CN104419209A - Anionic asphalt temperature mixed agent and preparation method thereof - Google Patents
Anionic asphalt temperature mixed agent and preparation method thereof Download PDFInfo
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Abstract
The invention discloses an anionic asphalt temperature mixed agent and a preparation method thereof, The anionic asphalt temperature mixed agent comprises the following components by weight percentage: 0.1-5wt% of carboxylic acid high-molecular component, 0.1-5wt% of sulfuric ester high-molecular component, 0.1-5wt% of sulfonic acid high-molecular component, 0.1-20wt% of low molecular component, 1-15wt% of inorganic micro powder and 50-98.6wt% of water, The preparation method comprises the following steps: adding water in a container, respectively adding the carboxylic acid high-molecular component, the sulfuric ester high-molecular component and sulfonic acid high-molecular component, stirring for 1-2 hours under 40-60 DEG C, then adding the low molecular component and the inorganic micro powder, heating to 60-80 DEG C, continuously performing isothermal stirring for 0.5-1 hour to obtain the anionic asphalt temperature mixed agent. The anionic asphalt temperature mixed agent can effectively reduce the high temperature viscosity of asphalt, and has the advantages of good dispersion, stable performance, easy acquisition of raw materials, low production cost, simple preparation method and wide application scope.
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 anionic asphalt warm-mix agent and preparation method thereof.
Background technology
The asphalt used in current road engineering 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 to mix and stir under normal temperature state, making, without the need to to gather materials and binder heats, can mass energy be saved like this.But cold-mix asphalt compound initial stage pavement performance is poor, be difficult to the requirement meeting 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 DEG C of hot conditionss.By building stones, asphalt heating to so high temperature, consume mass energy.A large amount of CO is created in addition in hot-mix asphalt mixture production process
2, flue dust and obnoxious flavour (CO, SO
2, NO
xdeng), 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 pitch, reduces the pavement performance of asphalt.
For protection of the environment, save energy; the research of Warm-Mix Bitumen Mixture WMA (Warm Mix Asphalt) has been carried out 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 paving material of asphalt; reach the energy consumption reduced in Process of Pitch Mixture Production, reduce CO
2deng gas and dust discharge amount, ensure that Warm-Mix Bitumen Mixture has the pavement performance substantially identical with hot-mix asphalt mixture and construction workability simultaneously.
At present, warm mix asphalt technologies mainly contains three kinds of modes: one is in pitch, add a kind of additive that can reduce pitch 135 DEG C of viscosity in advance, chemically angle changes the viscosity-temperature curve of pitch, thus reduce pitch and building stones mix and stir temperature, but namely 60 DEG C of viscosity that this method also can reduce pitch usually reduce the high-temperature stability of compound; Two is the emulsified bitumens adopting solid content higher, and mix and stir with building stones at 80 ~ 120 DEG C of temperature, which is low compared with the temperature of hot asphalt about 30 ~ 50 DEG C; Three is when mixing compound, water and pitch are added simultaneously to mix and stir in tank, because the existence of water makes asphalt foaming, reaches viscosity reducing effect.If but the method amount of water is excessive, then can produce a large amount of water vapour 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 that is made in advance, then rosin quaternary ammonium salt, aromatic hydrocarbon quaternary ammonium salt emulsifier, aliphatic hydrocarbon quaternary ammonium salt emulsifier, aniorfic surfactant is added successively, stirring and dissolving, again the polyacrylamide solution be 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 is complicated, adds difficulty and the cost of preparation, is unfavorable for practical application.CN102268189A discloses a kind of warm-mixed asphalt additive and preparation method thereof, and it is the additive adopting a kind of organic silicon modified by polyether polymkeric substance to form in solvent system.Effectively can 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 testing method and instance data support.In addition the pungency such as acid base catalysator that adopts of this additive and toxicity comparatively large, easily cause harm and environmental pollution.
Summary of the invention
For the deficiencies in the prior art, the invention provides a kind of anionic asphalt warm-mix agent and preparation method thereof.Asphalt warm-mix agent of the present invention effectively can reduce the high temperature viscosity of pitch, and has stable performance, the advantages such as raw material easily gathers, and production cost is low, and preparation method is easy and have wide range of applications.
Anionic asphalt warm-mix agent of the present invention, comprises by weight percentage:
(1) carboxylic acid type high molecular component: 0.1wt% ~ 5wt%
(2) sulfuric acid ester type high molecular component: 0.1wt% ~ 5wt%
(3) sulfonic acid type high molecular component: 0.1wt% ~ 5wt%
(4) low-molecular-weight component: 0.1wt% ~ 20wt%
(5) inorganic micro powder: 1wt% ~ 15wt%
(6) water: 50wt % ~ 98.6wt%.
Anionic asphalt warm-mix agent of the present invention, preferably composition comprises by weight percentage:
(1) carboxylic acid type high molecular component: 1wt% ~ 3wt%
(2) sulfuric acid ester type high molecular component: 1wt% ~ 3wt%
(3) sulfonic acid type high molecular component: 1wt% ~ 3wt%
(4) low-molecular-weight component: 2wt% ~ 10wt%
(5) inorganic micro powder: 2wt% ~ 10wt%
(6) water: 71wt% ~ 93wt%.
Described carboxylic acid type high molecular component is selected from one or more in polyacrylic acid and multipolymer thereof, polybutene acid and multipolymer, acrylic acid-maleic anhydride copolymer and derivative thereof, its molecular weight 3000 ~ 30000, preferably 5000 ~ 20000.
Described sulfuric acid ester type high molecular component is selected from one or more in polyvinyl alcohol sulfuric ester, ethylene oxide ether sulfate and derivative thereof, its molecular weight 3000 ~ 30000, preferably 5000 ~ 20000.
Described sulfonic acid type high molecular component is selected from one or more in sulfonated polystyrene, sulfonated polybutadiene, Phenylsulfonic acid formaldehyde condensation products, naphthalene sulfonic acidformaldehyde condensation product, sulfonated lignin, its molecular weight 3000 ~ 30000, preferably 5000 ~ 20000.
Described low-molecular-weight component is selected from Sodium dodecylbenzene sulfonate, sodium lauryl sulphate, lauryl sulfosuccinic acid monoester disodium, fatty alcohol-polyoxyethylene ether sulfosuccinic acid monoesters disodium, Coconut Fatty Acid Monoethanolamide sulfosuccinic acid monoesters disodium, alkylpolyoxyethylene sodium sulfate, alkylpolyoxyethylene carboxylic acid sodium, sodium laurate, sodium laurylsulfonate, dioctyl succinate disulfonate acid, oleoyl N-methyltaurine sodium, sodium methylene bis-naphthalene sulfonate, methyl stearate polyethenoxy ether sulphonate, Monododecylphosphate potassium, lauryl alcohol phosphoric acid ester, lauryl alcohol phosphoric acid ester potassium, one or more in lauric acid potash soap, preferred Sodium dodecylbenzene sulfonate, sodium lauryl sulphate and lauric acid potash soap.
In anionic asphalt warm-mix agent of the present invention, described inorganic micro powder is one or more that quartz sand, zeolite powder, sodium silicoaluminate, activated alumina, vermiculite, slaked lime, wilkinite and gac etc. have in the inorganic materials of stronger adsorptive power and ion-exchange capacity, preferred activated alumina, the granularity of inorganic micro powder is 20 ~ 200 orders.
In anionic asphalt warm-mix agent of the present invention, also can need to add other additive according to practical application, as oxide compounds such as dispersion agent, antistripping agent, whipping agent, antiaging agent, polymer modifiers and magnesium oxide, calcium oxide and Vanadium Pentoxide in FLAKESs, the add-on of additive accounts for the 0.1wt% ~ 4.9wt% of warm-mixing agent gross weight.
The preparation method of anionic asphalt warm-mix agent of the present invention, comprise following content: first add in container by water by proportioning, add carboxylic acid type high molecular component, sulfuric acid ester type high molecular component and sulfonic acid type high molecular component respectively, at 40 ~ 60 DEG C, stir 1 ~ 3 hour, then by proportioning, low-molecular-weight component and inorganic micro powder are added, be warming up to 60 ~ 80 DEG C, continue stirring 0.5 ~ 1 hour, obtain anionic asphalt warm-mix agent.
In the inventive method, after preferably adding each high molecular component, all stir 0.5 ~ 1 hour,
The application of anionic asphalt warm-mix agent of the present invention in asphalt mixes and stirs, comprise the steps: to reach design temperature when building stones, uniform stirring 1 ~ 5min, add pitch, and anionic asphalt warm-mix agent is joined in asphalt mix and stir 1 ~ 5min, add breeze, evenly mix and stir 1 ~ 5min.Wherein anionic asphalt warm-mix agent adds according to the 2wt% ~ 10wt% of asphalt content.
Anionic asphalt warm-mix agent of the present invention compares with traditional asphalt warm-mixing agent, has the following advantages:
(1) in anionic asphalt warm-mix agent of the present invention, each high molecular component and low-molecular-weight component are gentle aniorfic surfactant, each component cooperatively interacts, dispersion effect is good, good stability, forms stable anionic asphalt warm-mix agent, little to the pungency of human body, environmental friendliness, environmental protection.
(2) anionic asphalt warm-mix agent of the present invention, energy and pitch form micro-emulsion type emulsion, greatly reduce the high temperature viscosity of pitch, 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 than hot asphalt, reduce energy consumption about 30%, a large amount of discharge reducing smog and objectionable impurities, reduces harm and environmental pollution.
(3) anionic asphalt warm-mix agent of the present invention, the cohesive force of building stones, stone flour and pitch can be strengthened well, improve the resistance to flaking of compound, effectively can prevent the Rutting damage of bituminous pavement under heavy traffic and Heavy Traffic condition, decrease the ageing of asphalt in the process of mixing and stirring, prolonging service life of pavement simultaneously.
(4) anionic asphalt warm-mix agent raw material sources of the present invention are extensive, 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.
Embodiment 1
Anionic asphalt warm-mix agent raw materials quality per-cent is:
Polyacrylic acid (molecular weight 5000): 0.2%;
Polyvinyl alcohol sulfuric ester (molecular weight 12000): 0.2%;
Sulfonated polystyrene (molecular weight 25000): 4.5%;
Lauryl alcohol phosphoric acid ester potassium: 9.2%;
Activated alumina (40 order): 14.5%;
Water: 71.4%.
First water is added in container by proportioning, control temperature is 42 DEG C, adds polyacrylic acid, and constant temperature stirs 30 minutes, add polyvinyl alcohol sulfuric ester again, constant temperature stirs 35 minutes, then adds sulfonated polystyrene, and constant temperature stirs 55 minutes, finally by proportioning, lauryl alcohol phosphoric acid ester potassium and activated alumina are added, be warming up to 68 DEG C, continue stirring 50 minutes, obtain anionic asphalt warm-mix agent.
Embodiment 2
Anionic asphalt warm-mix agent raw materials quality per-cent is:
Polybutene acid (molecular weight 5000): 4.6%;
Ethylene oxide ether sulfate (molecular weight 15000): 2.5%;
Phenylsulfonic acid formaldehyde condensation products (molecular weight 10000): 0.2%;
Lauric acid potash soap: 18.5%;
Zeolite powder (80 order): 7.5%;
Water: 66.7%.
First water is added in container by proportioning, control temperature is 50 DEG C, adds polybutene acid, and constant temperature stirs 50 minutes, add ethylene oxide ether sulfate again, constant temperature stirs 55 minutes, then adds Phenylsulfonic acid formaldehyde condensation products, and constant temperature stirs 35 minutes, finally by proportioning, fatty acid potassium soap and activated alumina are added, be warming up to 62 DEG C, continue stirring 55 minutes, obtain anionic asphalt warm-mix agent.
Embodiment 3
Anionic asphalt warm-mix agent raw materials quality per-cent is:
Polypropylene-butene multipolymer (molecular weight 10000): 2.2%;
Polyvinyl alcohol sulfuric ester (molecular weight 12000): 4.3%;
Sodium lignosulfonate (molecular weight 30000): 2.0%;
Sulfonated polybutadiene: 1.0%;
Monododecylphosphate potassium: 0.7%;
Activated alumina (160 order): 2.5%;
Water: 87.3%.
First add in container by water by proportioning, control temperature is 59 DEG C, adds polypropylene-butene multipolymer, constant temperature stirs 45 minutes, then adds polyvinyl alcohol sulfuric ester, and constant temperature stirs 40 minutes, add sulfonated polybutadiene, constant temperature stirs 35 minutes, adds sodium lignosulfonate, and constant temperature stirs 45 minutes, finally by proportioning, Monododecylphosphate potassium and activated alumina are added, be warming up to 78 DEG C, continue stirring 55 minutes, obtain anionic asphalt warm-mix agent.
Embodiment 4
The method specified according to " standard specification for construction and acceptance of highway asphalt pavement " (JTG F40-2004) adopts the warm mix mode of anionic warm-mixing agent of the present invention and traditional heat mode of mixing to carry out mixing and stirring of compound respectively, and carries out performance of asphalt mixture evaluation.Wherein, by the anionic warm-mixing agent of preparation in embodiment 1,2,3 according to the 5wt% of asphalt content, add 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.Process of specifically mixing and stirring is as follows:
Warm mix:
1, take building stones by set amount to heat 4 hours in the baking oven of 120 DEG C, pitch heats 2 hours in 120 DEG C of baking ovens, and mixing machine temperature is set as 120 DEG C.
2, rubble material is first added mixing machine at a set temperature, uniform stirring 3 minutes.
3, pitch is added mixing machine, and at once warm-mixing agent is sprayed in pitch by set amount, mix and stir 1.5 minutes, then add breeze, continue to mix and stir 3.5 minutes under design temperature.
Heat is mixed:
1, take building stones by set amount to heat 4 hours in the baking oven of 150 DEG C, pitch heats 2 hours in 150 DEG C of baking ovens, and mixing machine temperature is set as 150 DEG C.
2, rubble material is first added mixing machine at a set temperature, uniform stirring 3 minutes.
3, pitch is added mixing machine, mix and stir 1.5 minutes, then 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 | Be 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 | Mold temperature/DEG C | Stability/kN | Residual stability ratio (%) | Retained strength ratio (%) | Dynamic stability (secondary/mm) |
| A | 120 | 105 | 8.41 | 82.0 | 77.5 | 1126 |
| B | 120 | 110 | 9.45 | 85.0 | 80.3 | 1255 |
| C | 120 | 110 | 9.26 | 84.6 | 79.5 | 1241 |
| Heat is mixed | 150 | 120 | 9.90 | 88.3 | 81.0 | 1308 |
| Technological standard * | -- | -- | ≥8 | ≥80 | ≥75 | ≥1000 |
Testing data shows, Warm-Mix Bitumen Mixture when mix and stir obviously reduce by 15 ~ 30 DEG C with mold temperature relative to hot-mix asphalt mixture, property indices all meets the requirement of " standard specification for construction and acceptance of highway asphalt pavement " (JTG F40-2004).
Claims (10)
1. an anionic asphalt warm-mix agent, comprise by weight percentage: carboxylic acid type high molecular component 0.1wt% ~ 5wt%, sulfuric acid ester type high molecular component: 0.1wt% ~ 5wt%, sulfonic acid type high molecular component: 0.1wt% ~ 5wt%, low-molecular-weight component: 0.1wt% ~ 20wt%, inorganic micro powder: 1wt% ~ 15wt%, water: 50wt % ~ 98.6wt%;
Wherein, described low-molecular-weight component is selected from Sodium dodecylbenzene sulfonate, sodium lauryl sulphate, lauryl sulfosuccinic acid monoester disodium, fatty alcohol-polyoxyethylene ether sulfosuccinic acid monoesters disodium, Coconut Fatty Acid Monoethanolamide sulfosuccinic acid monoesters disodium, alkylpolyoxyethylene sodium sulfate, alkylpolyoxyethylene carboxylic acid sodium, sodium laurate, sodium laurylsulfonate, dioctyl succinate disulfonate acid, oleoyl N-methyltaurine sodium, sodium methylene bis-naphthalene sulfonate, methyl stearate polyethenoxy ether sulphonate, Monododecylphosphate potassium, lauryl alcohol phosphoric acid ester, one or more in lauryl alcohol phosphoric acid ester potassium or lauric acid potash soap.
2. according to asphalt warm-mix agent according to claim 1, it is characterized in that: asphalt warm-mix agent comprises by weight percentage: carboxylic acid type high molecular component: 1wt% ~ 3wt%, sulfuric acid ester type high molecular component: 1wt% ~ 3wt%, sulfonic acid type high molecular component: 1wt% ~ 3wt%, low-molecular-weight component: 2wt% ~ 10wt%, inorganic micro powder: 2wt% ~ 10wt%, water: 71wt% ~ 93wt%.
3. according to the asphalt warm-mix agent described in claim 1 or 2, it is characterized in that: described carboxylic acid type high molecular component is selected from one or more in polyacrylic acid and multipolymer, polybutene acid and multipolymer, acrylic acid-maleic anhydride copolymer and derivative thereof, and its molecular weight is 3000 ~ 30000.
4. according to the asphalt warm-mix agent described in claim 1 or 2, it is characterized in that: described sulfuric acid ester type high molecular component is selected from one or more in polyvinyl alcohol sulfuric ester, ethylene oxide ether sulfate and derivative thereof, and its molecular weight is 3000 ~ 30000.
5. according to the asphalt warm-mix agent described in claim 1 or 2, it is characterized in that: described sulfonic acid type high molecular component is selected from one or more in sulfonated polystyrene, sulfonated polybutadiene, Phenylsulfonic acid formaldehyde condensation products, naphthalene sulfonic acidformaldehyde condensation product, sulfonated lignin, and its molecular weight is 3000 ~ 30000.
6. according to the asphalt warm-mix agent described in claim 1 or 2, it is characterized in that: described inorganic micro powder is one or more in quartz sand, zeolite powder, sodium silicoaluminate, activated alumina, vermiculite, slaked lime, wilkinite and gac, the granularity of inorganic micro powder is 20 ~ 200 orders.
7. according to the asphalt warm-mix agent described in claim 1 or 2, it is characterized in that: add one or more in dispersion agent, antistripping agent, whipping agent, antiaging agent, polymer modifiers and magnesium oxide, calcium oxide and Vanadium Pentoxide in FLAKES in anionic asphalt warm-mix agent, add-on accounts for the 0.1wt% ~ 4.9wt% of asphalt warm-mix agent gross weight.
8. the preparation method of an anionic asphalt warm-mix agent according to claim 1, it is characterized in that comprising following content: first water is added in container by proportioning, add carboxylic acid type high molecular component, sulfuric acid ester type high molecular component and sulfonic acid type high molecular component respectively, at 40 ~ 60 DEG C, stir 1 ~ 3 hour, then by proportioning, low-molecular-weight component and inorganic micro powder are added, be warming up to 60 ~ 80 DEG C, continue stirring 0.5 ~ 1 hour, obtain anionic asphalt warm-mix agent.
9. the application of asphalt warm-mix agent according to claim 1 in asphalt mixes and stirs, it is characterized in that comprising the steps: to reach design temperature when building stones, uniform stirring 1 ~ 5min, add pitch, and anionic asphalt warm-mix agent is joined in asphalt mix and stir 1 ~ 5min, add breeze, evenly mix and stir 1 ~ 5min.
10. according to application according to claim 9, it is characterized in that: anionic asphalt warm-mix agent adds according to the 2wt% ~ 10wt% of asphalt content.
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| CN104861675A (en) * | 2015-05-27 | 2015-08-26 | 湖州华仑助剂科技有限公司 | Asphalt modifier |
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| CN106116370A (en) * | 2016-07-02 | 2016-11-16 | 胡运冲 | A kind of resistant to elevated temperatures Modified Bitumen Pavement mortar and preparation method thereof |
| CN106751292A (en) * | 2016-12-31 | 2017-05-31 | 程鸣 | The pitch warm-mixing agent that is modified |
| CN107501969A (en) * | 2017-10-10 | 2017-12-22 | 唐林元 | One kind foaming viscosity reduction type warm-mixing agent and preparation method thereof |
| CN107779217A (en) * | 2016-08-25 | 2018-03-09 | 神华集团有限责任公司 | A kind of coal liquefaction residue emulsified asphalt and its preparation method and application |
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| CN108973262A (en) * | 2018-07-24 | 2018-12-11 | 芜湖市棠华建材科技有限公司 | A kind of low temperature resistant SBS modified asphalt waterproof coiled material and preparation method thereof |
| CN110171937A (en) * | 2018-11-06 | 2019-08-27 | 山东高速路用新材料技术有限公司 | The modified Warm-Mix Bitumen Mixture of a kind of warm-mixing agent, SBS/SBR and preparation method |
| CN110171937B (en) * | 2018-11-06 | 2021-10-22 | 山东高速路用新材料技术有限公司 | Warm-mix agent, SBS/SBR modified warm-mix asphalt mixture and preparation method |
| CN109574550A (en) * | 2018-12-29 | 2019-04-05 | 苏州科技大学 | Asphalt concrete pavement pit repairing material and preparation method |
| CN109574550B (en) * | 2018-12-29 | 2021-08-24 | 苏州科技大学 | Asphalt concrete pavement pit repairing material and preparation method thereof |
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