CN103771749A - Environmental-friendly warm mixed asphalt additive and preparation method thereof - Google Patents
Environmental-friendly warm mixed asphalt additive and preparation method thereof Download PDFInfo
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- CN103771749A CN103771749A CN201210411167.8A CN201210411167A CN103771749A CN 103771749 A CN103771749 A CN 103771749A CN 201210411167 A CN201210411167 A CN 201210411167A CN 103771749 A CN103771749 A CN 103771749A
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- warm
- mixed asphalt
- asphalt additive
- additive
- micro powder
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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
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A30/00—Adapting or protecting infrastructure or their operation
- Y02A30/30—Adapting or protecting infrastructure or their operation in transportation, e.g. on roads, waterways or railways
Abstract
The invention discloses an environmental-friendly warm mixed asphalt additive and a preparation method thereof. The warm mixed asphalt additive comprises the following components in percentage by mass: 0.1wt%-10wt% of fatty alcohol poly-oxyethylene ether sodium sulfate, 0.1wt%-15wt% of alcohol ether phosphate ester, 1wt%-15wt% of inorganic micro powder and 60-98.8wt% of water. The preparation method comprises the following contents: fatty alcohol poly-oxyethylene ether sodium sulfate, alcohol ether phosphate ester, inorganic micro powder and water are added into a reactor according to the proportion, continuously stirred for 0.5-2 hours at a constant temperature of 40-60 DEG C, then heated to 60-80 DEG C and continuously stirred for 0.5-2 hours to obtain the warm mixed asphalt additive. The warm mixed asphalt additive provided by the invention can effectively reduce the high-temperature viscosity of asphalt, and has the advantages of stable property, easiness in collection of raw materials, low production cost, simple and convenient 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 eco-friendly 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 mixing and stirring construction temperature: cold-mix asphalt compound CMA (Cold Mix Asphalt) and hot-mix asphalt mixture HMA (Hot Mix Asphalt).Cold-mix asphalt compound generally adopt emulsified bitumen or eu-bitumen and gather materials under normal temperature state, mix and stir, making, without to gather materials and binder heat, 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 mix and stir under 150 ~ 180 ℃ of hot conditionss.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, mixing and stirring under hot conditions also caused the aging of pitch, 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 by reducing mixing and stirring and the temperature that paves of asphalt; 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 additive that can reduce by 135 ℃ of viscosity of pitch, change the viscosity-temperature curve of pitch from chemical terms, thereby reduce the temperature of mixing and stirring 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, to mix and stir with building stones, 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 simultaneously and mixed and stirred in tank, 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 pitch and mix and stir 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 and mix and stir 40 ℃ of left and right of temperature, and warm-mixed asphalt property indices is not less than hot asphalt, but lack relevant testing method and instance data support.The pungencys such as the acid base catalysator that this additive adopts in addition and toxicity are larger, easily cause harm and environmental pollution.
Summary of the invention
For the deficiencies in the prior art, the invention provides a kind of eco-friendly warm-mixed asphalt additive and preparation method thereof.The advantages such as warm-mixed asphalt additive of the present invention can effectively reduce the high temperature viscosity of pitch, and has stable performance, and raw material easily gathers, and production cost is low, and preparation method is easy and have wide range of applications.
Warm-mixed asphalt additive of the present invention, comprises by percentage to the quality:
(1) polyoxyethylenated alcohol sodium sulfate: 0.1wt%～10wt%
(2) alcohol ether phosphate: 0.1wt%～15wt%
(3) inorganic micro powder: 1wt%～15wt%
(4) water: 60wt % ~ 98.8wt%.
Warm-mixed asphalt additive of the present invention, preferably composition comprises by percentage to the quality:
(1) polyoxyethylenated alcohol sodium sulfate: 2wt%～5wt%
(2) alcohol ether phosphate: 5wt%～15wt%
(3) inorganic micro powder: 5wt%～15wt%
(4) water: 65wt% ~ 88wt%.
The chemical formula of described polyoxyethylenated alcohol sodium sulfate (AES) is RO (CH
2cH
2o)
n-SO
3na, wherein R is C
12～C
15alkyl, n=3.
The chemical formula of described alcohol ether phosphate (AEO) is RO (CH
2cH
2o)
n-PO (OH)
2, wherein R is C
12～C
14alkyl, n=3 or 9.
In warm-mixed asphalt additive of the present invention, described inorganic micro powder is that sodium silicoaluminate, activated alumina, vermiculite, slaked lime, wilkinite and gac etc. have one or more in the inorganic materials of stronger adsorptive power and ion-exchange capacity, preferred zeolite powder, the granularity of inorganic micro powder is 20～200 orders.
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, polyoxyethylenated alcohol sodium sulfate, alcohol ether phosphate, inorganic micro powder and water are added to container, constant temperature stirs, and heats up, and continues to stir, and obtains warm-mixed asphalt additive.Wherein, constant temperature whipping temp is 40～60 ℃, and churning time is 0.5 ~ 2 hour; Be warming up to 60～80 ℃, continue to stir 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.Wherein warm-mixed asphalt additive adds according to the 2wt ~ 10wt% of asphalt content.
Warm-mixed asphalt additive of the present invention and traditional warm-mixed asphalt additive comparison, have the following advantages:
(1) warm-mixed asphalt additive of the present invention, energy and pitch form micro-emulsion type emulsion, greatly reduce the high temperature viscosity of pitch, therefore can reduce mixing and stirring, pave and compacting temperature of asphalt, it mixes and stirs temperature can reduce by 15 ~ 30 ℃ than hot asphalt, reduce energy consumption approximately 30%, reduce in a large number the discharge of smog and objectionable impurities, reduce harm and environmental pollution.
(2) warm-mixed asphalt additive of the present invention, can strengthen the cohesive force of building stones, stone flour and pitch well, improves the antistripping of compound, can effectively prevent the rut of bituminous pavement under heavy traffic and Heavy Traffic condition to destroy.Reduced the ageing of asphalt of mixing and stirring in process, prolonging service life of pavement simultaneously.
(3) in warm-mixed asphalt additive of the present invention, AEO can be composite preferably with AES, and dispersion effect is good, and good stability can increase the plasticity of pitch, improves the ductility of pitch, effectively improves anti-cold cracking and the chronic fatigue performance of asphalt.
(4) in warm-mixed asphalt additive of the present invention, AES and AEO are environment-friendly type anion surfactant, and readily biodegradable is little to the pungency of human body, environmental friendliness, environmental protection.
(5) warm-mixed asphalt additive raw material of the present invention is simple, and production cost is low, and preparation method is easy, and only the simple mechanical stirring of need can be dispersed, 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.
Warm-mixed asphalt additive raw materials quality per-cent is:
Polyoxyethylenated alcohol sodium sulfate (C
12h
25o (CH
2cH
2o)
3-SO
3na) 0.5%;
Alcohol ether phosphate (C
12h
25o (CH
2cH
2o)
3-PO (OH)
2) 14.5%;
Zeolite powder (25 order) 14.5%;
Deionized water 70.5%.
Embodiment 1
Raw material is added in container according to proportioning, fully stir, be warming up to 42 ℃ and stir after 60 minutes, be warming up to 67 ℃, fully stir 55 minutes, be prepared into warm-mixed asphalt additive.
Embodiment 2
Warm-mixed asphalt additive raw materials quality per-cent is:
Polyoxyethylenated alcohol sodium sulfate (C
14h
29o (CH
2cH
2o)
3-SO
3na) 6.5%;
Alcohol ether phosphate (C
12h
25o (CH
2cH
2o)
9-PO (OH)
2) 0.4%;
Activated alumina (80 order) 2.5%;
Deionized water 90.6%.
Raw material is added in container according to proportioning, fully stir, be warming up to 50 ℃, stir after 65 minutes, be warming up to 70 ℃, fully stir 50 minutes, be prepared into warm-mixed asphalt additive.
Embodiment 3
Warm-mixed asphalt additive raw materials quality per-cent is:
Polyoxyethylenated alcohol sodium sulfate (C
12h
25o (CH
2cH
2o)
3-SO
3na) 5%;
Alcohol ether phosphate (C
12h
25o (CH
2cH
2o)
9-PO (OH)
2) 10%;
Zeolite powder (180 order) 5%;
Deionized water 80%.
Raw material is added in container according to proportioning, fully stir, be warming up to 55 ℃, stir after 50 minutes, be warming up to 75 ℃, fully stirring reaction, is prepared into warm-mixed asphalt additive.
Embodiment 4
Adopt respectively the warm mix mode of application additive of the present invention and traditional heat mode of mixing to carry out mixing and stirring of compound according to the method for " standard specification for construction and acceptance of highway asphalt pavement " (JTG F40-2004) regulation, and carry out performance of asphalt mixture evaluation.Wherein, the warm-mixed asphalt additive of preparation in embodiment 1,2,3, according to the 5wt% 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 (percentage ratio of bituminous concrete medium pitch and mineral aggregate mass ratio) is 6.0%, and the grating of building stones is in table 1, and Evaluation results is in table 2.The process of specifically mixing and stirring 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 amalgamator 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 at once warm-mixing agent is sprayed in pitch by set amount, mix and stir 1.5 minutes, then add breeze, under design temperature, continue to mix and stir 3.5 minutes.
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 amalgamator 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 and stir 1.5 minutes, then add breeze, under design temperature, continue to mix and stir 3.5 minutes.
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 Warm-Mix Bitumen Mixture the performance test results.
| Project | Mix and stir temperature/℃ | Mold temperature/℃ | Stability/kN | Residual stability is than (%) | Retained strength is than (%) | Dynamic stability (inferior/mm) |
| A | 120 | 110 | 10.34 | 89.0 | 85.9 | 1301 |
| B | 120 | 110 | 9.01 | 83.2 | 81.0 | 1206 |
| C | 120 | 105 | 8.59 | 82.5 | 79.6 | 1262 |
| Heat is mixed | 150 | 120 | 9.10 | 86.7 | 83.7 | 1471 |
| Technological standard * | -- | -- | ≥8 | ≥80 | ≥75 | ≥1000 |
Testing data shows, Warm-Mix Bitumen Mixture is in the situation that mixing and stirring with mold temperature with respect to 15～30 ℃ of obvious reductions of hot-mix asphalt mixture, and property indices all meets the requirement of " standard specification for construction and acceptance of highway asphalt pavement " (JTG F40-2004).
Claims (11)
1. an eco-friendly warm-mixed asphalt additive, is characterized in that: comprise by percentage to the quality following component:
Polyoxyethylenated alcohol sodium sulfate: 0.1wt%～10wt%
Alcohol ether phosphate: 0.1wt%～15wt%
Inorganic micro powder: 1wt%～15wt%
Water: 60wt % ~ 98.8wt%.
2. according to warm-mixed asphalt additive claimed in claim 1, it is characterized in that: comprise by percentage to the quality following component:
Polyoxyethylenated alcohol sodium sulfate: 2wt%～5wt%
Alcohol ether phosphate: 5wt%～15wt%
Inorganic micro powder: 5wt%～15wt%
Water: 65wt% ~ 88wt%.
3. according to warm-mixed asphalt additive claimed in claim 1, it is characterized in that: the chemical formula of described polyoxyethylenated alcohol sodium sulfate is RO (CH
2cH
2o)
n-SO
3na, wherein R is C
12～C
15alkyl, n=3.
4. according to warm-mixed asphalt additive claimed in claim 1, it is characterized in that: the chemical formula of described alcohol ether phosphate is RO (CH
2cH
2o)
n-PO (OH)
2, wherein R is C
12～C
14alkyl, n=3 or 9.
5. according to warm-mixed asphalt additive claimed in claim 1, it is characterized in that: described inorganic micro powder is one or more in sodium silicoaluminate, activated alumina, vermiculite, zeolite powder, slaked lime, wilkinite, quartz sand, ceramsite sand and gac.
6. according to warm-mixed asphalt additive claimed in claim 1, it is characterized in that: the granularity of inorganic micro powder is 20～200 orders.
7. according to the warm-mixed asphalt additive described in claim 5 or 6, it is characterized in that: described inorganic micro powder is zeolite powder.
8. the preparation method of a warm-mixed asphalt additive claimed in claim 1, it is characterized in that comprising following content: by proportioning, polyoxyethylenated alcohol sodium sulfate, alcohol ether phosphate, inorganic micro powder and water are added to container, constant temperature stirs, and heats up, continue to stir, obtain warm-mixed asphalt additive.
9. in accordance with the method for claim 8, it is characterized in that: constant temperature whipping temp is 40～60 ℃, churning time is 0.5 ~ 2 hour; Be warming up to 60～80 ℃, continue to stir 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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|---|---|---|---|
| CN201210411167.8A CN103771749B (en) | 2012-10-25 | 2012-10-25 | Environmental-friendly warm mixed asphalt additive and preparation method thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210411167.8A CN103771749B (en) | 2012-10-25 | 2012-10-25 | Environmental-friendly warm mixed asphalt additive and preparation method thereof |
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| CN103771749B CN103771749B (en) | 2015-07-22 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108727844A (en) * | 2018-06-11 | 2018-11-02 | 江苏金阳新材料科技有限公司 | A kind of the warm-mixed asphalt warm-mixing agent and its application process of phosphate ester-containing salt |
| CN111004616A (en) * | 2020-03-06 | 2020-04-14 | 山东新港化工有限公司 | Heavy oil reservoir cold recovery huff and puff self-emulsifying corrosion-inhibition viscosity reducer and preparation method and application thereof |
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|---|---|---|---|---|
| CN1673282A (en) * | 2004-03-26 | 2005-09-28 | 天津市市政工程研究院 | Asphalt modifier and its usage |
| WO2009080614A1 (en) * | 2007-12-21 | 2009-07-02 | Basf Se | Aqueous polymer dispersions, method for the production and use thereof |
| CN102234433A (en) * | 2010-04-23 | 2011-11-09 | 中国石油化工股份有限公司 | Frost-resistant emulsified asphalt for roads and preparation method thereof |
| CN102408602A (en) * | 2011-07-27 | 2012-04-11 | 上海浦东路桥建设股份有限公司 | Direct-feeding type asphalt warm-mix modifier as well as preparation method and application thereof |
-
2012
- 2012-10-25 CN CN201210411167.8A patent/CN103771749B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1673282A (en) * | 2004-03-26 | 2005-09-28 | 天津市市政工程研究院 | Asphalt modifier and its usage |
| WO2009080614A1 (en) * | 2007-12-21 | 2009-07-02 | Basf Se | Aqueous polymer dispersions, method for the production and use thereof |
| CN102234433A (en) * | 2010-04-23 | 2011-11-09 | 中国石油化工股份有限公司 | Frost-resistant emulsified asphalt for roads and preparation method thereof |
| CN102408602A (en) * | 2011-07-27 | 2012-04-11 | 上海浦东路桥建设股份有限公司 | Direct-feeding type asphalt warm-mix modifier as well as preparation method and application thereof |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108727844A (en) * | 2018-06-11 | 2018-11-02 | 江苏金阳新材料科技有限公司 | A kind of the warm-mixed asphalt warm-mixing agent and its application process of phosphate ester-containing salt |
| CN111004616A (en) * | 2020-03-06 | 2020-04-14 | 山东新港化工有限公司 | Heavy oil reservoir cold recovery huff and puff self-emulsifying corrosion-inhibition viscosity reducer and preparation method and application thereof |
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| Publication number | Publication date |
|---|---|
| CN103771749B (en) | 2015-07-22 |
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