CN1800264A - High-performance Sasobit and SBR modified emulsified asphalt, and its preparation method and uses - Google Patents
High-performance Sasobit and SBR modified emulsified asphalt, and its preparation method and uses Download PDFInfo
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Abstract
The invention relates to a high-performance emulsified quenching asphalt and it's preparing method and usage. The high-performance SS emulsified quenching asphalt comprises: base material asphalt, emulsifying agent, modifier Sasobit and quenching agent SBR latex, wherein the adding ration of the emulsifying agent, modifier Sasobit and quenching agent SBR latex are separately 0.5-5%, 1-10% and 1-8%. The preparing method comprises: heating the base material asphalt to molten condition, adding the modifier Sasobit into it, adding the emulsifying agent into the water, heating it to 50-90 deg., using the formed quenching asphalt and soap solution to through the emulsion apparatus, at last adding 1-8% SBR latex into the formed quenching emulsion to stir it evenly.
Description
Technical field
This invention belongs to the asphalt modification and the emulsification processing technique field of road engineering, specifically introduces a kind of high-performance Sasobit and SBR modified emulsified asphalt and its production and use.
Background technology
Flourish along with the road construction cause, the motorway that China has been open to the traffic enters the maintenance phase in a large number.The maintenance work of asphalt pavement of highway has obtained concern more and more widely, be badly in need of research promotion economy, effectively, the preventive maintenance method being convenient to operate.Modified Slurry Sealing (little watch place) technology begins to apply in China as a kind of easy construction, the preventive maintenance measure fast, long service life of cheap, open to traffic.
Applying modified slurry seal (little table place) need carry out modification to emulsified bitumen or pitch.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, have the following disadvantages at present: (1) is because SBR mainly improves the bituminous low-temperature performance, usually improving not obvious to the bituminous high-temperature behavior under the dosage, the softening temperature of SBR modified emulsifying asphalt evaporation residue is lower, is difficult to satisfy little table place of the international slurry seal ISSA A143 of association regulation greater than 57 ℃; (2) homemade SBR latex is anionic, and poor with the cationic emulsified bitumen compatibility, pavement performance is bad; (3) Modified Slurry Sealing of using at present (little table place) exists serious bellding phenomenon or falls to expect phenomenon in China southern high-temperature area; (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, problems such as poor storage stability and actual pavement performance difference; (5) present modified emulsifying asphalt compound curing molding under low-temperature construction, the condition that carries on construction work at night is slow, the close traffic overlong time.Therefore be badly in need of providing a kind of pavement performance good the hgh-performance emulsified modified asphalt that the compound curing molding is fast under low-temperature construction, the condition that carries on construction work at night, the close traffic time is short at present.
Summary of the invention
One of purpose of the present invention just provides a kind of high-performance Sasobit and SBR modified emulsified asphalt that can overcome above-mentioned shortcoming.
Another object of the present invention provides the preparation method of this high-performance Sasobit and SBR modified emulsified asphalt.
A further object of the invention provides the purposes of above-mentioned this high-performance Sasobit and SBR modified emulsified asphalt.
High-performance Sasobit and SBR modified emulsified asphalt of the present invention, comprise matrix pitch, emulsifying agent, properties-correcting agent Sasobit and properties-correcting agent SBR latex, wherein said emulsifying agent, properties-correcting agent Sasobit and the add-on of properties-correcting agent SBR latex in matrix pitch, with the weight percent meter of matrix pitch, be respectively 0.5～5%, 1～10% and 1～8%.
Properties-correcting agent Sasobit of the present invention is that South Africa Sha Suo company (Sasol Wax (South Africa) is Ltd (Pty)) produces.The content of properties-correcting agent Sasobit accounts for 1～10% of matrix pitch weight, is preferably 1～5%.
Emulsifying agent of the present invention can be several in following: the QX-3 of INDULIN QTS, the INDULIN MQK-1M that U.S. MeadWestvaco company produces, INDULIN MQ3, TOT-3B that Changli, Hebei produces, Jiangsu seven-star production, CRS-1, the CRS-2 that Xinxiang Highway house produces or other split the fast type emulsifying agent that coagulates slowly.INDULIN QTS preferably.The content of emulsifying agent accounts for 0.5～5% of matrix pitch weight, is preferably 1.0～2.0%.
SBR latex of the present invention is the positively charged ion styrene-butadiene latex, the PC1468 that U.S. MeadWestvaco company produces, and the add-on of SBR latex in emulsion counts 1～8% with the weight percent of matrix pitch, is preferably 1～4%.
The preparation method of the high-performance Sasobit and SBR modified emulsified asphalt described in the present invention is as follows:
A, preparation Sasobit modifying asphalt: matrix pitch is heated to heat melts the properties-correcting agent Sasobit that adds above-mentioned content behind the state, Sasobit is dispersed in the pitch that heat melts;
The preparation of b, soap lye: the emulsifying agent of above-mentioned content is added to the water, and the aqueous solution that will contain emulsifying agent then is heated to 50～90 ℃, and the content of water is 30～50% of emulsified bitumen gross weight;
C, Sasobit modifying asphalt and the soap lye for preparing passed through emulsifying device;
D, before emulsion is used, the SBR latex that adds above-mentioned content in the modified emulsion that step c makes stirs and gets final product.
Said heat is melted state generally at 110 ℃～150 ℃ in the step 1.When passing through the emulsifying device of step 3, the modifying asphalt temperature T of step 1
1Temperature T with the soap lye of step 2
2Should satisfy: T
1+ T
2≤ 200 ℃.
Above-mentioned steps 3 described emulsifying devices are colloidal mill or homogenizer, and modifying asphalt and the soap lye weight percent during by emulsifying device is 50～70%: 50～30%.
Every technical indicator of this emulsified modified asphalt all is better than international slurry seal ISSA A105 of association or ISSA A143 requirement, so the prepared high-performance Sasobit and SBR modified emulsified asphalt of the present invention can be used as slurry seal or little table place.
Beneficial effect of the present invention: the modified emulsifying asphalt excellent road performance that high-performance Sasobit and SBR modified emulsified asphalt prescription that the present invention proposes and preparation method thereof is made, softening point test by evaporation residue, dynamic shearing rheology (DSR) test, low-temperature bending beam rheology (BBR) test draw: this emulsified modified asphalt can increase substantially softening temperature, has improved high-temperature behavior well and does not lose its low-temperature performance.Every technical indicator of this emulsified modified asphalt and compound thereof all satisfies international slurry seal ISSA A105 of association or ISSA A143 requirement.Modified Slurry Sealing commonly used (little table place) high temperature be can effectively solve and material, easy this technical problem of bellding easily fallen; While can effectively solve present Modified Slurry Sealing (little watch place) low-temperature construction, the technical barrier that the compound curing molding is slow, the close traffic time is long carries on construction work at night.This modified emulsifying asphalt has good application prospects.
Embodiment
Embodiment 1
Matrix pitch shell90# is heated to heat melts state, add then and count 2.0% Sasobit properties-correcting agent with matrix pitch weight, stirred and make it evenly mixed.
The Xiang Shuizhong adding is counted 1.6% emulsifying agent INDULIN QTS with the weight of matrix pitch, and adds hydrochloric acid adjusting emulsifier solution (soap lye) acid number, makes about PH=2, stirs, and is warming up to 50～90 ℃.
The emulsifier aqueous solution (soap lye) of 125 ℃ of Sasobit modifying asphalts of above-mentioned preparation and 60 ℃ is got final product by colloidal mill with weight percent 62%: 38%.Before emulsion was used, the SBR latex of adding 3.0% stirred and can obtain being used for the hgh-performance emulsified modified asphalt at Modified Slurry Sealing or little table place in above-mentioned modified emulsion.Its performance sees Table 1.
Embodiment 2
Matrix pitch shell90# is heated to 110～150 ℃, adds then and count 1.0% Sasobit properties-correcting agent with matrix pitch weight, stirred and make it evenly mixed.
The Xiang Shuizhong adding is counted 0.5% emulsifying agent INDULIN QTS with the weight of matrix pitch, and adds hydrochloric acid adjusting emulsifier solution (soap lye) acid number, makes about PH=2, stirs, and is warming up to 50～90 ℃.
The emulsifier aqueous solution (soap lye) of 110～150 ℃ of Sasobit modifying asphalts of above-mentioned preparation and 50～90 ℃ is got final product by colloidal mill with weight percent 70%: 30%.Before emulsion was used, the SBR latex of adding 4.0% stirred and can obtain being used for the hgh-performance emulsified modified asphalt at Modified Slurry Sealing or little table place in above-mentioned modified emulsion.Its performance sees Table 1.
Embodiment 3
Matrix pitch shell90# is heated to 110～150 ℃, adds then and count 5.0% Sasobit properties-correcting agent with matrix pitch weight, stirred and make it evenly mixed.
The Xiang Shuizhong adding is counted 2.0% emulsifying agent QX-3 (production of Jiangsu seven-star) with the weight of matrix pitch, and adds hydrochloric acid adjusting emulsifier solution (soap lye) acid number, makes about PH=2, stirs, and is warming up to 50～90 ℃.
The emulsifier aqueous solution (soap lye) of 110～150 ℃ of Sasobit modifying asphalts of above-mentioned preparation and 50～90 ℃ is got final product by colloidal mill with weight percent 60%: 40%.Before emulsion was used, the SBR latex of adding 1.0% stirred and can obtain being used for the hgh-performance emulsified modified asphalt at Modified Slurry Sealing or little table place in above-mentioned modified emulsion.Its performance sees Table 1.
Embodiment 4
Matrix pitch shell90# is heated to 110～150 ℃, adds then and count 10% Sasobit properties-correcting agent with matrix pitch weight, stirred and make it evenly mixed.
The Xiang Shuizhong adding is counted 5% emulsifying agent INDULIN QTS with the weight of matrix pitch, and adds hydrochloric acid adjusting emulsifier solution (soap lye) acid number, makes about PH=2, stirs, and is warming up to 50～90 ℃.
The emulsifier aqueous solution (soap lye) of 110～150 ℃ Sasobit modifying asphalt of above-mentioned preparation and 50～90 ℃ is got final product by colloidal mill with weight percent 50%: 50%.Before emulsion was used, the SBR latex of adding 8.0% stirred and can obtain being used for the hgh-performance emulsified modified asphalt at Modified Slurry Sealing or little table place in above-mentioned modified emulsion.Its performance sees Table 1.
Comparative Examples 1
Matrix pitch shell90# is heated to 110～150 ℃, adds then and count 2.0% Sasobit properties-correcting agent with the matrix pitch quality, stirred and make it evenly mixed.
The Xiang Shuizhong adding is counted 1.6% emulsifying agent INDULIN QTS 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 50～90 ℃.
The emulsifier aqueous solution (soap lye) of 125 ℃ of Sasobit modifying asphalts of above-mentioned preparation and 60 ℃ is got final product by colloidal mill with mass percent 62%: 38%.Its performance sees Table 1.
Comparative Examples 2
Matrix pitch shell90# is heated to 125 ℃.
The Xiang Shuizhong adding is counted 1.6% emulsifying agent INDULIN QTS 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 50～90 ℃.
The emulsifier aqueous solution (soap lye) of above-mentioned 125 ℃ of pitches and 60 ℃ is got final product by colloidal mill with mass percent 62%: 38%.
Before emulsion was used, stir got final product the SBR latex of adding 3.0% in above-mentioned modified emulsion (PC1468 that U.S. MeadWestvaco company produces).Its performance sees Table 1.
Comparative Examples 3
Matrix pitch shell90# is heated to 125 ℃.
The Xiang Shuizhong adding is counted 1.6% emulsifying agent INDULIN QTS 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 50～90 ℃.
The emulsifier aqueous solution (soap lye) of above-mentioned 125 ℃ of pitches and 60 ℃ is got final product by colloidal mill with mass percent 62%: 38%.Its performance sees Table 1.
* table 1
| Project | Embodiment 1 | Embodiment 2 | Embodiment 3 | Embodiment 4 | Comparative Examples 1 | Comparative Examples 2 | Comparative Examples 3 | |
| Sasobit, % (accounting for the matrix pitch quality) | 2.0 | 1.0 | 5.0 | 10 | 2.0 | 0 | 0 | |
| The SBR emulsion, % (accounting for the matrix pitch quality) | 3.0 | 4.0 | 1.0 | 8.0 | 0 | 3.0 | 0 | |
| Evaporation residue penetration degree, 0.1mm@25 ℃ | 56.3 | 60 | 49.8 | 41.5 | 70 | 72 | 88 | |
| The evaporation residue softening temperature, ℃ | 67.5 | 62.5 | 89 | 98 | 56 | 52 | 46.5 | |
| Evaporation residue BBR index test temperature :-12 ℃ | S， Mpa | 117.5 | 116 | 176 | 265 | 136.5 | 70.5 | 83 |
| m | 0.449 | 0.409 | 0.342 | 0.306 | 0.392 | 0.476 | 0.45 | |
| Evaporation residue DSR index G*/sin δ, Pa | 64℃ | 3181.7 | 2982.3 | 5068.5 | 5659.7 | 2601.6 | 2293.5 | 1025.4 |
| 70℃ | 1947.6 | 1540.2 | 2601.3 | 2965.4 | 1331.6 | 1078.6 | 695.9 | |
| * cohesive force (outdoor: 16～18 ℃, fine), kg.cm | 30min： 15 60min： 23 | 30min： 12 60min： 20 | 30min： 16 60min： 23 | 30min： 17 60min： 23 | 30min： 17 60min： 23 | 30min： 8 60minl 17 | 30min： 9 60min： 18 | |
* embodiment 1, embodiment 2, embodiment 3, embodiment 4, other every indexs of Comparative Examples 1, Comparative Examples 2, Comparative Examples 3 emulsions and test mixture thereof all satisfy the requirement of ISSA A105.
Used gathering materials of * is Shandong basalt, and the salt acid activity is 4, and the sand equivalent is 65, and grating meets the requirement of ISSA A143II type aggregate grading.
Testing method: 1, evaporation residue penetration degree, 0.1mm@25 ℃: ASTM 2397, Chinese T 0604-2000
2, evaporation residue softening temperature, ℃: ASTM D36, Chinese T 0606-2000
3, evaporation residue BBR index S, Mpa, m:AASHTO:TP1-98
4, evaporation residue DSR index G*/sin δ, Pa:AASHTO TP5-93
5, cohesive force (outdoor: 16～18 ℃, fine), kg.cm:ISSA TB-139, Chinese T 0754-2000
As can be seen from Table 1:
The softening temperature of embodiment 1,2,3,4 and DSR index all are better than Comparative Examples 1,2,3, and the softening temperature of embodiment 1,2,3,4 satisfies the requirement of ISSA A143 as little table place all greater than 57 ℃.Illustrate that modified emulsifying asphalt of the present invention has excellent high.
-12 ℃ of BBR indexs of embodiment 1,2,3,4 all satisfy SHRP standard AASHTO MP1:S＜300Mpa, m＞0.3, and embodiments of the invention are described, and not only high-temperature behavior is good, and low-temperature performance is also better.
The compound of embodiment 1,2,3,4 intensity under low temperature environment rises very fast.The modified emulsifying asphalt that the embodiment of the invention 1,2,3,4 is described simultaneously can be applied to carry on construction work at night or the low-temperature construction system preferably.
To sum up, as can be seen from Table 1: the emulsified modified asphalt of embodiment 1,2,3,4 can satisfy high-temperature behavior good (ISSAA143 regulation softening temperature＞57 ℃) simultaneously, good (the SHRP standard AASHTO MP1:S＜300Mpa of low-temperature performance, m＞0.3), and the advantage of intensity rising fast (cohesive force of ISSA A143 regulation 30min is greater than 12kg.cm, and 60min is greater than 20kg.cm) under the low temperature.
Claims (10)
1, a kind of SS emulsified modified asphalt, comprise matrix pitch, emulsifying agent, properties-correcting agent Sasobit and properties-correcting agent SBR latex, wherein said emulsifying agent, properties-correcting agent Sasobit and the add-on of properties-correcting agent SBR latex in matrix pitch, with the weight percent meter of matrix pitch, be respectively 0.5～5%, 1～10% and 1～8%.
2, SS emulsified modified asphalt as claimed in claim 1 is characterized in that the add-on of emulsifying agent in matrix pitch accounts for 1.0～2.0% of matrix pitch weight.
3, SS emulsified modified asphalt as claimed in claim 2 is characterized in that emulsifying agent is a kind of in following: INDULIN QTS, INDULIN MQK-1M, INDULIN MQ3, TOT-3B, QX-3, CRS-1 or CRS-2.
4, SS emulsified modified asphalt as claimed in claim 3 is characterized in that emulsifying agent is INDULIN QTS.
5, SS emulsified modified asphalt as claimed in claim 1 is characterized in that the add-on of properties-correcting agent Sasobit in matrix pitch accounts for 1～5% of matrix pitch weight.
6, SS emulsified modified asphalt as claimed in claim 1 is characterized in that the add-on of properties-correcting agent SBR latex in matrix pitch accounts for 1～4% of matrix pitch weight.
7, the preparation method of the described SS emulsified modified asphalt of claim 1～6, this method steps is as follows:
A, preparation Sasobit modifying asphalt: matrix pitch is heated to heat melts the properties-correcting agent Sasobit that adds above-mentioned content behind the state, it is dispersed in the pitch that heat melts;
The preparation of b, soap lye: the emulsifying agent of above-mentioned content is added to the water, and the aqueous solution that will contain emulsifying agent then is heated to 50～90 ℃, and the content of water is 30～50% of emulsified bitumen gross weight;
C, Sasobit modifying asphalt and the soap lye for preparing passed through emulsifying device;
D, before emulsion is used, the SBR latex that adds above-mentioned content in the modified emulsion that step c makes stirs and gets final product.
8, the preparation method of SS emulsified modified asphalt as claimed in claim 7, the weight percent when it is characterized in that modifying asphalt and soap lye by emulsifying device is 50～70%: 50～30%.
9, the preparation method of SS emulsified modified asphalt as claimed in claim 7 is characterized in that said emulsifying device is colloidal mill or homogenizer.
10, the described SS emulsified modified asphalt of claim 1～6 is as slurry seal or little table place.
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| CN100362053C (en) * | 2006-06-29 | 2008-01-16 | 重庆大学 | Stone chip layer sealing composite modified emulsified asphalt and its preparation method |
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| CN103242664A (en) * | 2013-05-09 | 2013-08-14 | 广州大学 | Styrene butadiene rubber (SBR) composite modified emulsified asphalt suitable for cold-mix material, and preparation method thereof |
| CN103352408A (en) * | 2013-07-09 | 2013-10-16 | 杨林江 | Modified emulsified asphalt slurry seal mixture and preparation method thereof |
| CN104804443A (en) * | 2015-04-28 | 2015-07-29 | 上海路惠环保科技有限公司 | Emulsified asphalt and preparation method and application thereof |
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| US6894092B2 (en) * | 2001-06-05 | 2005-05-17 | Ram Technologies Group, Inc. | Aqueous asphalt emulsions containing liquefied or devulcanized recycled rubber |
| WO2001018122A1 (en) * | 1999-09-03 | 2001-03-15 | J.S.G. Enterprises, Inc. | Polymer-modified asphalt emulsion |
| NZ524360A (en) * | 2000-08-25 | 2004-08-27 | Bp Oil Int | Use of a bitumen/wax composition |
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| CN103242664A (en) * | 2013-05-09 | 2013-08-14 | 广州大学 | Styrene butadiene rubber (SBR) composite modified emulsified asphalt suitable for cold-mix material, and preparation method thereof |
| CN103352408A (en) * | 2013-07-09 | 2013-10-16 | 杨林江 | Modified emulsified asphalt slurry seal mixture and preparation method thereof |
| CN104804443A (en) * | 2015-04-28 | 2015-07-29 | 上海路惠环保科技有限公司 | Emulsified asphalt and preparation method and application thereof |
| CN109722046A (en) * | 2018-12-29 | 2019-05-07 | 徐州道润公路工程有限公司 | A kind of color emulsified asphalt and preparation method thereof and colored micro-surface area |
| CN111909313A (en) * | 2020-08-17 | 2020-11-10 | 山东京博中聚新材料有限公司 | In-situ enhanced styrene-butadiene latex as well as preparation method and application thereof |
| CN113176177A (en) * | 2021-04-14 | 2021-07-27 | 武汉理工大学 | Optimized method of emulsified asphalt for cold-mix asphalt mixture based on rheological property |
| CN113176177B (en) * | 2021-04-14 | 2024-05-31 | 武汉理工大学 | Optimized method for emulsified asphalt for cold-mix asphalt mixture based on rheological property |
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| CN100457830C (en) | 2009-02-04 |
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