CN104004368B - A kind of interfacial spreading agent for asphalt pavement warm mixing regeneration and warm mix regeneration composite modifier - Google Patents
A kind of interfacial spreading agent for asphalt pavement warm mixing regeneration and warm mix regeneration composite modifier Download PDFInfo
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- CN104004368B CN104004368B CN201410208502.3A CN201410208502A CN104004368B CN 104004368 B CN104004368 B CN 104004368B CN 201410208502 A CN201410208502 A CN 201410208502A CN 104004368 B CN104004368 B CN 104004368B
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Abstract
The invention provides a kind of interfacial spreading agent for asphalt pavement warm mixing regeneration, obtained by substituting group silane, polyethers and catalyst reaction; Wherein substituting group silane is amino, alkoxyl group or epoxy group(ing) substituted silane, and catalyzer is Platinic chloride, and polyethers is allyl polyether.When the interfacial spreading agent that the present invention obtains makes an addition in old asphalt mixture, the Bituminous concrete surface be stripped out rapidly redistributes in new and old surface of aggregate, by chemical reaction, the pavement performance of Bituminous concrete surface film is repaired, achieve the recycle of Bituminous concrete surface, and enhance old gather materials with bituminous cements wrap effect, ensure that the pavement performance of regenerating mixture.The present invention also provides a kind of warm mix to regenerate composite modifier, obtained by the raw material comprising warm-mixing agent, basic oil content and interfacial spreading agent, this properties-correcting agent significantly improves old asphalt mixture mixed ratio and utilization ratio, and improve reclaimed asphalt mixture pavement performance, water stability is good simultaneously.
Description
Technical field
The present invention relates to pitch warm mix regenerating mixture manufacturing technology field, be specifically related to a kind of interfacial spreading agent for asphalt pavement warm mixing regeneration and warm mix regeneration composite modifier.
Background technology
Along with the development of China's bituminous concrete pavement, repair or overhaul time during increasing bituminous pavement enters in succession, a large amount of old asphalt concretes is faced with the problem of piling up or recycling.In line with resources conservation, eco-friendly guiding theory, regeneration is carried out to waste asphalt concrete there is very strong necessity and urgency.
Regeneration techniques mainly hot recycling and cold renewal two kinds of modes of current asphalt, they do not obtain significant progress due to its respective defect.Although cold recycled asphalt mixture has very large advantage in environmental protection, energy consumption, because its pavement performance has very large gap compared with hot-mix asphalt mixture, the repairing of bituminous pavement, the cutting optimal of light traffic road surface and middle traffic and basic unit can only be used for; Heat regeneration asphalt mixture realizes Bituminous concrete surface film in RAP peel off mutually with old gathering materials mainly through higher temperature of mixing and stirring, and realizes the old secondary gathered materials and wrap, but secondary is seriously aging, and the performance of regenerating mixture is difficult to be ensured; And cause old asphalt mixture addition content limited, be generally no more than 30% of reclaimed asphalt mixture.
In order to overcome the defect of hot recycling, cold renewal, the warm mix that has been born regeneration techniques.Warm mix regeneration techniques makes regenerating mixture carry out at a lower temperature mixing and stirring, paving and compacting by adding warm-mixing agent, and it mixes and stirs temperature generally at 110 ~ 130 DEG C, and comparatively hot recycling reduces 40 ~ 50 DEG C.But the research both at home and abroad about warm mix regeneration techniques is all few, is substantially still in the exploratory study stage, also there is suitable limitation and one-sidedness to the understanding of warm mix regeneration techniques.Current ongoing research is substantially all realize " warm mix regeneration " by adding warm-mixing agent from technological angle, and wherein in RAP, Bituminous concrete surface film directly affects new pitch and wraps effect to RAP, thus has a strong impact on the performance of regenerating mixture.In addition, also there is the problems such as new asphalt content is large, economic benefit is not remarkable from the method for technological angle realization " warm mix regeneration ".
Main contents
The object of this invention is to provide a kind of interfacial spreading agent for asphalt pavement warm mixing regeneration, this dispersion agent, in the warm mix regenerative process of bituminous pavement, can make new pitch effective to wrapping of RAP.
Another object of the present invention is to provide the effective warm mix regeneration composite modifier of a kind of warm mix.
The object of the present invention is achieved like this:
For an interfacial spreading agent for asphalt pavement warm mixing regeneration, it is characterized in that: it is obtained by substituting group silane, polyethers and catalyst reaction; Wherein said substituting group silane is amino, alkoxyl group or epoxy group(ing) substituted silane; Described catalyzer is Platinic chloride; Described polyethers is allyl polyether.
Above-mentioned amino substituted silane can be one or more mixing in 3-aminopropyl triethoxysilane, 3-aminopropyltriethoxy diethoxy silane, N-(β-aminoethyl-γ-aminopropyl) Trimethoxy silane.
Above-mentioned alkoxy substituted silane can be one or more mixing in methyltrimethoxy silane, Union carbide A-162, octyl group Trimethoxy silane.
Above-mentioned epoxy group(ing) substituted silane can be 3-(2,3-epoxy third oxygen) propyl trimethoxy silicane, 3-(2,3-epoxy third oxygen) hydroxypropyl methyl diethoxy silane, one or more mixing in β-(3,4-epoxy cyclohexyl) ethyl trimethoxy silane.
Above-mentioned allyl polyether can be the one in APEG-2000, APEG-2400, HPEG-2400.
Wrap effect in order to improve new pitch to RAP, the present invention is preferably by 100 parts, substituting group silane, and polyethers 20 ~ 60 parts, catalyzer 2 ~ 10 parts reaction is obtained, with parts by weight.
Further economize on resources, reduce the consumption of new pitch, 100 parts, above-mentioned raw materials proportion optimization substituting group silane, polyethers 30 ~ 50 parts, catalyzer 4 ~ 7 parts; More preferably 100 parts, substituting group silane, polyethers 40 ~ 45 parts, catalyzer 5 ~ 6 parts.
Above-mentioned interfacial spreading agent is obtained like this: add in reactor by the polyethers of corresponding proportion, substituting group silane, heat temperature raising, and constantly stir, open condensing works; When being warming up to 40 ~ 60 DEG C, add catalyzer Platinic chloride, be warming up to 80 ~ 90 DEG C, react 3 ~ 5 hours; Be cooled to less than 60 DEG C after question response terminates, add the acid produced in appropriate bases neutralization reaction process, filter, underpressure distillation removing by product and the raw material for reaction, both.
The preferred heating in water bath of type of heating wherein, stirs preferred magnetic agitation; The preferred triethylamine of described alkali.
Specifically, join the reactor of band magnetic agitation and prolong by 100 parts of substituting group silane, 40 ~ 45 parts of polyethers, heating in water bath, slowly heats up under magnetic agitation, and opens condensing works; When temperature reaches 45 ~ 50 DEG C, add the catalyzer of 5 ~ 6 parts, continue to heat up.After temperature rises to 80 ~ 90 DEG C and be stable, the control reaction times is 4 ~ 5h; After reaction terminates, stop heating and naturally cooling, when question response system temperature is down to 30 ~ 60 DEG C, open reactor, add appropriate triethylamine, with the by-product hydrochloric acid produced in neutralization reaction process, filtering-depositing; Underpressure distillation, to remove excessive unreacted reactant (polyethers or substituting group silane), namely obtains the interfacial spreading agent that the present invention regenerates for asphalt pavement warm mixing.
Another object of the present invention is achieved in that
A kind of warm mix regeneration composite modifier, its raw material comprises warm-mixing agent, basic oil content, it is characterized in that: the raw material of this composite modifier also comprises interfacial spreading agent; And warm-mixing agent: interfacial spreading agent: the weight ratio of basic oil content is 1: 1 ~ 6: 2 ~ 8.
The preferred octadecyl acrylate of above-mentioned warm-mixing agent and styrene-maleic anhydride copolymer mix with the ratio of 100: 20 ~ 60, and described ratio is weight ratio.
The preferred machine oil of above-mentioned basic oil content and softening agent mix according to the ratio of 100: 3 ~ 7, and described ratio is weight ratio; The preferred dibutyl phthalate of described softening agent.
In order to strengthen the use properties of above-mentioned composite modifier, above-mentioned warm mix regeneration composite modifier is preferably according to warm-mixing agent: interfacial spreading agent: base oil is divided into the ratio of 1: 2 ~ 5: 3 ~ 6 to obtain.
Above-mentioned warm-mixing agent is that octadecyl acrylate and styrene-maleic anhydride copolymer directly mix according to corresponding proportion under normal temperature condition.
Above-mentioned base oil is divided into machine oil, softening agent according to after corresponding proportion mixing, stirs and makes it evenly obtained, the preferred stirring at low speed of described stirring, more preferably 1000 ~ 2000r/min, described churning time preferably 3 ~ 5 minutes at 110 ~ 130 DEG C.
Said engine oil can be waste and old lightweight machine oil.Described waste and old lightweight machine oil is by waste and old for motor car engine recovery machine oil, through stratification, dewaters, adds desiccant dryness, adds white lime and regulate its pH value 7 ~ 9 after filtration.
The preparation method of above-mentioned warm mix regeneration composite modifier, adopts following steps:
When basis oil content whipping temp is increased to 130 ~ 150 DEG C, add obtained interfacial spreading agent in proportion, stir 10 ~ 15 minutes under shearing rate is 4000 ~ 7000r/min condition;
Stop heating, stir speed (S.S.) is down to 1000 ~ 2000r/min, after temperature is reduced to 110 ~ 130 DEG C, adds warm-mixing agent in proportion, shear 5 ~ 10 minutes, both.
Specifically, a kind of warm mix regeneration composite modifier, is characterized in that being made up of following step:
Step 1: the preparation of raw material
The preparation of basis oil content: by waste and old for motor car engine recovery machine oil, through leaving standstill 5 ~ 8h layering, removing open fire; Adding appropriate anhydrous sodium sulfate drying, removing residual moisture further, filtering; Finally add a small amount of white lime alkali and regulate its acid-basicity, control its pH value 7 ~ 9, obtained waste and old lightweight machine oil; By obtained waste and old lightweight machine oil and dibutyl phthalate according to 100: 4 ~ 5 ratio mix, at 110 ~ 130 DEG C, stirring makes it even in 3 ~ 5 minutes, obtains basic oil content;
The preparation of interfacial spreading agent: by 100 parts of substituting group silane, 40 ~ 45 parts of allyl polyether (APEG-2000, APEG-2400 or HPEG-2400) join the reactor being with magnetic agitation and prolong, when heating in water bath is to 48 ~ 52 DEG C, add 4 ~ 5 Platinic chlorides and make catalyzer, proceed to 82 ~ 88 DEG C and stable after, the control reaction times is 4 ~ 5h; Stop heating, when question response system temperature is down to 40 ~ 60 DEG C, open reactor, add appropriate triethylamine, with the by-product hydrochloric acid produced in neutralization reaction process, filter and carry out underpressure distillation, obtain the interfacial spreading agent for asphalt pavement warm mixing regeneration;
The preparation of warm-mixing agent: octadecyl acrylate and styrene-maleic anhydride copolymer mix according under the ratio room temperature of 2: 1, obtained warm-mixing agent;
Step 2: the preparation of warm mix regeneration composite modifier:
Raise basic oil content whipping temp to 130 ~ 150 DEG C, add interfacial spreading agent obtained in step 1, stirring 10 ~ 15 minutes; Stop stirring and reducing whipping temp to 110 ~ 130 DEG C, continue to stir after adding the obtained warm-mixing agent of step 1, wherein warm-mixing agent: interfacial spreading agent: the ratio of basic oil content is 1: 3 ~ 4: 4 ~ 5; Controlling stir speed (S.S.) is that 4000 ~ 7000r/min shears 5 ~ 10 minutes, makes product warm mix of the present invention regeneration composite modifier.
The present invention has following beneficial effect:
1, the present invention is from the morphology and function angle of old asphalt mixture in whole warm mix regenerative process, start with from the angle of material prescription, invent a kind of interfacial spreading agent for warm mix regeneration, reduce mix temperature, to realize in RAP old gathers materials and to peel off mutually under warm mix condition with Bituminous concrete surface film, the secondary avoiding Bituminous concrete surface film is aging, has accomplished energy-saving and emission-reduction simultaneously; When interfacial spreading agent makes an addition in old asphalt mixture, the Bituminous concrete surface be stripped out rapidly redistributes in new and old surface of aggregate, sulfoxide group wherein in specific functional group and Bituminous concrete surface and carbonyl react, the pavement performance of Bituminous concrete surface film is repaired, achieve the recycle of Bituminous concrete surface, and enhance old gather materials with bituminous cements wrap effect, ensure that the pavement performance of regenerating mixture.The present invention reacts obtained interfacial spreading agent according to the polyethers of specific proportions, substituting group silane under the condition of catalyzer, the volume having broken RAP is difficult to the restriction more than 30%, significantly improve old asphalt mixture mixed ratio and utilization ratio, both saved resource and again reduced pollution.
2, the present invention obtains the interfacial spreading agent for warm mix regeneration at a lower temperature, and technique is simple, and conditional request is not harsh, easily realizes industrialized production.
3, properties-correcting agent of the present invention, by adding interfacial spreading agent in compound regeneration production process, and adds appropriate basic oil content and warm-mixing agent simultaneously.Each component play synergy, solve Bituminous concrete surface film secondary problem of aging, solve Bituminous concrete surface film function repair problem, solve the problem that RAP volume is low.Be embodied in and effectively can realize Bituminous concrete surface film in RAP and peel off mutually with old gathering materials, activate aged asphalt, the object wrapped with the cementation and the old good secondary that gathers materials that reach Bituminous concrete surface simultaneously; Break through the technical bottleneck that the tradition old material aspect ratio of hot recycling is difficult to breakthrough 30%, this warm mix regenerating mixture based on interface interaction, its old material mixes dosage substantially close to 50% of regenerating mixture total amount, ensures that the water stability of warm mix reclaimed asphalt mixture and other pavement performances meet code requirement simultaneously; Effectively can reduce regenerating mixture to mix and stir and compacting temperature, reduce energy consumption in compound production process, reduce harmful gas emission, reach and save construction costs and eco-friendly object.
4, production warm mix regeneration composite modifier of the present invention, do not need specific installation, security is high, easily realizes industrialization, and economic worth is high.
Accompanying drawing explanation
Below in conjunction with drawings and Examples, the invention will be further described:
Fig. 1: the water stability test-results figure of warm mix regenerating mixture.
Embodiment
The following examples are the further specific descriptions of carrying out the present invention.What be necessary to herein means out is that following examples are only used to further illustrate the present invention; can not be interpreted as limiting the scope of the invention, person skilled in art can make some nonessential improvement and adjustment according to the invention described above content to the present invention.
Part of the present invention is weight part, and described ratio is with mass ratio range; About described DEG C for DEG C fluctuating twice, as about 50 DEG C refer to 48 ~ 52 DEG C; Described reagent is commercially available prod, and wherein polyethers is purchased from Hai'an, Jiangsu petroleum chemical plant.
Embodiment 1
100 parts of triethoxyl silanes, 40 parts of APEG-2000 are joined the reactor being with magnetic agitation and prolong, and heating in water bath, slowly heats up under magnetic agitation, and opens condensing works; When temperature reaches about 50 DEG C, add 5 parts of catalyzer Platinic chlorides, continue to heat up.After temperature rises to 85 DEG C and is stable, the control reaction times is 4h: after reaction terminates, when question response system temperature is down to below 60 DEG C, open reactor, add appropriate triethylamine, with the by-product hydrochloric acid produced in neutralization reaction process, filter, underpressure distillation, namely obtains the interfacial spreading agent that the present invention regenerates for asphalt pavement warm mixing.
The interfacial spreading agent test obtained by above-described embodiment 1 is on the peeling effect of Bituminous concrete surface and the impact of warm mix reclaimed asphalt mixture water stability.
The Bituminous concrete surface rate of transform is tested
This test analyzes the influence factor of Asphalt absorption in RAP by the rate of transform of Bituminous concrete surface, RAP medium pitch and the peeling effect of gathering materials under evaluation warm mix condition.Test adopts the 9.5mm of equivalent and the RAP compound of following particle diameter and particle diameter to be that the interfacial spreading agent of newly gathering materials of 9.5mm ~ 13.2mm and different amounts (110 ~ 130 DEG C) under warm mix condition carries out mix.Adopt after certain hour mix 9.5mm gather materials sieve the compound after mix is sieved, be that the new aggregate particle of 9.5mm ~ 13.2mm calculates asphalt content by extraction test by isolated particle diameter, be the transfer amount of Bituminous concrete surface.
The test result of the rate of transform
Obviously, when not adding interfacial spreading agent, the Bituminous concrete surface rate of transform is very low, and after adding interfacial spreading agent, the Bituminous concrete surface rate of transform significantly improves, substantially close to 50% of Bituminous concrete surface total content.Also show, under warm mix condition, interfacial spreading agent makes Bituminous concrete surface and old gathering materials occur to peel off the effective bitumen serving as reusable edible effectively simultaneously.
Embodiment 2
100 parts of methyltrimethoxy silanes, 20 parts of APEG-2000 are joined the reactor being with magnetic agitation and prolong, and heating in water bath, slowly heats up under magnetic agitation, and opens condensing works; When temperature reaches about 50 DEG C, add 2 parts of catalyzer Platinic chlorides, continue to heat up.After temperature rises to 90 DEG C and is stable, the control reaction times is 5h: after reaction terminates, when question response system temperature is down to 50 DEG C, open reactor, add appropriate triethylamine, with the by-product hydrochloric acid produced in neutralization reaction process, filter, underpressure distillation, namely obtains the interfacial spreading agent that the present invention regenerates for asphalt pavement warm mixing.
Embodiment 3
100 parts of 3-(2,3-epoxy third oxygen) propyl trimethoxy silicane, 30 parts of APEG-2000 are joined the reactor being with magnetic agitation and prolong, and heating in water bath, slowly heats up under magnetic agitation, and opens condensing works; When temperature reaches about 50 DEG C, add 4 parts of catalyzer Platinic chlorides, continue to heat up.After temperature rises to 85 DEG C and is stable, the control reaction times is 4h: after reaction terminates, when question response system temperature is down to 60 DEG C, open reactor, add appropriate triethylamine, with the by-product hydrochloric acid produced in neutralization reaction process, filter, underpressure distillation, namely obtains the interfacial spreading agent that the present invention regenerates for asphalt pavement warm mixing.
Embodiment 4
100 parts of 3-aminopropyl triethoxysilanes, 40 parts of APEG-2000 are joined the reactor being with magnetic agitation and prolong, and heating in water bath, slowly heats up under magnetic agitation, and opens condensing works; When temperature reaches about 50 DEG C, add 5 parts of catalyzer Platinic chlorides, continue to heat up.After temperature rises to 85 DEG C and is stable, the control reaction times is 4h: after reaction terminates, when question response system temperature is down to 60 DEG C, open reactor, add appropriate triethylamine, with the by-product hydrochloric acid produced in neutralization reaction process, filter, underpressure distillation, namely obtains the interfacial spreading agent that the present invention regenerates for asphalt pavement warm mixing.
Embodiment 5 ~ 10 is prepared with reference to embodiment 1.
Interfacial spreading agent addition is 0.2% of old asphalt mixture, and the interfacial spreading agent that measurement embodiment 2 ~ 10 obtains is to the peeling effect of Bituminous concrete surface.
The interfacial spreading agent (110 ~ 130 DEG C) under warm mix condition that what test adopted the 9.5mm of equivalent and the RAP compound of following particle diameter and particle diameter to be 9.5mm ~ 13.2mm newly gather materials and different embodiment obtains carries out mix.Adopt after certain hour mix 9.5mm gather materials sieve the compound after mix is sieved, be that the new aggregate particle of 9.5mm ~ 13.2mm calculates asphalt content by extraction test by isolated particle diameter, be the transfer amount of Bituminous concrete surface.
The test result of the rate of transform
Obviously, when adding interfacial spreading agent 0.2% of the present invention, the Bituminous concrete surface rate of transform all can be basic close to 40% of Bituminous concrete surface total content.In fact, suitably add interfacial spreading agent, the Bituminous concrete surface rate of transform can suitably increase.Experiment shows, the interfacial spreading agent prepared by the present invention all can make Bituminous concrete surface and old gathering materials occur to peel off the effective bitumen serving as reusable edible effectively.
Embodiment 11
By waste and old for motor car engine recovery machine oil, through leaving standstill 5h layering, removing open fire; Adding appropriate anhydrous sodium sulfate drying, removing residual moisture further, filtering; Finally add a small amount of white lime alkali and regulate its acid-basicity, control its pH value 7, both.
Embodiment 12
The waste and old recovery machine oil of motor car engine, through leaving standstill 7h layering, removing open fire; Adding appropriate anhydrous sodium sulfate drying, removing residual moisture further, filtering; Finally add a small amount of white lime alkali and regulate its acid-basicity, control its pH value 9, both.
Embodiment 13
The waste and old recovery machine oil of motor car engine, through leaving standstill 8h layering, removing open fire; Adding appropriate anhydrous sodium sulfate drying, removing residual moisture further, filtering; Finally add a small amount of white lime alkali and regulate its acid-basicity, control its pH value 8, both.
Embodiment 14
A kind of warm mix regeneration composite modifier, wherein warm-mixing agent: interfacial spreading agent: base oil is divided into 1: 3: 5, concrete operations are:
Machine oil obtained for embodiment 11 is mixed with the ratio of dibutyl phthalate in 100:5, within 3 ~ 5 minutes, makes it even at about 115 DEG C according to 1000r/min stirring, obtained basic oil content; About raising basic oil content whipping temp to 130 DEG C, add interfacial spreading agent obtained in embodiment 1, stir 10 ~ 15 minutes; Stop stirring and reducing whipping temp to 110 DEG C, add octadecyl acrylate and styrene-maleic anhydride copolymer successively, wherein octadecyl acrylate and styrene-maleic anhydride copolymer are the ratio of 2: 1 by quality ratio; Open and stir, controlling stir speed (S.S.) is that 5000r/min shears 5 ~ 10 minutes, makes product warm mix reclaimed asphalt mixture interface of the present invention dispersion recombiner.
Warm mix reclaimed asphalt mixture interface dispersion recombiner is to the water stability testing of warm mix reclaimed asphalt mixture
In process of the test, regenerating mixture bitumen aggregate ratio 4.5% is as optimum oil-stone ratio, the volume of RAP is 40%, the volume of the interface dispersion recombiner obtained by embodiment 10 is respectively 0.2%, 0.4%, 0.6% and 0.8% (with RAP granular mass for benchmark), and reclaimed asphalt mixture aggregate grading gets specification intermediate value.According to specification shaping warm mix regenerating mixture marshal piece, and carry out asphalt indirect tensile test on frozen-thaw, before and after compound freeze thawing, cleavage strength test-results, freeze-thaw split strength ratio TSR calculation result are shown in Figure of description.
As can be seen from Figure of description, do not add the warm mix reclaimed asphalt mixture of interface dispersion recombiner, TSR value is only 59.55%; The warm mix reclaimed asphalt mixture freeze-thaw split strength ratio of adding interfacial spreading agent obviously increases, and TSR value rises obviously; When interfacial spreading agent consumption is 0.2%, there is peak value in compound freeze-thaw split intensity, before and after freeze thawing, intensity level reaches 2.05MPa and 1.84MPa respectively, and TSR value reaches 89.75%, meets tentative specification requirement.From data, interfacial spreading agent optimum amount per-cent is 0.2%.
Embodiment 15
A kind of warm mix regeneration composite modifier, wherein warm-mixing agent: interfacial spreading agent: base oil is divided into 1: 1: 2, concrete operations are:
By machine oil obtained for embodiment 11 and dibutyl phthalate by 100: 5 ratio mix, within 3 ~ 5 minutes, make it even at about 130 DEG C according to 2000r/min stirring, obtain basic oil content; About raising basic oil content whipping temp to 150 DEG C, add interfacial spreading agent obtained in embodiment 1, stir 10 ~ 15 minutes; Stop stirring and about reducing whipping temp to 115 DEG C, add octadecyl acrylate and styrene-maleic anhydride copolymer successively, wherein octadecyl acrylate and styrene-maleic anhydride copolymer are the ratio of 2: 1 by quality ratio; Open and stir, controlling stir speed (S.S.) is that 5000r/min shears 5 ~ 10 minutes, makes product warm mix reclaimed asphalt mixture interface of the present invention dispersion recombiner.
Embodiment 16
A kind of warm mix regeneration composite modifier, wherein warm-mixing agent: interfacial spreading agent: base oil is divided into 1: 6: 8, concrete operations are:
By machine oil obtained for embodiment 11 and dibutyl phthalate by 100: 5 ratio mix, within 3 ~ 5 minutes, make it even at about 120 DEG C according to 1500r/min stirring, obtain basic oil content; About raising basic oil content whipping temp to 140 DEG C, add interfacial spreading agent obtained in embodiment 1, stir 10 ~ 15 minutes; Stop stirring and about reducing whipping temp to 120 DEG C, add octadecyl acrylate and styrene-maleic anhydride copolymer successively, wherein octadecyl acrylate and styrene-maleic anhydride copolymer are the ratio of 2: 1 by quality ratio; Open and stir, controlling stir speed (S.S.) is that 5000r/min shears 5 ~ 10 minutes, makes product warm mix reclaimed asphalt mixture interface of the present invention dispersion recombiner.
Embodiment 17 ~ 25 is prepared with reference to embodiment 14
Using regenerating mixture bitumen aggregate ratio 4.5% as optimum oil-stone ratio, the volume of RAP is 40%, the volume of the interface dispersion recombiner obtained by embodiment 15 ~ 25 is in 0.2% (with RAP granular mass for benchmark), and reclaimed asphalt mixture aggregate grading gets specification intermediate value.According to specification shaping warm mix regenerating mixture marshal piece, and carry out asphalt indirect tensile test on frozen-thaw, before and after compound freeze thawing, cleavage strength test-results, freeze-thaw split strength ratio TSR calculation result see the following form.
The water stability test-results of warm mix regenerating mixture
Before the freeze thawing of warm mix reclaimed asphalt mixture, intensity is 1.75 ~ 2.20MPa, and after freeze thawing, intensity is that 1.69 ~ 1.90MPa, TSR value reaches 86.36 ~ 96.57, excellent property, meets pitch requirement completely.
Claims (7)
1. a warm mix regeneration composite modifier, by comprising warm-mixing agent, the raw material of basic oil content obtains, and it is characterized in that: raw material also comprises interfacial spreading agent; Wherein warm-mixing agent: interfacial spreading agent: the weight ratio of basic oil content is 1:1 ~ 6:2 ~ 8; Described warm-mixing agent is that octadecyl acrylate and vinylbenzene-copolymer-maleic anhydride mix with the ratio of 100:20 ~ 60; Described base oil is divided into machine oil and softening agent to mix according to the ratio of 100:3 ~ 7, and described ratio is weight ratio; The described interfacial spreading agent for asphalt pavement warm mixing regeneration is obtained by substituting group silane, polyethers and catalyst reaction; Described substituting group silane is amino, alkoxyl group or epoxy group(ing) substituted silane; Described catalyzer is Platinic chloride, and described polyethers is allyl polyether.
2. composite modifier as claimed in claim 1, is characterized in that: described machine oil is waste and old lightweight machine oil, for by waste and old for motor car engine recovery machine oil, dewaters through leaving standstill, desiccant dryness, adds alkali and regulates pH value to be 7 ~ 9 to obtain.
3. composite modifier as claimed in claim 1, is characterized in that: the weight ratio of warm-mixing agent, interfacial spreading agent and base oil is 1:2 ~ 5:3 ~ 6.
4. composite modifier as claimed in claim 1, is characterized in that: described allyl polyether is APEG-2000, APEG-2400 or HPEG-2400.
5. composite modifier as described in claim 1 or 3, is characterized in that: described amino substituted silane is one or more mixing in 3-aminopropyl triethoxysilane, 3-aminopropyltriethoxy diethoxy silane, N-(β-aminoethyl-γ-aminopropyl) Trimethoxy silane; Described alkoxy substituted silane is one or more mixing in methyltrimethoxy silane, Union carbide A-162, octyl group Trimethoxy silane; Described epoxy group(ing) substituted silane is 3-(2,3-epoxy third oxygen) propyl trimethoxy silicane, 3-(2,3-epoxy third oxygen) hydroxypropyl methyl diethoxy silane, one or more mixing in β-(3，4-epoxycyclohexyl)ethyl trimethoxysilane.
6. composite modifier as described in claim 1 or 3, is characterized in that: 100 parts, substituting group silane, polyethers 20 ~ 60 parts, and catalyzer 2 ~ 10 parts, with parts by weight.
7. composite modifier as claimed in claim 6, it is characterized in that: 100 parts, substituting group silane, polyethers 30 ~ 50 parts, catalyzer 4 ~ 7 parts, with parts by weight.
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| CN105802261A (en) * | 2016-04-05 | 2016-07-27 | 重庆市智翔铺道技术工程有限公司 | Polymer compound modified asphalt and preparation method thereof |
| CN109337390A (en) * | 2018-09-12 | 2019-02-15 | 平顶山市公路交通勘察设计院 | A kind of discarded plant oil base warm-mixed asphalt regenerative agent and preparation method thereof |
| CN110423475A (en) * | 2019-07-24 | 2019-11-08 | 中交三公局第一工程有限公司 | A kind of preparation method of warm mix low pollution regeneration asphalt |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101831187A (en) * | 2010-04-30 | 2010-09-15 | 北京化工大学 | Rubber modified asphalt warm-mixing agent, preparation method and application |
| CN102268189A (en) * | 2011-06-14 | 2011-12-07 | 杭州市城市建设科学研究院 | Warm-mixed asphalt additive and preparation method thereof |
| WO2013067062A1 (en) * | 2011-11-01 | 2013-05-10 | Henry Company Llc | Plasticizers for adhesive, coating and sealant compositions applied to asphalt |
| WO2013116369A1 (en) * | 2012-02-01 | 2013-08-08 | Momentive Performance Materials Inc. | Siloxane polyether copolymers |
-
2014
- 2014-05-16 CN CN201410208502.3A patent/CN104004368B/en not_active Expired - Fee Related
- 2014-05-16 CN CN201510884432.8A patent/CN105368083B/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101831187A (en) * | 2010-04-30 | 2010-09-15 | 北京化工大学 | Rubber modified asphalt warm-mixing agent, preparation method and application |
| CN102268189A (en) * | 2011-06-14 | 2011-12-07 | 杭州市城市建设科学研究院 | Warm-mixed asphalt additive and preparation method thereof |
| WO2013067062A1 (en) * | 2011-11-01 | 2013-05-10 | Henry Company Llc | Plasticizers for adhesive, coating and sealant compositions applied to asphalt |
| WO2013116369A1 (en) * | 2012-02-01 | 2013-08-08 | Momentive Performance Materials Inc. | Siloxane polyether copolymers |
Also Published As
| Publication number | Publication date |
|---|---|
| CN105368083A (en) | 2016-03-02 |
| CN105368083B (en) | 2017-10-10 |
| CN104004368A (en) | 2014-08-27 |
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