CN103773010A - Hot mix asphalt additive and preparation method thereof - Google Patents
Hot mix asphalt additive and preparation method thereof Download PDFInfo
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- CN103773010A CN103773010A CN201210411159.3A CN201210411159A CN103773010A CN 103773010 A CN103773010 A CN 103773010A CN 201210411159 A CN201210411159 A CN 201210411159A CN 103773010 A CN103773010 A CN 103773010A
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
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- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
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Abstract
The invention discloses a hot mix asphalt additive and a preparation method thereof. The hot mix asphalt additive comprises the following components in parts by weight: 0.2-10 parts of coconut oil acid monoethanol amide sulfo succinate monoester disodium, 0.5-10 parts of fatty alcohol polyoxyethylene ether sulfosuccinate monoester disodium, 5-20 parts of inorganic fine powder, 0.1-3 parts of acid, and 57-94.2 parts of water. The preparation method comprises the following steps: adding the coconut oil acid monoethanol amide sulfo succinate monoester disodium, the fatty alcohol polyoxyethylene ether sulfosuccinate monoester disodium, the inorganic fine powder and the deionized water into a reaction vessel according to ratio, stirring, heating to 70-90 DEG C, adding an acid catalyst, adjusting the pH to 5.5-6.5, and reacting for 0.5-2 hours at the constant temperature of 75-90 DEG C to obtain the hot mix asphalt additive. The hot mix asphalt additive provided by the invention can effectively reduce the mixing temperature of an asphalt mixture, and has the advantages of stable performance, low production cost, environmental protection, simplicity in preparation method, wide application range, and the like.
Description
Technical field
The present invention relates to a kind of asphalt additive and preparation method thereof, relate in particular to a kind of warm-mixed asphalt additive and preparation method thereof.
Background technology
The asphalt using in road engineering at present is generally divided into two types according to mix construction temperature: cold-mix asphalt compound CMA (Cold Mix Asphalt) and hot-mix asphalt mixture HMA (Hot Mix Asphalt).Cold-mix asphalt compound generally adopts emulsified bitumen or eu-bitumen and gather materials mix, making under normal temperature state, without heating with binder gathering materials, can save like this mass energy.But cold-mix asphalt compound initial stage pavement performance is poor, be difficult to meet the requirement of the important engineering such as motorway, Heavy Traffic road.Hot-mix asphalt mixture be most widely used, a kind of compound that pavement performance is the best.But in hot-mix asphalt mixture production process, pitch and building stones need to be under 150 ~ 180 ℃ of hot conditionss mix.Building stones, asphalt heating, to high temperature like this, have been consumed to mass energy.In hot-mix asphalt mixture production process, produce in addition a large amount of CO
2, flue dust and obnoxious flavour (CO, SO
2, NO
xdeng), not only pollute environment, and affected the healthy of staff.Meanwhile, the mix under hot conditions has also caused the aging of pitch, has reduced the pavement performance of asphalt.
For protection of the environment, save energy; carried out the research of Warm-Mix Bitumen Mixture WMA (Warm Mix Asphalt) in countries such as the middle and later periods nineties 20th century Europe and the U.S.; its objective is the mix by reducing asphalt and the temperature that paves; reach the energy consumption reducing in Process of Pitch Mixture Production, reduce CO
2deng gas and dust discharge amount, guarantee that Warm-Mix Bitumen Mixture has and the essentially identical pavement performance of hot-mix asphalt mixture and construction workability simultaneously.
At present, warm mix asphalt technologies mainly contains three kinds of modes: the one, in pitch, add in advance a kind of certain additive that can reduce by 135 ℃ of viscosity of pitch, change the viscosity-temperature curve of pitch from chemical terms, thereby reduce the mix temperature of pitch and building stones, reduced the high-temperature stability of compound but this method also can reduce by 60 ℃ of viscosity of pitch conventionally; The 2nd, adopt the higher emulsified bitumen of solid content, at 80～120 ℃ of temperature, with building stones mix, which is low approximately 30～50 ℃ compared with the temperature of hot asphalt; The 3rd, in the time of mixing compound, water and pitch are added in mix tank simultaneously, because the existence of water makes asphalt foaming, reach viscosity reducing effect.If but the method amount of water is excessive, can produce a large amount of water vapour or cause bumping, if the water yield is very few, foaming effect is bad.
CN101602862A discloses a kind of warm-mixed asphalt additive and preparation method thereof, this additive is by deionized water being joined in the polyvinyl alcohol water solution being made in advance, then add successively rosin quaternary ammonium salt, aromatic hydrocarbon quaternary ammonium salt emulsifier, aliphatic hydrocarbon quaternary ammonium salt emulsifier, nonionic surface active agent, stirring and dissolving, again the polyacrylamide solution being made in advance and trolamine are added, mix to after being uniformly dissolved and be finished product.This additive can obviously reduce asphalt mixing temperature, and the every pavement performance index of asphalt also meets the requirements, but this additive component complexity has increased difficulty and the cost prepared, is unfavorable for practical application.CN102268189A discloses a kind of warm-mixed asphalt additive and preparation method thereof, and it is the additive that adopts a kind of organic silicon modified by polyether polymkeric substance composition in solvent system.Can effectively reduce by 40 ℃ of left and right of mix temperature, and warm-mixed asphalt property indices is not less than hot asphalt, but lack relevant testing method and instance data support, in addition be applied to the acid catalyst pungencys such as this vitriol oil adding in polyethers esterification process and toxicity larger, easily cause harm and environmental pollution.
Summary of the invention
For the deficiencies in the prior art, the invention provides a kind of warm-mixed asphalt additive and preparation method thereof.Warm-mixed asphalt additive of the present invention can effectively reduce the mix temperature of asphalt, and has stable performance, and production cost is low, environmental friendliness, the advantage such as preparation method is easy and have wide range of applications.
Warm-mixed asphalt additive of the present invention, comprises in weight part:
(1) Coconut Fatty Acid Monoethanolamide sulfosuccinic acid monoesters disodium: 0.2 ~ 10 part
(2) fatty alcohol-polyoxyethylene ether sulfosuccinic acid monoesters disodium: 0.5 ~ 10 part
(3) inorganic micro powder: 5 ~ 20 parts
(4) acid: 0.1 ~ 3 part
(5) water: 57 ~ 94.2 parts.
The structural formula of Coconut Fatty Acid Monoethanolamide sulfosuccinic acid monoesters disodium of the present invention (DMSS) is RCONHCH
2cH
2oCOCHCH (SO
3na) COONa, wherein R is C
12～C
15alkyl.
The structural formula of fatty alcohol-polyoxyethylene ether sulfosuccinic acid monoesters disodium of the present invention (MES) is RO (CH
2cH
2o)
3cOCH
2cH (SO
3na) COONa, wherein R is C
12～C
14alkyl.
Inorganic micro powder of the present invention is one or more in activated alumina, zeolite powder, vermiculite, ceramsite sand, calcium carbonate sand, sodium silicoaluminate, wilkinite, slaked lime and gac, is preferably quartz sand, and inorganic micro powder granularity is 20 ~ 200 orders.
Acid of the present invention is C
1～C
6organic monoacid, as one or more in the organic monoacids such as formic acid, acetic acid, propionic acid, oxalic acid, tartrate, can be also one or more in the inorganic weak acids such as silicic acid, carbonic acid, boric acid.
In warm-mixed asphalt additive of the present invention, also can need to add according to practical application other additive, as oxide compounds such as antistripping agent, antiaging agent, polymer modifiers and magnesium oxide, calcium oxide and Vanadium Pentoxide in FLAKESs.
The preparation method of warm-mixed asphalt additive of the present invention, comprises following content:
By proportioning, Coconut Fatty Acid Monoethanolamide sulfosuccinic acid monoesters disodium, fatty alcohol-polyoxyethylene ether sulfosuccinic acid monoesters disodium, inorganic micro powder and water are added to container, stir and heat up, add acid, adjust pH, constant temperature stirs, and obtains warm-mixed asphalt additive of the present invention.
Wherein, stir and be warming up to 70 ~ 90 ℃, adjusting pH value is 5.5 ~ 6.5, and constant temperature churning time is 0.5 ~ 2 hour.
The application of warm-mixed asphalt additive of the present invention in asphalt mixture mixing, comprises the steps: to reach design temperature when building stones, adds pitch, and warm-mixed asphalt additive is joined in asphalt to then mix, adds breeze, and mix evenly.
Warm-mixed asphalt additive of the present invention adds according to the 2wt% ~ 10wt% of asphalt content.
The compound property of warm-mixed asphalt additive DMSS of the present invention and MES is good, form micro-emulsion type emulsion with pitch, greatly reduce the high temperature viscosity of pitch, reduced asphalt mix, pave and compacting temperature, a large amount of discharges that reduce smog and objectionable impurities, reduce harm and environmental pollution; Warm-mixed asphalt additive DMSS of the present invention and MES readily biodegradable, little to the pungency of environment and human body, environmental friendliness, raw material is simple, and production cost is low, and good stability is applied widely, is easy to industrial application.
Embodiment
Below in conjunction with embodiment, the present invention is further illustrated, but therefore do not limit the present invention.
Embodiment 1
(R is C to Coconut Fatty Acid Monoethanolamide sulfosuccinic acid monoesters disodium
12alkyl): 0.5 part
(R is C to fatty alcohol-polyoxyethylene ether sulfosuccinic acid monoesters disodium
12alkyl): 9 parts
Granularity is 250 object quartz sands: 18 parts
Oxalic acid: 0.4 part
Water: 72.1 parts.
By proportioning, Coconut Fatty Acid Monoethanolamide sulfosuccinic acid monoesters disodium, fatty alcohol-polyoxyethylene ether sulfosuccinic acid monoesters disodium, quartz sand and deionized water are added to container, heat, be stirred to 80 ℃; Add oxalic acid, adjusting pH is 6.0, and 80 ℃ of stirrings of constant temperature 1 hour, obtain warm-mixed asphalt additive of the present invention.
Embodiment 2
(R is C to Coconut Fatty Acid Monoethanolamide sulfosuccinic acid monoesters disodium
14alkyl): 6 parts
(R is C to fatty alcohol-polyoxyethylene ether sulfosuccinic acid monoesters disodium
12alkyl): 1 part
Granularity is 200 object vermiculites: 7 parts
Formic acid: 0.5 part
Water: 85.5 parts.
By proportioning, Coconut Fatty Acid Monoethanolamide sulfosuccinic acid monoesters disodium, fatty alcohol-polyoxyethylene ether sulfosuccinic acid monoesters disodium, vermiculite and deionized water are added to container, heat, be stirred to 80 ℃; Add formic acid, adjusting pH is 6.2, and 80 ℃ of stirrings of constant temperature 1 hour, obtain warm-mixed asphalt additive of the present invention.
Embodiment 3
(R is C to Coconut Fatty Acid Monoethanolamide sulfosuccinic acid monoesters disodium
12alkyl): 8 parts
(R is C to fatty alcohol-polyoxyethylene ether sulfosuccinic acid monoesters disodium
14alkyl): 10 parts
Granularity is 150 object quartz sands: 10 parts
Boric acid: 2.5 parts
Water: 69.5 parts.
By proportioning, Coconut Fatty Acid Monoethanolamide sulfosuccinic acid monoesters disodium, fatty alcohol-polyoxyethylene ether sulfosuccinic acid monoesters disodium, quartz sand and deionized water are added to container, heat, be stirred to 85 ℃; Add acetic acid, adjusting pH is 5.8, and 80 ℃ of stirrings of constant temperature 1.5 hours, obtain warm-mixed asphalt additive of the present invention.
Embodiment 4
The warm mix mode that adopts respectively traditional heat to mix mode and application additive of the present invention according to the method for " standard specification for construction and acceptance of highway asphalt pavement " (JTG F40-2004) regulation is carried out the mix of asphalt, and carries out performance of asphalt mixture test.Wherein, the warm-mixed asphalt additive of preparation in embodiment 1,2,3, according to the 3wt% ~ 8wt% of asphalt content, is added in asphalt in the mode of spraying, be prepared into compound test specimen A, B, C.This test adopts 90#A level pitch, and bitumen aggregate ratio is 5.5%, and the grating of building stones is in table 1, and performance of asphalt mixture test result is in table 2.Concrete mix process is as follows:
Warm mix:
1, take building stones by set amount and in the baking oven of 120 ℃, heat 4 hours, pitch heats 2 hours in 120 ℃ of baking ovens, and mixing machine Temperature Setting is 120 ℃.
2, rubble material is first added under design temperature to mixing machine, uniform stirring 3 minutes.
3, pitch is added to mixing machine, and warm-mixing agent is sprayed in asphalt by set amount, mix 2 minutes, then add breeze, under design temperature, continue mix 4 minutes.
4, mold temperature is controlled at 110 ℃.
Heat is mixed:
1, take building stones by set amount and in the baking oven of 150 ℃, heat 4 hours, pitch heats 2 hours in 150 ℃ of baking ovens, and mixing machine Temperature Setting is 150 ℃.
2, rubble material is first added under design temperature to mixing machine, uniform stirring 3 minutes.
3, pitch is added to mixing machine, mix 2 minutes, then add breeze, under design temperature, continue mix 4 minutes.
4, mold temperature is controlled at 130 ℃.
Table 1 building stones grating.
| Particle diameter/mm | 16~13.2 | 13.2~9.5 | 9.5~4.75 | 4.75~2.36 | 2.36~1.18 | 1.18~0.6 |
| Ratio/wt% | 4.5 | 22 | 24 | 14.2 | 14.5 | 6.2 |
Table 1(is continuous) building stones grating.
| Particle diameter/mm | 1.18~0.6 | 0.6~0.3 | 0.3~0.15 | 0.15~0.075 | Be less than 0.075 |
| Ratio/wt% | 6.2 | 4.2 | 4.2 | 5.8 | 0.4 |
Table 2 performance of asphalt mixture test result.
| Project | Stability/kN | Flow valuve/mm | Voidage/% | VFA | Residual stability is than (%) | Retained strength is than (%) | Dynamic stability (inferior/mm) |
| A | 9..34 | 2.96 | 3.6 | 72 | 88.0 | 85.9 | 1520 |
| B | 8.75 | 3.48 | 4.2 | 66 | 83.2 | 79.0 | 1356 |
| C | 9.32 | 3.06 | 4.1 | 68 | 88.0 | 79.6 | 1457 |
| Heat is mixed | 9.52 | 2.89 | 3.5 | 71 | 89.1 | 83.6 | 1301 |
| Technological standard | ≥8 | 2~3.5 | 3~5 | 65~75 | ≥80 | ≥75 | ≥1000 |
Testing data shows, Warm-Mix Bitumen Mixture is at mix and mold temperature with respect to 20～30 ℃ of obvious reductions of hot-mix asphalt mixture in the situation that, and property indices all meets the requirement of " standard specification for construction and acceptance of highway asphalt pavement " (JTG F40-2004).
Claims (11)
1. a warm-mixed asphalt additive, is characterized in that: comprise in weight part:
Coconut Fatty Acid Monoethanolamide sulfosuccinic acid monoesters disodium: 0.2 ~ 10 part
Fatty alcohol-polyoxyethylene ether sulfosuccinic acid monoesters disodium: 0.5 ~ 10 part
Inorganic micro powder: 5 ~ 20 parts
Acid: 0.1 ~ 3 part
Water: 57 ~ 94.2 parts.
2. want the warm-mixed asphalt additive described in 1 according to right, it is characterized in that: the structural formula of described Coconut Fatty Acid Monoethanolamide sulfosuccinic acid monoesters disodium is RCONHCH
2cH
2oCOCHCH (SO
3na) COONa, wherein R is C
12～C
15alkyl.
3. want the warm-mixed asphalt additive described in 1 according to right, it is characterized in that: the structural formula of described fatty alcohol-polyoxyethylene ether sulfosuccinic acid monoesters disodium is RO (CH
2cH
2o)
3cOCH
2cH (SO
3na) COONa, wherein R is C
12～C
14alkyl.
4. want the warm-mixed asphalt additive described in 1 according to right, it is characterized in that: described inorganic micro powder is one or more in activated alumina, zeolite powder, quartz sand, vermiculite, ceramsite sand, wilkinite, calcium carbonate sand, sodium silicoaluminate, slaked lime and gac.
5. want the warm-mixed asphalt additive described in 1 according to right, it is characterized in that: the granularity of described inorganic micro powder is 20 ~ 200 orders.
6. want the warm-mixed asphalt additive described in 4 or 5 according to right, it is characterized in that: described inorganic micro powder is quartz sand.
7. want the warm-mixed asphalt additive described in 1 according to right, it is characterized in that: described acid is C
1～C
6organic monoacid or inorganic weak acid, organic monoacid is selected from one or more in formic acid, acetic acid, propionic acid, oxalic acid and tartrate, inorganic weak acid is selected from one or more in silicic acid, carbonic acid and boric acid.
8. the preparation method of a warm-mixed asphalt additive claimed in claim 1, it is characterized in that comprising following content: by proportioning, Coconut Fatty Acid Monoethanolamide sulfosuccinic acid monoesters disodium, fatty alcohol-polyoxyethylene ether sulfosuccinic acid monoesters disodium, inorganic micro powder and deionized water are added to container, stir and heat up, add acid, adjust pH, constant temperature stirs, and obtains warm-mixed asphalt additive.
9. in accordance with the method for claim 6, it is characterized in that: stir and be warming up to 70 ~ 90 ℃, adjusting pH value is 5.5 ~ 6.5, and constant temperature churning time is 0.5 ~ 2 hour.
10. a warm-mixed asphalt additive claimed in claim 1 application in asphalt mixture mixing, it is characterized in that comprising the steps: reaching design temperature when building stones, add pitch, and warm-mixed asphalt additive is joined in asphalt to then mix, add breeze, mix evenly.
11. according to application claimed in claim 10, it is characterized in that: warm-mixed asphalt additive adds according to the 2wt% ~ 10wt% of asphalt content.
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN104250446A (en) * | 2014-09-24 | 2014-12-31 | 北京中杰伟业科技发展有限公司 | Warm asphalt modifier and preparation method and application thereof |
| CN108033461A (en) * | 2017-12-18 | 2018-05-15 | 深圳海川新材料科技股份有限公司 | A kind of mineral foaming warm-mixing agent and preparation method thereof |
| CN111171587A (en) * | 2020-01-03 | 2020-05-19 | 武汉市市政路桥有限公司 | Self-compaction asphalt cement and preparation method thereof |
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| CN111171587A (en) * | 2020-01-03 | 2020-05-19 | 武汉市市政路桥有限公司 | Self-compaction asphalt cement and preparation method thereof |
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| CN103773010B (en) | 2015-09-30 |
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