CN100410328C - Hgh-performance emulsified modified asphalt, and its preparation method and uses - Google Patents
Hgh-performance emulsified modified asphalt, and its preparation method and uses Download PDFInfo
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- CN100410328C CN100410328C CNB200510023112XA CN200510023112A CN100410328C CN 100410328 C CN100410328 C CN 100410328C CN B200510023112X A CNB200510023112X A CN B200510023112XA CN 200510023112 A CN200510023112 A CN 200510023112A CN 100410328 C CN100410328 C CN 100410328C
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Abstract
The present invention belongs to the fields of high-performance emulsified modified asphalt, a preparation method thereof and the application thereof. The high-performance emulsified modified asphalt of the present invention comprises asphalt base materials, emulsifying agents and modifying agents Sasobit, wherein the addition quantity of the emulsifying agents and the modifying agents in the asphalt base materials is respectively 0.1 to 5% and 1 to 10% as measured by the weight percentage of the asphalt. The preparation method comprises the following steps: heating the asphalt base materials to thermal melting state and then adding the modifying agents Sasobit with the content of 1 to 10%; adding the emulsifying agents of the content of 0.1 to 5% to water of which the content is from 25 to 50% of the total weight of a soap solution and the modified asphalt; putting the prepared modified asphalt and the soap solution into an emulsifying device. The high-performance emulsified modified asphalt provided by the present invention is used for chip sealing layers or adhesive layer oil, and has the advantages of favorable performance for roads and easy preparation and production; all technical indices of the present invention are obviously superior to those of ordinary emulsified asphalt.
Description
Technical field
This invention belongs to road engineering emulsified modified asphalt and processing and purposes technical field, specifically introduces a kind of hgh-performance emulsified modified asphalt prescription that is used for screening seal coat or sticking layer oil and preparation method thereof.
Background technology
At present in the road construction generally as the emulsified bitumen of sticking layer oil and screening seal coat mostly be fast (in) split the common emulsified asphalt of type.Yet common emulsified asphalt often is difficult to satisfy actual traffic and weather condition, and its pavement performance is relatively poor.When common emulsified bitumen was used as sticking layer oil, often owing to viscosity behind its breakdown of emulsion is lower, bond effect was bad sometimes.Also do sticking layer oil in the engineering that has, but owing to face (base) the layer temperature of being spilt cloth is lower, SBS spills layer of cloth and face (base) layer adhesivity is also not so good, and price is higher with the SBS modifying asphalt that spills cloth heat.When common emulsified asphalt was used for screening seal coat, seal intensity was lower, and surface deformation is serious.Therefore, the pavement performance that improve emulsified bitumen often needs emulsified bitumen or pitch are carried out modification.Properties-correcting agent is the important component part of modifying asphalt, is that modified emulsifying asphalt is different from one of main characteristics of common emulsified asphalt.The adding of properties-correcting agent can improve the high and low temperature performance of emulsified bitumen.The kind of properties-correcting agent and content have determined the pavement performance of emulsified bitumen to a great extent.Because emulsified bitumen is liquid state at normal temperatures, considers processing factors, the general glue lactous properties-correcting agent that adopt more.Latex shape properties-correcting agent commonly used has SBR latex, natural rubber latex.Another kind method is by modifying asphalt emulsive method is made modified emulsifying asphalt, except emulsification SBR modifying asphalt, and the application there be limited evidence currently of of other modifying asphalts of emulsification.Application with regard to modified emulsifying asphalt has the following disadvantages at present: (1) SBR latex mainly improves the bituminous low-temperature performance, and it is not clearly that the bituminous high-temperature behavior is improved; (2) present homemade SBR latex is anionic, and the compatibleness of negatively charged ion SBR latex and widely used cationic emulsified bitumen and building stones is poor, and pavement performance is bad; (3) the import kation S BR latex price of using in the present engineering is higher; (4) for the high-temperature behavior that improves modified emulsifying asphalt to the SBS modifying asphalt carry out that emulsification exists usually that emulsification difficulty, emulsion particle are thick partially, problem such as poor storage stability, actual pavement performance are bad.Therefore, be badly in need of providing a kind of pavement performance good, can obviously improve interlaminar bonding power during as sticking layer oil, can obviously improve the modified emulsifying asphalt of seal intensity and non-deformability thereof when being used for screening seal coat.
Summary of the invention
One of purpose of the present invention is exactly to propose a kind of emulsified modified asphalt that overcomes above-mentioned shortcoming;
Another object of the present invention is to propose the preparation method of above-mentioned emulsified modified asphalt;
A further object of the invention is to propose the purposes of above-mentioned emulsified modified asphalt.
Emulsified modified asphalt of the present invention comprises matrix pitch, emulsifying agent and properties-correcting agent Sasobit, and wherein emulsifying agent and the properties-correcting agent add-on in matrix pitch based on the weight percent meter of matrix pitch, is respectively 0.1～5% and 1～10%.
Said properties-correcting agent Sasobit is that South Africa Sha Suo company (Sasol Wax (South Africa) is Ltd (Pty)) produces among the present invention, and its content accounts for 1～10% of matrix pitch weight, is preferably 3～5%.
Said emulsifying agent is INDULIN DF62, the INDULINDF42 etc. that U.S. MeadWestvaco company produces among the present invention, is preferably INDULIN DF42, and its content accounts for 0.1～5% of matrix pitch weight, is preferably 0.2～0.3%.
The preparation method of said emulsified modified asphalt is as follows among the present invention:
A, preparation Sasobit modifying asphalt: matrix pitch is heated to heat melts state, add the properties-correcting agent Sasobit of above-mentioned content then, Sasobit is dispersed in the pitch that heat melts;
B, preparation soap lye: the emulsifying agent of above-mentioned content is added to the water, is heated to 45～90 ℃, wherein the content of water is 25～50% of soap lye and modifying asphalt gross weight;
C, above-mentioned modifying asphalt for preparing and soap lye are passed through emulsifying device.
Said heat is melted state generally at 110 ℃～155 ℃ in the step 1, when passing through the emulsifying device of step 3, and the modifying asphalt temperature T of step 1
1Temperature T with step 2 soap lye
2Should satisfy: T
1+ T
2≤ 200 ℃.
Sasobit modifying asphalt described in the step 3 and soap lye are with weight percent 50%～75%: 50%～25% by emulsifying device, and said emulsifying device refers to colloidal mill, homogenizer etc.
The prepared emulsified modified asphalt of the present invention is used as sticking layer oil or screening seal coat.
Beneficial effect of the present invention: emulsified modified asphalt excellent road performance provided by the invention, every technical indicator all obviously is better than common emulsified bitumen, solved that sticking layer oil bond effect commonly used is bad, the technical problem of the easy bellding of screening seal coat and intensity low (especially hot strength is low), can obviously improve interlaminar bonding power during as sticking layer oil, can obviously improve the ability of seal intensity and resistance to deformation thereof when being used for screening seal coat, have good application prospects.This emulsified modified asphalt is very easily prepared and is produced, and its emulsifying process is the same with common matrix pitch, and emulsifying effectiveness is fabulous.
Embodiment
Further specify the present invention below in conjunction with the modified emulsifying asphalt production example, rather than limit the scope of the invention.
Embodiment 1
Shell70# pitch is heated to 110～155 ℃, makes it to be heat and melt state, add then and count 5% Sasobit properties-correcting agent with the weight of matrix pitch, stirred and make it evenly mixed.
The Xiang Shuizhong adding is counted 0.3% emulsifying agent INDULIN DF42 with the weight of matrix pitch, and adds hydrochloric acid adjusting emulsifier solution acid number, makes about PH=2, stirs, and is warming up to 45～90 ℃.
The Sasobit modifying asphalt of above-mentioned preparation and emulsifier aqueous solution (soap lye) are got final product by colloidal mill with weight percent 60%: 40%.Its performance sees Table 1.
Embodiment 2
Shell70# pitch is heated to 110～155 ℃, makes it to be heat and melt state, add then and count 3% Sasobit properties-correcting agent with the weight of matrix pitch, stirred and make it evenly mixed.
The Xiang Shuizhong adding is counted 0.2% emulsifying agent INDULIN DF42 with the weight of matrix pitch, and adds hydrochloric acid adjusting emulsifier solution acid number, makes about PH=2, stirs, and is warming up to 45～90 ℃.
The Sasobit modifying asphalt of above-mentioned preparation and emulsifier aqueous solution (soap lye) are got final product by colloidal mill with weight percent 60%: 40%.Its performance sees Table 1.
Embodiment 3
Shell70# pitch is heated to 110～155 ℃, makes it to be heat and melt state, add then and count 10% Sasobit properties-correcting agent with the weight of matrix pitch, stirred and make it evenly mixed.
The Xiang Shuizhong adding is counted 5% emulsifying agent INDULIN DF42 with the quality of matrix pitch, and adds hydrochloric acid adjusting emulsifier solution acid number, makes about PH=2, stirs, and is warming up to 45～90 ℃.
The Sasobit modifying asphalt of above-mentioned preparation and emulsifier aqueous solution (soap lye) are got final product by colloidal mill with mass percent 75%: 25%.Its performance sees Table 1.
Embodiment 4
Shell70# pitch is heated to 110～155 ℃, makes it to be heat and melt state, add then and count 1% Sasobit properties-correcting agent with the quality of matrix pitch, stirred and make it evenly mixed.
The Xiang Shuizhong adding is counted 0.1% emulsifying agent INDULIN DF42 with the quality of matrix pitch, and adds hydrochloric acid adjusting emulsifier solution acid number, makes about PH=2, stirs, and is warming up to 45～90 ℃.
The Sasobit modifying asphalt of above-mentioned preparation and emulsifier aqueous solution (soap lye) are got final product by colloidal mill with mass percent 50%: 50%.Its performance sees Table 1.
Comparative Examples 1
Shell70# pitch is heated to 110～155 ℃, makes it to be heat and melt state.
The Xiang Shuizhong adding is counted 0.2% emulsifying agent INDULIN DF42 with the quality of matrix pitch, and adds hydrochloric acid adjusting emulsifier solution acid number, makes about PH=2, stirs, and is warming up to 45～90 ℃.
Above-mentioned pitch and emulsifier aqueous solution (soap lye) are got final product by colloidal mill with mass percent 60%: 40%.Its performance sees Table 1.
Table 1
Testing method: 1, evaporation residue softening temperature, ℃: ASTM D36, Chinese T 0606-2000
2, evaporation residue BBR index S, Mpa, m:AASHTO:TP1-98
3, evaporation residue DSR index G*/sin δ, Pa:AASHTO TP5-93
4, evaporation residue viscosities il, pa.s:AASHTO TP5-93
5, adhesivity wraps area (%): T0654-1993
As can be seen from Table 1:
This emulsified modified asphalt evaporation residue is compared with corresponding common emulsified asphalt evaporation residue (Comparative Examples 1), can increase softening temperature and reach more than 40 ℃; By DSR and BBR index as can be seen, embodiment 1, embodiment 2, embodiment 3 and embodiment 4 have improved high-temperature behavior and its low-temperature performance is good, but the comprehensive better effects if of improving of embodiment 1 and 2 pairs of high and low temperature performances of embodiment.
The evaporation residue viscosities il of embodiment 1, embodiment 2, embodiment 3 and embodiment 4 also has the high-temperature denatured ability of resisting preferably apparently higher than Comparative Examples 1 even this emulsified modified asphalt is described under comparatively high temps.
The modified emulsifying asphalt of embodiment 1, embodiment 2, embodiment 3 and embodiment 4 and the adhesivity of mineral aggregate obviously are better than Comparative Examples 1, illustrate that this emulsified modified asphalt has good adhesive force.
Claims (8)
1. emulsified modified asphalt, comprise matrix pitch, emulsifying agent and properties-correcting agent Sasobit, wherein emulsifying agent is INDULINDF62 or INDULIN DF42, emulsifying agent and the properties-correcting agent add-on in matrix pitch, based on the weight percent meter of matrix pitch, be respectively 0.1～5% and 1～10%.
2. emulsified modified asphalt as claimed in claim 1 is characterized in that the add-on of emulsifying agent in matrix pitch is 0.2～0.3% of matrix pitch weight.
3. emulsified modified asphalt as claimed in claim 1 is characterized in that the add-on of properties-correcting agent Sasobit in matrix pitch is 3～5% of matrix pitch weight.
4. the preparation method of emulsified modified asphalt as claimed in claim 1, its step is as follows:
A, preparation Sasobit modifying asphalt: matrix pitch is heated to heat melts state, add weight percent based on matrix pitch then and be 1～10% properties-correcting agent Sasobit, and it is dispersed in the pitch that heat melts;
B, preparation soap lye: will be that 0.1～5% emulsifying agent is added to the water based on the weight percent of matrix pitch, and be heated to 45～90 ℃, wherein the content of water be 25～50% of soap lye and modifying asphalt gross weight;
C, above-mentioned modifying asphalt for preparing and soap lye are obtained emulsified modified asphalt by emulsifying device.
5. the preparation method of emulsified modified asphalt as claimed in claim 4, wherein among the step a, the add-on of properties-correcting agent Sasobit in matrix pitch is 3～5% of matrix pitch weight, and among the step b, the add-on of emulsifying agent is 0.2～0.3% of a matrix pitch weight.
6. as the preparation method of claim 4 or 5 described emulsified modified asphalts, it is characterized in that Sasobit modifying asphalt and soap lye are with weight percent 50%～75%: 50%～25% passes through emulsifying device.
7. as the preparation method of claim 4 or 5 described emulsified modified asphalts, it is characterized in that said emulsifying device is colloidal mill or homogenizer.
8. the purposes of the described emulsified modified asphalt of claim 1 is characterized in that as screening seal coat or sticking layer oil.
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| CNB200510023112XA CN100410328C (en) | 2005-01-04 | 2005-01-04 | Hgh-performance emulsified modified asphalt, and its preparation method and uses |
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| CNB200510023112XA CN100410328C (en) | 2005-01-04 | 2005-01-04 | Hgh-performance emulsified modified asphalt, and its preparation method and uses |
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| CN100410328C true CN100410328C (en) | 2008-08-13 |
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Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100362053C (en) * | 2006-06-29 | 2008-01-16 | 重庆大学 | Stone chip layer sealing composite modified emulsified asphalt and its preparation method |
| CN101200595B (en) * | 2006-12-12 | 2012-03-07 | 中国石油天然气股份有限公司 | Modified emulsified asphalt |
| CN106832974A (en) * | 2017-02-23 | 2017-06-13 | 武汉工程大学 | A kind of emulsified bituminous materials of high solids content and preparation method thereof |
| CN110283467A (en) * | 2019-07-18 | 2019-09-27 | 湖南鑫长胜材料科技有限公司 | A kind of adhesion coating modified emulsifying asphalt and preparation method |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20020183401A1 (en) * | 2001-03-20 | 2002-12-05 | Wates Julia Mary | Polybetaines as asphalt emulsifiers |
| US20030018106A1 (en) * | 2001-06-05 | 2003-01-23 | Ram Technologies Group, Inc. | Aqueous asphalt emulsions containing liquefied or devulcanized recycled rubber |
| CN1441033A (en) * | 2002-12-31 | 2003-09-10 | 杨林江 | Emulsified modified asphalt and preparation method thereof |
| CN1449430A (en) * | 2000-08-25 | 2003-10-15 | 英国石油国际有限公司 | Use of a bitumen/wax composition |
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Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1449430A (en) * | 2000-08-25 | 2003-10-15 | 英国石油国际有限公司 | Use of a bitumen/wax composition |
| US20020183401A1 (en) * | 2001-03-20 | 2002-12-05 | Wates Julia Mary | Polybetaines as asphalt emulsifiers |
| US20030018106A1 (en) * | 2001-06-05 | 2003-01-23 | Ram Technologies Group, Inc. | Aqueous asphalt emulsions containing liquefied or devulcanized recycled rubber |
| CN1441033A (en) * | 2002-12-31 | 2003-09-10 | 杨林江 | Emulsified modified asphalt and preparation method thereof |
Non-Patent Citations (3)
| Title |
|---|
| Sasobit改性剂对立清改性的室内实验分析. 李中秋.公路交通科技，第21卷第10期. 2001 * |
| 掺加Sasobit改性沥青的试验及评价. 谢寿华.中外公路，第23卷第5期. 2003 * |
| 沥青乳化剂产品说明书. 美德维什伟克公司.. 2003 * |
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