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双语推荐：改性沥青铺装层

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结合华北地区某大型水泥混凝土桥面沥青铺装层工程,将半结构多目标模糊优选评价理论应用到桥面铺装防水体系方案比选中。根据桥面铺装防水体系需要综合考虑的几个方面,建立综合评价指标体系,通过确定各指标对分系统相对优属度矩阵及分系统对总决策的相对优属度向量,并确定出各方案对总决策的优越度,最终比选出方案1(热SBS改性沥青与0.5%单粒径预拌碎石封层+2 cm沥青胶砂防水层+改性乳化沥青粘层)为最优方案。
Relying on bridge deck pavement for a large concrete bridge in North China,the half-structural and multi-objective fuzzy optimization theory is applied.According to considering several as-pects of waterproof system of bridge deck pavement,comprehensive evaluation index system is estab-lished.Through determining the relative subordinate degree matrix for the criteria and the relative subor-dinate degree vector of the sub-system to total decision,the preponderance of the scenarios chosen to the total decision are decided,and finally program 1 that is seal coat of heat SBS modified asphalt and 0.5%single particle size premixed gravel +waterproof layer of 2 cm asphalt sand +sticky layer of modified e-mulsified asphalt is selected as the optimal scheme.

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在我国为数众多的水泥混凝土桥梁在远未达到设计寿命时,就出现了钢筋锈蚀、混凝土松散、结构强度下降、承载能力大幅衰减等病害现象。桥面铺装防水粘结体系的性能对桥面铺装的使用品质及对水泥混凝土桥梁结构的使用寿命具有显著影响。设置长效防水粘结层是确保桥面铺装结构耐久性的重大措施之一。以湖南省娄新高速公路水泥混凝土桥桥面铺装防水粘结层设置为实际研究背景,引用国外先进的水泥混凝土桥面铺装防水粘结体系设计方法及性能评价体系,对国外应用广泛且优良的长效甲基丙烯酸甲酯MMA防水粘结体系与我国普遍采用的SBS改性沥青碎石封层、改性乳化沥青等防水粘结材料防水进行了对比试验,为深入进行湖南省娄新高速公路水泥混凝土桥面铺装防水粘结体系研究及实际工程选择应用提供理论依据。
The design life of a large number of cement concrete bridge steel corrosion loose con-crete,structural strength decreased,carrying capacity substantially attenuated disease phenomenon.The use of the performance of the bridge deck pavement quality deck pavement waterproof bonding system and has a significant impact on the service life of cement concrete bridge structure.The set of long-lasting wa-terproof adhesive layer is one of the major measures to ensure the durability of the Decks.In this paper, Hunan Province Lou new highway cement concrete bridge deck pavement waterproof adhesive layer set for the actual research background,references the advanced foreign Cement Concrete Deck Pavement water-proof adhesive system design and performance evaluation system,foreign and excellent long-term methyl methacrylate MMA waterproof bonding system widely used in China SBS modified asphalt pavement sur-face modified emulsified asphalt waterproof adhesive material waterproof comparative test dept

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南京四桥为主跨1 418m的三跨连续钢箱梁悬索桥,在国内首次采用复合浇注式沥青钢桥面铺装体系,下层为4cm厚GA-13浇注式沥青混凝土,上层为3.5cm厚AC-13高弹改性沥青混凝土,下层与桥面钢板的粘结层采用溶剂型橡胶沥青。为了解粘结层性能,进行了溶剂型橡胶沥青拉拔试验、剪切试验,结果表明溶剂型橡胶沥青防水粘结层能较好地适应常温条件下的钢桥面铺装抗剥离破坏的要求,但极端低温条件下应验算拉拔强度;粘结层满足抗剪强度要求。为指导粘结层施工,进行钢桥面表面处理工艺试验、粘结层现场施工工艺试验,根据试验成果,提出保证施工质量的针对性措施:钢桥面表面喷砂处理采用Sa3.0级;钢桥面表面处理后直接铺装防水粘结层材料,不再进行传统的表面喷锌或涂锌防护;通过试验研究和试验段施工确定合理的施工控制参数。
T he Fourth Nanjing Changjiang River Bridge is a three-span continuous steel box girder suspension bridge with a main span of 1 418 m ,to which the composite poured asphalt steel deck pavement system has been used for the first time .The lower layer of the pavement is the 4 cm thick GA-13 poured asphalt concrete w hile the upper layer is the 3 .5 cm thick AC-13 high-elastic modified asphalt concrete ,and the binding layer between the lower layer and the steel deck plate a-dopts the solvent rubber asphalt .To investigate the performance of the binding layer ,the solvent rubber asphalt was checked by the pull-out test and shear test .The results indicate that the bind-ing layer of solvent rubber asphalt can better meet the anti-debonding damage requirements of the steel bridge deck pavement under constant temperatures ,but under the extreme low temperatures , the tensile strength of the binding layer should be checked .The binding layer is proved satisfying the anti-shear requirements .T

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武汉鹦鹉洲长江大桥主桥为(200+2×850+200)m的三塔四跨地锚式悬索桥,为解决桥面铺装层易破损、脱离移位的难题,主梁采用钢-混结合梁结构,其上铺装改性沥青SMA铺装层。针对该新型结构设计,钢加劲梁各单元件均提前在专业钢结构加工厂内制造成型,并采用长线法预拼;混凝土桥面板采取工厂预制施工;边跨混凝土桥面板与钢加劲梁结合采取先节段内结合,后节段间结合的二次结合施工技术;中跨混凝土桥面板与钢加劲梁结合采取先节段桥面板临时固定,后分批浇筑湿接缝混凝土的结合施工技术。实践证明,该桥采用的钢-混结合梁施工技术实际应用效果良好。
The main bridge of Yingwuzhou Changjiang River Bridge in Wuhan is a three-tower four-span earth-anchored suspension bridge with span arrangement of (200+2 × 850+200) m .To counteract the bridge deck pavement damage ,detaching and displacement ,the main girder is de-signed as the steel-concrete composite girder structure covered with modified asphalt SMA pave-ment .To suit the new structural design ,all the elements of the steel stiffening girder were prefab-ricated and assembled by long line method in the specialist steel structure workshop .The concrete deck slabs were also factory-made .The concrete deck slabs and the steel stiffening girder in the side spans were combined by using the two-phased combining construction technique ,by which the elements in each section were combined first and then ,the overall sections were combined .But for the concrete deck slabs and the steel stiffening girder in the intermediate spans ,the concrete deck slabs in each section were temporarily fixed

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针对包括内蒙古在内的西部地区常用的3种聚合物改性沥青（胶粉改性沥青、SBS改性沥青及复合胶粉改性沥青）,利用扫描电镜（SEM）对比观察了废胶粉和SBS改性剂、普通沥青及3种改性沥青的微观结构形貌,发现两种改性剂均具有网状结构,3种改性沥青中橡胶粉及SBS改性剂都与沥青融合性良好;利用针入度粘度指数PVN和粘温指数VTS对3种改性沥青的感温性进行了评价,发现胶粉改性沥青具有最小的温度敏感性;利用动态剪切流变试验,通过研究复数剪切模量G^＊及相位角δ随温度及频率变化的规律并利用改进的车辙因子对3种改性沥青的高温性能进行评价,得出胶粉改性沥青具有最好的高温稳定性,其次为复合胶粉改性沥青,并且从改性沥青微观结构的角度出发解释了3种改性沥青温度敏感性与高温变形性能存在此种规律的原因。
Three polymer modified asphalts(crumb rubber modified asphalt、SBS modified asphalt and compound crumb rubber modified asphalt)widely used in Inner Mongolia and western china are studied.Scanning Electron Microscope(SEM)is used to observe crumb rubber and SBS modifier、ordina-ry asphalt and three modified asphalts microstructure.We can see,two modifiers have net structure and they mix together with asphalt well.Penetration viscosity index (PVN)and viscidity temperature index (VTS)are used to evaluate the temperature sensitivity of three modified asphalts.The results indicate that crumb rubber modified asphalt has lowest temperature sensitivity.Using the dynamic shear rheological tests,by studying the plural shear modulus G* and phase Angle of the delta change with temperature and frequency and improved rutting factor was used to evaluate the high temperature performance of three kinds of modified asphalt,experimental results show,crumb rubber modified asphalt has the best tem

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介绍了目前国内在制备改性沥青方面的三种常用方法：废橡胶粉WRP改性沥青、SBR改性沥青、SBS改性沥青，并对这三种方法的改性机理作了简要叙述，对由这三种方法制备的改性沥青的性能做了对比。因此可根据实际情况选择不同的改性方法。
Three kinds of common preparation methods of modified asphalt in China were introduced: modified asphalt with waste rubber powder WRP, SBR modified asphalt and SBS modified asphalt. Mechanisms of these modification methods were discussed. Properties of modified asphalt prepared by these methods were compared. At last, it’s pointed out that suitable modification method should be selected based on actual conditions.

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从制备SBS改性沥青原材料的角度出发，使用五种基质沥青、五种改性剂和五个不同的改性剂掺量，利用动态剪切流变仪各原材料对改性沥青高、低温性能的影响。研究结果表明：改性剂掺量是影响沥青车辙因子最重要的因素，基质沥青次之，改性剂类型对改性沥青车辙因子影响很小。
Based on the material of preparing SBS modified asphalt,this research studied on five kind of base asphalt,five SBS modifier and five different modifier dosage.Applied the dynamic shear rheometer to analyze the influence of material on the high and low temperature performance of SBS modified asphalt.The result show: modifier dosage is the most important fact of rutting factor, followed by the type of asphalt,modifier has little effect on modified bitumen rutting factor.

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采用废旧胶粉和抗车辙剂对90号A级道路石油沥青进行双重改性,对比双重改性沥青混合料与SBS改性沥青混合料的高温性能、低温性能、水稳定性能,结果表明双重改性沥青混合料的高温性能优于SBS改性沥青混合料,低温性能略低于SBS改性沥青混合料、水稳定性能略高于SBS改性沥青混合料。总体而言,双重改性沥青混合料的路用性能可满足规范的最高要求,且其高温抗车辙性能显著。
Asphalt mixture was double modified by waste robber powder and anti-rutting agent. High and low temperature performance, water stability performance between SBS modified asphalt mixture and dou-ble modified asphalt mixture were contrasted. The results show that the high temperature performance of double modified asphalt mixture is better than that of the SBS modified asphalt mixture,the low tempera-ture performance of double modified asphalt mixture is a little less than that of the SBS modified asphalt mixture, the water stability performance of double modified asphalt mixture is a little better than that of the SBS modified asphalt mixture. Overall, double modified asphalt mixture can meet the highest require-ments of the specification, and high temperature anti-rutting performance is significantly.

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以沥青的高温和低温性能为评价对象，针对相同标号不同油源基质沥青和不同掺量改性剂，分析了改性剂对不同油源基质沥青性能的影响和改性剂掺量对改性沥青性能的影响，结果表明，同一种改性剂对不同油源基质沥青的改性效果不同；改性剂掺量对改性沥青的性能有重要影响，而且掺量越大，影响越显著。
Taking asphalt performance at high and low temperature as the assessing targets,in light of different oil source matrix asphalt and dif-ferent mixing agent with same standard,the paper analyzes the impact of modifier upon different oil source matrix asphalt and the impact of modi-fied mixing amount upon modified asphalt. Results show that:the modified effect of the same modified agent upon different oil source matrix as-phalt is not obvious,modified amount has important impact upon modified asphalt performance,with the increasing of mixing amount,the impact effect is more obvious.

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为了研究基质沥青、SBR改性剂、乳化剂等原材料对SBR改性乳化沥青性能的影响,对不同基质沥青及不同SBR改性剂和乳化剂掺量下的SBR改性乳化沥青路用性能进行分析。结果表明:SBR胶乳掺量的增加使改性乳化沥青蒸发残留物低温性能和高温性能增强;乳化剂对改性乳化沥青储存稳定性有显著影响。
In order to study the impact of matrix asphalt , SBR latex , emulsifiers and other raw materials on the performance of modified e-mulsified asphalt , the emulsified asphalt performance of different matrix asphalt , latex and emulsifier dosages was analyzed .The results show that the increasing of dosage of SBR latex increased the cryogenic property and elevated temperature property of evaporated modified e -mulsified asphalt residue;and emulsifier has a significant effect on the storage stability of modified emulsified asphalt .

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