CN104559246B - A kind of amphoteric ion type asphalt warm-mix agent and preparation method thereof - Google Patents
A kind of amphoteric ion type asphalt warm-mix agent and preparation method thereof Download PDFInfo
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- CN104559246B CN104559246B CN201310496432.1A CN201310496432A CN104559246B CN 104559246 B CN104559246 B CN 104559246B CN 201310496432 A CN201310496432 A CN 201310496432A CN 104559246 B CN104559246 B CN 104559246B
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Abstract
The invention discloses a kind of amphoteric ion type asphalt warm-mix agent and preparation method thereof, amphoteric ion type asphalt warm-mix agent includes by weight percentage: alkylamide propyl-betaine 0.1wt%～20wt%, alkylamide propyl hydroxy sulfo lycine 0.1wt%～20wt%, dodecanamide propyl amine oxide 0.1wt%～20wt%, vinyl pyridine co-polymer 0.1wt%～10wt%, acid catalyst 0.1wt%～3wt%, water 27wt%～99.5wt%.The advantages such as the amphoteric ion type asphalt warm-mix agent of the present invention can effectively reduce the high temperature viscosity of Colophonium, and has good dispersion, stable performance, and raw material easily gathers, and production cost is low, and preparation method is easy and has wide range of applications.
Description
Technical field
The present invention relates to a kind of asphalt warm-mix agent and preparation method thereof, particularly relate to a kind of amphoteric ion type asphalt warm-mix agent and preparation method thereof.
Background technology
The asphalt used in road engineering at present is generally divided into two types: cold-mix asphalt compound CMA (Cold Mix Asphalt) and hot-mix asphalt mixture HMA (Hot Mix Asphalt) according to mixing and stirring construction temperature.Cold-mix asphalt compound typically use emulsified asphalt or liquid asphalt with gather materials mix and stir under room temperature state, making, it is not necessary to gathering materials and binder heats, so can save mass energy.But cold-mix asphalt compound initial stage pavement performance is poor, it is difficult to meet the requirement of the important engineering such as highway, 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, Colophonium and building stones need to mix and stir under 150～180 DEG C of hot conditionss.Building stones, Colophonium are heated to the highest temperature, consume mass energy.In hot-mix asphalt mixture production process, additionally create substantial amounts of CO2, flue dust and harmful gas (CO, SO2、NOxDeng), not only pollute environment, and have impact on the healthy of staff.Meanwhile, mixing and stirring under hot conditions also result in the aging of Colophonium, reduces the pavement performance of asphalt.
For protection environment, save the energy; the research of Warm-Mix Bitumen Mixture WMA (Warm Mix Asphalt) has been carried out in countries such as the middle and late stage nineties in 20th century Europe and the U.S.; its objective is by reducing mixing and stirring and paving material of asphalt; reduce the energy consumption in Process of Pitch Mixture Production, reduce CO2Deng gas and dust discharge amount, ensure that Warm-Mix Bitumen Mixture has the pavement performance essentially identical with hot-mix asphalt mixture and construction workability simultaneously.
At present, warm mix asphalt technologies mainly has three kinds of modes: one is to add a kind of additive that can reduce by 135 DEG C of viscosity of Colophonium in advance in Colophonium, chemically angle changes the viscosity-temperature curve of Colophonium, thus reduce the temperature of mixing and stirring of Colophonium and building stones, but the method generally also can reduce by 60 DEG C of viscosity of Colophonium and i.e. reduce the high-temperature stability of compound；Two is the emulsified asphalt using solid content higher, mixes and stirs with building stones at a temperature of 80～120 DEG C, and which is low compared with the temperature of hot asphalt about 30～50 DEG C；Three is when mixing compound, water and Colophonium to be simultaneously introduced to mix and stir in tank, owing to the existence of water makes asphalt foaming, reaches viscosity reducing effect.If but the method amount of water is excessive, then can produce substantial amounts of steam or cause bumping, if the water yield is very few, then foaming effect is bad.
CN101602862A discloses a kind of warm-mixed asphalt additive and preparation method thereof, this additive is by being joined by deionized water in the polyvinyl alcohol water solution being made in advance, then Colophonium quaternary ammonium salt, aromatic hydrocarbon quaternary ammonium salt emulsifier, aliphatic hydrocarbon quaternary ammonium salt emulsifier, amphoteric ionic surfactant it are sequentially added into, stirring and dissolving, again the polyacrylamide solution being made in advance and triethanolamine are added, after mixing to be uniformly dissolved, be finished product.This additive can substantially reduce Colophonium and mix and stir temperature, and asphalt every pavement performance index also complies with requirement, but this additive component is complicated, adds difficulty and the cost of preparation, is unfavorable for actual application.CN102268189A discloses a kind of warm-mixed asphalt additive and preparation method thereof, and it is the additive using a kind of organic silicon modified by polyether polymer to form in dicyandiamide solution.Can effectively reduce and mix and stir temperature about 40 DEG C, and warm-mixed asphalt property indices is not less than hot asphalt, but lack relevant method of testing and instance data support.The zests such as the acid base catalysator that this additive uses in addition and toxicity are relatively big, easily cause harm and environmental pollution.
Summary of the invention
The invention provides a kind of amphoteric ion type asphalt warm-mix agent and preparation method thereof.The advantages such as the asphalt warm-mix agent of the present invention can effectively reduce the high temperature viscosity of Colophonium, and has stable performance, and raw material easily gathers, and production cost is low, and preparation method is easy and has wide range of applications.
Amphoteric ion type asphalt warm-mix agent of the present invention, includes by weight percentage:
(1) alkylamide propyl-betaine: 0.1wt%～20wt%
(2) alkylamide propyl hydroxy sulfo lycine: 0.1wt%～20wt%
(3) dodecanamide propyl amine oxide: 0.1wt%～20wt%
(4) acrylic acid-ethylene pyridine co-polymer: 0.1wt%～10wt%
(5) acid catalyst: 0.1
Wt%～3 wt%
(6) water: 27wt
%～99.5wt%.
Amphoteric ion type asphalt warm-mix agent of the present invention, preferably constitutes by weight percentage and includes:
(1) alkylamide propyl-betaine: 0.5wt%～10wt%
(2) alkylamide propyl hydroxy sulfo lycine: 0.5wt%～10wt%
(3) dodecanamide propyl amine oxide: 0.5wt%～10wt%
(4) acrylic acid-ethylene pyridine co-polymer: 0.5wt%～5wt%
(5) acid catalyst: 0.2
Wt%～2 wt%
(6) water: 63wt
%～97.8wt%.
In the inventive method, the structural formula of described alkylamide propyl-betaine is RCONH (CH2)3N+(CH3)2CH2COO-, wherein R is C11～C15Alkyl.
In the inventive method, the structural formula of described alkylamide propyl hydroxy sulfo lycine is RCONH (CH2)3N+(CH3)2CH2CH(OH)CH2SO3 -, wherein R is C11～C15Alkyl.
In the inventive method, the structural formula of described dodecanamide propyl amine oxide is CH3(CH2)10CONH(CH2)3N(CH3)2O。
In the inventive method, the structural formula of described acrylic acid-ethylene pyridine co-polymer is (CH2CHC5H4N)x-(CH2CHCOOH)y, wherein x, y are respectively less than 100,000.
In the inventive method, described acid catalyst is C1～C6Organic monoacid or inorganic weak acid, one or more in formic acid, acetic acid, propanoic acid, oxalic acid and tartaric acid of organic monoacid, one or more in silicic acid, carbonic acid and boric acid of inorganic weak acid.
In the inventive method, amphoteric ion type asphalt warm-mix agent can need to add other additive, such as antistripping agent, age resister and polymer modifiers etc. according to reality application.
The preparation method of amphoteric ion type asphalt warm-mix agent of the present invention is: by proportioning, alkylamide propyl-betaine, alkylamide propyl hydroxy sulfo lycine, dodecanamide propyl amine oxide, acrylic acid-ethylene pyridine co-polymer and water are added container, stirring is warming up to 60～80 DEG C, add acid catalyst, adjusting pH is 5～7, constant temperature stirs 0.5～2 hour, obtains amphoteric ion type asphalt warm-mix agent of the present invention.
The amphoteric ion type asphalt warm-mix agent of the present invention application in asphalt mixture mixing, comprises the steps: when building stones reach to mix and stir temperature, and mix is uniform, adds Colophonium, and is joined by warm-mixing agent in asphalt, uniform mixing, adds breeze, uniform mixing.Mixing time is generally 1 ~ 10 minute every time.Wherein warm-mixing agent adds according to 2wt%～10wt% of asphalt content.
Amphoteric ion type asphalt warm-mix agent of the present invention compares with traditional asphalt warm-mixing agent, has the advantage that
(1) in the amphoteric ion type asphalt warm-mix agent of the present invention, containing the amphoteric ionic surfactant of backbone, there is certain hydrophobic hydrophilic sequence length, and containing hydrophilic substituent group, the gathering of hydrophobic segment can associate in obstruction system, system stability is good.
(2) amphoteric ion type asphalt warm-mix agent of the present invention, micro-emulsion type emulsion can be formed with Colophonium, reduce the high temperature viscosity of Colophonium, therefore can reduce the mixing and stirring of asphalt, pave and compacting temperature, it mixes and stirs temperature can reduce by 15～30 DEG C by ratio hot asphalt, reduces energy consumption about 30%, a large amount of minimizing smog and the discharge of harmful substance, reduce harm and environmental pollution, decrease the ageing of asphalt during mixing and stirring, prolonging service life of pavement simultaneously.
(3) the amphoteric ion type asphalt warm-mix agent of the present invention, the compatibility is good, and for faintly acid system, character is gentle, it is possible to effectively reduce the zest of product, environmental friendliness.
(4) the amphoteric ion type asphalt warm-mix agent of the present invention, raw material is simple, and production cost is low, and preparation method is easy, and only the simple mechanical agitation of need can be dispersed, and good stability is applied widely, it is easy to commercial Application.
Detailed description of the invention
Below in conjunction with embodiment, the present invention is further illustrated, but is not so limited the present invention.The molecular formula of four kinds of wherein specifically used in embodiment materials is as follows: cocamido propyl betaine, RCONH (CH2)3N+(CH3)2CH2COO-, wherein R is C11Alkyl；Dodecanamide propyl hydroxy sulfo lycine, RCONH (CH2)3N+(CH3)2CH2CH(OH)CH2SO3 -, wherein R is C11Alkyl；Dodecanamide propyl amine oxide, CH3(CH2)10CONH(CH2)3N(CH3)2O；Acrylic acid-ethylene pyridine co-polymer, (CH2CHC5H4N)x-(CH2CHCOOH)y, wherein x, y are 10,000.
Embodiment 1
Amphoteric ion type asphalt warm-mix agent raw materials quality percentage ratio is:
Cocamido propyl betaine: 18.5wt%
Dodecanamide propyl hydroxy sulfo lycine: 0.5wt%
Dodecanamide propyl amine oxide: 11.5wt%
Acrylic acid-ethylene pyridine co-polymer: 0.8wt%
Oxalic acid: 0.3 wt%
Water: 68.5wt%.
By proportioning, cocamido propyl betaine, dodecanamide propyl hydroxy sulfo lycine, dodecanamide propyl amine oxide, acrylic acid-ethylene pyridine co-polymer and water are added container, stirring is warming up to 63 DEG C, add oxalic acid, adjusting pH is 6.5, constant temperature stirs 0.5 hour, obtains amphoteric ion type asphalt warm-mix agent.
Embodiment 2
Amphoteric ion type asphalt warm-mix agent raw materials quality percentage ratio is:
Lauroylamidopropyl betaine: 0.6wt%
Cocoamido propyl hydroxy sulfobetaine: 17wt%
Dodecanamide propyl amine oxide: 0.4wt%
Acrylic acid-ethylene pyridine co-polymer: 4wt%
Formic acid: 1.2 wt%
Water: 76.8wt%.
By proportioning, lauroylamidopropyl betaine, cocoamido propyl hydroxy sulfobetaine, dodecanamide propyl amine oxide, acrylic acid-ethylene pyridine co-polymer and water are added container, stirring is warming up to 71 DEG C, add formic acid, adjusting pH is 6.0, constant temperature stirs 1 hour, obtains amphoteric ion type asphalt warm-mix agent.
Embodiment 3
Amphoteric ion type asphalt warm-mix agent raw materials quality percentage ratio is:
Cocamido propyl betaine: 10.6wt%
Cocoamido propyl hydroxy sulfobetaine: 9.5wt%
Dodecanamide propyl amine oxide: 18wt%
Acrylic acid-ethylene pyridine co-polymer: 9wt%
Boric acid: 2.6 wt%
Water: 50.3wt%.
By proportioning, cocamido propyl betaine, cocoamido propyl hydroxy sulfobetaine, dodecanamide propyl amine oxide, acrylic acid-ethylene pyridine co-polymer and water are added container, stirring is warming up to 78 DEG C, add boric acid, adjusting pH is 5.5, constant temperature stirs 1.5 hours, obtains amphoteric ion type asphalt warm-mix agent.
Embodiment 4
Asphalt is carried out the method specified according to " standard specification for construction and acceptance of highway asphalt pavement " (JTG F40-2004) warm mix and traditional heat is mixed, and carries out performance of asphalt mixture evaluation.Wherein, by the amphoteric ion type asphalt warm-mix agent of preparation in embodiment 1,2,3 according to the 5wt% of asphalt content, add in asphalt in the way of sprinkling, be prepared as compound test specimen A, B, C；The heat process of mixing is added without asphalt warm-mix agent.This test uses 90#A level Colophonium, and bitumen aggregate ratio (bituminous concrete medium pitch and the percent of mineral aggregate mass ratio) is 6.0%, and the grating of building stones is shown in Table 1, and Evaluation results is shown in Table 2.Specifically mix and stir process as follows:
Warm mix:
1, weighing building stones by set amount to heat 4 hours in the baking oven of 120 DEG C, Colophonium heats 2 hours in 120 DEG C of baking ovens, and mixing machine temperature is set as 120 DEG C.
2, rubble material is initially charged at a set temperature mixing machine, uniform stirring 3 minutes.
3, Colophonium is added mixing machine, and at once warm-mixing agent is sprayed in Colophonium by set amount, mix and stir 1.5 minutes, add breeze, continue to mix and stir 3.5 minutes under design temperature.
Heat is mixed:
1, weighing building stones by set amount to heat 4 hours in the baking oven of 150 DEG C, Colophonium heats 2 hours in 150 DEG C of baking ovens, and mixing machine temperature is set as 150 DEG C.
2, rubble material is initially charged at a set temperature mixing machine, uniform stirring 3 minutes.
3, Colophonium is added mixing machine, mix and stir 1.5 minutes, add breeze, continue to mix and stir 3.5 minutes under design temperature.
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 | 0.6～0.3 | 0.3～0.15 | 0.15～0.075 | Less than 0.075 |
| Ratio/wt% | 4.5 | 22 | 24 | 14.2 | 14.5 | 6.2 | 4.2 | 4.2 | 5.8 | 0.4 |
Table 2 Warm-Mix Bitumen Mixture the performance test results.
| Project | Mix and stir temperature/DEG C | Forming temperature/DEG C | Degree of stability/kN | Residual stability ratio (%) | Retained strength ratio (%) | Dynamic stability (secondary/mm) |
| A | 120 | 105 | 9.48 | 86.3 | 81.7 | 1164 |
| B | 120 | 110 | 10.60 | 88.1 | 83.2 | 1271 |
| C | 120 | 110 | 11.45 | 89.2 | 84.8 | 1355 |
| Heat is mixed | 150 | 120 | 11.56 | 90.3 | 85.5 | 1406 |
| Technical standard * | -- | -- | ≥8 | ≥80 | ≥75 | ≥1000 |
Test data shows, Warm-Mix Bitumen Mixture is in the case of mixing and stirring and substantially reducing by 15～30 DEG C with forming temperature relative to hot-mix asphalt mixture, and property indices is satisfied by " standard specification for construction and acceptance of highway asphalt pavement " (JTG
F40-2004) requirement.
Claims (8)
1. an amphoteric ion type asphalt warm-mix agent, it is characterised in that: the most composed of the following components:
Alkylamide propyl-betaine: 0.1wt%～20wt%
Alkylamide propyl hydroxy sulfo lycine: 0.1wt%～20wt%
Dodecanamide propyl amine oxide: 0.1wt%～20wt%
Acrylic acid-ethylene pyridine co-polymer: 0.1wt%～10wt%
Acid catalyst: 0.1 wt%～3 wt%
Water: 27wt %～99.5wt%；Described acid catalyst is C1～C6Organic monoacid or inorganic weak acid, one or more in formic acid, acetic acid, propanoic acid, oxalic acid and tartaric acid of organic monoacid, one or more in silicic acid, carbonic acid and boric acid of inorganic weak acid.
2. according to the asphalt warm-mix agent described in claim 1, it is characterised in that: the most composed of the following components:
Alkylamide propyl-betaine: 0.5wt%～10wt%
Alkylamide propyl hydroxy sulfo lycine: 0.5wt%～10wt%
Dodecanamide propyl amine oxide: 0.5wt%～10wt%
Acrylic acid-ethylene pyridine co-polymer: 0.5wt%～5wt%
Acid catalyst: 0.2 wt%～2 wt%
Water: 63wt %～97.8wt%.
3. according to the asphalt warm-mix agent described in claim 1, it is characterised in that: the structural formula of described alkylamide propyl-betaine is RCONH (CH2)3N+(CH3)2CH2COO-, wherein R is C11～C15Alkyl.
4. according to the asphalt warm-mix agent described in claim 1, it is characterised in that: the structural formula of described alkylamide propyl hydroxy sulfo lycine is RCONH (CH2)3N+(CH3)2CH2CH(OH)CH2SO3 -, wherein R is C11～C15Alkyl.
5. according to the asphalt warm-mix agent described in claim 1, it is characterised in that: the structural formula of described acrylic acid-ethylene pyridine co-polymer is: (CH2CHC5H4N)x-(CH2CHCOOH)y, wherein x, y are respectively less than 100,000.
6. the preparation method of the asphalt warm-mix agent described in a claim 1, it is characterized in that including following content: by proportioning, alkylamide propyl-betaine, alkylamide propyl hydroxy sulfo lycine, dodecanamide propyl amine oxide, acrylic acid-ethylene pyridine co-polymer and water are added container, stirring is warming up to 60～80 DEG C, add acid catalyst, adjusting pH is 5.0～7.0, constant temperature stirs 0.5～2 hour, obtains amphoteric ion type asphalt warm-mix agent.
7. the application in asphalt mixes and stirs of the asphalt warm-mix agent described in a claim 1, it is characterized in that comprising the steps: when building stones reach to mix and stir temperature, mix is uniform, add Colophonium, and amphoteric ion type asphalt warm-mix agent is joined in asphalt, then uniform mixing, adds breeze, uniform mixing.
8. according to the application described in claim 7, it is characterised in that: amphoteric ion type asphalt warm-mix agent adds according to 2wt%～10wt% of asphalt content.
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| CN108707341A (en) * | 2018-06-11 | 2018-10-26 | 江苏金阳新材料科技有限公司 | A kind of warm-mixed asphalt warm-mixing agent and its application process |
| CN115450086B (en) * | 2022-09-08 | 2023-10-13 | 广西北投交通养护科技集团有限公司 | Old cement concrete pavement reconstruction structure suitable for non-extra-heavy traffic grade and design method |
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| CN102093724A (en) * | 2009-12-09 | 2011-06-15 | 中国石油天然气股份有限公司 | Warm-mixed asphalt additive and preparation method thereof |
| CN102532925A (en) * | 2012-01-11 | 2012-07-04 | 李国涛 | Modified emulsified asphalt used for half warm mix modification and preparation method of the same |
| CN102795801A (en) * | 2012-08-17 | 2012-11-28 | 辽宁石油化工大学 | Asphalt warm mix additive for high grade road and preparation method thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102093724A (en) * | 2009-12-09 | 2011-06-15 | 中国石油天然气股份有限公司 | Warm-mixed asphalt additive and preparation method thereof |
| CN102532925A (en) * | 2012-01-11 | 2012-07-04 | 李国涛 | Modified emulsified asphalt used for half warm mix modification and preparation method of the same |
| CN102795801A (en) * | 2012-08-17 | 2012-11-28 | 辽宁石油化工大学 | Asphalt warm mix additive for high grade road and preparation method thereof |
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