CN101235209A - Asphalt pavement conditioning curing agent and preparation method thereof - Google Patents
Asphalt pavement conditioning curing agent and preparation method thereof Download PDFInfo
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- CN101235209A CN101235209A CNA200810069205XA CN200810069205A CN101235209A CN 101235209 A CN101235209 A CN 101235209A CN A200810069205X A CNA200810069205X A CN A200810069205XA CN 200810069205 A CN200810069205 A CN 200810069205A CN 101235209 A CN101235209 A CN 101235209A
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Abstract
The invention discloses asphalt pavement conditioning curing agent and a preparation process. The formulation comprises the following components with percentage by weight, 10-15% refined asphalt, 23-50% organic solution, 3-23% surface modifier, 2-10% functional auxiliary agent and 5-25% regenerative agent. The preparation process comprises conducting reasonable proportioning for refined asphalt, organic solution and regenerative agent, surface modifier and functional auxiliary agent, putting into a stirred tank in turn, starting a stirrer to stir continuously, stirring for 0.5-4h in condensation reflux under the temperature of 60-150 DEG C, and then cooling down to ambient temperature, finally obtaining the product of asphalt pavement conditioning curing agent when the mixture is completely cooled down. The curing agent has simple making art, low device requirement, low usage cost and simple construction technology, which can significant increase penetration degree, softening point and ductility of aging asphalt, beautifies the appearance of asphalt pavement, improves the quality of pavement, increases the cling ability of the pavement, and prolongs the service life of the pavement.
Description
Technical field
The present invention relates to a kind of can the reduction to the aged asphalt pavement recycling, make its performance recovery to original new bituminous pavement partial properties index, and can make minute crack automatically up, effectively water shutoff, the preparation method of the asphalt pavement conditioning curing agent of road improvement frictional coefficient and graceful road surface outward appearance belongs to bituminous pavement maintenance and repair association area.
Background technology
In recent years, the semi-rigidity bituminous concrete road has become the major structural types of highway in China.Bituminous pavement is with surfacing, and it is comfortable to drive a vehicle, and noise is little, and good vibration damping is arranged, and advantages such as old asphalt mixture reproducible utilization are occupied dominant position.In use, the road surface in various natural causes (as oxygen, temperature, ultraviolet ray, water etc.) and human factor (as construction, heavy duty etc.) under the effect, its every performance can progressively reduce, and shows as bituminous pavement and rut, hole, hole, loose, various forms of crackings etc. occur.If do not take effective maintenance measure, in time eliminate disease, can cause the havoc on road surface.
Present maintenance method mainly is the maintenance of passive type, promptly waits the destruction on road surface to reach when having a strong impact on driving, carries out cover or spreads new road surface.Though can obtain the use properties on newly-built road surface, also have some defectives: it is bigger to the influence of traffic to overhaul the road surface, particularly to some busy major urban arterial highways and the bigger motorway of the volume of traffic; In addition, the pavement recapping cost is higher, and the depleted asphalt pollutes environment.This mode not only increases Road maintenance overhead charges and directly economic the input, has also increased virtually because road maintenance or overhaul generation social cost such as causing traffic congestion, environmental pollution in the process of reconstruction.Therefore, in order both to reduce construction cost, can prolong the weather resistance of bituminous pavement again, easy construction simultaneously, influence to traffic is little, can occur not or occur that early disease such as ageing of asphalt, road surface are sent out puckery, adopt the special regeneration maintenance material of bituminous pavement to carry out preventive maintenance when loose, pitted skin, minute crack, infiltration etc. bituminous pavement.
Abroad, adopt the special regeneration maintenance material of bituminous pavement to carry out the existing more research and the application of technology of preventive maintenance.At present, this technology has obtained using widely in the U.S., Canada and some European countries, and has obtained tremendous economic and social benefit.External experience shows, adopts the special regeneration maintenance material of bituminous pavement that road is carried out precuring and handles, and less investment, profitable, the flower stiver is controlled serious disease.
The Pavement Dressing Conditioner of U.S.'s development (being called for short PDC, U.S. Patent number 5,580,603) is a kind of preventative asphalt pavement regeneration agent, uses at some airfield runways of ground such as the U.S. and Canada and highway.It can be regenerated to aged asphalt, can strengthen asphalt temperature stability.Simultaneously, road pavement is carried out water-tight, hinders the seepage failure effect of water, thereby prevents or delay the early damage of bituminous pavement.But this technology is not too obvious to the effect of diseases such as handling crack, the ageing of asphalt occurred 3～5mm and come off, serious loose.
Summary of the invention
The present invention is according to trend and the precuring material existing deficiency of domestic asphalt roads maintenance towards cold conditions construction development, and in conjunction with the advantage of advanced foreign technology, purpose is to provide a kind of asphalt pavement conditioning curing agent and preparation method, set about from construction technology with to action principle two aspects of bituminous pavement, by consuming less resource, at utmost improve the bituminous pavement quality, beautify the road surface outward appearance, improve road anti-slide performance and water resistance, prevention or check disease development and spread effectively prolongs road life.This material can effectively solve bituminous pavement early diseases such as ageing of asphalt, loose, pitted skin, fine cracks, infiltration.
Purpose of the present invention is achieved through the following technical solutions:
A kind of asphalt pavement conditioning curing agent, by weight percentage, its prescription comprises following component: refined asphaltic bitumen 10～50%, organic solvent 23～50%, surface-modifying agent 3～23%, functional agent 2～10% and regenerator 5～25%.
Described refined asphaltic bitumen is petroleum pitch, coal-tar pitch, SBS thermoplastic styrene butadiene rubber modifying asphalt or rubber powder modified asphalt.
Described organic solvent is any one or more a mixture in benzene,toluene,xylene, ethyl acetate, butylacetate, acetone, ethanol, butanols, the Tianna solution equal solvent.
Described surface-modifying agent is any one or more a mixture in petroleum resin, urethane, thermoplastic acrylic resin, silicone resin, dibutyl phthalate, dioctyl phthalate (DOP), the vegetables oil.
Described functional agent is any one or more a mixture of calcined kaolin, black ore sand, montmorillonite, clay, lime carbonate, rubber powder and carbon black.
Described regenerator is any one or more mixture of light mineral oil, machine oil, phenol, polyphenol, naphthalene, anthracene, polycyclic aromatic hydrocarbons, kerosene and lubricating oil.
The preparation method of described asphalt pavement conditioning curing agent may further comprise the steps:
(1) refined asphaltic bitumen, organic solvent, regenerator, surface-modifying agent and functional agent are carried out rational proportion by above-mentioned weight percent, add successively in the stirring tank, start stirrer, continuously stirring under certain stirring velocity;
(2) with the mixture in the step (1) under 60～150 ℃, condensing reflux stirs 0.5～4h;
(3) mixture that makes in the step (2) is cooled to normal temperature, the even thickness liquid form mixt that obtains is asphalt pavement conditioning curing agent of the present invention.
With respect to prior art, the advantage of present technique invention:
(1) asphalt pavement conditioning curing agent of the present invention is a kind of cold conditions construction black strong solution, need not heat during construction, need not dilute, and can directly brush at normal temperatures at motorway or town road bituminous pavement by craft or machinery.
(2) after bituminous pavement is used, asphalt pavement conditioning curing agent can infiltrate the bituminous pavement of motorway or town road rapidly, and top layer aged asphalt-regenerating is brought back to life.Aged asphalt penetration degree, softening temperature and ductility after the recovery can reach or approaching original new pitch index.Aged asphalt after recovering to regenerate can bond again to discrete aggregate, and table forms tight sealing ply on the road, can effectively prevent the road surface infiltration.
(3) after bituminous pavement is used, the asphaltic binder that asphalt pavement conditioning curing agent can the supply road surface comes off because of ageing of asphalt is with the exposed parcel bonding again of gathering materials.
(4) after bituminous pavement is used, asphalt pavement conditioning curing agent can make the following minute crack of 3mm automatically up, and the crack of 3～5mm is sealed with good repairing effect.
(5) the present invention has selected distinctive surface-modifying agent for use, is the oligopolymer that a class appearance has a plurality of hardwares, is evenly dispersed in the asphalt system, can give stable extension of pitch and high low-temperature flexibility; Simultaneously, this class material is by the reaction of bridge formation technology, and the pitch after strengthening regenerating makes asphaltic binder tightr with the bonding of gathering materials to the cohesive force of discrete aggregate.
(6) functional agent that is added with especially of the present invention is that a class has porous, attrition resistant material, can effectively combine with other compositions in the material of the present invention, forms stable system; After being administered to bituminous pavement, such functional agent can be shown gathering materials of loss and part binding material in the supply road, effectively improves road surface microcosmic anti-slide performance, improves the frictional coefficient and the construction depth of bituminous pavement, and brings into play its effect for a long time.Simultaneously, the use of this class functional agent has reduced the usage quantity of asphaltic binder, has increased the intensity of asphaltic binder.
(7) asphalt pavement conditioning curing agent of the present invention is strong to the perviousness of the bituminous pavement of motorway or town road, and after construction one month, its depth of penetration can reach about 6～16mm, effectively stops the erosion of rainwater or other fuel oil.
(8) the present invention is used for not occurring or has occurred early disease such as ageing of asphalt, loose, pitted skin, fine cracks, infiltration etc., and the bituminous pavement that pavement structure is good is particularly suitable for open gradation (voidage is relatively large after the mineral aggregate moulding), the wearing layer bituminous road surface of drain type asphalt, open gradation porous crack (OGFC), pitch horse's hoofs fat crushed stones compound (SMA) road surface and other bituminous pavement are carried out preventive maintenance.
(9) asphalt pavement conditioning curing agent preparation technology of the present invention is simple, equipment requirements is low, use cost is low, construction technology is simple, resource environment protection, and result of use is obvious, can obviously improve penetration degree, softening temperature and the ductility of aged asphalt, graceful bituminous pavement outward appearance is improved pavement quality, prolongs road work-ing life.
Embodiment
For a better understanding of the present invention, below by example 1-4 the asphalt pavement conditioning curing agent and the preparation method of invention are elaborated.The benzene that uses among the example 1-4, toluene, dimethylbenzene, ethyl acetate, butylacetate, acetone, ethanol, butanols, Tianna solution, petroleum resin, urethane, thermoplastic acrylic resin, silicone resin, dibutyl phthalate, dioctyl phthalate (DOP), vegetables oil, phenol, polyphenol, naphthalene, anthracene, polycyclic aromatic hydrocarbons, light mineral oil, machine oil, kerosene, lubricating oil, kaolin, black ore sand, montmorillonite, clay, lime carbonate, starting material such as rubber powder and carbon black are technical grade.
Ageing of asphalt regeneration test method: aged asphalt specimen preparation (T0610-1993), pitch penetration degree (T0604-2000), ductility (T0605-1993) and softening temperature (T0606-2000).
Pavement test: content measurement comprises: frictional coefficient (portable pendulum tester mensuration), construction depth (T0731-2000), infiltration coefficient (T0730-2000).
Embodiment 1
Get coal-tar pitch 200g, toluene 60g, dimethylbenzene 32g, butanols 5g, polycyclic aromatic hydrocarbons 10g, phenol 10g, anthracene 20g, (Foshan City is brilliant to produce with Dehua worker company limited thermoplastic acrylic resin, trade mark AC1024) 34g, dioctyl phthalate (DOP) 10g, calcined kaolin (specification 325 orders) 12g, rubber powder (specification 120 orders) 10g, lime carbonate (specification 325 orders) 5g, carbon black (specification 325 orders) 5g adds in the stirring tank continuously stirring successively, then under 150 ℃ of temperature, condensing reflux stirs 4h, is cooled to normal temperature, obtains even thickness liquid form mixt and is asphalt pavement conditioning curing agent of the present invention.
Ageing of asphalt regeneration test: get this curing agent of 26.4g and mix with the Korea S 70# of SK company matrix pitch 600g after clock aging in 85 fens.To the aging front and back of the Korea S 70# of SK company matrix pitch, and the index contrast behind the aging back interpolation asphalt pavement conditioning curing agent sees Table 1-1:
Table 1-1
Test in place: on certain motorway (SMA flexible cladding) road surface, brushing this product by hand.Occurred on the preceding road surface of processing that ageing of asphalt comes off, minute crack, slight disease such as loose, infiltration.After this highway section used this product, frictional coefficient, construction depth, infiltration coefficient and the depth of penetration on road surface before and after using detected, test result sees Table 1-2.
Table 1-2
| Frictional coefficient BPN | Construction depth mm | Infiltration coefficient ml/min | Depth of penetration mm | ||||
| Before the test | After the test | Before the test | After the test | Before the test | After the test | Before the test | After the test |
| 50 | 53 | 0.82 | 0.82 | 25 | 0 | 0 | 6.12 |
After the processing, the fine cracks sealing, discrete aggregate bonds again, and the road surface presents even pitch-dark look, and the water shutoff performance effectively improves, and pavement quality improves.
Embodiment 2
Get petroleum pitch (trade mark AH-70) 140g, benzene 10g, toluene 80g, dimethylbenzene 20g, butylacetate 1 5g, acetone 5g, Resorcino 10, kerosene 40g, naphthalene 10, anthracene 20g, lubricating oil 20g, C 5 petroleum resin 8g, C 9 petroleum resin 12g, vegetables oil 7g, dibutyl phthalate 3g, clay (specification 325 orders) 10g, montmorillonite (specification 325 orders) 8g, calcined kaolin (specification 325 orders) 5g, carbon black (specification 325 orders) 2g, add in the stirring tank successively, continuously stirring, under 60 ℃, condensing reflux stirs 0.5h then, be cooled to normal temperature, obtain even thickness liquid form mixt and be asphalt pavement conditioning curing agent of the present invention.
Ageing of asphalt regeneration test: get this curing agent of 26.4g and mix with the Korea S 70# of SK company matrix pitch 600g after clock aging in 85 fens.To the aging front and back of the Korea S 70# of SK company matrix pitch, and the index contrast behind the aging back interpolation asphalt pavement conditioning curing agent sees Table 2:
Table 2
Bituminous pavement test: with bituminous pavement of the present invention transfer bury curing agent and be applied to certain town road aged bituminous pavement after, the surface friction coefficient absolute value was improving 5BPN on original basis, construction depth is constant substantially, infiltration coefficient reduces to zero by 28ml/min.
Embodiment 3
Get petroleum pitch (trade mark AH-90) 100g, Tianna solution 120g, Resorcino 10, naphthalene 10, anthracene 20g, light mineral oil 20g, lubricating oil 20g, kerosene 30g, C 9 petroleum resin 12g, silicone resin (being polysiloxane) 5g, dibutyl phthalate 4g, clay (specification 325 orders) 10g, montmorillonite (specification 325 orders) 8g, calcined kaolin (specification 325 orders) 5g, carbon black (specification 325 orders) 2g, add in the stirring tank successively, continuously stirring, under 120 ℃, condensing reflux stirs 3h then, be cooled to normal temperature, obtain even thickness liquid form mixt and be asphalt pavement conditioning curing agent of the present invention.
Ageing of asphalt regeneration test: get this curing agent of 26.4g and mix with the Korea S 70# of SK company matrix pitch 600g after clock aging in 85 fens.To the aging front and back of the Korea S 70# of SK company matrix pitch, and the index contrast behind the aging back interpolation asphalt pavement conditioning curing agent sees Table 3:
Table 3
Bituminous pavement is tested: after asphalt pavement conditioning curing agent of the present invention is applied to certain town road aged bituminous pavement, the surface friction coefficient absolute value has improved 5 BPN on original basis, construction depth is constant substantially, and infiltration coefficient reduces to zero by 28ml/min.
Embodiment 4
Get SBS modifying asphalt 70g, toluene 100g, dimethylbenzene 30g, ethanol 5g, acetone 15g, butylacetate 20g is to biphenol 10, lubricating oil 20g, light mineral oil 5g, machine oil 5g, C 5 petroleum resin 25g, C 9 petroleum resin 50g, lime carbonate (specification 325 orders) 25g, black ore sand (specification 325 orders) 10g,, carbon black (specification 325 orders) 6g, add in the stirring tank successively, continuously stirring, under 150 ℃ of temperature, condensing reflux stirs 4.0h then, be cooled to normal temperature, obtain even thickness liquid form mixt and be asphalt pavement conditioning curing agent of the present invention.
Ageing of asphalt regeneration test: get this curing agent of 26.4g and mix with the Korea S 70# of SK company matrix pitch 600g after clock aging in 85 fens.To the aging front and back of the Korea S 70# of SK company matrix pitch, and the index contrast behind the aging back interpolation asphalt pavement conditioning curing agent sees Table 4:
Table 4
Bituminous pavement is tested: after asphalt pavement conditioning curing agent of the present invention was applied to the aged bituminous pavement, the surface friction coefficient absolute value was improving 4BPN on original basis, and construction depth is constant substantially, and infiltration coefficient reduces to zero by 22ml/min.
Claims (7)
1. an asphalt pavement conditioning curing agent is characterized in that by weight percentage, and it is made up of following component: refined asphaltic bitumen 10～50%, organic solvent 23～50%, surface-modifying agent 3～23%, functional agent 2～10% and regenerator 5～25%.
2. asphalt pavement conditioning curing agent according to claim 1 is characterized in that: described refined asphaltic bitumen is petroleum pitch, coal-tar pitch, SBS thermoplastic styrene butadiene rubber modifying asphalt or rubber powder modified asphalt.
3. asphalt pavement conditioning curing agent according to claim 1 is characterized in that: described organic solvent is any one or more the mixture in benzene,toluene,xylene, ethyl acetate, butylacetate, acetone, ethanol, butanols, the Tianna solution.
4. asphalt pavement conditioning curing agent according to claim 1 is characterized in that: described surface-modifying agent is any one or more the mixture in petroleum resin, urethane, thermoplastic acrylic resin, silicone resin, dibutyl phthalate, dioctyl phthalate (DOP), the vegetables oil.
5. asphalt pavement conditioning curing agent according to claim 1 is characterized in that: described functional agent is any one or more a mixture of calcined kaolin, black ore sand, montmorillonite, clay, lime carbonate, rubber powder and carbon black.
6. asphalt pavement conditioning curing agent according to claim 1 is characterized in that: described regenerator is any one or more the mixture in light mineral oil, machine oil, phenol, polyphenol, naphthalene, anthracene, polycyclic aromatic hydrocarbons, kerosene and the lubricating oil.
7. prepare the preparation method of the described asphalt pavement conditioning curing agent of claim 1, may further comprise the steps:
(1) refined asphaltic bitumen, organic solvent, regenerator, surface-modifying agent and functional agent are carried out proportioning by weight percentage, add successively in the stirring tank, start stirrer, continuously stirring;
(2) will stir later mixture in the step (1) under 60～150 ℃, condensing reflux stirs 0.5～4h;
(3) mixture that makes in the step (2) is cooled to normal temperature, the even thickness liquid form mixt that obtains is asphalt pavement conditioning curing agent of the present invention.
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