained soap lye mixing in gained compounded rubber powder-modified asphalt and step 3), described emulsified rubber powder-modified asphalt composition can be obtained by emulsifying device grinding.
Described colloidal mill refers to and is made up of stainless steel, semi-stainless steel colloidal mill, the ultimate principle of colloidal mill be fluid or semi-fluid material by a high speed relatively interlock determine between tooth and dynamic tooth, material is made to be subject to powerful shearing force, the effect such as friction and high-frequency vibration, effectively pulverized, emulsification, homogeneous, mixing.
Described high-speed shearing emulsion machine is that the stator that turns be engaged by three layers or multilayer antithesis forms, material by shearing layer by layer, disperse, emulsification, material to be machined is inhaled into rotor and bears shearing action, thus guarantees the object of multi-phase fluid high dispersing and the rapid refinement of immobilized particles; Adopt the high speed rotor of particular design and the combination of stator, under the driving of motor, rotor, with its high linear speed, makes material turning, is subject to shearings in the gap of stator, centrifugal extruding, liquid layer friction, shock tear and the comprehensive action such as turbulent flow, thus reach the effect of dispersion, grinding, emulsification.Its high-speed demand rotating speed should reach per minute more than 2000 turns.
Emulsified rubber powder-modified asphalt composition of the present invention can be used as material of construction, for the maintenance project of bituminous pavement, as being mixed to form asphalt with gathering materials, for making micro-surface area road surface, and crushed stone sealing or mist sealing.The addition of described emulsified rubber powder-modified asphalt is generally 7 ~ 14% of building stones weight.Emulsified rubber powder-modified asphalt prepared by the present invention can improve the adhesivity of building stones and pitch when being used for micro-surface area, improve high-temperature stability and the low-temperature cracking-resistance of sealing.
Find after deliberation, the rubber powder modified asphalt composition of prior art formula, when the volume of rubber powder is more than more than 35%, having cannot process operation, storage is unstable and bituminous composition is uneven problem.The present invention by the screening of formula, simultaneously by the appropriate design of preparation technology, solve cause after rubber powder volume increases cannot the problems such as the unstable and bituminous composition of process operation, storage is uneven.Obtained rubber powder modified asphalt rubber powder volume is high, with low cost, storage-stability; There is good high temperature, low temperature and adhesion property; And by adding appropriate sewer oil, the rubber powder modified asphalt of preparation can be made to be easy to emulsification, and the sewer oil simultaneously owing to adopting at high temperature can not volatilize, when therefore at high temperature joining in rubber powder modified asphalt, a large amount of volatile combustible explosion hazard gases can not be produced, production safety.Gained emulsified rubber powder-modified asphalt composition of the present invention can adopt higher asphalt content for not needing in asphalt as conventional SBS modifying asphalt; Meet road engineering other performance requriements to pitch; Feasible and the environmental protection more of preparation method, is conducive to reducing production cost.
Beneficial effect of the present invention:
(1) the present invention is owing to have employed the rubber powder modified asphalt of high additive and introducing a small amount of sewer oil wherein simultaneously, not only make the very easily emulsification of described rubber powder modified asphalt, also make emulsified rubber powder-modified asphalt composition of the present invention easily prepare and produce, storage-stability simultaneously.
(2) formula of the present invention is compared with other agglutinate formula, also has better adhesivity, can prevent the bituminous pavement after making occur Moisture Damage, loose, disease and the rut such as to peel off.
(3) excellent road performance of emulsified rubber powder-modified asphalt composition of the present invention, all technical is all obviously better than common emulsified bitumen, solves common emulsified asphalt for bellding easy during micro-surface area, hot strength is low and low temperature is easy to crack technical problem; Described emulsified rubber powder-modified asphalt can significantly improve sealing high-temperature stability and low-temperature cracking-resistance thereof when being used for micro-surface area, has good application prospect.
Embodiment
Below in conjunction with embodiment to set forth the present invention further, should be understood that embodiment is not for limiting the scope of the invention.
Unless explanation below, pitch used is and adds moral scholar No. 70 pitches as matrix pitch, 2,4,7,9-tetramethyl--5-decine-4,7-glycol is that sea, Shanghai produces than scientific & trading Co., Ltd., molecular weight is 226, the rubber powder prepared by the truck tyre that rubber powder used is produced for Nanjing Dong Hao rubber powder company limited, and salient features is as follows:
Embodiment 1-4
Rubber powder modified asphalt preparation method: by 2,4,7,9-tetramethyl--5-decine-4,7-glycol, rubber powder join in pitch, by colloidal mill or high-speed shearing emulsion machine, rubber powder is milled down to median size and is approximately less than 0.2 millimeter under the condition of 185-220 DEG C, then under the condition of 185-220 DEG C, stirring reaction 75-300 minute, makes rubber powder modified asphalt.
The formula of embodiment 1-4, processing parameter and test-results are as table 1:
Table 1 rubber powder weight percent comparison rubber powder modified asphalt performance impact
From above-mentioned testing data result, adopt preparation method of the present invention, along with the increasing of rubber powder weight percent, rubber powder modified asphalt 5 DEG C of ductilities, softening temperatures are improved, and another important segregation index we can find out the rubber powder modified asphalt storage-stability of preparation.
Embodiment 5-7
By difference 2,4,7,9-tetramethyl--5-decine-4,7-glycol weight percent when 35% 40 order rubber powders shear 20 minutes at 190 DEG C of high-speed shearing emulsion machines, again under the condition of 190 DEG C, stirring reaction 180 minutes, different 2,4, test-results after 7,9-tetramethyl--5-decine-4,7-glycol weight percent adds is as table 2:
Table 22,4,7,9-tetramethyl--5-decine-4,7-glycol is on the impact of rubber powder modified asphalt performance
From above-mentioned testing data result, adding of 2,4,7,9-tetramethyl--5-decine-4,7-glycol is all improved rubber powder modified asphalt softening temperature and 5 DEG C of ductilities; Obvious to the improvement of storage stability; The modifying asphalt not adding 2,4,7,9-tetramethyl--5-decine-4,7-glycol due to viscosity excessive, cause processing.
Embodiment 8-10
By 1.5% 2,4,7,9-tetramethyl--5-decine-4,7-glycol weight percent when 35% 40 order rubber powders high-speed shearing emulsion machine under different processing temperature shear 20 minutes, stirring reaction 90 minutes again, study the rubber powder modified asphalt performance prepared under different processing temperature, result is as table 3:
Table 3 processing temperature is to the research of rubber powder modified asphalt performance impact
From above-mentioned testing data result, improve processing temperature and match with high speed shear, the problems such as the too high modifying asphalt caused of rubber powder volume is coarse, storage is unstable can be overcome.After processing temperature raises, system molecular activity is aggravated, and rubber powder molecular structure launches more complete more thorough, and whole system is more smoothly fine and glossy, as can be seen from pitch visual inspection, after processing temperature raises, the modifying asphalt uniformity of preparation, the modifying asphalt storage-stability of preparation, the modifying asphalt softening temperature of preparation is higher, and processing temperature low time, the modifying asphalt outward appearance of preparation is coarse, and storage is also unstable.But processing temperature neither be more high better, the too high aging embrittlement that may cause matrix pitch and rubber powder of temperature, this has negative impact to low-temperature ductility, in upper table, 230 DEG C of ductilities decline, show that processing temperature is no more than 220 DEG C, then stores instability at 170 DEG C compared with the modifying asphalt prepared under low processing temperature.
Embodiment 11-12
High-strength boxshear apparatus is adopted to shear being uniformly mixed rear rubber powder modified asphalt, relatively high speed shear operation and convention stir are on the impact of rubber powder performance, by 1% 2,4,7,9-tetramethyl--5-decine-4,7-glycol weight percent when 35% rubber powder adopt under 190 DEG C of conditions or do not adopt high speed shear to prepare modifying asphalt, result is as table 4:
Table 4 high speed shear operation is to the influence research of rubber powder modified asphalt performance
From above-mentioned testing data result, the modifying asphalt outward appearance not adopting high speed shear operation to prepare is coarse, can see that rubber powder particle exists, and modifying asphalt storage is unstable.
Adopt DSR test and the rubber powder modified asphalt of bending the small beam experiment to embodiment 1 and embodiment 2 to carry out PG classification research, test-results is as table 5, table 6:
Table 5DSR test-results
Table 6BBR test-results (after RTFOT+PAV)
| Pitch | Test temperature/DEG C | m | S（MPa） |
| Jia Deshi No. 70 pitches | -12 | 0.274 | 305 |
| Embodiment 1 | -12 | 0.323 | 251 |
| Embodiment 2 | -12 | 0.356 | 170 |
| Embodiment 1 | -18 | 0.149 | 322 |
| Embodiment 2 | -18 | 0.268 | 385 |
As can be seen from PG classification test, the PG of matrix pitch is classified as PG64-16, and embodiment 1 even with the PG classification of two kinds of rubber powder modified asphalts of embodiment 2 be PG70-22, show that rubber powder modified asphalt high temperature prepared by the present invention and low-temperature performance are all improved.
Embodiment 13-17
The sewer oil adopted in the present invention is obtain by after the life sewer oil reclaimed after filtration solid impurity, thermal dehydration.Described sewer oil water content is less than 0.3wt% by mass percentage.
Emulsified rubber powder-modified asphalt is prepared in table 7 ratio:
(1) rubber powder modified asphalt is prepared: by 2,4,7,9-tetramethyl--5-decine-4,7-glycol, rubber powder join in pitch, by colloidal mill or high-speed shearing emulsion machine, rubber powder is milled down to median size and is approximately less than 0.2 millimeter under the condition of 185-220 DEG C, then under the condition of 185-220 DEG C, stirring reaction 75-300 minute, makes rubber powder modified asphalt.
(2) then rubber powder modified asphalt is heated to 125 DEG C, makes it, in complete melted state, to add sewer oil by proportioning wherein, stirred and make it be mixed evenly, obtain compounded rubber powder-modified asphalt;
(3) prepare soap lye: by proportioning, the MQK-1D emulsifying agent that MeadWestvaco company produces is added to the water, and add hydrochloric acid soln adjustment acid number, make solution PH=2.1, stir, and be warming up to 60 DEG C.
(4) by step 2) in gained soap lye mixing in gained compounded rubber powder-modified asphalt and step 3), described emulsified rubber powder-modified asphalt composition can be obtained for 1 ~ 3 time by colloidal mill grinding.Its performance is in table 7.
Table 7
Testing method: 1, evaporation residue softening temperature, DEG C: ASTMD36, Chinese T 0606-2000
2, evaporation residue viscosity, Pa.s: Chinese T 0625-2000
3, evaporation residue BBR index S, Mpa, m:AASHTO:TP1-98
4, evaporation residue DSR index G*/sin δ, Pa:AASHTOTP5-93
As can be seen from Table 7: the softening temperature of embodiment 13-17 gained emulsified rubber powder-modified asphalt composition, 60 DEG C of viscosity and DSR index can meet normal micro-surface area using function, illustrate that emulsified rubber powder-modified asphalt composition of the present invention has good high-temperature behavior.Simultaneously,-24 DEG C of BBR indexs of embodiment 13-17 gained emulsified rubber powder-modified asphalt composition all meet SHRP Pavement Low performance specification AASHTOMP1:S<300Mpa, m>0.3, illustrates that embodiments of the invention have excellent low-temperature performance.
Claims (6)
1. an emulsified rubber powder-modified asphalt composition, comprises the component of following weight part:
With the total weight of rubber powder modified asphalt, the composition of described rubber powder modified asphalt and the weight percent of each component as follows:
Rubber powder 30 ~ 65wt%;
2,4,7,9-tetramethyl--5-decine-4,7-glycol, 0.5 ~ 2.5wt%;
Pitch surplus.
2. emulsified rubber powder-modified asphalt composition according to claim 1, comprises the component of following weight part:
3. emulsified rubber powder-modified asphalt composition according to claim 1, is characterized in that, with the total weight of rubber powder modified asphalt, the composition of described rubber powder modified asphalt and the weight percent of each component as follows:
Rubber powder 35 ~ 55wt%;
2,4,7,9-tetramethyl--5-decine-4,7-glycol, 0.5 ~ 2.5wt%;
Pitch surplus.
4. emulsified rubber powder-modified asphalt composition according to claim 1, is characterized in that, described emulsifying agent is MQK-1D emulsifying agent.
5. the emulsified rubber powder-modified asphalt composition according to the arbitrary claim of claim 1-4, is characterized in that, described emulsified rubber powder-modified asphalt composition obtains via following method:
(1) rubber powder modified asphalt is prepared: by proportioning by 2,4,7,9-tetramethyl--5-decine-4,7-glycol, rubber powder join in pitch, by colloidal mill or high-speed shearing emulsion machine, rubber powder is milled down to median size and is less than 0.2 millimeter under the condition of T1=185-220 DEG C, then under the condition of T1=185-220 DEG C, stirring reaction 75-300 minute, namely prepares rubber powder modified asphalt;
(2) under the condition of 120-180 DEG C, by proportioning, sewer oil is joined in described rubber powder modified asphalt, obtain compounded rubber powder-modified asphalt;
(3) prepare soap lye: be added to the water by emulsifying agent by proportioning, and add hydrochloric acid soln regulate pH be 1.8 ~ 2.2, be heated to T2=45 ~ 90 DEG C, namely prepare soap lye;
(4) by gained soap lye mixing in gained compounded rubber powder-modified asphalt in step (2) and step (3), emulsifying device is passed through
Grinding can obtain described emulsified rubber powder-modified asphalt composition.
6. the emulsified rubber powder-modified asphalt composition according to the arbitrary claim of claim 1-4 is used for the purposes in bituminous pavement paving.
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| CN104804443A (en) * | 2015-04-28 | 2015-07-29 | 上海路惠环保科技有限公司 | Emulsified asphalt and preparation method and application thereof |
| CN108729332B (en) * | 2018-05-18 | 2024-04-23 | 广东金长成桥梁隧道科技有限公司 | Novel nanometer ultrathin maintenance and fresh-keeping spray layer and construction process thereof |
| CN109867970A (en) * | 2019-01-25 | 2019-06-11 | 湖北国创高新材料股份有限公司 | A kind of foam color modified emulsifying asphalt and its preparation method and application |
| CN110591399A (en) * | 2019-09-23 | 2019-12-20 | 黄河三角洲京博化工研究院有限公司 | Modified emulsified asphalt with high viscosity and high softening point and preparation method thereof |
| CN111484631A (en) * | 2020-05-19 | 2020-08-04 | 上海群康沥青科技股份有限公司 | Modified emulsified asphalt for micro-surfacing and preparation method and application thereof |
| CN112979217A (en) * | 2021-04-19 | 2021-06-18 | 广东四通建材股份有限公司 | Noctilucent cold-laid permeable asphalt and preparation method thereof |
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| CN101831188A (en) * | 2010-05-13 | 2010-09-15 | 上海群康沥青科技有限公司 | Modified asphalt composition with high content of rubber powder and preparation and application thereof |
| CN103289105A (en) * | 2013-05-09 | 2013-09-11 | 东南大学 | Method for preparing emulsified rubber asphalt |
| CN103497521A (en) * | 2013-09-18 | 2014-01-08 | 交通运输部公路科学研究所 | Vegetable oil modified asphalt composite and preparation method thereof |
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| CN101831188A (en) * | 2010-05-13 | 2010-09-15 | 上海群康沥青科技有限公司 | Modified asphalt composition with high content of rubber powder and preparation and application thereof |
| CN103289105A (en) * | 2013-05-09 | 2013-09-11 | 东南大学 | Method for preparing emulsified rubber asphalt |
| CN103497521A (en) * | 2013-09-18 | 2014-01-08 | 交通运输部公路科学研究所 | Vegetable oil modified asphalt composite and preparation method thereof |
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