CN103911009A - 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 155
- 229920001971 elastomer Polymers 0.000 title claims abstract description 155
- 239000005060 rubber Substances 0.000 title claims abstract description 155
- 239000000843 powder Substances 0.000 title claims abstract description 116
- 238000002360 preparation method Methods 0.000 title abstract description 29
- 239000000203 mixture Substances 0.000 claims abstract description 41
- 239000003995 emulsifying agent Substances 0.000 claims abstract description 9
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 6
- 238000000034 method Methods 0.000 claims description 14
- 238000010008 shearing Methods 0.000 claims description 11
- 238000006243 chemical reaction Methods 0.000 claims description 10
- 238000003756 stirring Methods 0.000 claims description 10
- 239000000344 soap Substances 0.000 claims description 8
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- 230000001804 emulsifying effect Effects 0.000 claims description 2
- 238000002156 mixing Methods 0.000 abstract description 4
- 230000000903 blocking effect Effects 0.000 abstract 1
- 239000008162 cooking oil Substances 0.000 abstract 1
- 239000011295 pitch Substances 0.000 description 33
- 238000012545 processing Methods 0.000 description 16
- 239000002699 waste material Substances 0.000 description 12
- 238000012360 testing method Methods 0.000 description 10
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- 238000005516 engineering process Methods 0.000 description 7
- 239000000463 material Substances 0.000 description 7
- 238000004945 emulsification Methods 0.000 description 5
- 239000002174 Styrene-butadiene Substances 0.000 description 4
- MTAZNLWOLGHBHU-UHFFFAOYSA-N butadiene-styrene rubber Chemical compound C=CC=C.C=CC1=CC=CC=C1 MTAZNLWOLGHBHU-UHFFFAOYSA-N 0.000 description 4
- 239000006229 carbon black Substances 0.000 description 4
- 239000003795 chemical substances by application Substances 0.000 description 4
- 150000001875 compounds Chemical class 0.000 description 4
- 238000006477 desulfuration reaction Methods 0.000 description 4
- 230000023556 desulfurization Effects 0.000 description 4
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- 229920003048 styrene butadiene rubber Polymers 0.000 description 4
- 229920000428 triblock copolymer Polymers 0.000 description 4
- 239000004215 Carbon black (E152) Substances 0.000 description 3
- 230000009471 action Effects 0.000 description 3
- 230000004913 activation Effects 0.000 description 3
- 238000010276 construction Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 229930195733 hydrocarbon Natural products 0.000 description 3
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- 229910001220 stainless steel Inorganic materials 0.000 description 2
- 239000010935 stainless steel Substances 0.000 description 2
- 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
- 101100202447 Drosophila melanogaster sav gene Proteins 0.000 description 1
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- 238000004458 analytical method Methods 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
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- 239000003595 mist Substances 0.000 description 1
- 239000003607 modifier Substances 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 229920000642 polymer Polymers 0.000 description 1
- 238000004321 preservation Methods 0.000 description 1
- 238000010298 pulverizing process Methods 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
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- 125000003698 tetramethyl group Chemical group [H]C([H])([H])* 0.000 description 1
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- 231100000167 toxic agent Toxicity 0.000 description 1
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Abstract
The invention provides an emulsified rubber powder modified asphalt composition, comprising the following components in parts by weight: 50.0-60.0 parts of rubber powder modified asphalt, 5.0-10.0 parts of illegal cooking oil, 1.0-3.0 parts of emulsifier and 20.0-40.0 parts of water. The invention also further provides a preparation method of the emulsified rubber powder modified asphalt composition and an application thereof. According to the emulsified rubber powder modified asphalt composition disclosed by the invention, the preparation method is environment-friendly and feasible, the emulsified rubber powder modified asphalt composition is high in mixing amount of rubber powder, easy to emulsify and modify, stable to store, and good in high temperature and low temperature performances and blocking property, and can be applied to an asphalt mixture just as common SBS modified asphalt, and other performance requirements of road engineering on the asphalt are met.
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
Modifying asphalt at present large-scale application in road engineering, but the SBS modifying asphalt that current modifying asphalt is mainly prepared as properties-correcting agent using styrene butadiene triblock copolymer, major advantage is high temperature and low temperature performance excellent, can stablize storage, but the problem of this modifying asphalt maximum is the high cost of styrene butadiene triblock copolymer, the price of its styrene butadiene triblock copolymer is generally 3-5 times of asphalt price, causes the modifying asphalt high cost of preparation.
The modifying asphalt that rubber powder is prepared as properties-correcting agent is also widely applied at present on road, it is applied as the application of rubber asphalt the most widely, its feature is to add more than 15% 20-40 object rubber powder in pitch, the viscosity that modifying asphalt 177 is spent reaches 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 of preparing can be for preventing that reflection crack from appearring in road surface, document Arizona Department of Transportation Standard specifications for road & bridge construction, document ASTM D6144-97 (Standard Specification for Asphat-Rubber Binder) has all described this technology in detail, in addition U.S. Pat 4166049, 4840316, 5109041, 5334641 have also described this technology, the shortcoming of this technology maximum be compound medium pitch consumption compared with plain asphalt compound exceed 50% with, cause asphalt high cost, in addition owing to can not solving storage stability problem, modifying asphalt must now be mixed existing use at the scene, has restricted it and has been widely used.
In order to address this problem, U.S. Pat 5704971 adopts up to the high temperature preparation condition of 250 degree and adds the method for a large amount of oxygen can prepare the rubber powder modified asphalt of storage-stability, modifying asphalt prepared by this method can be for asphalt as conventional SBS modifying asphalt, and need in compound, not adopt higher asphalt content, but the shortcoming of this technology is to prepare the excess Temperature of modifying asphalt, under general condition, be difficult to reach, and energy consumption is larger, environmental pollution is also very large, and in pitch, the addition of rubber powder is generally no more than 15%, 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 problem 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 to be at 150-200 ℃ in temperature, mixing waste tire rubber powder, thermoplastic elastomer and the stablizer of the different-grain diameter by 60 mesh sieve are joined in basic asphalt by a certain percentage through the processing 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 the asphalt modified with desulfurized rubber powder that a kind of Road construction is used, because properties-correcting agent is desulfurization rubber powder, it has good dissolving swelling property in pitch, simultaneously because desulfurization has produced more active group at vulcanized rubber powder, be conducive to the chemical bonding of rubber powder with pitch, and compatilizer can further increase the interaction of rubber powder and pitch, therefore the modifying asphalt that this invention obtains has good 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 waste Crumb rubber modified asphalt composition that improves waste Crumb rubber modified asphalt stability in storage.Application number/patent No. 200580049453 discloses a kind of method with waste rubber powder modifying asphalt.Application number/patent No. 200510022110 discloses a kind of modifying asphalt and preparation method thereof, and it is at normal temperatures activator tetramethyl alkynediols to be mixed in scrap tire powder in proportion, mixes and stirs wetting activated rubber powder; In proportion pitch and activated rubber powder are added to fully stirring in reactor again, temperature of reaction is risen to 170-180 ℃, isothermal reaction 0.5-1 hour, after having reacted, naturally cools to normal temperature and obtains modifying asphalt.200510084002 disclose rubber powder-bituminous composition of a kind of steady heat storage and preparation method thereof.Application number/patent No. 200610047442 relates to a kind of preparation method who is 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 that improves stability in storage, first adopt one or more fluid additives to carry out spray treatment to rubber powder, then the waste Crumb rubber of processing is joined in basic asphalt, under optimal temperature, can make rubber powder modified asphalt of the present invention through high-shear or colloidal mill device processes for some time.The disclosed modifying asphalt of application number/patent No. 200710118026 is by the analysis of the degradation selectivity processing condition in pitch to shoddy, degraded the shoddy recovery of macromole performance and Study on Preparation Technology of waste rubber powder modified asphalt in pitch, develop and a kind ofly degrade and crosslinked modifying asphalt and method for producing thereof again by desulfurization, gained modifying asphalt can form homogeneous mixture system, reduce the viscosity of modifying asphalt, and improved 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 activation treatment being carried out in the surface of waste tyre rubber powder, then the waste tyre rubber powder after activation is added in heated bitumen and fully stirred, swelling, shear, grind, then inject growth tank and breed 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 made by carrying out high shear mixing at the temperature at 150-170 ℃, make interface modifier bring into play its maximum efficiency, improve the consistency of waste Crumb rubber and rubber, and then can improve in use high and low temperature performance and the ageing-resistant performance of pitch, reach simultaneously and simplify technique, reduce costs, realize waste recycling, reduce the object of 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 recycling through " desulfurization ", under curable component existence condition, reacts and makes in 130-250 ℃ with pitch.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 also 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 be for asphalt as conventional SBS modifying asphalt; Meet road engineering other performance requriements to pitch.
But the standby rubber powder modified asphalt of above these patent systems, all because viscosity is excessive, cannot be prepared 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, and in the gross weight of rubber powder modified asphalt, the composition of described rubber powder modified asphalt and the weight percent of each component are as follows:
Rubber powder 30～65wt%;
2,4,7,9-tetramethyl--5-decine-4,7-glycol 0.5～2.5wt%;
Pitch surplus.
Preferably, in the gross weight of rubber powder modified asphalt, the composition of described rubber powder modified asphalt and the weight percent of each component are 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 low meeting of rubber hydrocarbon content causes the poor problem of rubber powder modified asphalt adhesivity of preparation.
Described 2,4,7,9-tetramethyl--5-decine-4, the molecular formula of 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 the rubber powder that carbon black content is 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 such as can be selected from No. 50, No. 70, No. 90, No. 110 at the conventional substrate pitch.
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 is after solid impurity, thermal dehydration, to be obtained after filtration by the life sewer oil reclaiming.Life sewer oil refer to people in daily life making food process, produce various can not be edible again containing toxic substance oil and food and drink after sewer oil in food residual, mainly comprise three major types: cloaca oil (sewer oil of narrow sense), swill oil (hogwash fat), frying oil.Cloaca oil refers to the greasy floating matter of fishing in the trench oil trap such as hotel, restaurant, is chocolate liquid paste, has sour foul odour.Swill oil refers to the upper strata oil slick after leftovers, leftovers (common name swill) are collected, and is golden yellow to garnet through refining, and has sour taste.Frying oil refers at high temperature repeatedly for fried food, and bad change occurs, and can not continue edible grease again.
Described sewer oil water content is less than 0.3wt% by mass percentage.
Preferably, described emulsifying agent is selected from and splits slowly any in fast solidifying type emulsifying agent.More excellent is MQK-1D emulsifying agent, can be purchased from MeadWestvaco company of the U.S..
The preparation method of emulsified rubber powder-modified asphalt of the present invention comprises the steps:
(1) prepare rubber powder modified asphalt: by proportioning by 2,4,7,9-tetramethyl--5-decine-4,7-glycol, rubber powder join in pitch, and under the condition of T1=185-220 ℃, by colloidal mill or high-speed shearing emulsion machine, rubber powder is milled down to median size and is less than 0.2 millimeter, then under the condition of T1=185-220 ℃, stirring reaction 75-300 minute, prepares rubber powder modified asphalt;
(2) under the condition of 120-180 ℃, by proportioning, sewer oil is joined in described rubber powder modified asphalt, obtain compounded rubber powder-modified asphalt;
(3) prepare soap lye: by proportioning, emulsifying agent is added to the water, and add hydrochloric acid soln regulate PH be 1.8～2.2, be heated to T2=45～90 ℃, prepare soap lye;
(4) by step 2) in gained compounded rubber powder-modified asphalt and step 3) gained soap lye mix, grind and can make described emulsified rubber powder-modified asphalt composition by emulsifying device.
Described colloidal mill refers to by stainless steel, semi-stainless steel colloidal mill and forms, the ultimate principle of colloidal mill is fluid or semi-fluid material determining between tooth and moving tooth by a high speed relative interlock, make material be subject to powerful shearing force, the effect such as friction and high-frequency vibration, effectively by pulverizing, emulsification, homogeneous, mixing.
Described high-speed shearing emulsion machine is to be made up of the stator that turns of three layers or the interlock of multilayer antithesis, material by shearing layer by layer, dispersion, emulsification, material to be machined is inhaled into rotor and bears shearing action, thereby 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 is with its high linear speed, makes material be subject to shearing, centrifugal extruding, liquid layer friction turning, in the gap of stator, clash into and tear and the comprehensive action such as turbulent flow, thereby reaches the effect of dispersion, grinding, emulsification.It at a high speed requires rotating speed should reach per minute 2000 to turn above.
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-table place road surface, crushed stone sealing or mist sealing.The addition of described emulsified rubber powder-modified asphalt is generally 7～14% of building stones weight.The prepared emulsified rubber powder-modified asphalt of the present invention can improve the adhesivity of building stones and pitch while being used for micro-table place, 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 exceedes 35% when above, having cannot process operation, store problem unstable and that bituminous composition is inhomogeneous.The present invention is by the screening of formula, simultaneously by preparation technology's appropriate design, solved after rubber powder volume increases, cause cannot process operation, store the problems such as unstable and bituminous composition is inhomogeneous.The rubber powder modified asphalt rubber powder volume making is high, with low cost, storage-stability; There is good high temperature, low temperature and adhesion property; And by adding appropriate sewer oil, can make the rubber powder modified asphalt of preparation can be easy to emulsification, simultaneously because the sewer oil adopting at high temperature can not volatilize, while therefore at high temperature joining in rubber powder modified asphalt, can not produce a large amount of volatility flammable explosive gas, production safety.Gained emulsified rubber powder-modified asphalt composition of the present invention can not need to adopt higher asphalt content for 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 reduce production costs.
Beneficial effect of the present invention:
(1) the present invention is owing to having adopted the rubber powder modified asphalt of high volume and having introduced wherein a small amount of sewer oil simultaneously, not only make the very easily emulsification of described rubber powder modified asphalt, also make easily preparation and production of emulsified rubber powder-modified asphalt composition of the present invention, storage-stability simultaneously.
(2) formula of the present invention, compared with other agglutinate formula, also has better adhesivity, can prevent bituminous pavement after making occur Moisture Damage, loose, disease and the rut such as 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, easy bellding while having solved common emulsified asphalt for micro-table place, the technical problem that hot strength is low and low temperature is easy to crack; Described emulsified rubber powder-modified asphalt can obviously improve sealing high-temperature stability and low-temperature cracking-resistance thereof while being used for micro-table place, has good application prospect.
Embodiment
Further to set forth the present invention, should be understood that embodiment is not for limiting the scope of the invention below in conjunction with embodiment.
Unless explanation below, pitch used is and adds No. 70 pitches of moral scholar as matrix pitch, 2,4,7,9-tetramethyl--5-decine-4,7-glycol is that Shanghai Hai Bi scientific & trading Co., Ltd. produces, molecular weight is 226, and rubber powder used is the prepared rubber powder of truck tyre that Nanjing Dong Hao rubber powder company limited produces, 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, and under the condition of 185-220 ℃, 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, then under the condition of 185-220 ℃, stirring reaction 75-300 minute, makes rubber powder modified asphalt.
Formula, processing parameter and the test-results of embodiment 1-4 is 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 ℃ 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 is sheared 20 minutes at 190 ℃ of high-speed shearing emulsion machines, again under the condition of 190 ℃, stirring reaction 180 minutes, different 2,4,7,9-tetramethyl--5-decine-4, the test-results after 7-glycol weight percent adds is as table 2:
Table 22,4,7,9-tetramethyl--5-decine-4, the impact of 7-glycol on rubber powder modified asphalt performance
From above-mentioned testing data result, 2,4,7,9-tetramethyl--5-decine-4, adding of 7-glycol is all improved rubber powder modified asphalt softening temperature and 5 ℃ of ductilities; Improvement to storage stability is obvious; Do not add 2,4,7,9-tetramethyl--5-decine-4, the modifying asphalt of 7-glycol, because viscosity is excessive, causes processing.
Embodiment 8-10
By 1.5% 2,4,7,9-tetramethyl--5-decine-4,7-glycol weight percent when 40 order rubber powders high-speed shearing emulsion machine under different processing temperatures of 35% is sheared 20 minutes, stirring reaction 90 minutes again, studies the rubber powder modified asphalt performance of preparing under different processing temperatures, and 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, can overcome the too high modifying asphalt causing of rubber powder volume coarse, store the problems such as unstable.After processing temperature raises, the aggravation of system molecular activity, rubber powder molecular structure launches more complete more thorough, and whole system is more fine and glossy level and smooth, observe and can find out from pitch outward appearance, 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 is when low, the modifying asphalt outward appearance of preparation is coarse, stores also unstable.But processing temperature neither be more high better, excess Temperature may cause the aging embrittlement of matrix pitch and rubber powder, this has negative impact to low-temperature ductility, in upper table, 230 ℃ of ductilities decline, show that processing temperature should not exceed 220 ℃, stores unstable at 170 ℃ compared with the modifying asphalt of preparing under low processing temperature.
Embodiment 11-12
Adopt high-strength boxshear apparatus to shear being uniformly mixed rear rubber powder modified asphalt, relatively high speed shear operation and conventional impact of stirring rubber powder performance, by 1% 2,4,7,9-tetramethyl--5-decine-4,7-glycol weight percent when 35% rubber powder adopts or does not adopt high speed shear to prepare modifying asphalt under 190 ℃ of conditions, and result is as table 4:
The impact research of table 4 high speed shear operation on rubber powder modified asphalt performance
From above-mentioned testing data result, the modifying asphalt outward appearance that does not adopt high speed shear operation to prepare is coarse, can see that rubber powder particle exists, and modifying asphalt storage is unstable.
Adopt dynamic shear rheological test and bending the small beam experiment to carry out PG classification research to the rubber powder modified asphalt of embodiment 1 and embodiment 2, test-results is as table 5, table 6:
Table 5DSR test-results
Table 6BBR test-results (after RTFOT+PAV)
| Pitch | Test temperature/℃ | m | S（MPa） |
| No. 70 pitches of Jia Deshi | -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 |
Can be found out by PG classification test, the PG of matrix pitch is classified as PG64-16, and the PG classification of embodiment 1 and two kinds of rubber powder modified asphalts of embodiment 2 even be PG70-22, show that rubber powder modified asphalt high temperature and low-temperature performance prepared by the present invention are all improved.
Embodiment 13-17
The sewer oil adopting in the present invention serve as reasons reclaim life sewer oil after solid impurity, thermal dehydration, obtain after filtration.Described sewer oil water content is less than 0.3wt% by mass percentage.
Prepare emulsified rubber powder-modified asphalt in table 7 ratio:
(1) prepare rubber powder modified asphalt: by 2,4,7,9-tetramethyl--5-decine-4,7-glycol, rubber powder join in pitch, and under the condition of 185-220 ℃, 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, then under the condition of 185-220 ℃, stirring reaction 75-300 minute, makes rubber powder modified asphalt.
(2) then rubber powder modified asphalt is heated to 125 ℃, makes it to be complete melted state, add sewer oil by proportioning wherein, stirred it is mixed evenly, obtain compounded rubber powder-modified asphalt;
(3) prepare soap lye: by proportioning, the MQK-1D emulsifying agent that MeadWestvaco company is produced is added to the water, and add hydrochloric acid soln to regulate acid number, make solution PH=2.1, stir, and be warming up to 60 ℃.
(4) by step 2) in gained compounded rubber powder-modified asphalt and step 3) gained soap lye mix, grind and can make described emulsified rubber powder-modified asphalt composition for 1～3 time by colloidal mill.Its performance is in table 7.
Table 7
Testing method: 1, evaporation residue softening temperature, ℃: ASTM D36, 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:AASHTO TP5-93
As can be seen from Table 7: the softening temperature of embodiment 13-17 gained emulsified rubber powder-modified asphalt composition, 60 ℃ of viscosity and DSR index can meet normal micro-table place and use function, illustrate that emulsified rubber powder-modified asphalt composition of the present invention has good high-temperature behavior.Simultaneously,-24 ℃ of BBR indexs of embodiment 13-17 gained emulsified rubber powder-modified asphalt composition all meet SHRP Pavement Low performance specification AASHTO MP1:S<300Mpa, m>0.3, illustrates that embodiments of the invention have excellent low-temperature performance.
Claims (7)
1. an emulsified rubber powder-modified asphalt composition, comprises the component of following weight part:
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, in the gross weight of rubber powder modified asphalt, the composition of described rubber powder modified asphalt and the weight percent of each component are as follows:
Rubber powder 30～65wt%;
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 3, is characterized in that, in the gross weight of rubber powder modified asphalt, the composition of described rubber powder modified asphalt and the weight percent of each component are as follows:
Rubber powder 35～55wt%;
2,4,7,9-tetramethyl--5-decine-4,7-glycol 0.5～2.5wt%;
Pitch surplus.
5. emulsified rubber powder-modified asphalt composition according to claim 1, is characterized in that, described emulsifying agent is MQK-1D emulsifying agent.
6. according to the emulsified rubber powder-modified asphalt composition described in the arbitrary claim of claim 1-5, it is characterized in that, described emulsified rubber powder-modified asphalt composition makes via following method:
(1) prepare rubber powder modified asphalt: by proportioning by 2,4,7,9-tetramethyl--5-decine-4,7-glycol, rubber powder join in pitch, and under the condition of T1=185-220 ℃, by colloidal mill or high-speed shearing emulsion machine, rubber powder is milled down to median size and is less than 0.2 millimeter, then under the condition of T1=185-220 ℃, stirring reaction 75-300 minute, prepares rubber powder modified asphalt;
(2) under the condition of 120-180 ℃, by proportioning, sewer oil is joined in described rubber powder modified asphalt, obtain compounded rubber powder-modified asphalt;
(3) prepare soap lye: by proportioning, emulsifying agent is added to the water, and add hydrochloric acid soln regulate pH be 1.8～2.2, be heated to T2=45～90 ℃, prepare soap lye;
(4) by step 2) in gained compounded rubber powder-modified asphalt and step 3) gained soap lye mix, grind and can make described emulsified rubber powder-modified asphalt composition by emulsifying device.
7. the purposes for bituminous pavement paving according to the emulsified rubber powder-modified asphalt composition described in the arbitrary claim of claim 1-5.
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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 |
| CN108729332A (en) * | 2018-05-18 | 2018-11-02 | 广东金长成桥梁隧道科技有限公司 | New spray-up and its construction technology are protected in a kind of very thin maintenance of novel nano |
| 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 |
| 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 |
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| 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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| CN103911009B (en) | 2016-04-13 |
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