CN103305015A - Warm-mixing high-elastoplasticity bridge expansion joint sealing material and preparation method thereof - Google Patents
Warm-mixing high-elastoplasticity bridge expansion joint sealing material and preparation method thereof Download PDFInfo
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- CN103305015A CN103305015A CN2013102093769A CN201310209376A CN103305015A CN 103305015 A CN103305015 A CN 103305015A CN 2013102093769 A CN2013102093769 A CN 2013102093769A CN 201310209376 A CN201310209376 A CN 201310209376A CN 103305015 A CN103305015 A CN 103305015A
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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 a warm-mixing high-elastoplasticity bridge expansion joint sealing material and a preparation method thereof. The warm-mixing high-elastoplasticity bridge expansion joint sealing material comprises the following components: petroleum asphalt: SBS (Styrene-Butadiene Block Polymer):SBR (Styrene Butadiene Rubber):resin: stabilizing agents: warm-mixing agents=100:(3-10):(1-5):(0-10):(2-6):(1-5), wherein the resin is petroleum resin or abietic resin; and the stabilizing agents are mixtures of sulphur and TOR (trans-polyoctenamer rubber) stabilizing agents, and the proportion of the sulphur to TOR is 4: (1-2). The joint sealing material obtained through a formula has the characteristics of being a warm-mixing type modified asphalt material which has stability at high temperature, cracking resistance at low temperature, good bonding capacity and very good elastic recovery capacity.
Description
Technical field
The invention belongs to material of construction, relate to a kind of temperature and mix the type high elasticity modified asphalt, be mainly used in the elasticity of pitch and the construction temperature of reduction pitch, be applicable to the bridge expanssion joint seam sealer of bridge gapless.
Background technology
The temperature technology of mixing is by adding certain additive or adopt special technology so that the mix degree of asking of pitch reduces in pitch.Warm-mixed asphalt is compared with traditional asphalt, and construction temperature can descend 30 ~ 60 ℃.The reduction of bitumen construction temperature not only can reduce the energy consumption when producing, and reduces the quantity discharged of the waste gas such as carbonic acid gas, flue dust, effectively protects surrounding environment, can also protect the healthy of workmen, prolongs the work-ing life of construction equipment.
The expansion joint is between adjacent beams and the retractor device that arranges between beam-ends and the abutment parados, and its Main Function is to ensure that the bridge structure thing can free deformation under the effects such as temperature, humidity, load, for Vehicle Driving Cycle provides smooth-going, comfortable surface.The science design at expansion joint, well construction and in time maintenance are safe, quick, the comfortable bases that guarantees transport by road, also directly affect the work-ing life of bridge structure simultaneously.The gapless retractor device can satisfy the flexible requirement of bridge by inserting highly elastic material, has again good road-ability simultaneously, is used widely in recent years.But, pointing requires to have good elasticity, between energy and bridge good viscosifying power is arranged simultaneously, in recent years, occurred many elastoplasticity bridge expanssion joint pointings both at home and abroad, still, have two problems: 1. the elasticity of material does not reach requirement, be difficult to and the bridge compatible deformation, thereby cause the crack disease of retractor device; 2. high temperature construction is generally more than 200 ℃, high to construction requirement.
Summary of the invention
The object of the invention is to overcome plain asphalt and be difficult to satisfy the requirements such as the snappiness of bridge expanssion joint and high-temperature stability, therefore it is carried out modification.Temperature provided by the invention is mixed high elasticity modified asphalt of type and preparation method thereof, and is low than the traditional asphalt construction temperature, improved simultaneously high-temperature stability, low-temperature cracking-resistance, ageing resistance and the elastic recovery capability of pitch.
Formula technique scheme disclosed by the invention:
A kind of temperature is mixed type high elasticity modified asphalt prescription, it is characterized in that, comprises following composition:
(1) petroleum pitch is major ingredient.
(2) vinylbenzene-butadiene block polymkeric substance (SBS), be properties-correcting agent, be used for improving these three kinds of pavement performances of elasticity, high-temperature stability and crack resistance at low-temperature of pitch, but the too high easy segregation of volume, the viscosifying power of simultaneously all right strongthener is conducive to the interface bonding between material and decking.
(3) styrene-butadiene rubber(SBR) (SBR) is properties-correcting agent.
(4) resin is properties-correcting agent, selects petroleum resin or Gum Rosin, mainly is high-temperature stability and the rutting resistance of strongthener.
(5) stablizer is sulphur and TOR rubber stabilizer mixture, wherein sulphur: TOR=4:1-2 in mass ratio.Stablizer can effectively subtract the segregation of polymkeric substance, and sulphur is generally used for preventing the segregation of SBS polymkeric substance, and TOR is a kind of rubber stabilizer, is mainly used in guaranteeing that SBR's is stable.
(6) warm-mixing agent is organic viscosity-depression agent.Above five kinds of components are mixed can obtain high viscoelastic material, but construction temperature more than 190 ℃, therefore, in the prescription also design added warm-mixing agent, thereby construction temperature is reduced to 135 ~ 150 ℃, can the use so that product is directly constructed.
Above-mentioned complete petroleum pitch prescription, according to massfraction, vinylbenzene-butadiene block polymkeric substance (SBS): styrene-butadiene rubber(SBR) (SBR): resin: stablizer: the mass ratio of warm-mixing agent is: 100:3-10:1-5:0-10:2-6:1-5.
Based on above-mentioned prescription, preparation method's technical scheme of the present invention is:
A kind of temperature is mixed the preparation method of type high elasticity modified asphalt, it is characterized in that, step is as follows:
1, raw material is prepared:
Proportioning according to various materials takes by weighing consumption, according to massfraction, and petroleum pitch: vinylbenzene-butadiene block polymkeric substance (SBS): styrene-butadiene rubber(SBR) (SBR): resin: stablizer: warm-mixing agent=100:3-10:1-5:0-10:2-6:1-5.Described resin is petroleum resin or Gum Rosin.Described stablizer is sulphur and TOR rubber stabilizer mixture, and ratio is: sulphur: TOR=4:1-2.
2, pitch is put into 120 ℃ of insulations 1 hour, treated that pitch is liquid state.
3, adopt heating by electric cooker, design temperature is 175 ~ 180 ℃, the vinylbenzene that weighs up-butadiene block polymkeric substance (SBS) is added in the pitch, adopt high-speed shearing machine to carry out high speed shear, rotating speed is 1500 ~ 3000r/min, shear time is 30 ~ 45min, adds SBR again and carries out high speed shear 30 ~ 60min, adds resin and TOR rubber stabilizer and shears 20 ~ 30min.
4, warm-mixing agent is added in the said mixture, stir 60min under 175 ~ 180 ℃ of conditions, add the sulphur stablizer, stir 60 ~ 90min, so that asphalt mixing is even, bitumen construction mix temperature is 135 ~ 150 ℃, thus, can be directly used in construction.
The pitch that the present invention obtains satisfies the cementing material for bridge expansion joint requirement, and softening point temperature has good high temperature rutting resistance up to 100 ℃; 5 ℃ of ductilities can reach 31.9cm, and the illustrative material low-temperature performance is good than plain asphalt; 25 degrees centigrade of elastic restoration ratios can reach 95%, and illustrative material just has good elasticity.After adding warm-mixing agent, the viscosity of pitch effectively reduces, and the elastoplasticity pitch that the mix temperature is more traditional descends about 30 ℃.
Embodiment
In order to understand better the present invention, further illustrate content of the present invention below in conjunction with embodiment, but content of the present invention is not
Only be confined to the following examples.
Embodiment 1
A kind of temperature is mixed the type high elasticity modified asphalt, comprises following composition:
70# bi tumenf orr oad: vinylbenzene-butadiene block polymkeric substance (SBS): styrene-butadiene rubber(SBR) (SBR): resin: stablizer: warm-mixing agent=100:9:4:4:3:3.Described vinylbenzene-butadiene block polymkeric substance is star-like.Described resin is petroleum resin.Described stablizer is sulphur and TOR rubber stabilizer mixture, and ratio is: sulphur: TOR=4:1.Described warm-mixing agent is the Sasobit viscosity-depression agent.
1, pitch is put into 120 ℃ of insulations 1 hour, treated that pitch is liquid state.
2, adopt heating by electric cooker, design temperature is 175 ~ 180 ℃, the vinylbenzene that weighs up-butadiene block polymkeric substance (SBS) is added in the pitch, adopt high-speed shearing machine to carry out high speed shear, rotating speed is 1500 ~ 3000r/min, shear time is 30 ~ 45min, adds SBR again and carries out high speed shear 30 ~ 60min, adds resin and TOR rubber stabilizer and shears 20 ~ 30min.
3, warm-mixing agent is added in the said mixture, under 175 ~ 180 ℃ of conditions, stir 60min, add the sulphur stablizer, stir 60 ~ 90min, so that asphalt mixing is even.
4, under 135 ~ 150 ℃ with asphalt melting, can be directly used in construction.
According to the test specimen behind " highway engineering pitch and Asphalt Mixture Experiment rules " (JTG E20-2011) casting, it is carried out performance test under the temperature of regulation, the performance index that obtain pitch are as follows:
Penetration degree (40 ℃/0.1mm): 31;
Softening temperature (25 ℃/℃): 96.7 ℃;
Ductility (5 ℃/cm): 31.9cm;
Elastic restoration ratio (25 ℃/%): 92%;
Mass loss after RTFOT is aging: 0.46%.
The softening temperature test illustrates high-temperature stability; Ductility test explanation low temperature cracking resistance energy; Residue test explanation ageing resistance behind the RTFOT.
Embodiment 2
A kind of temperature is mixed the type high elasticity modified asphalt, comprises following composition:
70# bi tumenf orr oad: vinylbenzene-butadiene block polymkeric substance (SBS): styrene-butadiene rubber(SBR) (SBR): resin: stablizer: warm-mixing agent=100:5:4:4:3:3.Described vinylbenzene-butadiene block polymkeric substance is star-like.Described resin is petroleum resin.Described stablizer is sulphur and TOR rubber stabilizer mixture, and ratio is: sulphur: TOR=4:1.Described warm-mixing agent is the Sasobit viscosity-depression agent.
1, pitch is put into 120 ℃ of insulations 1 hour, treated that pitch is liquid state.
2, adopt heating by electric cooker, design temperature is 175 ~ 180 ℃, the vinylbenzene that weighs up-butadiene block polymkeric substance (SBS) is added in the pitch, adopt high-speed shearing machine to carry out high speed shear, rotating speed is 1500 ~ 3000r/min, shear time is 30 ~ 45min, adds SBR again and carries out high speed shear 30 ~ 60min, adds resin and TOR rubber stabilizer and shears 20 ~ 30min.
3, warm-mixing agent is added in the said mixture, under 175 ~ 180 ℃ of conditions, stir 60min, add the sulphur stablizer, stir 60 ~ 90min, so that asphalt mixing is even, cool off for subsequent use.
4, under 135 ~ 150 ℃ with asphalt melting, can be directly used in construction.
Build test specimen after the moulding according to " highway engineering pitch and Asphalt Mixture Experiment rules " (JTG E20-2011), it is carried out performance test under the temperature of regulation, the performance index that obtain pitch are as follows:
Penetration degree (40 ℃/0.1mm): 50.8;
Softening temperature (25 ℃/℃): 94.6;
Ductility (5 ℃/cm): 28.1;
Elastic restoration ratio (25 ℃/%): 90.5;
Mass loss after RTFOT is aging: 0.35%.
The softening temperature test illustrates high-temperature stability; Ductility test explanation low temperature cracking resistance energy; Residue test explanation ageing resistance behind the RTFOT.
Claims (2)
1. a temperature is mixed type high elasticity modified asphalt prescription, it is characterized in that, comprises following composition:
(1) petroleum pitch is major ingredient;
(2) vinylbenzene-butadiene block polymkeric substance (SBS) is properties-correcting agent;
(3) styrene-butadiene rubber(SBR) (SBR) is properties-correcting agent;
(4) resin is properties-correcting agent, selects petroleum resin or Gum Rosin;
(5) stablizer is sulphur and rubber stabilizer TOR mixture, wherein sulphur: TOR=4:1-2 in mass ratio;
(6) warm-mixing agent is organic viscosity-depression agent;
Above-mentioned complete petroleum pitch prescription, according to massfraction, vinylbenzene-butadiene block polymkeric substance (SBS): styrene-butadiene rubber(SBR) (SBR): resin: stablizer: the mass ratio of warm-mixing agent is: 100:3-10:1-5:0-10:2-6:1-5.
2. the preparation method that temperature is mixed the type high elasticity modified asphalt is characterized in that, step is as follows:
(1) raw material is prepared:
Proportioning according to various materials takes by weighing consumption, according to massfraction, and petroleum pitch: vinylbenzene-butadiene block polymkeric substance (SBS): styrene-butadiene rubber(SBR) (SBR): resin: stablizer: warm-mixing agent=100:3-10:1-5:0-10:2-6:1-5; Described resin is petroleum resin or Gum Rosin; Described stablizer is sulphur and rubber stabilizer TOR mixture, and ratio is: sulphur: TOR=4:1-2;
(2) pitch is put into 120 ℃ of insulations 1 hour, treated that pitch is liquid state;
(3) adopt heating by electric cooker, design temperature is 175 ~ 180 ℃, the vinylbenzene that weighs up-butadiene block polymkeric substance (SBS) is added in the pitch, adopt high-speed shearing machine to carry out high speed shear, rotating speed is 1500 ~ 3000r/min, shear time is 30 ~ 45min, adds styrene-butadiene rubber(SBR) (SBR) again and carries out high speed shear 30 ~ 60min, adds resin and rubber stabilizer TOR and shears 20 ~ 30min;
(4) warm-mixing agent is added in the said mixture, stir 60min under 175 ~ 180 ℃ of conditions, add the sulphur stablizer, stir 60 ~ 90min, so that asphalt mixing is even, bitumen construction mix temperature is 135 ~ 150 ℃.
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| CN201310209376.9A CN103305015B (en) | 2013-05-30 | 2013-05-30 | Warm mix high-elastic plasticity bridge expanssion joint seam sealer and preparation method |
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| CN201310209376.9A CN103305015B (en) | 2013-05-30 | 2013-05-30 | Warm mix high-elastic plasticity bridge expanssion joint seam sealer and preparation method |
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| CN103305015B CN103305015B (en) | 2016-04-06 |
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Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104177846A (en) * | 2014-07-31 | 2014-12-03 | 上海城建新路桥建设工程有限公司 | Grouting material, grouting method and road maintenance method |
| CN104672630A (en) * | 2013-11-26 | 2015-06-03 | 比亚迪股份有限公司 | Modified ethylene propylene rubber and preparation method thereof |
| CN105331329A (en) * | 2015-10-31 | 2016-02-17 | 菏泽海诺知识产权服务有限公司 | Pressure-sensitive pitch crack pouring sealant |
| CN105482477A (en) * | 2016-01-25 | 2016-04-13 | 西安公路研究院 | Super-adhesive composite modified emulsified asphalt and preparation method thereof |
| CN106957534A (en) * | 2017-01-18 | 2017-07-18 | 盘锦禹王防水建材集团有限公司 | A kind of low forming temperature high-polymer modified pitch glue and preparation method thereof |
| CN107022200A (en) * | 2017-05-08 | 2017-08-08 | 云南阳光道桥股份有限公司 | Modified pitch of Rut resistance and preparation method thereof under thermal extremes fully loaded transportation condition |
| CN107513278A (en) * | 2016-06-17 | 2017-12-26 | 中国石油化工股份有限公司 | Warm mix modified pitch, contain its compound and preparation method thereof |
| CN108948752A (en) * | 2017-05-17 | 2018-12-07 | 中路高科(北京)公路技术有限公司 | Porous pavement special asphalt, mixture and preparation method containing it |
| CN109735125A (en) * | 2019-01-14 | 2019-05-10 | 广西交通职业技术学院 | A kind of novel high-strength anti-rutting modified asphalt and preparation method thereof |
| CN110903664A (en) * | 2019-12-12 | 2020-03-24 | 长安大学 | Warm-mixed composite modified asphalt and preparation method thereof |
| CN111471309A (en) * | 2020-04-15 | 2020-07-31 | 中路高科(北京)公路技术有限公司 | Asphalt modifier and preparation method thereof, modified asphalt and preparation method thereof |
| CN112831189A (en) * | 2021-01-05 | 2021-05-25 | 长安大学 | Asphalt high-ductility cementing material, high-ductility material and preparation method |
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Cited By (15)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN104672630A (en) * | 2013-11-26 | 2015-06-03 | 比亚迪股份有限公司 | Modified ethylene propylene rubber and preparation method thereof |
| CN104672630B (en) * | 2013-11-26 | 2017-02-08 | 比亚迪股份有限公司 | Modified ethylene propylene rubber and preparation method thereof |
| CN104177846B (en) * | 2014-07-31 | 2016-07-06 | 上海城建新路桥建设工程有限公司 | Injecting paste material, grouting method and road maintenance method for maintaining |
| CN104177846A (en) * | 2014-07-31 | 2014-12-03 | 上海城建新路桥建设工程有限公司 | Grouting material, grouting method and road maintenance method |
| CN105331329A (en) * | 2015-10-31 | 2016-02-17 | 菏泽海诺知识产权服务有限公司 | Pressure-sensitive pitch crack pouring sealant |
| CN105482477A (en) * | 2016-01-25 | 2016-04-13 | 西安公路研究院 | Super-adhesive composite modified emulsified asphalt and preparation method thereof |
| CN107513278A (en) * | 2016-06-17 | 2017-12-26 | 中国石油化工股份有限公司 | Warm mix modified pitch, contain its compound and preparation method thereof |
| CN106957534A (en) * | 2017-01-18 | 2017-07-18 | 盘锦禹王防水建材集团有限公司 | A kind of low forming temperature high-polymer modified pitch glue and preparation method thereof |
| CN107022200A (en) * | 2017-05-08 | 2017-08-08 | 云南阳光道桥股份有限公司 | Modified pitch of Rut resistance and preparation method thereof under thermal extremes fully loaded transportation condition |
| CN108948752A (en) * | 2017-05-17 | 2018-12-07 | 中路高科(北京)公路技术有限公司 | Porous pavement special asphalt, mixture and preparation method containing it |
| CN108948752B (en) * | 2017-05-17 | 2020-12-01 | 中路交建(北京)工程材料技术有限公司 | Special asphalt for permeable pavement, mixture containing same and preparation method |
| CN109735125A (en) * | 2019-01-14 | 2019-05-10 | 广西交通职业技术学院 | A kind of novel high-strength anti-rutting modified asphalt and preparation method thereof |
| CN110903664A (en) * | 2019-12-12 | 2020-03-24 | 长安大学 | Warm-mixed composite modified asphalt and preparation method thereof |
| CN111471309A (en) * | 2020-04-15 | 2020-07-31 | 中路高科(北京)公路技术有限公司 | Asphalt modifier and preparation method thereof, modified asphalt and preparation method thereof |
| CN112831189A (en) * | 2021-01-05 | 2021-05-25 | 长安大学 | Asphalt high-ductility cementing material, high-ductility material and preparation method |
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