Background technology
Bituminous pavement with its driving steadily, not reflective, noise is low, dust is little, maintenance is convenient, to traffic impact excellent properties such as less, on urban and suburban roads especially high-grade highway, be used widely.But along with the prolongation of duration of service, multiple pathology can take place in bituminous pavement under various load effects, makes bituminous pavement slowly change crisp, follow the string, harden gradually, crack, hole groove occur, until wearing out, produce be full of cracks.
Existing maintenance of surface technology is mainly repairs renovation and pavement recycling maintenance, repairing renovation promptly lays again with new modifying asphalt, a large amount of waste materials of Chan Shenging are discarded as meeting with therefrom, can cause a large amount of environmental pollutions on the one hand, cause wasting of a large amount of bituminous materials on the other hand again; The pavement recycling maintenance then adopts regenerator to mix in the useless pitch, makes pitch soften, dissolve each other.Existing Imported Asphalt regenerator restricts its applying of market at home owing to its complicated component, cost an arm and a leg; And lightweight oil that the home-made regenerator mainly is some petroleum industries to be produced such as lubricating oil, diesel oil, machine oil etc. or their mixture, be used for the old material of modification, but because composition is single, regeneration effect is unsatisfactory, a certain amount of new pitch must be in old pitch, mixed, the service requirements of high grade pavement could be satisfied.
Summary of the invention
The object of the present invention is to provide a kind of old asphalt waste effective regeneration and can delay its aged regenerant for waste asphalt and preparation method thereof once more greatly of making.
The present invention is a regenerant for waste asphalt, comprises the lightweight oil content, resin, anti-aging agent and uvioresistant auxiliary agent is characterized in that the composition of each component is respectively by weight percentage: lightweight oil content 75-90%, resin 10-25%, anti-aging agent 0.1-1%, uvioresistant auxiliary agent 0.1-1%; Described lightweight oil is divided into furfural oil, lubricating oil, the mixture of any one or more of Semen Maydis oil; Described resin is resin or the petroleum resin that extract in the tar.
The lightweight oil content plays permeate agent and solubilizing agent in bitumen regenerant; The main effect of resin is absorption and stable lightweight oil content, and the component in lightweight oil content and the useless pitch of aged forms a kind of stable macromolecular solution system again.
Described anti-aging agent can be 6-oxyethyl group-2,2,4-trimethylammonium-1,2-dihyaroquinoline; 2,2,4-trimethylammonium 1,2-dihydro quinoline polymer; N-phenyl-α-aniline; The N-Phenyl beta naphthylamine; N-phenyl-N`-cyclohexyl Ursol D; 2, the mixture of one or more of 6-di-t-butyl-4 methylphenol etc., it mainly acts on is to prevent regeneration asphalt (mainly being the effect of oxygen) each component aging once more under extraneous Conditioning.
Described uvioresistant auxiliary agent can be 2,4-dihydroxy benaophenonel or 2-hydroxyl-4-methoxy benzophenone, and it mainly acts on is to absorb ultraviolet ray, delays the aging once more of regeneration asphalt.
The preparation method of regenerant for waste asphalt of the present invention is:
By weight percentage, under whipped state, the lightweight oil content is heated to 100-120 ℃, resin is dropped in the above-mentioned lightweight oil content, under 100-120 ℃ of state, stir 25-60min, after dropping into anti-aging agent and uvioresistant auxiliary agent when naturally cooling to 60-80 ℃, continuing to stir 25-60min, be cooled to and obtain the heavy-gravity liquid form mixt under the normal temperature and be regenerant for waste asphalt of the present invention.
The using method of product of the present invention is, the pitch that will give up is warming up to 120-150 ℃, the ratio of regenerant for waste asphalt of the present invention in the 3%-15% of useless pitch weight joined in the useless pitch, through being stirred well to the regenerant for waste asphalt thorough mixing in useless pitch, pitch after gained pitch is and is reproduced, its technical indicator of regeneration asphalt of handling through regenerant for waste asphalt of the present invention reaches the requirement that petroleum pitch technical requirements JTJ 032-94 heavily hands in the Ministry of Communications.
The present invention is directed to the useless bituminous material characteristic of aged in the bituminous pavement, by in the lightweight oil content, adding resin, anti-aging agent, uvioresistant auxiliary agent etc., and the each component material carried out choose reasonable and proportioning, have that starting material are easy to get, prepare that equipment requirements is low, preparation technology is simple, low cost of manufacture, easy to use, outstanding advantage and positively effect such as regeneration effect is obvious, and rapid-action, reactive force is lasting.Through practical application, regenerant for waste asphalt of the present invention can make the useless pitch of aged reach the protobitumen technical requirement after regeneration, and it paves, and working life is basic identical with new pitch, can also delay it greatly and wear out once more.
Embodiment
Embodiment 1:
Extract 200g five lines out furfural oil under the whipped state and be heated to 110 ℃, take by weighing 20gC
5Petroleum resin drop in the oil, after stirring 30 minutes under 110 ℃, be cooled to 80 ℃, add 0.2g2,6-di-t-butyl-4 methylphenol anti-aging agent, 0.3g 2,4-dihydroxy benaophenonel uvioresistant auxiliary agent are behind the stirring 30min, be cooled to 25 ℃, make this thickness brown regenerant for waste asphalt 220.5g.Get regenerant for waste asphalt 15g of the present invention, add among the aged town oil AH-90#500g that from the useless compound of bituminous pavement, reclaims, stir 30min down, make the pitch after being reproduced at 140 ℃.Test regeneration asphalt index is with the useless pitch index contrast of the preceding aged of regeneration is not as follows:
Pitch | 25 ℃ of penetration degrees | 15 ℃ of ductilities | Softening temperature |
Useless bitumen A H-90# | 53 | 46 | 63 |
Regeneration asphalt | 84 | 125 | 51 |
Embodiment 2:
Stir down 100g Semen Maydis oil is heated to 100 ℃, take by weighing the 20g coumarone-indene resin, drop in the above-mentioned Semen Maydis oil, stir 30min down at 100 ℃, be cooled to 65 ℃, add 0.3g6-oxyethyl group-2,2,4-trimethylammonium-1,2-dihydro quinoline, 0.3g 2-hydroxyl-4-methoxy benzophenone stirs 50Min, be cooled to 25 ℃, make thickness brown regenerant for waste asphalt 120.6g, get regenerant for waste asphalt 50g of the present invention, add among the aging shell AH-70# pitch 500g that from waste material, reclaims, stir 30min down at 135 ℃, make the pitch after being reproduced.Test regeneration asphalt index is with the useless pitch index contrast of the preceding aged of regeneration is not as follows:
Pitch | 25 ℃ of penetration degrees | 15 ℃ of ductilities | Softening temperature |
Useless bitumen A H-70# | 38 | 53 | 67 |
Regeneration asphalt | 77 | 152 | 47 |
Embodiment 3:
Replace furfural with naphthenic oil, C
9The petroleum resin replaced C
5Petroleum resin, all the other raw materials and proportioning, preparation technology with the blue refining of made regenerant for waste asphalt regeneration AH-90#, make the pitch after being reproduced with embodiment 1.Test regeneration asphalt index is with the useless pitch index contrast of the preceding aged of regeneration is not as follows:
Pitch | 25 ℃ of penetration degrees | 15 ℃ of ductilities | Softening temperature |
Useless bitumen A H-90# | 44 | 47 | 72 |
Regeneration asphalt | 82 | 106 | 53 |