CN104419209B - A kind of anionic asphalt warm-mix agent and preparation method thereof - Google Patents
A kind of anionic asphalt warm-mix agent and preparation method thereof Download PDFInfo
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Abstract
The invention discloses anionic asphalt warm-mix agent and preparation method thereof, anionic asphalt warm-mix agent includes 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%.Preparation method is as follows: first add water in container, it is separately added into carboxylic acid type high molecular component, sulfuric acid ester type high molecular component and sulfonic acid type high molecular component, stir 1～2 hour at 40～60 DEG C, then low-molecular-weight component and inorganic micro powder are added, it is warming up to 60～80 DEG C, continue constant temperature to stir 0.5～1 hour, obtain anionic asphalt warm-mix agent.The advantages such as the anionic asphalt warm-mix agent of the present invention can effectively reduce the high temperature viscosity of Colophonium, and has scattered, 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 anionic 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, anionic 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
For the deficiencies in the prior art, the invention provides a kind of anionic 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.
Anionic asphalt warm-mix agent of the present invention, includes 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 constitutes by weight percentage and includes:
(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%.
One or more in polyacrylic acid and copolymer thereof, polybutene acid and copolymer, acrylic acid-maleic anhydride copolymer and derivant thereof of described carboxylic acid type high molecular component, its molecular weight 3000～30000, preferably 5000～20000.
One or more in polyvinyl alcohol sulfuric ester, ethylene oxide ether sulfate and derivant thereof of described sulfuric acid ester type high molecular component, its molecular weight 3000～30000, preferably 5000～20000.
One or more in sulfonated polystyrene, sulfonated polybutadiene, benzenesulfonic acid formaldehyde condensation products, naphthalene sulfonic acid-formaldehyde condensation product, the lignosulfonates of described sulfonic acid type high molecular component, its molecular weight 3000～30000, preferably 5000～20000.
Described low-molecular-weight component is selected from dodecylbenzene sodium 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, dodecyl sodium sulfate, dioctyl succinate disulfonate acid, oleoyl N-methyltaurine sodium, sodium methylene bis-naphthalene sulfonate, methyl stearate polyethenoxy ether sulphonate, Monododecylphosphate potassium, lauryl alcohol phosphate ester, lauryl alcohol phosphate ester potassium, one or more in lauric acid potash soap, preferably dodecylbenzene sodium sulfonate, sodium lauryl sulphate and lauric acid potash soap.
In anionic asphalt warm-mix agent of the present invention, described inorganic micro powder is that quartz sand, zeolite powder, sodium aluminosilicate, activated alumina, Vermiculitum, slaked lime, bentonite and activated carbon etc. have one or more in the inorganic material of stronger absorbability and ion-exchange capacity, preferably activated alumina, the granularity of inorganic micro powder is 20～200 mesh.
In anionic asphalt warm-mix agent of the present invention, can also need to add other additive according to reality application, such as oxides such as dispersant, antistripping agent, foaming agent, age resister, polymer modifiers and magnesium oxide, calcium oxide and phosphorus pentoxides, the addition of additive accounts for 0.1wt%～4.9wt% of warm-mixing agent gross weight.
The preparation method of anionic asphalt warm-mix agent of the present invention, including following content: first add water in container by proportioning, it is separately added into carboxylic acid type high molecular component, sulfuric acid ester type high molecular component and sulfonic acid type high molecular component, 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, all stir after being preferably added to each high molecular component 0.5～1 hour,
The anionic asphalt warm-mix agent of the present invention application in asphalt mixes and stirs, comprise the steps: when building stones reach design temperature, uniform stirring 1～5min, add Colophonium, and anionic asphalt warm-mix agent joined asphalt mixes and stirs 1～5min, add breeze, uniformly mix and stir 1～5min.Wherein anionic asphalt warm-mix agent adds according to 2wt%～10wt% of asphalt content.
Anionic asphalt warm-mix agent of the present invention compares with traditional asphalt warm-mixing agent, has the advantage that
(1) in the anionic asphalt warm-mix agent of the present invention, each high molecular component and low-molecular-weight component are the anionic surfactant of gentleness, each component cooperates, dispersion effect is good, good stability, forms stable anionic asphalt warm-mix agent, little to the zest of human body, environmental friendliness, environmental protection.
(2) anionic asphalt warm-mix agent of the present invention, micro-emulsion type emulsion can be formed with Colophonium, greatly 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 than hot asphalt, reduce energy consumption about 30%, a large amount of minimizing smog and the discharge of harmful substance, reduce harm and environmental pollution.
(3) the anionic asphalt warm-mix agent of the present invention, the cohesive force of building stones, stone powder and Colophonium can be strengthened well, improve the resistance to flaking of compound, can effectively prevent the Rutting damage of bituminous paving under the conditions of heavy traffic and Heavy Traffic, decrease the ageing of asphalt during mixing and stirring, prolonging service life of pavement simultaneously.
(4) the 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 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.
Embodiment 1
Anionic asphalt warm-mix agent raw materials quality percentage ratio 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 phosphate ester potassium: 9.2%；
Activated alumina (40 mesh): 14.5%；
Water: 71.4%.
First add water in container by proportioning, controlling temperature is 42 DEG C, adds polyacrylic acid, and constant temperature stirs 30 minutes, add polyvinyl alcohol sulfuric ester, constant temperature stirs 35 minutes, is subsequently adding sulfonated polystyrene, and constant temperature stirs 55 minutes, finally by proportioning, lauryl alcohol phosphate ester potassium and activated alumina are added, it is warming up to 68 DEG C, continues stirring 50 minutes, obtain anionic asphalt warm-mix agent.
Embodiment 2
Anionic asphalt warm-mix agent raw materials quality percentage ratio is:
Polybutene acid (molecular weight 5000): 4.6%；
Ethylene oxide ether sulfate (molecular weight 15000): 2.5%；
Benzenesulfonic acid formaldehyde condensation products (molecular weight 10000): 0.2%；
Lauric acid potash soap: 18.5%；
Zeolite powder (80 mesh): 7.5%；
Water: 66.7%.
First add water in container by proportioning, controlling temperature is 50 DEG C, adds polybutene acid, and constant temperature stirs 50 minutes, add ethylene oxide ether sulfate, constant temperature stirs 55 minutes, is subsequently adding benzenesulfonic acid formaldehyde condensation products, and constant temperature stirs 35 minutes, finally by proportioning, fatty acid potassium soap and activated alumina are added, it is warming up to 62 DEG C, continues stirring 55 minutes, obtain anionic asphalt warm-mix agent.
Embodiment 3
Anionic asphalt warm-mix agent raw materials quality percentage ratio is:
Polypropylene-butene copolymer (molecular weight 10000): 2.2%；
Polyvinyl alcohol sulfuric ester (molecular weight 12000): 4.3%；
Sodium lignin sulfonate (molecular weight 30000): 2.0%；
Sulfonated polybutadiene: 1.0%；
Monododecylphosphate potassium: 0.7%；
Activated alumina (160 mesh): 2.5%；
Water: 87.3%.
First adding water in container by proportioning, controlling temperature is 59 DEG C, adds polypropylene-butene copolymer, constant temperature stirs 45 minutes, adds polyvinyl alcohol sulfuric ester, and constant temperature stirs 40 minutes, add sulfonated polybutadiene, constant temperature stirs 35 minutes, adds sodium lignin sulfonate, and constant temperature stirs 45 minutes, finally by proportioning, Monododecylphosphate potassium and activated alumina are added, it is warming up to 78 DEG C, continues 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) is respectively adopted the warm mix mode of anionic warm-mixing agent of the present invention and traditional heat mode of mixing carries out mixing and stirring of compound, 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 way of sprinkling, be prepared as compound test specimen A, B, C.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 | 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 |
| 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 (9)
1. an anionic asphalt warm-mix agent, include 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 dodecylbenzene sodium 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, dodecyl sodium sulfate, dioctyl succinate disulfonate acid, oleoyl N-methyltaurine sodium, sodium methylene bis-naphthalene sulfonate, methyl stearate polyethenoxy ether sulphonate, Monododecylphosphate potassium, lauryl alcohol phosphate ester, one or more in lauryl alcohol phosphate ester potassium or lauric acid potash soap；One or more in polyacrylic acid and copolymer, polybutene acid and copolymer, acrylic acid-maleic anhydride copolymer and derivant thereof of described carboxylic acid type high molecular component, its molecular weight is 3000～30000.
2. according to the asphalt warm-mix agent described in claim 1, it is characterized in that: asphalt warm-mix agent includes 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 characterised in that: one or more in polyvinyl alcohol sulfuric ester, ethylene oxide ether sulfate and derivant thereof of described sulfuric acid ester type high molecular component, 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: one or more in sulfonated polystyrene, sulfonated polybutadiene, benzenesulfonic acid formaldehyde condensation products, naphthalene sulfonic acid-formaldehyde condensation product, lignosulfonates of described sulfonic acid type high molecular component, 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 inorganic micro powder is one or more in quartz sand, zeolite powder, sodium aluminosilicate, activated alumina, Vermiculitum, slaked lime, bentonite and activated carbon, the granularity of inorganic micro powder is 20～200 mesh.
6. according to the asphalt warm-mix agent described in claim 1 or 2, it is characterized in that: adding one or more in dispersant, antistripping agent, foaming agent, age resister, polymer modifiers and magnesium oxide, calcium oxide and phosphorus pentoxide in anionic asphalt warm-mix agent, addition accounts for 0.1wt%～4.9wt% of asphalt warm-mix agent gross weight.
7. the preparation method of the anionic asphalt warm-mix agent described in a claim 1, it is characterized in that including following content: first add water in container by proportioning, it is separately added into carboxylic acid type high molecular component, sulfuric acid ester type high molecular component and sulfonic acid type high molecular component, 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.
8. 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 design temperature, uniform stirring 1～5min, add Colophonium, and anionic asphalt warm-mix agent joined asphalt mixes and stirs 1～5min, add breeze, uniformly mix and stir 1～5min.
9. according to the application described in claim 8, it is characterised in that: anionic asphalt warm-mix agent adds according to 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 |
| 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 |
| CN106084829B (en) * | 2016-07-11 | 2018-12-25 | 广东石油化工学院 | A kind of warm mix waste rubber powder modified asphalt mixture and preparation method thereof |
| CN107779217B (en) * | 2016-08-25 | 2020-06-02 | 神华集团有限责任公司 | Emulsified asphalt prepared from coal liquefaction residues and preparation method and application thereof |
| CN106751292B (en) * | 2016-12-31 | 2019-06-11 | 南京交通工程有限公司 | The modified warm-mixing agent of pitch |
| CN107501969A (en) * | 2017-10-10 | 2017-12-22 | 唐林元 | One kind foaming viscosity reduction type warm-mixing agent and preparation method thereof |
| 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 |
| 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 |
| 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 |
| 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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| US7833338B2 (en) * | 2004-02-18 | 2010-11-16 | Meadwestvaco Packaging Systems, Llc | Method for producing bitumen compositions |
| MX2010009223A (en) * | 2008-02-22 | 2010-09-28 | Alm Holding Company | Processing bituminous mixtures for paving at reduced temperatures. |
| WO2012160116A1 (en) * | 2011-05-25 | 2012-11-29 | Shell Internationale Research Maatschappij B.V. | Asphalt composition |
| CN102286205B (en) * | 2011-06-28 | 2013-08-14 | 中国海洋石油总公司 | Anionic emulsified asphalt and preparation method thereof |
| CN102408733B (en) * | 2011-09-30 | 2013-09-11 | 长安大学 | Warm mix asphalt viscosity breaking agent |
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